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Sample records for endangered fish zoogoneticus

  1. Evolutionary history of the endangered fish Zoogoneticus quitzeoensis (Bean, 1898) (Cyprinodontiformes: Goodeidae) using a sequential approach to phylogeography based on mitochondrial and nuclear DNA data

    Science.gov (United States)

    2008-01-01

    Background Tectonic, volcanic and climatic events that produce changes in hydrographic systems are the main causes of diversification and speciation of freshwater fishes. Elucidate the evolutionary history of freshwater fishes permits to infer theories on the biotic and geological evolution of a region, which can further be applied to understand processes of population divergence, speciation and for conservation purposes. The freshwater ecosystems in Central Mexico are characterized by their genesis dynamism, destruction, and compartmentalization induced by intense geologic activity and climatic changes since the early Miocene. The endangered goodeid Zoogoneticus quitzeoensis is widely distributed across Central México, thus making it a good model for phylogeographic analyses in this area. Results We addressed the phylogeography, evolutionary history and genetic structure of populations of Z. quitzeoensis through a sequential approach, based on both microsatellite and mitochondrial cytochrome b sequences. Most haplotypes were private to particular locations. All the populations analysed showed a remarkable number of haplotypes. The level of gene diversity within populations was H¯d = 0.987 (0.714 – 1.00). However, in general the nucleotide diversity was low, π = 0.0173 (0.0015 – 0.0049). Significant genetic structure was found among populations at the mitochondrial and nuclear level (ΦST = 0.836 and FST = 0.262, respectively). We distinguished two well-defined mitochondrial lineages that were separated ca. 3.3 million years ago (Mya). The time since expansion was ca. 1.5 × 106 years ago for Lineage I and ca. 860,000 years ago for Lineage II. Also, genetic patterns of differentiation, between and within lineages, are described at different historical timescales. Conclusion Our mtDNA data indicates that the evolution of the different genetic groups is more related to ancient geological and climatic events (Middle Pliocene, ca. 3.3 Mya) than to the current

  2. Evolutionary history of the endangered fish Zoogoneticus quitzeoensis (Bean, 1898 (Cyprinodontiformes: Goodeidae using a sequential approach to phylogeography based on mitochondrial and nuclear DNA data

    Directory of Open Access Journals (Sweden)

    García-Garitagoitia José

    2008-05-01

    Full Text Available Abstract Background Tectonic, volcanic and climatic events that produce changes in hydrographic systems are the main causes of diversification and speciation of freshwater fishes. Elucidate the evolutionary history of freshwater fishes permits to infer theories on the biotic and geological evolution of a region, which can further be applied to understand processes of population divergence, speciation and for conservation purposes. The freshwater ecosystems in Central Mexico are characterized by their genesis dynamism, destruction, and compartmentalization induced by intense geologic activity and climatic changes since the early Miocene. The endangered goodeid Zoogoneticus quitzeoensis is widely distributed across Central México, thus making it a good model for phylogeographic analyses in this area. Results We addressed the phylogeography, evolutionary history and genetic structure of populations of Z. quitzeoensis through a sequential approach, based on both microsatellite and mitochondrial cytochrome b sequences. Most haplotypes were private to particular locations. All the populations analysed showed a remarkable number of haplotypes. The level of gene diversity within populations was H¯ MathType@MTEF@5@5@+=feaafiart1ev1aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGaciGaaiaabeqaaeqabiWaaaGcbaGafmisaGKbaebaaaa@2D06@d = 0.987 (0.714 – 1.00. However, in general the nucleotide diversity was low, π = 0.0173 (0.0015 – 0.0049. Significant genetic structure was found among populations at the mitochondrial and nuclear level (ΦST = 0.836 and FST = 0.262, respectively. We distinguished two well-defined mitochondrial lineages that were separated ca. 3.3 million years ago (Mya. The time since expansion was ca. 1.5 × 106 years ago for Lineage I and ca. 860,000 years ago for Lineage II. Also, genetic patterns of

  3. Endohelminth parasites of the freshwater fish Zoogoneticus purhepechus (Cyprinodontiformes: Goodeidae from two springs in the Lower Lerma River, Mexico Endohelmintos parásitos del pez dulceacuícola Zoogoneticus purhepechus (Cyprinodontiformes: Goodeidae en dos manantiales de la cuenca del río Lerma bajo, México

    Directory of Open Access Journals (Sweden)

    Andrés Martínez-Aquino

    2011-12-01

    Full Text Available In order to establish the helminthological record of the viviparous fish species Zoogoneticus purhepechus, 72 individuals were collected from 2 localities, La Luz spring (n= 45 and Los Negritos spring (n= 27, both in the lower Lerma River, in Michoacán state, Mexico. Twelve helminth taxa were recovered, 5 adults (the digeneans Margotrema bravoae and Phyllodistomum sp., the cestode Bothriocephalus acheilognathi, the nematode Rhabdochona lichtenfelsi and the acanthocephalan Pomphorhynchus cf. bulbocolli, and 7 larvae (the metacercariae of Clinostomum complanatum, the cysticercoid of Cyclophyllidea, the nematodes Rhabdochona sp., Eustrongylides sp., Contracaecum sp. and Spiroxys sp., and the cysthacanth of Polymorphus brevis. Of these, R. lichtenfelsi was the most prevalent and abundant species at La Luz spring with 15.6% and 0.33 individuals per analyzed host. The remaining species were relatively more rare and infrequent. The helminth parasite community of Z. purhepechus at Los Negritos spring was remarkably poor and abundance was very low. The omnivorous feeding habits, the position of the host species in the food web, and the environmental characteristics of each locality are suggested as the main factors determining the helminth parasite communities in this freshwater fish.Se examinaron 72 individuos del pez vivíparo Zoogoneticus purhepechus para establecer el registro helmintológico de la especie. Los huéspedes se recolectaron de los manantiales La Luz (n= 45 y Los Negritos (n= 27, ubicados en la porción baja del río Lerma, en el estado de Michoacán, México. El registro helmintológico consta de 12 especies, incluyendo como adultos los digéneos Margotrema bravoae y Phyllodistomum sp., el céstodo Bothriocephalus acheilognathi, el nemátodo Rhabdochona lichtenfelsi, y el acantocéfalo Pomphorhynchus cf. bulbocolli. Además, como estadios larvarios, se encontraron las metacercarias de Clinostomum complanatum, el cisticercoide de

  4. Recovery of a US endangered fish.

    Directory of Open Access Journals (Sweden)

    Mark B Bain

    Full Text Available BACKGROUND: More fish have been afforded US Endangered Species Act protection than any other vertebrate taxonomic group, and none has been designated as recovered. Shortnose sturgeon (Acipenser brevirostrum occupy large rivers and estuaries along the Atlantic coast of North America, and the species has been protected by the US Endangered Species Act since its enactment. METHODOLOGY/PRINCIPAL FINDINGS: Data on the shortnose sturgeon in the Hudson River (New York to Albany, NY, USA were obtained from a 1970s population study, a population and fish distribution study we conducted in the late 1990s, and a fish monitoring program during the 1980s and 1990s. Population estimates indicate a late 1990s abundance of about 60,000 fish, dominated by adults. The Hudson River population has increased by more than 400% since the 1970s, appears healthy, and has attributes typical for a long-lived species. Our population estimates exceed the government and scientific population recovery criteria by more than 500%, we found a positive trend in population abundance, and key habitats have remained intact despite heavy human river use. CONCLUSIONS/SIGNIFICANCE: Scientists and legislators have called for changes in the US Endangered Species Act, the Act is being debated in the US Congress, and the Act has been characterized as failing to recover species. Recovery of the Hudson River population of shortnose sturgeon suggests the combination of species and habitat protection with patience can yield successful species recovery, even near one of the world's largest human population centers.

  5. Morphological and genetic comparative analyses of populations of Zoogoneticus quitzeoensis (Cyprinodontiformes: Goodeidae from Central Mexico, with description of a new species Análisis comparativo morfológico y genético de diferentes poblaciones de Zoogoneticus quitzeoensis (Cyprinodontiformes:Goodeidae del Centro de México, con la descripción de una especie nueva

    Directory of Open Access Journals (Sweden)

    Omar Domínguez-Domínguez

    2008-12-01

    Full Text Available A genetic and morphometric study of populations of Zoogoneticus quitzeoensis (Bean, 1898 from the Lerma and Ameca basins and Cuitzeo, Zacapu and Chapala Lakes in Central Mexico was conducted. For the genetic analysis, 7 populations were sampled and 2 monophyletic groups were identified with a genetic difference of D HKY= 3.4% (3-3.8%, one being the populations from the lower Lerma basin, Ameca and Chapala Lake, and the other populations from Zacapu and Cuitzeo Lakes. For the morphometric analysis, 4 populations were sampled and 2 morphotypes identified, 1 from La Luz Spring in the lower Lerma basin and the other from Zacapu and Cuitzeo Lakes drainages. Using these 2 sources of evidence, the population from La Luz is regarded as a new species Zoogoneticus purhepechus sp. nov. The new species differs from its sister species Zoogoneticus quitzeoensis in having a shorter preorbital distance (Prol/SL or = 0.056, SD = 0.01, longer dorsal fin base length (DFL/SL or = 0.18, SD = 0.03 and 13-14 rays in the dorsal fin. The new species differs from both members of its sister taxon (Zoogoneticus tequila and Z. quitzeoensis at 10 fixed nucleotide positions in the cytochrome b gene. We have determined that Zoogoneticus purhepechus is distributed in the lower Lerma, upper Ameca, Armeria and Santiago river basins, and Chapala Lake. This new species should be considered endangered of extinction according to the criteria of the MER (Aii,Bi,Ci,Di and for the IUCN (A-1,b,c,e.Se realizó un estudio genético y morfométrico en poblaciones de Zoogoneticus quitzeoensis (Bean, 1898 pertenecientes a las cuencas de los ríos Lerma y Ameca y los lagos de Cuitzeo, Zacapu y Chapala en el centro de México. Para el análisis genético se analizaron 7 poblaciones, identificándose 2 grupos monofiléticos bien diferenciados, con distancias genéticas entre ellos de D HKY = 3.4% (3-3.8%, uno de los grupos se distribuye por las cuencas de los ríos Ameca y bajo Lerma y en el

  6. Threatened and Endangered Freshwater Fish and Mussel Species Richness

    Data.gov (United States)

    U.S. Environmental Protection Agency — These data represent predicted current distributions of all US listed Threatened and Endangered freshwater fish and freshwater mussels in the Middle-Atlantic region....

  7. SURROGATE SPECIES IN ASSESSING CONTAMINANT RISK FOR ENDANGERED FISHES

    Science.gov (United States)

    Rainbow trout, fathead minnows, and sheepshead minnows were tested as surrogate species to assess contaminant risk for 17 endangered fishes and one toad species. Acute toxicity tests were conducted with carbaryl, copper, 4-nonylphenol, pentachlorophenol, and permethrin in accord...

  8. Endangered Fish Species in Kansas: Historic vs Contemporary Distribution

    Science.gov (United States)

    Background/Question/Methods Kansas state has more freshwater fish species than other states in the west and northern US. Based on recent count, more than 140 fishes have been documented in Kansas rivers. And at least five are categorized as endangered species in Kansas (and thre...

  9. Endangered fish species of the world - a review

    OpenAIRE

    Radu Hărşan; I. Valentin Petrescu-Mag

    2008-01-01

    The present paper summarizes a large part of the endangered and critically endangered fish species of the world. The list was constructed using the comprehensive IUCN Red List of Threatened Species (available in December 2008) and the well elaborated FISHBASE (available on the official website, in 2008) for taxonomy and accepted scientific names of the species. To these two important sources, many scientific papers and communications were added when recent and useful reports were found. Howev...

  10. Endangered river fish: factors hindering conservation and restoration

    Science.gov (United States)

    Cooke, Steven J.; Paukert, Craig P.; Hogan, Zeb

    2012-01-01

    Globally, riverine fish face many anthropogenic threats including riparian and flood plain habitat degradation, altered hydrology, migration barriers, fisheries exploitation, environmental (climate) change, and introduction of invasive species. Collectively, these threats have made riverine fishes some of the most threatened taxa on the planet. Although much effort has been devoted to identifying the threats faced by river fish, there has been less effort devoted to identifying the factors that may hinder our ability to conserve and restore river fish populations and their watersheds. Therefore, we focus our efforts on identifying and discussing 10 general factors (can also be viewed as research and implementation needs) that constrain or hinder effective conservation action for endangered river fish: (1) limited basic natural history information; (2) limited appreciation for the scale/extent of migrations and the level of connectivity needed to sustain populations; (3) limited understanding of fish/river-flow relationships; (4) limited understanding of the seasonal aspects of river fish biology, particularly during winter and/or wet seasons; (5) challenges in predicting the response of river fish and river ecosystems to both environmental change and various restoration or management actions; (6) limited understanding of the ecosystem services provided by river fish; (7) the inherent difficulty in studying river fish; (8) limited understanding of the human dimension of river fish conservation and management; (9) limitations of single species approaches that often fail to address the broader-scale problems; and (10) limited effectiveness of governance structures that address endangered river fish populations and rivers that cross multiple jurisdictions. We suggest that these issues may need to be addressed to help protect, restore, or conserve river fish globally, particularly those that are endangered.

  11. Threatened and endangered fish and wildlife of the midwest

    Energy Technology Data Exchange (ETDEWEB)

    Schafer, D.W.; Robeck, K.E.

    1980-06-01

    This report contains information of federally-listed endangered and/or threatened fish and wildlife occurring in the midwestern states of Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, Ohio, and Wisconsin. The information was compiled as a support document for the Regional Issue Identification and Assessment (RIIA) project sponsored by the Regional Assessments Division of the Office of Technology Impacts within the Department of Energy. The information on midwestern endangered species distribution, habitats, and reasons for population decline included in this document are designed to help assess the potential for adverse impacts if energy activities are sited within the general range of an endangered species. It is hoped that this document will thereby enhance the reliability of one portion of energy-related assessments performed in the Midwest. This report considers only those species listed prior to October 1979 as endangered and/or threatened in the federal endangered species list published in the Federal Register and that have been known to occur in the region in the last 20 years.

  12. 78 FR 4836 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-01-23

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... steelhead promulgated under the Endangered Species Act (ESA). The plan specifies fishery management...: January 17, 2013. Angela Somma, Chief, Endangered Species Division, Office of Protected Resources...

  13. 77 FR 31835 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-05-30

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC049 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS..., 2012. Angela Somma, Chief, Endangered Species Division, Office of Protected Resources, National Marine...

  14. 76 FR 49735 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-08-11

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA631 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS.... Therese Conant, Acting Chief, Endangered Species Division, Office of Protected Resources, National Marine...

  15. 78 FR 4834 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-01-23

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC444 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... species. Dated: January 16, 2013. Angela Somma, Chief, Endangered Species Division, Office of Protected...

  16. 77 FR 34349 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-06-11

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... and steelhead under the Endangered Species Act (ESA). The HGMPs specify the operations of four... Somma, Chief, Endangered Species Division, Office of Protected Resources, National Marine Fisheries...

  17. 76 FR 51352 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-08-18

    ... Department of Fish and Wildlife (WDFW), for a direct take permit pursuant to the Endangered Species Act of... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Section 9 of the ESA and Federal regulations prohibit the ``taking'' of a species listed as endangered or...

  18. Invasive lionfish preying on critically endangered reef fish

    Science.gov (United States)

    Rocha, Luiz A.; Rocha, Claudia R.; Baldwin, Carole C.; Weigt, Lee A.; McField, Melanie

    2015-09-01

    Caribbean coral reef ecosystems are at the forefront of a global decline and are now facing a new threat: elimination of vulnerable species by the invasive lionfish ( Pterois spp.). In addition to being threatened by habitat destruction and pollution, the critically endangered social wrasse ( Halichoeres socialis), endemic to Belize's inner barrier reef, has a combination of biological traits (small size, schooling, and hovering behavior) that makes it a target for the invasive lionfish. Based on stomach content analyses, this small fish comprises almost half of the lionfish diet at the inner barrier reef in Belize. The combination of lionfish predation, limited range, and ongoing habitat destruction makes the social wrasse the most threatened coral reef fish in the world. Other species with small range and similar traits occur elsewhere in the Caribbean and face similar risks.

  19. 78 FR 31518 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-05-24

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC690 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Department of Fish and Wildlife (ODFW), Washington Department of Fish and Wildlife (WDFW), and U.S. Bureau of...

  20. 77 FR 75611 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-12-21

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... promulgated under the Endangered Species Act (ESA). The plans specify the propagation of five species of... 10, 2000). Dated: December 17, 2012. Angela Somma, Chief, Endangered Species Division, Office of...

  1. 76 FR 43986 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-07-22

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS..., in the form of Hatchery and Genetic Management Plans (HGMPs) pursuant to the Endangered Species Act... the ``taking'' of a species listed as endangered or threatened. The term ``take'' is defined under the...

  2. 77 FR 41168 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-07-12

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... available for review pursuant to section 10(c) of the Endangered Species Act (ESA). DATES: Comments and... the ESA. NMFS regulations governing permits for threatened and endangered species are promulgated at...

  3. 75 FR 14133 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-03-24

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS..., in the form of Hatchery and Genetic Management Plans (HGMPs) pursuant to the Endangered Species Act... the ``taking'' of a species listed as endangered or threatened. The term ``take'' is defined under the...

  4. 76 FR 78242 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-12-16

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA866 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Endangered Species Act (ESA) and to help guide management and conservation efforts. The application may be...

  5. 77 FR 21084 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-04-09

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... under the Endangered Species Act (ESA). The proposed research program is intended to increase knowledge.... Lisa Manning, Acting Chief, Endangered Species Division, Office of Protected Resources, National Marine...

  6. 75 FR 82212 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-12-29

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Chinook salmon under Limit 6 of the Endangered Species Act (ESA) 4(d) Rule for salmon and steelhead, a.... Dated: December 22, 2010. Susan Pultz, Acting Chief, Endangered Species Division, Office of Protected...

  7. 76 FR 61344 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-10-04

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... modifications, as required by the Endangered Species Act of 1973 (16 U.S.C. 1531-1543) (ESA), is based on a.... Species Covered in This Notice This notice is relevant to federally endangered Central California Coast...

  8. 75 FR 50746 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-08-17

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... is intended to increase knowledge of species listed under the Endangered Species Act (ESA) and to..., Chief, Endangered Species Division, Office of Protected Resources, National Marine Fisheries Service...

  9. 75 FR 14132 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-03-24

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Endangered Species Act of 1973, as amended (ESA). The proposed modification is to extend the existing permit... regulations prohibit the ``taking'' of a species listed as endangered or threatened. The term ``take'' is...

  10. 76 FR 39856 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-07-07

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... permits and permit modifications, as required by the Endangered Species Act of 1973 (16 U.S.C. 1531-1543... and wildlife permits. Species Covered in This Notice This notice is relevant to federally endangered...

  11. 77 FR 27188 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-05-09

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... regulations promulgated for Pacific salmon and steelhead under the Endangered Species Act (ESA). The HGMPs...). Dated: May 3, 2012. Angela Somma, Chief, Endangered Species Division, Office of Protected Resources...

  12. 78 FR 6298 - Endangered and Threatened Species; Take of Anadromous Fish; Correction

    Science.gov (United States)

    2013-01-30

    ... and Threatened Species; Take of Anadromous Fish; Correction AGENCY: National Marine Fisheries Service... listed species under the Endangered Species Act of 1973. NMFS also announced the availability for public... provided above in the addresses section. Dated: January 24, 2013. Angela Somma, Chief, Endangered Species...

  13. 76 FR 20956 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-04-14

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... regulations promulgated for salmon and steelhead listed under the Endangered Species Act (ESA). The FMEP... July 10, 2000, Endangered Species Act (ESA) 4(d) rule for salmon and steelhead (65 FR 42422) and...

  14. 75 FR 25205 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-05-07

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XW33 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: NOAA's National Marine Fisheries Service (NMFS... permit. Dated: May 4, 2010. Therese Conant, Acting Chief, Endangered Species Division, Office of...

  15. 78 FR 43145 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-07-19

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC767 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration, Commerce. ACTION: Notice of availability. SUMMARY: This...

  16. 78 FR 34653 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-06-10

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC717 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration, Commerce. ACTION: Notice of decision and availability of...

  17. A survey of ichthyofauna of Lake Kanyaboli and other small waterbodies in Kenya: alternative refugia for endangered fish species

    OpenAIRE

    Maithya, J.

    1998-01-01

    In 1988, the World Conservation Union (WCU) Red Book of Endangered Species listed hundreds of endemic fishes of Lake Victoria under a single heading - "ENDANGERED". Most of the endemic native food fishes are either endangered or extinct. However, a survey of the fauna of Lake Kanyaboli, revealed that a few remaining samples of these native fishes are actually thriving. These include several unidentified Haplochromis spp., Oreochromis esculentus and Oreochromis variabilis. As a resul...

  18. 76 FR 5338 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-01-31

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA183 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... regulations (50 CFR parts 222-226) governing listed fish and wildlife permits. [[Page 5339

  19. 78 FR 77659 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-12-24

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XD040 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... NMFS regulations (50 CFR parts 222-226) governing listed fish and wildlife permits. [[Page 77660...

  20. 76 FR 5339 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-01-31

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA182 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... are issued in accordance with and are subject to the ESA and NMFS regulations governing listed fish...

  1. 77 FR 2037 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-01-13

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA928 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... advises the public that a direct take permit has been issued to the Washington Department of Fish and...

  2. 76 FR 6401 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-02-04

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA110 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... and the Washington Department of Fish and Wildlife submitted to NMFS, pursuant to the protective...

  3. 75 FR 16738 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-04-02

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... River fall Chinook salmon under the Endangered Species Act (ESA). The FMEP specifies the future... fish, sturgeon, carp, and other species.'' The FMEP describes the management of recreational fisheries...

  4. 75 FR 14134 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-03-24

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... modifications, as required by the Endangered Species Act of 1973 (16 U.S.C. 1531 1543) (ESA), is based on a... trap and beach seine, anesthesize and sample fish for species identification, tags, marks and fin clips...

  5. 77 FR 27186 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-05-09

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Endangered Species Act (ESA) and to help guide management and conservation efforts. The applications may be... salmon, and LCR steelhead. The purpose of this research is to determine fish species presence and...

  6. 76 FR 27016 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-05-10

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... increase knowledge of species listed under the Endangered Species Act (ESA) and help guide management and... during the species' upstream migration. Captured fish would be transported in a tanker truck and released...

  7. 76 FR 57717 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-09-16

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS..., importing, and exporting of endangered and threatened species (50 CFR parts 222-226). Permits Permit 15926... will be captured by fyke net, identified to species, enumerated and measured. Dead or moribund fish...

  8. 75 FR 78226 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-12-15

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... permits and permit modifications, as required by the Endangered Species Act of 1973 (16 U.S.C. 1531-1543... electrofisher and dipnet; sample fish for species identification, tags, marks and finclips, lengths and weights...

  9. Analysis of endangered Kansas fish species distribution during historical and contemporary periods (pre- and post-1969)

    Science.gov (United States)

    Background/Question/Methods Kansas has more freshwater fish species than other states in the west and northern US. More than 140 fishes have recently been documented in Kansas rivers; of these, at least five are categorized as endangered species in Kansas (and threatened species ...

  10. 77 FR 51763 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-08-27

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... INFORMATION: Authority The issuance of permits and permit modifications, as required by the Endangered Species... (50 CFR parts 222-226) governing listed fish and wildlife permits. Species Covered in This Notice This...

  11. 76 FR 14923 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-03-18

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... knowledge of species listed under the Endangered Species Act (ESA) and help guide management and... harvested groundfish species. The survey would collect data on 90+ fish species in the ocean to fulfill the...

  12. 75 FR 33243 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-06-11

    ... and Threatened Species; Take of Anadromous Fish AGENCY: NOAA's National Marine Fisheries Service (NMFS... Endangered Species Act of 1973 (16 U.S.C. 1531-1543) (ESA), is based on a finding that such permits... NMFS regulations (50 CFR parts 222-226) governing listed fish and wildlife permits. Species Covered in...

  13. 75 FR 23671 - Endangered and Threatened Species; Take of Anadromous Fish; Research Permit Applications

    Science.gov (United States)

    2010-05-04

    ... and Threatened Species; Take of Anadromous Fish; Research Permit Applications AGENCY: National Marine... listed under the Endangered Species Act (ESA) and to help guide management and conservation efforts. The... capture, handle, and release juvenile fish from all the species covered by this notice. They would also...

  14. 76 FR 15946 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-03-22

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... research permit application request relating to salmonids listed under the Endangered Species Act (ESA... research activities. The purpose of the research program is to collect warmwater fish species to analyze...

  15. 77 FR 67796 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-11-14

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC342 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... NMFS regulations governing listed fish and wildlife permits (50 CFR parts 222-226). Those individuals...

  16. 78 FR 23222 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-04-18

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC630 Endangered and Threatened Species; Take of Anadromous Fish AGENCY: NOAA's National Marine Fisheries Service (NMFS... CFR parts 222-226) governing listed fish and wildlife permits. Species Covered in This Notice This...

  17. TOXICITY OF PENTACHLOROPHENOL TO ENDANGERED AND SURROGATE FISH SPECIES

    Science.gov (United States)

    Water quality criteria (WQC) generally are based on the responses of easily cultured and tested surrogate species. Little is known about the relative sensitivity of surrogate and endangered species. The objective of this study was to compare acute and chronic (early life-stage) ...

  18. A Mixed-Method Approach for Quantifying Illegal Fishing and Its Impact on an Endangered Fish Species.

    Science.gov (United States)

    Free, Christopher M; Jensen, Olaf P; Mendsaikhan, Bud

    2015-01-01

    Illegal harvest is recognized as a widespread problem in natural resource management. The use of multiple methods for quantifying illegal harvest has been widely recommended yet infrequently applied. We used a mixed-method approach to evaluate the extent, character, and motivations of illegal gillnet fishing in Lake Hovsgol National Park, Mongolia and its impact on the lake's fish populations, especially that of the endangered endemic Hovsgol grayling (Thymallus nigrescens). Surveys for derelict fishing gear indicate that gillnet fishing is widespread and increasing and that fishers generally use 3-4 cm mesh gillnet. Interviews with resident herders and park rangers suggest that many residents fish for subsistence during the spring grayling spawning migration and that some residents fish commercially year-round. Interviewed herders and rangers generally agree that fish population sizes are decreasing but are divided on the causes and solutions. Biological monitoring indicates that the gillnet mesh sizes used by fishers efficiently target Hovsgol grayling. Of the five species sampled in the monitoring program, only burbot (Lota lota) showed a significant decrease in population abundance from 2009-2013. However, grayling, burbot, and roach (Rutilus rutilus) all showed significant declines in average body size, suggesting a negative fishing impact. Data-poor stock assessment methods suggest that the fishing effort equivalent to each resident family fishing 50-m of gillnet 11-15 nights per year would be sufficient to overexploit the grayling population. Results from the derelict fishing gear survey and interviews suggest that this level of effort is not implausible. Overall, we demonstrate the ability for a mixed-method approach to effectively describe an illegal fishery and suggest that these methods be used to assess illegal fishing and its impacts in other protected areas.

  19. Photoactivated toxicity of PAH to endangered fishes and standard laboratory test species

    International Nuclear Information System (INIS)

    Buckler, D.R.; Mount, D.R.; Tillitt, D.E.

    1994-01-01

    Polynuclear aromatic hydrocarbons (PAH) have been detected in water and sediment from the San Juan River Basin, located in the Four Corners area of the southwestern US. In addition to possessing extensive oil and gas deposits, the San Juan contains several threatened or endangered fish species such as Colorado squawfish and razorback suckers. Proposed expansion of oil and gas development in the basin has sparked concerns that potential increases in PAH loading may jeopardize these and other native fishes. In response, the authors conducted laboratory exposures of threatened and endangered species to various PAH both with and without accompanying exposure to UV light. As predicted from the literature, exposure to UV light caused a marked photo-activated toxicity response in all species; however, the sensitivity to PAH both with and without UV exposure varied among species and lifestages. Supplemental studies were conducted to evaluate the physiological mechanisms for variation in sensitivity between species and lifestage

  20. Critically endangered fish species of Turkish Seas (Mediterranean and Aegean): Longfin gurnard, Chelidonichthys obscurus (Walbaum, 1792)

    OpenAIRE

    Cemal Turan; Deniz Ergüden; Mevlüt Gürlek

    2016-01-01

    Longfin gurnard Chelidonichthys obscurus (Walbaum, 1792) is reported several times from various researchers in the checklist of Turkish marine fishes. However, last three decades, the species is not occurred in the distributional range, comprising the northeastern Mediterranean Sea and Aegean Sea coast of Turkey. It is possibly critically endangered or absent in the Turkish Seas. Moreover, there has no any biological study been carried out on C. obscurus in Turkey. C. obscurus is considered t...

  1. A trait-based approach reveals the feeding selectivity of a small endangered Mediterranean fish

    OpenAIRE

    Rodriguez-Lozano, Pablo; Verkaik, Iraima; Maceda Veiga, Alberto; Monroy, Mario; de Sostoa, Adolf; Rieradevall, Maria; Prat, Narcis

    2016-01-01

    Abstract Functional traits are growing in popularity in modern ecology, but feeding studies remain primarily rooted in a taxonomic?based perspective. However, consumers do not have any reason to select their prey using a taxonomic criterion, and prey assemblages are variable in space and time, which makes taxon?based studies assemblage?specific. To illustrate the benefits of the trait?based approach to assessing food choice, we studied the feeding ecology of the endangered freshwater fish Bar...

  2. Spatial heterogeneity in fishing creates de facto refugia for endangered Celtic Sea elasmobranchs.

    Directory of Open Access Journals (Sweden)

    Samuel Shephard

    Full Text Available The life history characteristics of some elasmobranchs make them particularly vulnerable to fishing mortality; about a third of all species are listed by the IUCN as Threatened or Near Threatened. Marine Protected Areas (MPAs have been suggested as a tool for conservation of elasmobranchs, but they are likely to be effective only if such populations respond to fishing impacts at spatial-scales corresponding to MPA size. Using the example of the Celtic Sea, we modelled elasmobranch biomass (kg h(-1 in fisheries-independent survey hauls as a function of environmental variables and 'local' (within 20 km radius fishing effort (h y(-1 recorded from Vessel Monitoring Systems data. Model selection using AIC suggested strongest support for linear mixed effects models in which the variables (i fishing effort, (ii geographic location and (iii demersal fish assemblage had approximately equal importance in explaining elasmobranch biomass. In the eastern Celtic Sea, sampling sites that occurred in the lowest 10% of the observed fishing effort range recorded 10 species of elasmobranch including the critically endangered Dipturus spp. The most intensely fished 10% of sites had only three elasmobranch species, with two IUCN listed as Least Concern. Our results suggest that stable spatial heterogeneity in fishing effort creates de facto refugia for elasmobranchs in the Celtic Sea. However, changes in the present fisheries management regime could impair the refuge effect by changing fisher's behaviour and displacing effort into these areas.

  3. Cyanobacteria blooms induce embryonic heart failure in an endangered fish species.

    Science.gov (United States)

    Zi, Jinmei; Pan, Xiaofu; MacIsaac, Hugh J; Yang, Junxing; Xu, Runbing; Chen, Shanyuan; Chang, Xuexiu

    2018-01-01

    Cyanobacterial blooms drive water-quality and aquatic-ecosystem deterioration in eutrophic lakes worldwide, mainly owing to their harmful, secondary metabolites. The response of fish exposed to these cyanobacterial chemicals, however, remains largely unknown. In this paper, we employed an endangered fish species (Sinocyclocheilus grahami) in Dianchi Lake, China to evaluate the risks of cell-free exudates (MaE) produced by a dominant cyanobacterium (Microcystis aeruginosa) on embryo development, as well as the molecular mechanisms responsible. MaE (3d cultured) caused a reduction of fertilization (35.4%) and hatching (15.5%) rates, and increased mortality rates (≤90.0%) and malformation rate (27.6%), typically accompanied by heart failure. Proteomics analysis revealed that two greatest changed proteins - protein S100A1 (over-expressed 26 times compared with control) and myosin light chain (under-expressed 25 fold) - are closely associated with heart function. Further study revealed that heart failure was due to calcium ion imbalance and malformed cardiac structure. We conclude that harmful secondary metabolites from cyanobacteria may adversely affect embryo development in this endangered fish, and possibly contribute to its disappearance and unsuccessful recovery in Dianchi Lake. Hazardous consequences of substances released by cyanobacteria should raise concerns for managers addressing recovery of this and other imperiled species in affected lakes. Copyright © 2017 Elsevier B.V. All rights reserved.

  4. Evaluation of protected, threatened, and endangered fish species in Upper Bear Creek watershed

    International Nuclear Information System (INIS)

    Ryon, M.G.

    1998-07-01

    The East Bear Creek Site for the proposed centralized waste facility on the US Department of Energy's Oak Ridge Reservation was evaluated for potential rare, threatened or endangered (T and E) fish species in the six primary tributaries and the main stem of Bear Creek that are within or adjacent to the facility footprint. These tributaries and portion of Bear Creek comprise the upper Bear Creek watershed. One T and E fish species, the Tennessee dace (Phoxinus tennesseensis), was located in these streams. The Tennessee dace is listed by the State of Tennessee as being in need of management, and as such its habitat is afforded some protection. Surveys indicated that Tennessee dace occupy the northern tributaries NT-1, NT-4, and NT-5, as well as Bear Creek. Several specimens of the dace were gravid females, indicating that the streams may function as reproductive habitat for the species. The implications of impacts on the species are discussed and mitigation objectives are included

  5. Long-term survival despite low genetic diversity in the critically endangered Madagascar fish-eagle

    Science.gov (United States)

    Johnson, J.A.; Tingay, R.E.; Culver, M.; Hailer, F.; Clarke, M.L.; Mindell, D.P.

    2009-01-01

    The critically endangered Madagascar fish-eagle (Haliaeetus vociferoides) is considered to be one of the rarest birds of prey globally and at significant risk of extinction. In the most recent census, only 222 adult individuals were recorded with an estimated total breeding population of no more than 100-120 pairs. Here, levels of Madagascar fish-eagle population genetic diversity based on 47 microsatellite loci were compared with its sister species, the African fish-eagle (Haliaeetus vocifer), and 16 of these loci were also characterized in the white-tailed eagle (Haliaeetus albicilla) and the bald eagle (Haliaeetus leucocephalus). Overall, extremely low genetic diversity was observed in the Madagascar fish-eagle compared to other surveyed Haliaeetus species. Determining whether this low diversity is the result of a recent bottleneck or a more historic event has important implications for their conservation. Using a Bayesian coalescent-based method, we show that Madagascar fish-eagles have maintained a small effective population size for hundreds to thousands of years and that its low level of neutral genetic diversity is not the result of a recent bottleneck. Therefore, efforts made to prevent Madagascar fish-eagle extinction should place high priority on maintenance of habitat requirements and reducing direct and indirect human persecution. Given the current rate of deforestation in Madagascar, we further recommend that the population be expanded to occupy a larger geographical distribution. This will help the population persist when exposed to stochastic factors (e.g. climate and disease) that may threaten a species consisting of only 200 adult individuals while inhabiting a rapidly changing landscape. ?? 2008 The Authors.

  6. Environmental Guidance Program Reference Book: Endangered Species Act and the Fish and Wildlife Coordination Act. Revision 5

    Energy Technology Data Exchange (ETDEWEB)

    1989-01-01

    The Endangered Species Act and the Fish and Wildlife Coordination Act are major federal statutes designed to protect plant and animal resources from adverse effects due to development projects. Both Acts require consultation with wildlife authorities prior to committing resources to certain types of projects. The purposes and requirements of the two statutes are summarized in the following subsections. Also presented is a list of contacts in the regional and field offices of the US Fish and Wildlife Service.

  7. Geographic variation in host fish use and larval metamorphosis for the endangered dwarf wedgemussel

    Science.gov (United States)

    White, Barbara (St. John); Ferreri, C. Paola; Lellis, William A.; Wicklow, Barry J.; Cole, Jeffrey C.

    2017-01-01

    Host fishes play a crucial role in survival and dispersal of freshwater mussels (Unionoida), particularly rare unionids at conservation risk. Intraspecific variation in host use is not well understood for many mussels, including the endangered dwarf wedgemussel (Alasmidonta heterodon) in the USA.Host suitability of 33 fish species for dwarf wedgemussel glochidia (larvae) from the Delaware and Connecticut river basins was tested in laboratory experiments over 9 years. Relative suitability of three different populations of a single host fish, the tessellated darter (Etheostoma olmstedi), from locations in the Connecticut, Delaware, and Susquehanna river basins, was also tested.Connecticut River basin A. heterodon metamorphosed into juvenile mussels on tessellated darter, slimy sculpin (Cottus cognatus), and Atlantic salmon (Salmo salar) parr. Delaware River basin mussels metamorphosed using these three species, as well as brown trout (Salmo trutta), banded killifish (Fundulus diaphanus), mottled sculpin (Cottus bairdii), striped bass (Morone saxatilis), and shield darter (Percina peltata). Atlantic salmon, striped bass, and sculpins were highly effective hosts, frequently generating 5+ juveniles per fish (JPF) and metamorphosis success (MS; proportion of attaching larvae that successfully metamorphose) ≥ 0.4, and producing juveniles in repeated trials.In experiments on tessellated darters, mean JPF and MS values decreased as isolation between the mussel source (Connecticut River) and each fish source increased; mean JPF = 10.45, 6.85, 4.14, and mean MS = 0.50, 0.41, and 0.34 in Connecticut, Delaware, and Susquehanna river darters, respectively. Host suitability of individual darters was highly variable (JPF = 2–11; MS = 0.20–1.0).The results show that mussel–host fish compatibility in A. heterodon differs among Atlantic coastal rivers, and suggest that hosts including anadromous Atlantic salmon and striped bass may help sustain A. heterodon in parts of

  8. Foraging and metabolic consequences of semi-anadromy for an endangered estuarine fish.

    Directory of Open Access Journals (Sweden)

    Bruce G Hammock

    Full Text Available Diadromy affords fish access to productive ecosystems, increasing growth and ultimately fitness, but it is unclear whether these advantages persist for species migrating within highly altered habitat. Here, we compared the foraging success of wild Delta Smelt-an endangered, zooplanktivorous, annual, semi-anadromous fish that is endemic to the highly altered San Francisco Estuary (SFE-collected from freshwater (<0.55 psu and brackish habitat (≥0.55 psu. Stomach fullness, averaged across three generations of wild Delta Smelt sampled from juvenile through adult life stages (n = 1,318, was 1.5-fold higher in brackish than in freshwater habitat. However, salinity and season interacted, with higher fullness (1.7-fold in freshwater than in brackish habitat in summer, but far higher fullness in brackish than freshwater habitat during fall/winter and winter/spring (1.8 and 2.0-fold, respectively. To examine potential causes of this interaction we compared mesozooplankton abundance, collected concurrently with the Delta Smelt, in freshwater and brackish habitat during summer and fall/winter, and the metabolic rate of sub-adult Delta Smelt acclimated to salinities of 0.4, 2.0, and 12.0 psu in a laboratory experiment. A seasonal peak in mesozooplankton density coincided with the summer peak in Delta Smelt foraging success in freshwater, and a pronounced decline in freshwater mesozooplankton abundance in the fall coincided with declining stomach fullness, which persisted for the remainder of the year (fall, winter and spring. In brackish habitat, greater foraging 'efficiency' (prey items in stomachs/mesozooplankton abundance led to more prey items per fish and generally higher stomach fullness (i.e., a higher proportion of mesozooplankton detected in concurrent trawls were eaten by fish in brackish habitat. Delta Smelt exhibited no difference in metabolic rate across the three salinities, indicating that metabolic responses to salinity are unlikely to have

  9. Toxicity of inorganic contaminants, individually and in environmental mixtures, to three endangered fishes (Colorado squawfish, bonytail, and razorback sucker)

    Science.gov (United States)

    Buhl, Kevin J.; Hamilton, S.J.

    1996-01-01

    Two life stages of three federally-listed endangered fishes, Colorado squawfish (Ptychocheilus lucius), bonytail (Gila elegans), and razorback sucker (Xyrauchen texanus) were exposed to copper, selenate, selenite, and zinc individually, and to mixtures of nine inorganics in a reconstituted water that simulated the water quality of the middle Green River, Utah. The mixtures simulated environmental ratios of arsenate, boron, copper, molybdenum, selenate, selenite, uranium, vanadium, and zinc in two tributaries, Ashley Creek and Stewart Lake outlet, of the middle Green River. The rank order of toxicity of the individual inorganics, from most to least toxic, was: copper > zinc > selenite > selenate. Colorado squawfish larvae were more sensitive to all four inorganics and the two mixtures than the juveniles, whereas there was no consistent response between the two life stages for the other two species. There was no consistent difference in sensitivity to the inorganics among the three endangered fishes. Both mixtures exhibited either additive or greater than additive toxicity to these fishes. The primary toxic components in the mixtures, based on toxic units, were copper and zinc. Acute toxicity values were compared to measured environmental concentrations in the two tributaries to derive margins of uncertainty. Margins of uncertainty were low for both mixtures (9–22 for the Stewart Lake outlet mixture, and 12–32 for the Ashley Creek mixture), indicating that mixtures of inorganics derived from irrigation activities may pose a hazard to endangered fishes in the Green River.

  10. CHEMICAL RISKS TO THREATENED AND ENDANGERED FISH SPECIES AT CONCENTRATIONS BELOW WATER QUALITY CRITERIA: IS IT FEASIBLE TO ENSURE PROTECTION OF INDIVIDUALS

    Science.gov (United States)

    The USGS Laboratory in Columbia, Missouri has evaluated the acute sensitivities of 17 threatened and endangered fish species (including three salmonids), to five different chemicals (carbaryl, copper, 4-nonylphenol, pentachlorophenol, and permethrin). The results of these studie...

  11. Distance, dams and drift: What structures populations of an endangered, benthic stream fish?

    Science.gov (United States)

    Roberts, James H.; Angermeier, Paul; Hallerman, Eric M.

    2013-01-01

    Spatial population structure plays an important role in species persistence, evolution and conservation. Benthic stream fishes are diverse and frequently imperilled, yet the determinants and spatial scaling of their population structure are understudied. We investigated the range-wide population genetic structure of Roanoke logperch (Percina rex), an endangered, benthic stream fish of the eastern United States. Fish were sampled from 35 sites and analysed at 11 microsatellite DNA loci. Clustering models were used to sort individuals into genetically cohesive groups and thereby estimate the spatial scaling of population structure. We then used Bayesian generalized linear mixed models (BGLMMs) to test alternative hypotheses about the environmental factors most responsible for generating structure, as measured by the differentiation statistic FST. Clustering models delineated seven discrete populations, whose boundaries coincided with agents of fragmentation, including hydroelectric dams and tailwaters. In the absence of hydrological barriers, gene flow was extensive throughout catchments, whereas there was no evidence for contemporary dispersal between catchments across barriers. In the best-supported BGLMM, FST was positively related to the spatial distance and degree of hydrological alteration between sites and negatively related to genetic diversity within sites. Whereas the effect of tailwaters was equivocal, dams strongly influenced differentiation: the effect of a dam on FST was comparable to that of a between-site distance of over 1200 km of unimpounded river. Overall, the effect of distance-mediated dispersal was negligible compared to the combined effects of fragmentation and genetic drift. The contemporary population structure of P. rex comprises a few geographically extensive ‘islands’ that are fragmented by hydroelectric projects. This information clarifies the importance of a catchment-scale perspective on conserving the species and

  12. Does bioelectrical impedance analysis accurately estimate the condition of threatened and endangered desert fish species?

    Science.gov (United States)

    Dibble, Kimberly L.; Yard, Micheal D.; Ward, David L.; Yackulic, Charles B.

    2017-01-01

    Bioelectrical impedance analysis (BIA) is a nonlethal tool with which to estimate the physiological condition of animals that has potential value in research on endangered species. However, the effectiveness of BIA varies by species, the methodology continues to be refined, and incidental mortality rates are unknown. Under laboratory conditions we tested the value of using BIA in addition to morphological measurements such as total length and wet mass to estimate proximate composition (lipid, protein, ash, water, dry mass, energy density) in the endangered Humpback Chub Gila cypha and Bonytail G. elegans and the species of concern Roundtail Chub G. robusta and conducted separate trials to estimate the mortality rates of these sensitive species. Although Humpback and Roundtail Chub exhibited no or low mortality in response to taking BIA measurements versus handling for length and wet-mass measurements, Bonytails exhibited 14% and 47% mortality in the BIA and handling experiments, respectively, indicating that survival following stress is species specific. Derived BIA measurements were included in the best models for most proximate components; however, the added value of BIA as a predictor was marginal except in the absence of accurate wet-mass data. Bioelectrical impedance analysis improved the R2 of the best percentage-based models by no more than 4% relative to models based on morphology. Simulated field conditions indicated that BIA models became increasingly better than morphometric models at estimating proximate composition as the observation error around wet-mass measurements increased. However, since the overall proportion of variance explained by percentage-based models was low and BIA was mostly a redundant predictor, we caution against the use of BIA in field applications for these sensitive fish species.

  13. Hazard assessment of inorganics to three endangered fish in the Green River, Utah

    Science.gov (United States)

    Hamilton, S.J.

    1995-01-01

    Acute toxicity tests were conducted with three life stages of Colorado squawfish (Ptychocheilus lucius), razorback sucker (Xyrauchen texanus), and bonytail (Gila elegans) in a reconstituted water quality simulating the middle part of the Green River of Utah. Tests were conducted with boron, lithium, selenate, selenite, uranium, vanadium, and zinc. The overall rank order of toxicity to all species and life stages combined from most to least toxic was vanadium = zinc > selenite > lithium = uranium > selenate > boron. There was no difference between the three species in their sensitivity to the seven inorganics based on a rank-order evaluation at the species level. Colorado squawfish were 2-5 times more sensitive to selenate and selenite at the swimup life stage than older stages, whereas razorback suckers displayed equal sensitivity among life stages. Bonytail exhibited equal sensitivity to selenite, but were five times more sensitive to selenate at the swimup life stage than the older stages. Comparison of 96-hr LC50 values with a limited number of environmental water concentrations in Ashley Creek, Utah, which receives irrigation drainwater, revealed moderate hazard ratios for boron, selenate, selenite, and zinc, low hazard ratios for uranium and vanadium, but unknown ratios for lithium. These inorganic contaminants in drainwaters may adversely affect endangered fish in the Green River.

  14. DNA barcoding and microsatellites help species delimitation and hybrid identification in endangered galaxiid fishes.

    Science.gov (United States)

    Vanhaecke, Delphine; Garcia de Leaniz, Carlos; Gajardo, Gonzalo; Young, Kyle; Sanzana, Jose; Orellana, Gabriel; Fowler, Daniel; Howes, Paul; Monzon-Arguello, Catalina; Consuegra, Sofia

    2012-01-01

    The conservation of data deficient species is often hampered by inaccurate species delimitation. The galaxiid fishes Aplochiton zebra and Aplochiton taeniatus are endemic to Patagonia (and for A. zebra the Falkland Islands), where they are threatened by invasive salmonids. Conservation of Aplochiton is complicated because species identification is hampered by the presence of resident as well as migratory ecotypes that may confound morphological discrimination. We used DNA barcoding (COI, cytochrome b) and a new developed set of microsatellite markers to investigate the relationships between A. zebra and A. taeniatus and to assess their distributions and relative abundances in Chilean Patagonia and the Falkland Islands. Results from both DNA markers were 100% congruent and revealed that phenotypic misidentification was widespread, size-dependent, and highly asymmetric. While all the genetically classified A. zebra were correctly identified as such, 74% of A. taeniatus were incorrectly identified as A. zebra, the former species being more widespread than previously thought. Our results reveal, for the first time, the presence in sympatry of both species, not only in Chilean Patagonia, but also in the Falkland Islands, where A. taeniatus had not been previously described. We also found evidence of asymmetric hybridisation between female A. taeniatus and male A. zebra in areas where invasive salmonids have become widespread. Given the potential consequences that species misidentification and hybridisation can have for the conservation of these endangered species, we advocate the use of molecular markers in order to reduce epistemic uncertainty.

  15. 50 CFR 224.104 - Special requirements for fishing activities to protect endangered sea turtles.

    Science.gov (United States)

    2010-10-01

    ... activities to protect endangered sea turtles. 224.104 Section 224.104 Wildlife and Fisheries NATIONAL MARINE... endangered sea turtles. (a) Shrimp fishermen in the southeastern United States and the Gulf of Mexico who comply with rules for threatened sea turtles specified in § 223.206 of this chapter will not be subject...

  16. 78 FR 54553 - Taking of Threatened or Endangered Marine Mammals Incidental to Commercial Fishing Operations...

    Science.gov (United States)

    2013-09-04

    ... pot fishery for the CA/OR/WA fin and sperm whale stocks. Response: NMFS agrees and is issuing the... individuals of three stocks of marine mammals listed as threatened or endangered under the Endangered Species...) and the incidental, but not intentional, taking of individuals from one stock by the Washington/Oregon...

  17. EARLY LIFE STAGE TOXICITY OF COPPER TO ENDANGERED AND SURROGATE FISH SPECIES

    Science.gov (United States)

    Water quality criteria (WQC) for the protection of aquatic life have not explicitly considered the degree of protection afforded to aquatic species listed as endangered or threatened under the U.S. Endangered Species Act (listed species) . Most WQCs are based primarily on respon...

  18. Assessments at multiple levels of biological organization allow for an integrative determination of physiological tolerances to turbidity in an endangered fish species

    OpenAIRE

    Hasenbein, Matthias; Fangue, Nann A.; Geist, Juergen; Komoroske, Lisa M.; Truong, Jennifer; McPherson, Rina; Connon, Richard E.

    2016-01-01

    Turbidity can influence trophic levels by altering species composition and can potentially affect fish feeding strategies and predator?prey interactions. The estuarine turbidity maximum, described as an area of increased suspended particles, phytoplankton and zooplankton, generally represents a zone with higher turbidity and enhanced food sources important for successful feeding and growth in many fish species. The delta smelt (Hypomesus transpacificus) is an endangered, pelagic fish species ...

  19. Germ cell transplantation using sexually competent fish: an approach for rapid propagation of endangered and valuable germlines.

    Directory of Open Access Journals (Sweden)

    Sullip K Majhi

    Full Text Available The transplantation of germ cells into adult recipient gonads is a tool with wide applications in animal breeding and conservation of valuable and/or endangered species; it also provides a means for basic studies involving germ cell (GC proliferation and differentiation. Here we describe the establishment of a working model for xenogeneic germ cell transplantation (GCT in sexually competent fish. Spermatogonial cells isolated from juveniles of one species, the pejerrey Odontesthes bonariensis (Atherinopsidae, were surgically transplanted into the gonads of sexually mature Patagonian pejerrey O. hatcheri, which have been partially depleted of endogenous GCs by a combination of Busulfan (40 mg/kg and high water temperature (25 degrees C treatments. The observation of the donor cells' behavior showed that transplanted spermatogonial cells were able to recolonize the recipients' gonads and resume spermatogenesis within 6 months from the GCT. The presence of donor-derived gametes was confirmed by PCR in 20% of the surrogate O. hatcheri fathers at 6 months and crosses with O. bonariensis mothers produced hybrids and pure O. bonariensis, with donor-derived germline transmission rates of 1.2-13.3%. These findings indicate that transplantation of spermatogonial cells into sexually competent fish can shorten considerably the production time of donor-derived gametes and offspring and could play a vital role in germline conservation and propagation of valued and/or endangered fish species.

  20. NEW DESIGN FOR AIRLIFT PUMP USED IN FISH CULTURE TANKS WITH THE ENDANGERED RIO GRANDE SILVERY MINNOW (Hybognathus amarus

    Directory of Open Access Journals (Sweden)

    Alison M. Hutson

    2012-10-01

    Full Text Available This article describes an airlift pump used to produce a circular flow in a fish culture tank that does not attach to the tank. The design produces an airlift pump that does not swing back and forth or float upwards while in use. It is easy to build, inexpensive, and can be quickly installed and removed so that it does not interfere with sampling or harvest. The airlift pump was evaluated during a 30-d survival trial with the endangered Rio Grande silvery minnow (Hybognathus amarus in 2.44-m-diameter circular tanks (3,666 l. Because the fish is endangered, all new culture units must be evaluated in a survival trial. To be able to use a new 15-tank system, survival had to be evaluated in a random representation of three tanks. U.S. Fish and Wildlife Service, which regulates all activities with this endangered species, decided that permitted take (maximum permitted mortality was 60% for the survival trial; consequently, survival >40% in each tank would be considered successful. Two airlift pumps were placed in each tank. The two airlift pumps moved a mean±SD of 33.697±5.563 l/min; this produced total tank turnovers through the airlift pumps of 110.65±16.93 min. Water velocities were measured at nine locations in the tanks. Water velocities were 0.0-0.04 m/sec. Dissolved oxygen concentration never went below 6.30 mg/l. The airlift pumps operated flawlessly and required no maintenance. They produced water velocities preferred by the fish and helped keep dissolved oxygen concentration above the permitted minimum (5 mg/l. The airlift pumps will be used in future fish culture activities in these and other tanks. Survival in the three tanks was 78%, 94% and 96%; overall survival was 89.3%. Because take (10.7% was under the permitted level (60%, the trial was successful.

  1. 78 FR 59005 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-09-25

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... with Section 10(a)(1)(A) of the ESA of 1973 (16 U.S.C. 1531-1543) and regulations governing listed fish.... Applications Received Permit 1415 The U.S. Fish and Wildlife Services' (USFWS) Red Bluff Fish and Wildlife...

  2. 78 FR 74116 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-12-10

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... plans and request for comment. SUMMARY: Notice is hereby given that the Oregon Department of Fish and... River and Columbia River basins by providing hatchery fish to support fishing opportunities while...

  3. 76 FR 2663 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-01-14

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... and steelhead, and natural juvenile green sturgeon while carrying out a study measuring fish response... species, taking of length measurements), tissue sampling, release of moribund fish or fish carcasses back...

  4. 77 FR 51520 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-08-24

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... (16 U.S.C. 1531-1543) and regulations governing listed fish and wildlife permits (50 CFR parts 222-226... expect to kill any listed fish but a small number, up to 20 percent (equivalent to one fish), may die as...

  5. Effects of enhanced hydrological connectivity on Mediterranean salt marsh fish assemblages with emphasis on the endangered Spanish toothcarp (Aphanius iberus

    Directory of Open Access Journals (Sweden)

    Patricia Prado

    2017-02-01

    Full Text Available The hydrological connectivity between the salt marsh and the sea was partially restored in a Mediterranean wetland containing isolated ponds resulting from former salt extraction and aquaculture activities. A preliminary assessment provided evidence that ponds farther from the sea hosted very large numbers of the endangered Spanish toothcarp, Aphanius iberus, suggesting that individuals had been trapped and consequently reach unnaturally high densities. In order to achieve both habitat rehabilitation and toothcarp conservation, efforts were made to create a gradient of hydrologically connected areas, including isolated fish reservoirs, semi-isolated, and connected salt marsh-sea areas that could allow migratory movements of fish and provide some protection for A. iberus. The fish community was monitored prior to, and for three years after rehabilitation. Results showed an increase in the number of fish species within semi-isolated areas (Zone A, whereas areas adjacent to the sea (Zone B increased the number of marine species and decreased that of estuarine species (ES. Yet overall differences in fish assemblages were much higher between zones than among study years. Generalized linear models (GLMs evidenced that distance to the sea was the most important variable explaining the local diversity of the fish community after restoration, with occasional influence of other factors such as temperature, and depth. The abundance of A. iberus was consistently higher in semi-isolated areas at greater distances from the sea, but a decline occurred in both zones and in isolated reservoir ponds after restoration efforts, which may be attributable to interannual differences in recruitment success and, to a lesser extent, to dispersal into adjacent habitats. A negative effect of restoration works on fish population cannot be excluded, but the final outcome of the intervention likely needs a longer period.

  6. 78 FR 60254 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-10-01

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... regulations governing listed fish and wildlife permits (50 CFR 222-226). NMFS issues permits based on findings... conduct water quality, [[Page 60255

  7. Endangered fish species of Kenya's inland waters with emphasis on Labeo spp

    OpenAIRE

    Kibaara, D.

    1986-01-01

    The importance of water masses, natural or otherwise, in supporting fisheries, and the importance of fish as human food, cannot be overemphasized. The inland waters of Kenya act as habitats for fish, harbouring many different fish species. It has been observed with interest that certain fish species have decreased in numbers over the years within the inland waters. The decline has been at a rate which, if left unchecked, will eventually cause total di...

  8. Preliminary list of endangered fish species (Pisces, Elasmobranchii , Actinopterygii) in Brazil

    OpenAIRE

    Rosa, Ricardo S; Menezes, Naércio A

    1996-01-01

    The Brazilian fish fauna is still poorly known with respect to its diversity and conservation status, particularly of freshwater species. Human activities and population growth are rapidly impacting this fauna to an unchecked extent, so that many fish species are presently threatened. Also, some areas have been so critically altered that their fish fauna can no longer be properly inventoried. There is an urgent need to evaluate the conservation status of Brazilian fish species, since none are...

  9. 78 FR 43858 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-07-22

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... number of predicted adults increase, the number of fish escaping to the spawning grounds will also... fish; and (3) application of a sliding scale approach to determine appropriate ESA take limits on...

  10. 76 FR 2664 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-01-14

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS...) and 14092 (applicant: California Department of Fish and Game). In that notice, the permit application... American green sturgeon associated with conducting surveys measuring fish response to initial and...

  11. 78 FR 28805 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-05-16

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS..., NMFS received an application, including an HGMP, from the Idaho Department of Fish and Game, a section... the Snake River basin, rear juveniles, and release eggs, juveniles, and adult fish into upper Salmon...

  12. 78 FR 28806 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-05-16

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Resources (CDWR), Permit 17428 to the United States Fish and Wildlife Service (USFWS), and Permit 17777 to... NMFS regulations (50 CFR parts 222-226) governing listed fish and wildlife permits. Species Covered in...

  13. 78 FR 79674 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-12-31

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... the ESA (16 U.S.C. 1531 et seq.) and regulations governing listed fish and wildlife permits (50 CFR.... Fish and Wildlife Service (USFWS) submitted an application and supporting documents to NMFS for a...

  14. 75 FR 2106 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2010-01-14

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... NMFS regulations (50 CFR parts 222-226) governing listed fish and wildlife permits. Species Covered in... steelhead not to exceed 2 percent of the total number of fish captured for each life stage and species...

  15. 78 FR 32378 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-05-30

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... application was provided by the Washington Department of Fish and Wildlife (WDFW) and the Public Utility... Department of Fish and Wildlife submitted an application for an ESA permit to operate the Nason Creek spring...

  16. 77 FR 3743 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-01-25

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... with section 10(a)(1)(A) of the ESA of 1973 (16 U.S.C. 1531-1543) and regulations governing listed fish... listed fish but a small number may die as an unintended result of the research activities. The objectives...

  17. 76 FR 8713 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-02-15

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... (16 U.S.C. 1531-1543) and regulations governing listed fish and wildlife permits (50 CFR parts 222-226... handling of fish is already covered under the Incidental Take Statement associated with the Biological...

  18. 78 FR 7755 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-02-04

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS...)(A) of the ESA of 1973 (16 U.S.C. 1531-1543) and regulations governing listed fish and wildlife.... In situations where the SWFSC are unable to rely on collaborators to capture fish through rotary...

  19. 77 FR 24466 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-04-24

    ... anesthetized to limit stress) and released. The IDEQ does not intend to kill any of the fish being captured... fish abundance, smolt-to-adult return rates, and adult productivity in Bear Valley Creek with a high... widely throughout the Salmon River subbasin. The work will benefit fish by giving managers key...

  20. 78 FR 17355 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-03-21

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... 10(a)(1)(A) of the ESA of 1973 (16 U.S.C. 1531-1543) and regulations governing listed fish and... expect to kill any listed fish but a small number may die as an unintended result of the research...

  1. 77 FR 63294 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-10-16

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... Klallam Tribe and the Washington Department of Fish and Wildlife have submitted five Hatchery and Genetic... programs are currently operating, and all five hatchery programs raise fish native to the Elwha River basin...

  2. 78 FR 25954 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-05-03

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... 15, 2012, NMFS received an application, including an HGMP, from the Idaho Department of Fish and Game... salmon returning to the Snake River basin, rear juveniles, and release eggs, juveniles, and adult fish...

  3. 78 FR 18963 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-03-28

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... governing listed fish and wildlife permits (50 CFR parts 222-226). NMFS issues permits based on findings... Administrator for Fisheries, NMFS. Applications Received Permit 17551 The California Department of Fish and...

  4. 77 FR 42278 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-07-18

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... regulations governing listed fish and wildlife permits (50 CFR parts 222-226). NMFS issues permits based on.... This project will examine predation by introduced fishes (striped bass, largemouth bass, smallmouth...

  5. 77 FR 76001 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-12-26

    ... and Threatened Species; Take of Anadromous Fish AGENCY: National Marine Fisheries Service (NMFS... regulations governing listed fish and wildlife permits(50 CFR parts 222-226). NMFS issues permits based on... described below, researchers do not expect to kill any listed fish but a small number may die as an...

  6. Conservation and Management for Fish-eating Birds and Endangered Salmon

    Science.gov (United States)

    D. D. Roby; K. Collis; D. E. Lyons

    2005-01-01

    A conflict involving piscivorous birds and salmonids in the Pacific Northwest pits the conservation of protected migratory waterbirds against the restoration of Columbia Basin salmonids (Oncorhynchus spp.) that are listed under the U.S. Endangered Species Act. The Columbia River Avian Predation Project is a cooperative, collaborative research project...

  7. Comparative cytogenetics of two endangered leuciscine fish, Squalius aradensis and S. torgalensis (Teleostei, Cyprinidae, from the Iberian Peninsula

    Directory of Open Access Journals (Sweden)

    Catarina Nabais

    2013-03-01

    Full Text Available In this study, the description of the karyotypes of the endangered chubs Squalius aradensis (Coelho, Bogutskaya, Rodrigues and Collares-Pereira, 1998 and Squalius torgalensis (Coelho, Bogutskaya, Rodrigues and Collares-Pereira, 1998 is presented by means of conventional (Giemsa-staining, Chromomycin A3 (CMA3-fluorescence, Silver-impregnation (Ag-NORs and molecular (fluorescence in situ hybridization (FISH with 18S rDNA probe protocols. These endemic sister-species have an allopatric but adjacent distribution in the most southwestern part of the Iberian Peninsula. Diploid chromosome number was invariably 2n = 50 and karyotypes of both species were grossly similar, composed of metacentric and submetacentric elements with a reduced number of acrocentric pairs. Sequential staining using FISH with an 18S rDNA probe, CMA3 and Ag-NORs treatments revealed consistent positive signals located at the end of the short arms of a submetacentric chromosome pair, likely homologous in both species. While providing useful cytogenetic comparative data against other members of the genus Squalius Bonaparte, 1837, the work aimed to draw attention towards the conservation of two narrow-range and highly confined fish species.

  8. A new species of Dactylogyrus (Monogenea: Dactylogyridae) parasitic on an endangered freshwater fish, Rhodeus atremius atremius, endemic to Japan.

    Science.gov (United States)

    Nitta, Masato; Nagasawa, Kazuya

    2016-10-01

    A new dactylogyrid monogenean Dactylogyrus bicorniculus sp. nov. is described from the gills of the kazetoge bitterling, Rhodeus atremius atremius (Jordan and Thompson, 1914), an endemic species in Japan, from Saga Prefecture, northern Kyūshū. D. bicorniculus sp. nov. resembles Dactylogyrus bicornis Malevitskaja, 1941 and Dactylogyrus lophogonus Zhang and Ji, 1980 because they have two common features, a large V-shaped ventral bar and well-developed second marginal hooks. However, the new species is distinguished from these congeners by a shorter penis and an accessory piece. A phylogenetic analysis of 28S rDNA shows that D. bicorniculus sp. nov. is a basal species with the T-shaped ventral bar in the genus. The new species has strict host-specificity to R. a. atremius, one of the endangered freshwater fishes in Japan, and may face the danger of co-extinction with its host. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

  9. Identifying a breeding habitat of a critically endangered fish, Acheilognathus typus, in a natural river in Japan

    Science.gov (United States)

    Sakata, Masayuki K.; Maki, Nobutaka; Sugiyama, Hideki; Minamoto, Toshifumi

    2017-12-01

    Freshwater biodiversity has been severely threatened in recent years, and to conserve endangered species, their distribution and breeding habitats need to be clarified. However, identifying breeding sites in a large area is generally difficult. Here, by combining the emerging environmental DNA (eDNA) analysis with subsequent traditional collection surveys, we successfully identified a breeding habitat for the critically endangered freshwater fish Acheilognathus typus in the mainstream of Omono River in Akita Prefecture, Japan, which is one of the original habitats of this species. Based on DNA cytochrome B sequences of A. typus and closely related species, we developed species-specific primers and a probe that were used in real-time PCR for detecting A. typus eDNA. After verifying the specificity and applicability of the primers and probe on water samples from known artificial habitats, eDNA analysis was applied to water samples collected at 99 sites along Omono River. Two of the samples were positive for A. typus eDNA, and thus, small fixed nets and bottle traps were set out to capture adult fish and verify egg deposition in bivalves (the preferred breeding substrate for A. typus) in the corresponding regions. Mature female and male individuals and bivalves containing laid eggs were collected at one of the eDNA-positive sites. This was the first record of adult A. typus in Omono River in 11 years. This study highlights the value of eDNA analysis to guide conventional monitoring surveys and shows that combining both methods can provide important information on breeding sites that is essential for species' conservation.

  10. Identifying a breeding habitat of a critically endangered fish, Acheilognathus typus, in a natural river in Japan.

    Science.gov (United States)

    Sakata, Masayuki K; Maki, Nobutaka; Sugiyama, Hideki; Minamoto, Toshifumi

    2017-11-14

    Freshwater biodiversity has been severely threatened in recent years, and to conserve endangered species, their distribution and breeding habitats need to be clarified. However, identifying breeding sites in a large area is generally difficult. Here, by combining the emerging environmental DNA (eDNA) analysis with subsequent traditional collection surveys, we successfully identified a breeding habitat for the critically endangered freshwater fish Acheilognathus typus in the mainstream of Omono River in Akita Prefecture, Japan, which is one of the original habitats of this species. Based on DNA cytochrome B sequences of A. typus and closely related species, we developed species-specific primers and a probe that were used in real-time PCR for detecting A. typus eDNA. After verifying the specificity and applicability of the primers and probe on water samples from known artificial habitats, eDNA analysis was applied to water samples collected at 99 sites along Omono River. Two of the samples were positive for A. typus eDNA, and thus, small fixed nets and bottle traps were set out to capture adult fish and verify egg deposition in bivalves (the preferred breeding substrate for A. typus) in the corresponding regions. Mature female and male individuals and bivalves containing laid eggs were collected at one of the eDNA-positive sites. This was the first record of adult A. typus in Omono River in 11 years. This study highlights the value of eDNA analysis to guide conventional monitoring surveys and shows that combining both methods can provide important information on breeding sites that is essential for species' conservation.

  11. First record of Chilodonella piscicola (Ciliophora: Chilodonellidae) from two endangered fishes, Schizothorax o'connori and Oxygymnocypris stewartii in Tibet.

    Science.gov (United States)

    Deng, Qiong; Guo, Qingxiang; Zhai, Yanhua; Wang, Zhe; Gu, Zemao

    2015-08-01

    Schizothorax o'connori and Oxygymnocypris stewartii are two endangered endemic Tibetan fishes that thrive in the Lhasa River at an average altitude over 4000 m. During artificial reproduction of endemic Tibetan fishes, the juvenile fish of S. o'connori and O. stewartii experienced mass mortality event. The causative agent is diagnosed to be a ciliate parasite, Chilodonella piscicola (syn. C. cyprini), which is common in various fishes. Here, we supplemented its description based on the morphological and molecular data. The body of C. piscicola is oval, 30-60 × 25-40 μm in vivo. Cyrtos is hook-like, composed of 9-10 toothed nematodesmal rods. Somatic kineties usually contain seven right kineties and nine left kineties. Two parallel circumoral kineties revolve round the cyrtos, and one preoral kinety extends to the anterior end of the fourth left-most kinety. Terminal fragment kinety is linear and on the top left of dorsal side. Sequence alignments revealed that the present SSU rDNA and ITS1-5.8S-ITS2 sequences are both most similar to the sequences of C. uncinata with the similarities of 98.2 and 99.5%. The phylogenetic analyses showed that C. piscicola is sister to other Chilodonella species, whereas C. cyprini (FJ873805) cluster with Tetrahymena species. Molecular analysis shows that the ITS1-5.8S-ITS2 sequence of C. cyprini in GenBank is unreliable. Our study extended the host range of C. piscicola and supplemented and revised the molecular data. Besides, as far as we know, this is the first record of C. piscicola in Tibetan plateau.

  12. 77 FR 67794 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-11-14

    ... after the Federal cleanup of the Monte Cristo Mining Area (mined from 1889 to 1907) for the Washington... purpose of the study is to count listed fish during their peak outmigrations and thereby determine how...

  13. 76 FR 21857 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-04-19

    ... should be submitted to the Protected Resources Division, NMFS, 1655 Heindon Road, Arcata, CA 95521... studies described below, researchers do not expect to kill any listed fish but a small number may die as...

  14. 76 FR 20956 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-04-14

    ... than 5 p.m. Pacific standard time on May 16, 2011. ADDRESSES: Written comments on this application... from the Iron Gate Hatchery in California, transport fish to the John L. Fryer Disease Laboratory in...

  15. Extirpation and recolonization in a metapopulation of an endangered fish, the tidewater goby

    Science.gov (United States)

    Lafferty, K.D.; Swift, C.C.; Ambrose, R.F.

    1999-01-01

    The tidewater goby (Eucyclogobius newberryi), an endangered species in the United States, occurs in a series of isolated coastal wetlands in California. Using historical presence-absence data and our own surveys, we estimated annual rates of extirpation and recolonization for several populations of the goby in southern California. As predicted, large wetlands had lower rates of extirpation than small wetlands. There was a negative but statistically nonsignificant correlation between recolonization rate and distance to the nearest northerly source population. Populations at small sites were sensitive to drought, presumably because droughts can eliminate suitable habitat at small wetlands. Populations in small wetlands have declined over time, even after accounting for variation in stream flow, supporting the species' endangered status. Our study emphasizes the need to understand metapopulation dynamics for conserving species where the unit of conservation is a local population. It is also emphasizes the importance of not treating metapopulations as identical units. Finally, our results provide a means for describing the decline of a species that is complex in time and space and provide insight into how to target protection measures among metapopulations.

  16. Activation of free sperm and dissociation of sperm bundles (spermatozeugmata) of an endangered viviparous fish, Xenotoca eiseni.

    Science.gov (United States)

    Liu, Yue; Yang, Huiping; Torres, Leticia; Tiersch, Terrence R

    2018-04-01

    Knowledge of sperm motility activation for viviparous fishes has been limited to study of several species in Poeciliidae, and the dissociation of sperm bundles is even less understood. The goal of this study was to use the endangered Redtail Splitfin (Xenotoca eiseni) as a model to investigate the activation of sperm from viviparous fishes by study of free sperm and spermatozeugmata (unencapsulated sperm bundles). The specific objectives were to evaluate the effects of: (1) osmotic pressure and refrigerated storage (4 °C) on activation of free sperm, (2) osmotic pressure, ions, and pH on dissociation of spermatozeugmata, and (3) CaCl 2 concentration and pH on sperm membrane integrity. Free sperm were activated in Ca 2+ -free Hanks' balanced salt solution at 81-516 mOsmol/kg. The highest motility (19 ± 6%) was at 305 mOsmol/kg and swim remained for 84 h. Glucose (300-700 mOsmol/kg), NaCl (50-600 mOsmol/kg), and KCl, MgCl 2 , and MnCl 2 at 5-160 mM activated sperm within spermatozeugmata, but did not dissociate spermatozeugmata. CaCl 2 at 5-160 mM dissociated spermatozeugmata within 10 min. Solutions of NaCl-NaOH at pH 11.6 to 12.4 dissociated spermatozeugmata within 1 min. The percentage of viable cells had no significant differences (P = 0.2033) among different concentrations of CaCl 2 , but it was lower (P fishes, and for development of germplasm repositories for imperiled goodeids. Copyright © 2018 Elsevier Inc. All rights reserved.

  17. Coupled Downscaled Climate Models and Ecophysiological Metrics Forecast Habitat Compression for an Endangered Estuarine Fish.

    Directory of Open Access Journals (Sweden)

    Larry R Brown

    Full Text Available Climate change is driving rapid changes in environmental conditions and affecting population and species' persistence across spatial and temporal scales. Integrating climate change assessments into biological resource management, such as conserving endangered species, is a substantial challenge, partly due to a mismatch between global climate forecasts and local or regional conservation planning. Here, we demonstrate how outputs of global climate change models can be downscaled to the watershed scale, and then coupled with ecophysiological metrics to assess climate change effects on organisms of conservation concern. We employed models to estimate future water temperatures (2010-2099 under several climate change scenarios within the large heterogeneous San Francisco Estuary. We then assessed the warming effects on the endangered, endemic Delta Smelt, Hypomesus transpacificus, by integrating localized projected water temperatures with thermal sensitivity metrics (tolerance, spawning and maturation windows, and sublethal stress thresholds across life stages. Lethal temperatures occurred under several scenarios, but sublethal effects resulting from chronic stressful temperatures were more common across the estuary (median >60 days above threshold for >50% locations by the end of the century. Behavioral avoidance of such stressful temperatures would make a large portion of the potential range of Delta Smelt unavailable during the summer and fall. Since Delta Smelt are not likely to migrate to other estuaries, these changes are likely to result in substantial habitat compression. Additionally, the Delta Smelt maturation window was shortened by 18-85 days, revealing cumulative effects of stressful summer and fall temperatures with early initiation of spring spawning that may negatively impact fitness. Our findings highlight the value of integrating sublethal thresholds, life history, and in situ thermal heterogeneity into global change impact

  18. Coupled downscaled climate models and ecophysiological metrics forecast habitat compression for an endangered estuarine fish

    Science.gov (United States)

    Brown, Larry R.; Komoroske, Lisa M; Wagner, R Wayne; Morgan-King, Tara; May, Jason T.; Connon, Richard E; Fangue, Nann A.

    2016-01-01

    Climate change is driving rapid changes in environmental conditions and affecting population and species’ persistence across spatial and temporal scales. Integrating climate change assessments into biological resource management, such as conserving endangered species, is a substantial challenge, partly due to a mismatch between global climate forecasts and local or regional conservation planning. Here, we demonstrate how outputs of global climate change models can be downscaled to the watershed scale, and then coupled with ecophysiological metrics to assess climate change effects on organisms of conservation concern. We employed models to estimate future water temperatures (2010–2099) under several climate change scenarios within the large heterogeneous San Francisco Estuary. We then assessed the warming effects on the endangered, endemic Delta Smelt, Hypomesus transpacificus, by integrating localized projected water temperatures with thermal sensitivity metrics (tolerance, spawning and maturation windows, and sublethal stress thresholds) across life stages. Lethal temperatures occurred under several scenarios, but sublethal effects resulting from chronic stressful temperatures were more common across the estuary (median >60 days above threshold for >50% locations by the end of the century). Behavioral avoidance of such stressful temperatures would make a large portion of the potential range of Delta Smelt unavailable during the summer and fall. Since Delta Smelt are not likely to migrate to other estuaries, these changes are likely to result in substantial habitat compression. Additionally, the Delta Smelt maturation window was shortened by 18–85 days, revealing cumulative effects of stressful summer and fall temperatures with early initiation of spring spawning that may negatively impact fitness. Our findings highlight the value of integrating sublethal thresholds, life history, and in situ thermal heterogeneity into global change impact assessments. As

  19. 76 FR 71315 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-11-17

    ... species and population level abundance and timing, (2) determine growth rate, size, food habits, and... benefit listed species by helping managers at the power facility tailor their operations to cause the... research would benefit the fish by helping managers at the power facility determine the best way to conduct...

  20. 78 FR 1201 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-01-08

    ... Received Permit 1124--5R The Idaho Department of Fish and Game (IDFG) is seeking to renew for five years a... sockeye salmon in need of help due to circumstances such as being trapped by low flows. The benefits to...-- Adult Chinook Salmon Abundance Monitoring Using Video Weirs, Acoustic Imaging, and PIT tag Detectors in...

  1. 78 FR 24382 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-04-25

    ... design forest management activities (e.g., timber sales, grazing plans, road building) in such a way as to conserve listed species. The USFS does not intend to kill any of the listed fish being captured... projects. The researchers do not propose to kill any of the listed salmonids being captured, but a small...

  2. 76 FR 31590 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-06-01

    ... online at: https://apps.nmfs.noaa.gov/preview/preview_open_for_comment.cfm . These documents are also... to the disadvantage of the listed species which are the subject of the permits; and (3) are... included in the annual California Department of Fish and Game research program under the ESA 4(d) rule for...

  3. 77 FR 24469 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2012-04-24

    ... be viewed online at: https://apps.nmfs.noaa.gov/preview/preview_open_for_comment.cfm . These... operate to the disadvantage of the listed species which are the subject of the permits; and (3) are... Fisheries, NMFS. Applications Received Permit 14808 The California Department of Fish and Game (CDFG) is...

  4. 76 FR 35842 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-06-20

    ... operations are important requirements to increase productivity. While hatchery production will be required... supports treaty Indian fishing rights, the rebuilding of the ecological productivity of the individual... for rebuilding the health and productivity of Puget Sound. NMFS acknowledges that consultations among...

  5. 78 FR 28807 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2013-05-16

    .../modifications: (1) Are applied for in good faith; (2) would not operate to the disadvantage of the listed... June 30. As traps are operated, data will be collected on fish abundance, trap operational status, and...- San Joaquin Delta, California. The primary objectives to which ESA- listed salmonids and SDPS green...

  6. 76 FR 6400 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-02-04

    ... promote local adaptation, and (5) use spring-run Chinook salmon demographic, biological, and genetic data...). The application includes a Hatchery and Genetic Management Plan (HGMP) that provides detailed... and desired genetic and phenotypic characteristics of the fish, and therefore increase the likelihood...

  7. 76 FR 27017 - Endangered and Threatened Species; Take of Anadromous Fish

    Science.gov (United States)

    2011-05-10

    ... FURTHER INFORMATION CONTACT: Garth Griffin, Portland, OR, ph.: 503- 231-2005, Fax: 503-230-5441, e-mail... Snohomish River estuary, and Shilshole Bay, Washington. The goal of these projects is to understand changes....g., trophic web effects, plant and animal community dynamics, and forage fish population...

  8. Assessing the viability of the Species at Risk Act in managing commercial exploitation and recovery of threatened and endangered marine fish in Canada

    OpenAIRE

    Druce, Courtney Danielle

    2012-01-01

    Commercially exploited threatened or endangered marine fish are consistently declined for listing under Canada’s Species at Risk Act (SARA), largely due to predicted socio-economic impacts associated with SARA’s prohibitions. However, commercial exploitation can be exempted from SARA’s general prohibitions. If exemptions were utilized, commercially exploited species could benefit from other aspects of SARA listing, and support continued economic opportunities for fishers. I conducted a litera...

  9. Decline of the North Sea houting: protective measures for an endangered anadromous fish

    DEFF Research Database (Denmark)

    Jepsen, Niels; Deacon, Michael; Koed, Anders

    2012-01-01

    Once an abundant fish species in the rivers of the Wadden Sea in northwest Europe, the North Sea houting Coregonus oxyrinchus (NSH) was at the brink of extinction 25 yr ago. The very last stronghold for this species was in the small Danish River Vidaa. In an attempt to preserve this anadromous...... whitefish species, juveniles were hatchery-reared and stocked in 6 Danish rivers flowing into the Wadden Sea. These stocking efforts were fairly successful, and the houting established populations in at least 2 of the rivers, but the underlying problem of habitat degradation and migration obstacles...... they reach sexual maturity, NSH grow relatively slowly (mean: 2.55 cm yr−1, ranging from 0 to 13.8 cm yr−1) and can reach an age of 10 to 12 yr. The number of repeated recaptures year after year indicates low mortality for adult fish. Six individuals were recaptured in rivers other than the one in which...

  10. Molecular markers reveal spatially segregated cryptic species in a critically endangered fish, the common skate (Dipturus batis).

    Science.gov (United States)

    Griffiths, Andrew M; Sims, David W; Cotterell, Stephen P; El Nagar, Aliya; Ellis, Jim R; Lynghammar, Arve; McHugh, Matthew; Neat, Francis C; Pade, Nicolas G; Queiroz, Nuno; Serra-Pereira, Bárbara; Rapp, Toby; Wearmouth, Victoria J; Genner, Martin J

    2010-05-22

    Many sharks and skates are particularly vulnerable to overfishing because of their large size, slow growth, late maturity and low fecundity. In Europe dramatic population declines have taken place in common skate (Dipturus batis L.), one of the largest demersal fish in regional shelf seas, leading to extirpations from substantial parts of its former range. Here we report the discovery of cryptic species in common skate collected from the northeast Atlantic continental shelf. Data from nuclear microsatellite markers indicated two clearly distinct clades and phylogenetic analysis of mitochondrial DNA sequences demonstrated monophyly of each one of them. Capture locations showed evidence of strong spatial segregation, with one taxon occurring mainly in waters off the southern British Isles and around Rockall, while the other was restricted to more northerly shelf waters. These apparently cryptic species showed overlapping substrate and depth preferences, but distributional limits were closely related to temperature gradients, potentially indicating thermal limits to their distributions. This discovery of hidden diversity within a large, critically endangered marine vertebrate demonstrates how marine biodiversity can be underestimated, even in such a relatively well-studied and heavily exploited region.

  11. Molecular markers reveal spatially segregated cryptic species in a critically endangered fish, the common skate (Dipturus batis)

    Science.gov (United States)

    Griffiths, Andrew M.; Sims, David W.; Cotterell, Stephen P.; El Nagar, Aliya; Ellis, Jim R.; Lynghammar, Arve; McHugh, Matthew; Neat, Francis C.; Pade, Nicolas G.; Queiroz, Nuno; Serra-Pereira, Bárbara; Rapp, Toby; Wearmouth, Victoria J.; Genner, Martin J.

    2010-01-01

    Many sharks and skates are particularly vulnerable to overfishing because of their large size, slow growth, late maturity and low fecundity. In Europe dramatic population declines have taken place in common skate (Dipturus batis L.), one of the largest demersal fish in regional shelf seas, leading to extirpations from substantial parts of its former range. Here we report the discovery of cryptic species in common skate collected from the northeast Atlantic continental shelf. Data from nuclear microsatellite markers indicated two clearly distinct clades and phylogenetic analysis of mitochondrial DNA sequences demonstrated monophyly of each one of them. Capture locations showed evidence of strong spatial segregation, with one taxon occurring mainly in waters off the southern British Isles and around Rockall, while the other was restricted to more northerly shelf waters. These apparently cryptic species showed overlapping substrate and depth preferences, but distributional limits were closely related to temperature gradients, potentially indicating thermal limits to their distributions. This discovery of hidden diversity within a large, critically endangered marine vertebrate demonstrates how marine biodiversity can be underestimated, even in such a relatively well-studied and heavily exploited region. PMID:20106849

  12. Endangered Species Act

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The purpose of the Endangered Species Act (ESA) is to protect and recover imperiled species and the ecosystems upon which they depend. The U.S. Fish and Wildlife...

  13. Genetic Diversity of the Endangered Neotropical Cichlid Fish (Gymnogeophagus setequedas) in Brazil

    Science.gov (United States)

    Souza-Shibatta, Lenice; Kotelok-Diniz, Thais; Ferreira, Dhiego G.; Shibatta, Oscar A.; Sofia, Silvia H.; de Assumpção, Lucileine; Pini, Suelen F. R.; Makrakis, Sergio; Makrakis, Maristela C.

    2018-01-01

    Gymnogeophagus setequedas is a rare and rheophilic species of tribe Geophagini, considered endangered in Brazilian red lists. Its previously known geographical distribution range was the Paraná River basin, in Paraguay, and a tributary of the Itaipu Reservoir in Brazil. Since its description no specimens have been collected in the original known distribution area. However, recent records of G. setequedas in the lower Iguaçu River, in a region considered highly endemic for the ichthyofauna, extended the known geographical distribution and may represent one of the last remnants of the species. The aim of this study was to estimate the genetic diversity and population structure of G. setequedas, using microsatellite markers and mitochondrial haplotypes, in order to test the hypothesis of low genetic diversity in this restricted population. Muscular tissue samples of 86 specimens were obtained from nine locations in the Lower Iguaçu River basin, between upstream of the Iguaçu Falls and downstream of the Salto Caxias Reservoir. Seven microsatellites loci were examined and a total of 120 different alleles were obtained. The number of alleles per locus (NA) was 17.429, effective alleles (NE) 6.644, expected heterozygosity (HE) 0.675, observed (HO) heterozygosity 0.592, and inbreeding coefficient (FIS) 0.128. Twelve haplotypes in the D-Loop region were revealed, with values of h (0.7642) and π (0.00729), suggesting a large and stable population with a long evolutionary history. Thus, both molecular markers revealed high levels of genetic diversity and indicated the occurrence of a single G. setequedas population distributed along a stretch of approximately 200 km. The pattern of mismatch distribution was multimodal, which is usually ascribed to populations in demographic equilibrium. Nevertheless, the construction of a new hydroelectric power plant, already underway between the Salto Caxias Reservoir and Iguaçu Falls, could fragment this population, causing loss of

  14. Genetic Diversity of the Endangered Neotropical Cichlid Fish (Gymnogeophagus setequedas in Brazil

    Directory of Open Access Journals (Sweden)

    Lenice Souza-Shibatta

    2018-02-01

    Full Text Available Gymnogeophagus setequedas is a rare and rheophilic species of tribe Geophagini, considered endangered in Brazilian red lists. Its previously known geographical distribution range was the Paraná River basin, in Paraguay, and a tributary of the Itaipu Reservoir in Brazil. Since its description no specimens have been collected in the original known distribution area. However, recent records of G. setequedas in the lower Iguaçu River, in a region considered highly endemic for the ichthyofauna, extended the known geographical distribution and may represent one of the last remnants of the species. The aim of this study was to estimate the genetic diversity and population structure of G. setequedas, using microsatellite markers and mitochondrial haplotypes, in order to test the hypothesis of low genetic diversity in this restricted population. Muscular tissue samples of 86 specimens were obtained from nine locations in the Lower Iguaçu River basin, between upstream of the Iguaçu Falls and downstream of the Salto Caxias Reservoir. Seven microsatellites loci were examined and a total of 120 different alleles were obtained. The number of alleles per locus (NA was 17.429, effective alleles (NE 6.644, expected heterozygosity (HE 0.675, observed (HO heterozygosity 0.592, and inbreeding coefficient (FIS 0.128. Twelve haplotypes in the D-Loop region were revealed, with values of h (0.7642 and π (0.00729, suggesting a large and stable population with a long evolutionary history. Thus, both molecular markers revealed high levels of genetic diversity and indicated the occurrence of a single G. setequedas population distributed along a stretch of approximately 200 km. The pattern of mismatch distribution was multimodal, which is usually ascribed to populations in demographic equilibrium. Nevertheless, the construction of a new hydroelectric power plant, already underway between the Salto Caxias Reservoir and Iguaçu Falls, could fragment this population

  15. Genetic Diversity of the Endangered Neotropical Cichlid Fish (Gymnogeophagus setequedas) in Brazil.

    Science.gov (United States)

    Souza-Shibatta, Lenice; Kotelok-Diniz, Thais; Ferreira, Dhiego G; Shibatta, Oscar A; Sofia, Silvia H; de Assumpção, Lucileine; Pini, Suelen F R; Makrakis, Sergio; Makrakis, Maristela C

    2018-01-01

    Gymnogeophagus setequedas is a rare and rheophilic species of tribe Geophagini, considered endangered in Brazilian red lists. Its previously known geographical distribution range was the Paraná River basin, in Paraguay, and a tributary of the Itaipu Reservoir in Brazil. Since its description no specimens have been collected in the original known distribution area. However, recent records of G. setequedas in the lower Iguaçu River, in a region considered highly endemic for the ichthyofauna, extended the known geographical distribution and may represent one of the last remnants of the species. The aim of this study was to estimate the genetic diversity and population structure of G. setequedas , using microsatellite markers and mitochondrial haplotypes, in order to test the hypothesis of low genetic diversity in this restricted population. Muscular tissue samples of 86 specimens were obtained from nine locations in the Lower Iguaçu River basin, between upstream of the Iguaçu Falls and downstream of the Salto Caxias Reservoir. Seven microsatellites loci were examined and a total of 120 different alleles were obtained. The number of alleles per locus ( N A ) was 17.429, effective alleles ( N E ) 6.644, expected heterozygosity ( H E ) 0.675, observed ( H O ) heterozygosity 0.592, and inbreeding coefficient ( F IS ) 0.128. Twelve haplotypes in the D-Loop region were revealed, with values of h (0.7642) and π (0.00729), suggesting a large and stable population with a long evolutionary history. Thus, both molecular markers revealed high levels of genetic diversity and indicated the occurrence of a single G. setequedas population distributed along a stretch of approximately 200 km. The pattern of mismatch distribution was multimodal, which is usually ascribed to populations in demographic equilibrium. Nevertheless, the construction of a new hydroelectric power plant, already underway between the Salto Caxias Reservoir and Iguaçu Falls, could fragment this population

  16. The unique karyotype of Henochilus wheatlandii, a critically endangered fish living in a fast-developing region in Minas Gerais State, Brazil.

    Directory of Open Access Journals (Sweden)

    Priscilla C Silva

    Full Text Available Henochilus wheatlandii, the only species of this genus, is critically endangered and was considered extinct for over a century. The rediscovery of this fish in 1996 made it possible to study its phylogenetic relationships with other species in the subfamily Bryconinae. The aim of this study was to characterise the karyotype of H. wheatlandii. Standard staining, C-positive heterochromatin and nucleolar organiser region (NOR banding, chromomycin A(3 staining, and fluorescent in situ hybridisation (FISH using 5S rDNA and 18S rDNA probes were conducted on nineteen specimens collected in the Santo Antonio River, a sub-basin of the Doce River in Ferros municipality, Minas Gerais State, Brazil. Henochilus wheatlandii shared the same diploid number and chromosome morphology as other species of Bryconinae. However, its heterochromatin distribution patterns, NOR localisation, and FISH patterns revealed a cytogenetic profile unique among Neotropical Bryconinae, emphasizing the evolutionary uniqueness of this threatened species.

  17. Cryopreservation of sperm of an indigenous endangered fish species Nandus nandus (Hamilton, 1822) for ex-situ conservation.

    Science.gov (United States)

    Sarder, M Rafiqul Islam; Sarker, M F Monowar; Saha, Shankar K

    2012-12-01

    This study dealt with the development of cryopreservation protocol for Nandus nandus, which entailed a number of experiments. Sperm was collected by sacrificing males. The collected sperm was suspended in extenders. Activation of sperm motility was evaluated in different osmolalities of NaCl. Motility of sperm decreased as the osmolality of the extender increased and was completely inhibited at almost 319 mOs mol/kg. To evaluate the toxicity of cryoprotectant, sperm was incubated with DMSO, methanol and ethanol at 5%, 10% and 15% concentrations, respectively, for 5-35 min. Five and ten percent of cryoprotectants produced better motility during 5 and 10 min incubation. Sperm incubated with 15% cryoprotectant seemed to be toxic and this concentration was excluded in the subsequent trials. Three extenders, namely, Alsever's solution, egg-yolk citrate and urea egg-yolk and three cryoprotectants, DMSO, methanol and ethanol were employed to preserve the sperm. Alsever's solution with 10% DMSO showed best performance producing 90.0±1.8% and 75.0±2.5% equilibration and post-thaw motility followed by that of 82.5±4.2% and 62.5±5.5% with Alsever's solution plus methanol, respectively. Between two diluents, sperm preserved with Alsever's solution plus DMSO produced highest fertilization (76.7±3.3%) and hatching (43.8±7.9%) while fresh sperm yielded 83.3±6.7% and 64.0±10.4% fertilization and hatching, respectively. The protocol developed through the study can be applied for long-term conservation of genetic materials of the endangered fish N. nandus and the cryopreserved sperm can be used in artificial breeding for generating new individuals. Copyright © 2012 Elsevier Inc. All rights reserved.

  18. Vg mRNA induction in an endangered fish species (Anguilla anguilla) from the Loire estuary (France).

    Science.gov (United States)

    Blanchet-Letrouvé, Isabelle; Lafont, Anne-Gaëlle; Poirier, Laurence; Baloche, Sylvie; Zalouk-Vergnoux, Aurore; Dufour, Sylvie; Mouneyrac, Catherine

    2013-11-01

    Estuarine zones are extremely fragile due to increasing stress from anthropogenic activities. Among those, the Loire estuary (France) is potentially exposed to various contaminants including Endocrine Disruptors Compounds (EDCs) able to impact the reproduction physiology of fish. The European eel (Anguilla anguilla), endangered fish species, is apparently not relevant, in its yellow stage, to monitor the effects of endocrine disruption. Despite this weakly responsiveness, this study aimed to investigate whether European eel from the Loire estuary may still be the subject of estrogenic disruption quantifying the hepatic Vg gene expression according to gender and sexual stage. Vitellogenin (Vg) appears as a valuable biomarker of EDCs, as well as for exposure and effects. Quantitative real-time Reverse Transcription Polymerase Chain Reaction (q RT PCR) was used in this study to amplify responses of hepatic Vg transcripts. European eels were sampled in May 2009 (N=57) and November 2010 (during the downstream migration, N=10) in two sites of the Loire estuary with different ecological conditions and contamination pressures (upstream: Varades; downstream: Nantes). Reproductive (gender, sexual maturity stage) and biometric parameters of collected eels were determined. A laboratory exposure of silver male to steroid hormones (Testosterone (T), 11-KetoTestosterone (11-KT), Estradiol (E2)) was conducted in parallel to validate the q RT PCR approach on hepatic Vg mRNA. Results demonstrated the responsiveness of exposed silver male eels, since hepatic mRNA Vg induction was observed in E2 treated males compared to control specimens. In the field, results of female silver eels reflected large inter-individual differences in the activation of hepatic Vg at silvering. However, while only female silver eels should express hepatic Vg mRNA, quantifiable levels were also detected in a proportion of 38% of the other individuals sampled, normally not inclined to express it, those being

  19. Biological Aspects of the Critically Endangered Fish, Labeo boga in the Ganges River, Northwestern Bangladesh

    International Nuclear Information System (INIS)

    Hossain, M.Y.; Jahan, S.; Jewel, M.A.S.

    2015-01-01

    The present study reports the first complete and inclusive description of some biological parameters including length-frequency distribution (LFD), sex ratio (SR), length-weight relationship (LWR), condition factors (allometric, KA; Fultons, KF; relative, KR and relative weight, WR) and form factor (a3.0) of Labeo boga in the Ganges River, northwestern Bangladesh. Sampling was conducted using traditional fishing gears during April 2011 to March 2012. For each specimen, total length (TL) was measured to the nearest 0.01 cm using digital slide calipers and total body weight (BW) was measured using an electronic balance with 0.01 g accuracy. The LWR was calculated using the expression: W= a Lb, where W is the BW and L is the TL. A total of 211 specimens ranging from 9.78-27.50 cm TL and 10.00 to 276.10 g BW were studied. BW of females was significantly higher than that of males (Mann-Whitney U-test, p>0.001). However the overall sex ratio did not differ significantly from the expected value of 1:1 (X"2 = 0.12, p > 3.00) in males, females and combined gender and there were significant differences in the intercepts but not in the slopes between the sexes of L. boga in the Ganges River. KF of females was significantly higher than that for males (p<0.001). In addition, the Wilcoxon signed rank test showed that the WR did not differ from 100 for males and females in this study indicating good condition of habitat for L. boga. The results of this study would be an effective tool for fishery specialists to initiate early management strategies and regulations for the sustainable management of the remaining stocks of this species within the Padma River and surrounding ecosystems. (author)

  20. Rapid development of microsatellite markers for the endangered fish Schizothorax biddulphi (Günther) using next generation sequencing and cross-species amplification.

    Science.gov (United States)

    Luo, Wei; Nie, Zhulan; Zhan, Fanbin; Wei, Jie; Wang, Weimin; Gao, Zexia

    2012-11-14

    Tarim schizothoracin (Schizothorax biddulphi) is an endemic fish species native to the Tarim River system of Xinjiang and has been classified as an extremely endangered freshwater fish species in China. Here, we used a next generation sequencing platform (ion torrent PGM™) to obtain a large number of microsatellites for S. biddulphi, for the first time. A total of 40577 contigs were assembled, which contained 1379 SSRs. In these SSRs, the number of dinucleotide repeats were the most frequent (77.08%) and AC repeats were the most frequently occurring microsatellite, followed by AG, AAT and AT. Fifty loci were randomly selected for primer development; of these, 38 loci were successfully amplified and 29 loci were polymorphic across panels of 30 individuals. The H(o) ranged from 0.15 to 0.83, and H(e) ranged from 0.15 to 0.85, with 3.5 alleles per locus on average. Cross-species utility indicated that 20 of these markers were successfully amplified in a related, also an endangered fish species, S. irregularis. This study suggests that PGM™ sequencing is a rapid and cost-effective tool for developing microsatellite markers for non-model species and the developed microsatellite markers in this study would be useful in Schizothorax genetic analysis.

  1. Studies on endangered and rare non-commercial fish species recorded in the Pomeranian Bay (southern Baltic Sea) in 2010-2013

    Science.gov (United States)

    Więcaszek, Beata; Sobecka, Ewa; Keszka, Sławomir; Stepanowska, Katarzyna; Dudko, Stanisław; Biernaczyk, Marcin; Wrzecionkowski, Konrad

    2015-12-01

    This paper presents the results of studies on endangered and rare non-commercial fish species ( Spinachia spinachia, Nerophis ophidion, Syngnathus typhle, Agonus cataphractus, Pholis gunnellus, Enchelyopus cimbrius, Cyclopterus lumpus) and one lamprey species ( Lampetra fluviatilis), recorded as bycatch during monitoring surveys in 2010-2013 in the Pomeranian Bay. Two species were observed for the first time in the Pomeranian Bay: A. cataphractus and E. cimbrius. Descriptions of parasite fauna are provided for C. lumpus and E. cimbrius, which were infected with four pathogenic species from Neomonada, Digenea, Nematoda, and Acanthocephala. Almost all parasite species were new in the hosts examined.

  2. 77 FR 26191 - Endangered and Threatened Wildlife and Plants; Reclassifying the Wood Bison Under the Endangered...

    Science.gov (United States)

    2012-05-03

    ...; Reclassifying the Wood Bison Under the Endangered Species Act as Threatened Throughout Its Range AGENCY: Fish... that the wood bison no longer meets the definition of endangered under the Endangered Species Act. This... Endangered Species Act, some threats to wood bison remain. Habitat loss has occurred in Canada from...

  3. 78 FR 8096 - Endangered and Threatened Wildlife and Plants; Listing as Endangered and Designation of Critical...

    Science.gov (United States)

    2013-02-05

    ...-0004; 4500030113] RIN 1018-AZ26 Endangered and Threatened Wildlife and Plants; Listing as Endangered and Designation of Critical Habitat for Six West Texas Aquatic Invertebrate Species AGENCY: Fish and..., 2012, proposed endangered status for six west Texas aquatic invertebrate species under the Endangered...

  4. Trophic relationships of small nonnative fishes in a natural creek and several agricultural drains flowing into the Salton Sea, and their potential, effects on the endangered desert pupfish

    Science.gov (United States)

    Martin, Barbara A.; Saiki, Michael K.

    2009-01-01

    This study was conducted to characterize trophic relationships of small nonnative fishes and to determine if predation by these fishes contributes to the decline of desert pupfish (Cyprinodon macularius), an endangered cyprinodont on the verge of extinction. We sampled 403 hybrid Mozambique tilapias (Oreochromis mossambica by O. urolepis), 107 redbelly tilapias (Tilapia zillii), 32 longjaw mudsuckers (Gillkhthys mirabilis), 182 western mosquitofish (Gambusia affinis), 222 sailfin mollies (Poecilia latipinna), 63 shortfin mollies (Poecilia mexicana), and 235 porthole livebearers (Poecilurpsis gracilis) from a natural creek and four agricultural drains during September 1999- December 2001. Evidence of piscivory was in gastrointestinal contents of 14 hybrid Mozambique tilapias, 3 redbelly tilapias, 10 longjaw mudsuckers, 8 western mosquitofish, 2 sailfin mollies, and 8 porthole livebearers. Although digestion often was too advanced for identification of fishes consumed by nonnative fishes, remains of desert pupfish were in gastrointestinal contents of a longjaw mudsucker. Our findings, along with Field evidence from other studies that inverse relationships exist between abundances of desert pupfish and nonnative species, are consistent with the hypothesis that predation by nonnative species is contributing to decline of desert pupfish. We suspect that competitive interactions with nonnative fishes might also adversely affect abundance of desert pupfish.

  5. Species distribution models of two critically endangered deep-sea octocorals reveal fishing impacts on vulnerable marine ecosystems in central Mediterranean Sea.

    Science.gov (United States)

    Lauria, V; Garofalo, G; Fiorentino, F; Massi, D; Milisenda, G; Piraino, S; Russo, T; Gristina, M

    2017-08-14

    Deep-sea coral assemblages are key components of marine ecosystems that generate habitats for fish and invertebrate communities and act as marine biodiversity hot spots. Because of their life history traits, deep-sea corals are highly vulnerable to human impacts such as fishing. They are an indicator of vulnerable marine ecosystems (VMEs), therefore their conservation is essential to preserve marine biodiversity. In the Mediterranean Sea deep-sea coral habitats are associated with commercially important crustaceans, consequently their abundance has dramatically declined due to the effects of trawling. Marine spatial planning is required to ensure that the conservation of these habitats is achieved. Species distribution models were used to investigate the distribution of two critically endangered octocorals (Funiculina quadrangularis and Isidella elongata) in the central Mediterranean as a function of environmental and fisheries variables. Results show that both species exhibit species-specific habitat preferences and spatial patterns in response to environmental variables, but the impact of trawling on their distribution differed. In particular F. quadrangularis can overlap with fishing activities, whereas I. elongata occurs exclusively where fishing is low or absent. This study represents the first attempt to identify key areas for the protection of soft and compact mud VMEs in the central Mediterranean Sea.

  6. Polymorphic microsatellite markers for the endangered fish, the slender shiner Pseudopungtungia tenuicorpa and cross-species amplification across five related species.

    Science.gov (United States)

    Kim, K S; Moon, S J; Han, S H; Kim, K Y; Bang, I C

    2016-09-02

    The slender shiner Pseudopungtungia tenuicorpa (Cypriniformes; Cyprinidae; Gobioninae) is an endangered freshwater fish species endemic to Korea. The current strategies for its conservation involve the study of population genetic characters and identification of management units. These strategies require suitable molecular markers to study genetic diversity and genetic structure. Here, we developed nine polymorphic microsatellite markers for P. tenuicorpa for the first time by applying an enrichment method from a size-selected genomic library. The developed microsatellite markers produced a total of 101 alleles (average 11.2). The observed and expected heterozygosities averaged 0.805 and 0.835, respectively. Among the nine identified markers, five markers showed successful amplification across five related Korean Gobioninae species. Thus, the microsatellite markers developed in this study will be useful to establish conservation strategies for both P. tenuicorpa and other related species.

  7. Colony geometry and structural complexity of the endangered species Acropora cervicornis partly explains the structure of their associated fish assemblage.

    Science.gov (United States)

    Agudo-Adriani, Esteban A; Cappelletto, Jose; Cavada-Blanco, Francoise; Croquer, Aldo

    2016-01-01

    In the past decade, significant efforts have been made to describe fish-habitat associations. However, most studies have oversimplified actual connections between fish assemblages and their habitats by using univariate correlations. The purpose of this study was to identify the features of habitat forming corals that facilitate and influences assemblages of associated species such as fishes. For this we developed three-dimensional models of colonies of Acropora cervicornis to estimate geometry (length and height), structural complexity (i.e., volume, density of branches, etc.) and biological features of the colonies (i.e., live coral tissue, algae). We then correlated these colony characteristics with the associated fish assemblage using multivariate analyses. We found that geometry and complexity were better predictors of the structure of fish community, compared to other variables such as percentage of live coral tissue or algae. Combined, the geometry of each colony explained 40% of the variability of the fish assemblage structure associated with this coral species; 61% of the abundance and 69% of fish richness, respectively. Our study shows that three-dimensional reconstructions of discrete colonies of Acropora cervicornis provides a useful description of the colonial structural complexity and may explain a great deal of the variance in the structure of the associated coral reef fish community. This demonstration of the strongly trait-dependent ecosystem role of this threatened species has important implications for restoration and conservation efforts.

  8. Colony geometry and structural complexity of the endangered species Acropora cervicornis partly explains the structure of their associated fish assemblage

    Directory of Open Access Journals (Sweden)

    Esteban A. Agudo-Adriani

    2016-04-01

    Full Text Available In the past decade, significant efforts have been made to describe fish-habitat associations. However, most studies have oversimplified actual connections between fish assemblages and their habitats by using univariate correlations. The purpose of this study was to identify the features of habitat forming corals that facilitate and influences assemblages of associated species such as fishes. For this we developed three-dimensional models of colonies of Acropora cervicornis to estimate geometry (length and height, structural complexity (i.e., volume, density of branches, etc. and biological features of the colonies (i.e., live coral tissue, algae. We then correlated these colony characteristics with the associated fish assemblage using multivariate analyses. We found that geometry and complexity were better predictors of the structure of fish community, compared to other variables such as percentage of live coral tissue or algae. Combined, the geometry of each colony explained 40% of the variability of the fish assemblage structure associated with this coral species; 61% of the abundance and 69% of fish richness, respectively. Our study shows that three-dimensional reconstructions of discrete colonies of Acropora cervicornis provides a useful description of the colonial structural complexity and may explain a great deal of the variance in the structure of the associated coral reef fish community. This demonstration of the strongly trait-dependent ecosystem role of this threatened species has important implications for restoration and conservation efforts.

  9. 76 FR 74070 - Endangered and Threatened Species; Permits

    Science.gov (United States)

    2011-11-30

    ... Endangered Species Act of 1973, as amended (16 U.S.C. 1531 et seq.). Dated: November 21, 2011. Lynn M. Lewis...-FF03E00000] Endangered and Threatened Species; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION... permits to conduct certain activities with endangered species under the authority of the Endangered...

  10. 32 CFR 643.32 - Policy-Endangered species.

    Science.gov (United States)

    2010-07-01

    ... ESTATE Policy § 643.32 Policy—Endangered species. The Endangered Species Act of 1973 (16 U.S.C. 1531 et seq.), declares the intention of Congress to conserve threatened and endangered species of fish... 32 National Defense 4 2010-07-01 2010-07-01 true Policy-Endangered species. 643.32 Section 643.32...

  11. 78 FR 9415 - Endangered and Threatened Species; Permits

    Science.gov (United States)

    2013-02-08

    ...). Authority: The authority for this notice is the Endangered Species Act of 1973, as amended (16 U.S.C. 1531...-FF03E00000] Endangered and Threatened Species; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION... permits to conduct certain activities with endangered species under the authority of the Endangered...

  12. 78 FR 57410 - Endangered Species; Issuance of Permits

    Science.gov (United States)

    2013-09-18

    ... permits to conduct certain activities with endangered species under the authority of the Endangered Species Act, as amended (Act). ADDRESSES: Endangered Species Program Manager, Ecological Services, U.S...-FF01E00000] Endangered Species; Issuance of Permits AGENCY: Fish and Wildlife Service, Interior. ACTION...

  13. 78 FR 14110 - Emergency Issuance of Endangered Species Permit

    Science.gov (United States)

    2013-03-04

    ... issued an endangered species permit to address emergency veterinary care for an injured green sea turtle...] Emergency Issuance of Endangered Species Permit AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered and threatened species under section 10(a)(1)(A) of the Endangered Species Act of 1973, as amended...

  14. 75 FR 53708 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2010-09-01

    ...] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also requires that we...

  15. 78 FR 57650 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2013-09-19

    ...-FF08E00000] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior... with endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also...

  16. 77 FR 12611 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2012-03-01

    ...-FF08E00000] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior... with endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also...

  17. 75 FR 69699 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2010-11-15

    ...] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also requires that we...

  18. 75 FR 79387 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2010-12-20

    ...] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also requires that we...

  19. 76 FR 14424 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2011-03-16

    ...] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also requires that we...

  20. 77 FR 5045 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2012-02-01

    ...-FF08E00000] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior... certain activities with endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity...

  1. 78 FR 16703 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2013-03-18

    ...-FF08E00000] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior... with endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also...

  2. 76 FR 70160 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2011-11-10

    ...] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also requires that we...

  3. 78 FR 55287 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2013-09-10

    ...-FF08E00000] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior... with endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also...

  4. 76 FR 20004 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2011-04-11

    ...] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also requires that we...

  5. 75 FR 20857 - Endangered Species Recovery Permit Applications

    Science.gov (United States)

    2010-04-21

    ...] Endangered Species Recovery Permit Applications AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... endangered species. With some exceptions, the Endangered Species Act (Act) prohibits activities with endangered and threatened species unless a Federal permit allows such activity. The Act also requires that we...

  6. 77 FR 34061 - Endangered Species; Issuance of Permits

    Science.gov (United States)

    2012-06-08

    ...-FF09A30000] Endangered Species; Issuance of Permits AGENCY: Fish and Wildlife Service, Interior. ACTION... following permits to conduct certain activities with endangered species. We issue these permits under the Endangered Species Act (ESA). ADDRESSES: Brenda Tapia, Division of Management Authority, U.S. Fish and...

  7. 78 FR 27255 - Endangered Species; Issuance of Permits

    Science.gov (United States)

    2013-05-09

    ...-FF09A30000] Endangered Species; Issuance of Permits AGENCY: Fish and Wildlife Service, Interior. ACTION... following permits to conduct certain activities with endangered species. We issue these permits under the Endangered Species Act (ESA). ADDRESSES: Brenda Tapia, Division of Management Authority, U.S. Fish and...

  8. 78 FR 56922 - Endangered Species; Issuance of Permits

    Science.gov (United States)

    2013-09-16

    ...-FF09A30000] Endangered Species; Issuance of Permits AGENCY: Fish and Wildlife Service, Interior. ACTION... following permits to conduct certain activities with endangered species. We issue these permits under the Endangered Species Act (ESA). ADDRESSES: Brenda Tapia, Division of Management Authority, U.S. Fish and...

  9. Endangered Species

    Science.gov (United States)

    EPA's Endangered Species Protection Program helps promote recovery of listed species. The ESPP determines if pesticide use in a geographic area may affect any listed species. Find needed limits on pesticide use in Endangered Species Protection Bulletins.

  10. DNA barcoding approaches for fishing authentication of exploited grouper species including the endangered and legally protected goliath grouper Epinephelus itajara

    Directory of Open Access Journals (Sweden)

    Rodrigo A. Torres

    2013-09-01

    Full Text Available Fishing strategies are constantly changing to meet the needs for new or alternative food sources. Consequently, management of fishing activities regarding rates of exploitation is essential, as a number of resources have reached situations of overexploitation. The aim of the present study was to use DNA barcoding from the goliath grouper and other exploited epinephelids in order to provide procedures for DNA authentication to be used as evidence for combating putative illegal fishing. The species studied were Epinephelus adscensionis, Mycteroperca bonaci, Mycteroperca interstitialis, Epinephelus itajara, Mycteroperca venenosa, Epinephelus mystacinus, Dermatolepis inermis, Alphestes afer, Cephalopholis fulva, Mycteroperca acutirostris, Rypticus saponaceus, Mycteroperca marginata and Epinephelus morio. Four of these species are the main epinephelids fished in the Atlantic Ocean. Differential patterns of polymerase chain reaction–restriction fragment length polymorphism were obtained from the species and additional single nucleotide polymorphisms were also detected among the four main epinephelids studied. The procedures proved very efficient and we suggest their applicability to the other fish groups as a way to control illegal capture and retail around the world, especially in cases in which filleting and other forms of de-characterization cause a lack of morpho-anatomical key characters.

  11. Metapopulations in temporary streams - the role of drought-flood cycles in promoting high genetic diversity in a critically endangered freshwater fish and its consequences for the future.

    Science.gov (United States)

    Sousa-Santos, Carla; Robalo, Joana I; Francisco, Sara M; Carrapato, Carlos; Cardoso, Ana Cristina; Doadrio, Ignacio

    2014-11-01

    Genetic factors have direct and indirect impacts in the viability of endangered species. Assessing their genetic diversity levels and population structure is thus fundamental for conservation and management. In this paper we use mitochondrial and nuclear markers to address phylogeographic and demographic data on the critically endangered Anaecypris hispanica, using a broad sampling set which covered its known distribution area in the Iberian Peninsula. Our results showed that the populations of A. hispanica are strongly differentiated (high and significant ФST and FST values, corroborated by the results from AMOVA and SAMOVA) and genetically diversified. We suggest that the restricted gene flow between populations may have been potentiated by ecological, hydrological and anthropogenic causes. Bayesian skyline plots revealed a signal for expansion for all populations (tMRCA between 68kya and 1.33Mya) and a genetic diversity latitudinal gradient was detected between the populations from the Upper (more diversified) and the Lower (less diversified) Guadiana river basin. We postulate a Pleistocenic westwards colonization route for A. hispanica in the Guadiana river basin, which is in agreement with the tempo and mode of paleoevolution of this drainage. The colonization of River Guadalquivir around 60kya with migrants from the Upper Guadiana, most likely by stream capture, is also suggested. This study highlights the view that critically endangered species facing range retreats (about 47% of its known populations have disappeared in the last 15years) are not necessarily small and genetically depleted. However, the extinction risk is not negligible since A. hispanica faces the combined effect of several deterministic and stochastic negative factors and, moreover, recolonization events after localized extinctions are very unlikely to occur due to the strong isolation of populations and to the patchily ecologically-conditioned distribution of fish. The inferred species

  12. Assessments at multiple levels of biological organization allow for an integrative determination of physiological tolerances to turbidity in an endangered fish species.

    Science.gov (United States)

    Hasenbein, Matthias; Fangue, Nann A; Geist, Juergen; Komoroske, Lisa M; Truong, Jennifer; McPherson, Rina; Connon, Richard E

    2016-01-01

    Turbidity can influence trophic levels by altering species composition and can potentially affect fish feeding strategies and predator-prey interactions. The estuarine turbidity maximum, described as an area of increased suspended particles, phytoplankton and zooplankton, generally represents a zone with higher turbidity and enhanced food sources important for successful feeding and growth in many fish species. The delta smelt (Hypomesus transpacificus) is an endangered, pelagic fish species endemic to the San Francisco Estuary and Sacramento-San Joaquin River Delta, USA, where it is associated with turbid waters. Turbidity is known to play an important role for the completion of the species' life cycle; however, turbidity ranges in the Delta are broad, and specific requirements for this fish species are still unknown. To evaluate turbidity requirements for early life stages, late-larval delta smelt were maintained at environmentally relevant turbidity levels ranging from 5 to 250 nephelometric turbidity units (NTU) for 24 h, after which a combination of physiological endpoints (molecular biomarkers and cortisol), behavioural indices (feeding) and whole-organism measures (survival) were determined. All endpoints delivered consistent results and identified turbidities between 25 and 80 NTU as preferential. Delta smelt survival rates were highest between 12 and 80 NTU and feeding rates were highest between 25 and 80 NTU. Cortisol levels indicated minimal stress between 35 and 80 NTU and were elevated at low turbidities (5, 12 and 25 NTU). Expression of stress-related genes indicated significant responses for gst, hsp70 and glut2 in high turbidities (250 NTU), and principal component analysis on all measured genes revealed a clustering of 25, 35, 50 and 80 NTU separating the medium-turbidity treatments from low- and high-turbidity treatments. Taken together, these data demonstrate that turbidity levels that are either too low or too high affect delta

  13. Relação preliminar das espécies de peixes (Pisces, Elasmobranchii, Actinopterygii ameaçadas no Brasil Preliminary list of endangered fish species (Pisces, Elasmobranchii , Actinopterygii in Brazil

    Directory of Open Access Journals (Sweden)

    Ricardo S Rosa

    1996-01-01

    Full Text Available The Brazilian fish fauna is still poorly known with respect to its diversity and conservation status, particularly of freshwater species. Human activities and population growth are rapidly impacting this fauna to an unchecked extent, so that many fish species are presently threatened. Also, some areas have been so critically altered that their fish fauna can no longer be properly inventoried. There is an urgent need to evaluate the conservation status of Brazilian fish species, since none are presently listed as endangered by federal legislation. Based on a literature search and a survey directed to the Neotropical ichthyologists, we present an unofficial list including a total of 78 threatened fish species (12 elasmobranchs and 66 actinopterygians. Of these, sixteen actinopterygian species are listed as endangered, three elasmobranchs and nine actinopterygians as vulnerable, and seven actinopterygians as rare; 40 species either have indeterminate status or are data deficient to yield an adequate assessment, and three species are listed as extinct or possibly extinct.

  14. Landscape-scale Habitat Templates and Life Histories of Endangered and Invasive Fish Species in Large Rivers of the Mid-Continent USA (Invited)

    Science.gov (United States)

    Jacobson, R. B.; Braaten, P. J.; Chapman, D.; DeLonay, A. J.

    2013-12-01

    Many fish species migrate through river systems to complete their life cycles, occupying specific habitats during specific life stages. Regional geomorphology sets a template for their habitat-use patterns and ontogenetic development. In large rivers of the Mid-continent USA, understanding of relations of fish life histories to landscape-scale habitat templates informs recovery of endangered species and prevention of spread of invasive species. The endangered pallid sturgeon has evolved in the Missouri-Mississippi river system over 150 Ma. Its present-day distribution probably results from extensive drainage re-arrangements during the Pleistocene, followed by contemporary fragmentation. The reproductive and early life-stage needs of pallid sturgeon encompass hundreds of km, as adults migrate upstream to spawn and free embryos and larvae disperse downstream. Spawning requires coarse, hard substrate for incubation of adhesive eggs but adult pallid sturgeon are found predominately over sand, indicating that coarse substrate is a critical but transient habitat need. Once hatched, free-embryos initiate 9-17 days of downstream dispersal that distributes them over several hundreds of km. Lotic conditions at the dispersal terminus are required for survival. Persistent recruitment failure has been attributed to dams and channelization, which have fragmented migration and dispersal corridors, altered flow regimes, and diminished rearing habitats. Key elements of the natural history of this species remain poorly understood because adults are rare and difficult to observe, while the earliest life stages are nearly undetectable. Recent understanding has been accelerated using telemetry and hydroacoustics, but such assessments occur in altered systems and may not be indicative of natural behaviors. Restoration activities attempt - within considerable uncertainty -- to restore elements of the habitat template where they are needed. In comparison, invasive Asian carps have been

  15. Inseminating dose and water volume applied to the artificial fertilization of Steindachneridion parahybae (Steindachner, 1877 (Siluriformes: Pimelodidae: Brazilian endangered fish

    Directory of Open Access Journals (Sweden)

    Eduardo Antônio Sanches

    Full Text Available Abstract The Steindachneridion parahybae is an endangered catfish from Brazil and strategies applied for gametes optimization are necessary. The aim of this study was to assess inseminating doses and water volume upon the fertilization, hatching rates and percentage of normal larvae in S. parahybae . Was used a randomized design in factorial scheme (4×4 with four inseminating doses: 1.0×104, 1.0×105, 1.0×106, 1.0×107spermatozoa oocyte-1 and four volumes of water: 1, 35, 65 and 95mL of water g-1 of oocytes. The combination of doses and volumes were performed in triplicates (n=48. Each incubator (1.5L of useful volume with 1g of oocytes was considered as an experimental unit. Significant interaction between inseminating doses and volumes of water to the values of the fertilization rates and quadratic effect of doses and volume for the values of hatching rates were observed. The doses and volumes did not influence the percentage of normal larvae (87.70±5.06%. It is recommended the use of 5.5×106 spermatozoa oocyte-1 and 1mL of water g-1 of oocytes during in vitro fertilization procedure. These results allowed us to develop new biotechnological strategies applied to the conservation of S. parahybae .

  16. A fully-stochasticized, age-structured population model for population viability analysis of fish: Lower Missouri River endangered pallid sturgeon example

    Science.gov (United States)

    Wildhaber, Mark L.; Albers, Janice; Green, Nicholas; Moran, Edward H.

    2017-01-01

    We develop a fully-stochasticized, age-structured population model suitable for population viability analysis (PVA) of fish and demonstrate its use with the endangered pallid sturgeon (Scaphirhynchus albus) of the Lower Missouri River as an example. The model incorporates three levels of variance: parameter variance (uncertainty about the value of a parameter itself) applied at the iteration level, temporal variance (uncertainty caused by random environmental fluctuations over time) applied at the time-step level, and implicit individual variance (uncertainty caused by differences between individuals) applied within the time-step level. We found that population dynamics were most sensitive to survival rates, particularly age-2+ survival, and to fecundity-at-length. The inclusion of variance (unpartitioned or partitioned), stocking, or both generally decreased the influence of individual parameters on population growth rate. The partitioning of variance into parameter and temporal components had a strong influence on the importance of individual parameters, uncertainty of model predictions, and quasiextinction risk (i.e., pallid sturgeon population size falling below 50 age-1+ individuals). Our findings show that appropriately applying variance in PVA is important when evaluating the relative importance of parameters, and reinforce the need for better and more precise estimates of crucial life-history parameters for pallid sturgeon.

  17. Endangered Species Day | Endangered Species Coalition

    Science.gov (United States)

    Annual Top 10 Report Protecting the Endangered Species Act Wildlife Voices Stand for Wolves Endangered Campaigns Wildlife Voices Protecting the Endangered Species Act Annual Top 10 Report Endangered Species Day Stand for Wolves Vanishing BOOK: A Wild Success The Endangered Species Act at 40 Endangered Species The

  18. Endangered Languages.

    Science.gov (United States)

    Hale, Ken; And Others

    1992-01-01

    Endangered languages, or languages on the verge of becoming extinct, are discussed in relation to the larger process of loss of cultural and intellectual diversity. This article summarizes essays presented at the 1991 Linguistic Society of America symposium, "Endangered Languages and Their Preservation." (11 references) (LB)

  19. 75 FR 11193 - Endangered Wildlife and Plants; Permits

    Science.gov (United States)

    2010-03-10

    ...] Endangered Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of... employees and their designated agents to conduct enhancement of survival activities for a plant that was recently added to the List of Endangered and Threatened Plants (Phyllostegia hispida). The Endangered...

  20. 40 CFR 257.3-2 - Endangered species.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Endangered species. 257.3-2 Section... Disposal Facilities and Practices § 257.3-2 Endangered species. (a) Facilities or practices shall not cause or contribute to the taking of any endangered or threatened species of plants, fish, or wildlife. (b...

  1. 78 FR 36237 - Proposed Information Collection; Federal Fish and Wildlife Permit Applications and Reports-Native...

    Science.gov (United States)

    2013-06-17

    ...--Native Endangered and Threatened Species AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice... requested in accordance with various Federal wildlife conservation laws, including: Endangered Species Act.... [[Page 36238

  2. 78 FR 65936 - Endangered and Threatened Wildlife and Plants; Proposed Endangered Status for Gunnison Sage...

    Science.gov (United States)

    2013-11-04

    ... and Plants; Proposed Endangered Status for Gunnison Sage-Grouse and Proposed Designation of Critical Habitat for Gunnison Sage-Grouse AGENCY: Fish and Wildlife Service, Interior. ACTION: Proposed rule... rules to list the Gunnison sage-grouse (Centrocercus minimus) as endangered and to designate critical...

  3. South African red data book - fishes

    CSIR Research Space (South Africa)

    Skelton, PH

    1977-07-01

    Full Text Available Data sheets are provided for 28 threatened South African fish species, of which five are considered to be endangered (Barbus trevelyani, Klegethon, Treurensis, Oveodaimon quathlambae and Clarias cavernicola), one to be endangered in South Africa...

  4. Endangered species act : the U.S. Fish and Wildlife service has incomplete information about effects on listed species from section 7 consultations.

    Science.gov (United States)

    2009-05-01

    The western United States, including vast stretches of federal land, is home to more than a third of the 1,317 species listed under the Endangered Species Act. Under section 7 of the act, federal agencies must ensure that any actions they authorize, ...

  5. 76 FR 67401 - Endangered and Threatened Wildlife and Plants; 90-Day Finding on a Petition To List All...

    Science.gov (United States)

    2011-11-01

    ... To List All Chimpanzees (Pan troglodytes) as Endangered AGENCY: Fish and Wildlife Service, Interior... chimpanzees (Pan troglodytes) as endangered under the Endangered Species Act of 1973, as amended. We are now... details. FOR FURTHER INFORMATION CONTACT: Janine Van Norman, Chief, Branch of Foreign Species, Endangered...

  6. Predicting the impact of a northern pike (Esox lucius) invasion on endangered June sucker (Chasmistes liorus) and sport fishes in Utah Lake, UT

    OpenAIRE

    Reynolds, Jamie

    2017-01-01

    Invasive species introductions are associated with negative economic and environmental impacts, including reductions in native species populations. Successful invasive species populations often grow rapidly and a new food web equilibrium is established. Invasive, predatory northern pike (Esox lucius; hereafter pike) were detected in 2010 in Utah Lake, UT, a highly-degraded ecosystem home to the endemic, endangered June sucker (Chasmistes liorus). Here we test whether pike predation could hind...

  7. Changes in reproductive biomarkers in an endangered fish species (bonytail chub, Gila elegans) exposed to low levels of organic wastewater compounds in a controlled experiment.

    Science.gov (United States)

    Walker, David B; Paretti, Nicholas V; Cordy, Gail; Gross, Timothy S; Zaugg, Steven D; Furlong, Edward T; Kolpin, Dana W; Matter, William J; Gwinn, Jessica; McIntosh, Dennis

    2009-11-08

    In arid regions of the southwestern United States, municipal wastewater treatment plants commonly discharge treated effluent directly into streams that would otherwise be dry most of the year. A better understanding is needed of how effluent-dependent waters (EDWs) differ from more natural aquatic ecosystems and the ecological effect of low levels of environmentally persistent organic wastewater compounds (OWCs) with distance from the pollutant source. In a controlled experiment, we found 26 compounds common to municipal effluent in treatment raceways all at concentrations fish. Female bonytail chub in treatment tanks had significantly lower concentrations of 17beta-estradiol than control females (p=0.001). The normally inverse relationship between primary male and female sex hormones, expected in un-impaired fish, was greatly decreased in treatment (r=0.00) versus control (r=-0.66) female fish. We found a similar, but not as significant, trend between treatment (r=-0.45) and control (r=-0.82) male fish. Measures of fish condition showed no significant differences between male or female fish housed in effluent or clean water. Inter-sex condition did not occur and testicular and ovarian cells appeared normal for the respective developmental stage and we observed no morphological alteration in fish. The population-level impacts of these findings are uncertain. Studies examining the long-term, generational and behavioral effects to aquatic organisms chronically exposed to low levels of OWC mixtures are needed.

  8. Endangered Metaphors

    CERN Document Server

    Idström, Anna; Falzett, Tiber FM

    2012-01-01

    When the last speaker of a language dies, s/he takes to oblivion the memories, associations and the rich imagery this language community has once lived by. The cultural heritage encoded in conventional linguistic metaphors, handed down through generations, will be lost forever. This volume consists of fifteen articles about metaphors in endangered languages, from Peru to Alaska, from India to Ghana.The empirical data demonstrate that the assumptions of contemporary cognitive linguistic theory about "universal" metaphors and the underlying cognitive processes are still far from plausible, since

  9. 75 FR 20621 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2010-04-20

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R3-ES-2009-N0054]; [30120-1113-0000-F6] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of availability of permit applications; request for comments. SUMMARY: We, the U.S. Fish and...

  10. 50 CFR 22.28 - Permits for bald eagle take exempted under the Endangered Species Act.

    Science.gov (United States)

    2010-10-01

    ... the Endangered Species Act. 22.28 Section 22.28 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE... for bald eagle take exempted under the Endangered Species Act. (a) Purpose and scope. This permit... section 7 incidental take statement under the Endangered Species Act of 1973, as amended (ESA) (16 U.S.C...

  11. Modeling for Endangered-Species Recovery: Gray Wolves in the Western Great Lakes Region

    Science.gov (United States)

    Jean Fitts Cochrane; Robert G. Haight; Anthony M. Starfield

    2003-01-01

    The Federal Endangered Species Act is intended to conserve endangered and threatened species and their habitats and to improve the species' status so that they no longer need protection under the Act. In the process of planning the recovery of threatened or endangered species, the U.S. Fish and Wildlife Service increasingly uses demographic models to predict...

  12. Cooperation and the Endangered Species Act

    International Nuclear Information System (INIS)

    Palmer, S.C.

    1991-01-01

    Passage of the Endangered Species Act in 1973 set the stage for some of the nations most polemic environmental battles. One of these is in the Colorado River Basin which is home to four native and rare fish species. Acrimonious confrontation has characterized the consultations under the ESA regarding these fish species. In 1983, the U.S. Fish and Wildlife Service announced that no new water depletions such as for hydropower plants, from the Upper Colorado River Basin would be allowed. This created no small stir among basin states and water developers and a negotiated solution was sought. The result was the Recovery Implementation Program for Endangered Fish Species in the Upper Colorado River Basin. This paper reports that models of political negotiation indicate conceptually, that the Recovery Program with its decisions made by unanimity of consensus, its open process and sharing of information, its shared budget and users fees, is a vehicle of political compromise and cooperation

  13. Bioeconomic analysis supports the endangered species act.

    Science.gov (United States)

    Salau, Kehinde R; Fenichel, Eli P

    2015-10-01

    The United States Endangered Species Act (ESA) was enacted to protect and restore declining fish, wildlife, and plant populations. The ESA mandates endangered species protection irrespective of costs. This translates to the restriction of activities that harm endangered populations. We discuss criticisms of the ESA in the context of public land management and examine under what circumstance banning non-conservation activity on multiple use federal lands can be socially optimal. We develop a bioeconomic model to frame the species management problem under the ESA and identify scenarios where ESA-imposed regulations emerge as optimal strategies. Results suggest that banning harmful activities is a preferred strategy when valued endangered species are in decline or exposed to poor habitat quality. However, it is not optimal to sustain such a strategy in perpetuity. An optimal plan involves a switch to land-use practices characteristic of habitat conservation plans.

  14. ENDANGERED SPECIES SENSITIVITY AND ECOLOGICAL RISK ASSESSMENT

    Science.gov (United States)

    he U.S. Environmental Protection Agency (EPA), U.S. Fish & Wildlife Service, and National Marine Fisheries Service share a common responsibility for the protection of our nation's aquatic species under the Endangered Species Act (ESA) of 1973. The EPA, under the Federal Insectici...

  15. Endangered Species Act and energy facility planning: compliance and conflict

    Energy Technology Data Exchange (ETDEWEB)

    Shreeve, D; Calef, C; Nagy, J

    1978-05-01

    New energy facilities such as coal mines, gasification plants, refineries, and power plants--because of their severe environmental impacts--may, if sited haphazardly, jeopardize endangered species. By law, conflicts between energy-facility siting and endangered species occurrence must be minimized. To assess the likelihood of such conflicts arising, the authors used data from the Fish and Wildlife Service, Endangered Species Office, that describe the species' ranges by county. This data set was matched with county-level occurrences of imminent energy developments to find counties of overlap and hence potential conflict. An index was developed to measure the likelihood of actual conflict occurring in such counties. Factors determining the index are: numbers of endangered species inhabiting the county, number of energy-related developments, and to what degree the county remains in a wild or undeveloped state. Maps were prepared showing (1) geographic ranges of endangered species by taxonomic groups (mammals, fish, etc.) and (2) counties of conflict.

  16. Endangered Species Protection Bulletins

    Science.gov (United States)

    Endangered Species Protection Bulletins set forth geographically specific pesticide use limitations for the protection of threatened and endangered (listed) species and their designated critical habitat. Find out how to get and use Bulletins.

  17. Endangered Animals. Second Grade.

    Science.gov (United States)

    Popp, Marcia

    This second grade teaching unit centers on endangered animal species around the world. Questions addressed are: What is an endangered species? Why do animals become extinct? How do I feel about the problem? and What can I do? Students study the definition of endangered species and investigate whether it is a natural process. They explore topics…

  18. Protecting the endangered lake salmon

    International Nuclear Information System (INIS)

    Soimakallio, H.; Oesch, P.

    1997-01-01

    In addition to the Ringed Seal, the labyrinthine Saimaa lake system created after the Ice Age also trapped a species of salmon, whose entire life cycle became adapted to fresh water. In order to improve the living conditions of this lake salmon which - like the ringed seal - is today classified as an endangered species, an intensive research programme has been launched. The partners include the Finnish Game and Fisheries Research Institute, fishing and environmental authorities and - in collaboration with UPM-Kymmene Oy and Kuurnan Voima Oy - the IVO subsidiary Pamilo Oy

  19. Protecting the endangered lake salmon

    Energy Technology Data Exchange (ETDEWEB)

    Soimakallio, H.; Oesch, P. [ed.

    1997-11-01

    In addition to the Ringed Seal, the labyrinthine Saimaa lake system created after the Ice Age also trapped a species of salmon, whose entire life cycle became adapted to fresh water. In order to improve the living conditions of this lake salmon which - like the ringed seal - is today classified as an endangered species, an intensive research programme has been launched. The partners include the Finnish Game and Fisheries Research Institute, fishing and environmental authorities and - in collaboration with UPM-Kymmene Oy and Kuurnan Voima Oy - the IVO subsidiary Pamilo Oy

  20. 75 FR 45650 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2010-08-03

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2010-N149; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of an application to...

  1. 76 FR 8374 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2011-02-14

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2011-N021; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of applications to...

  2. 75 FR 28278 - Endangered Wildlife and Plants; Permits

    Science.gov (United States)

    2010-05-20

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R1-ES-2010-N092; 10120-1113-0000-F5] Endangered Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of availability of permit applications; request for comments. SUMMARY: In accordance with the requirements of the...

  3. 76 FR 33334 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2011-06-08

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2011-N112; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of applications to...

  4. 75 FR 52012 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2010-08-24

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2010-N181; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of applications to...

  5. 75 FR 5101 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2010-02-01

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2010-N010; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of applications to...

  6. 76 FR 18576 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2011-04-04

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2011-N056; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of applications to...

  7. 76 FR 10063 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2011-02-23

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2011-N026; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of applications to...

  8. 75 FR 27361 - Endangered and Threatened Wildlife and Plants; Permits

    Science.gov (United States)

    2010-05-14

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2010-N095; 60120-1113-0000-D2] Endangered and Threatened Wildlife and Plants; Permits AGENCY: Fish and Wildlife Service, Interior. ACTION: Notice of receipt of applications for permits. SUMMARY: We announce our receipt of applications to...

  9. 76 FR 19304 - Endangered and Threatened Wildlife and Plants; Endangered Status for Dunes Sagebrush Lizard

    Science.gov (United States)

    2011-04-07

    ... for Dunes Sagebrush Lizard AGENCY: Fish and Wildlife Service, Interior. ACTION: Proposed rule... list the dunes sagebrush lizard (Sceloporus arenicolus) under the Endangered Species Act of 1973, as... dunes sagebrush lizard (Sceloporus arenicolus) that was published in the Federal Register on December 14...

  10. Endangered Species and Irrigated Agriculture, Water Resource Competition in Western River Systems

    OpenAIRE

    United States Department of Agriculture, Economic Research Service

    1995-01-01

    This report characterizes several aspects of water allocation tradeoffs between fish species listed under the Federal Endangered Species Act and agriculture in the American West. The geographic intersection between endangered/threatened (E/T) fish and agricultural production reliant on surface water for irrigation is identified. Three findings are: (1) 235 counties, representing 22 percent of the West's counties, contain irrigated production that relies on water from rivers with E/T fish, ...

  11. ESUSA: US endangered species distribution file

    Energy Technology Data Exchange (ETDEWEB)

    Nagy, J.; Calef, C.E.

    1979-10-01

    This report describes a file containing distribution data on endangered species of the United States of Federal concern pursuant to the Endangered Species Act of 1973. Included for each species are (a) the common name, (b) the scientific name, (c) the family, (d) the group (mammal, bird, etc.), (e) Fish and Wildlife Service (FWS) listing and recovery priorities, (f) the Federal legal status, (g) the geographic distribution by counties or islands, (h) Federal Register citations and (i) the sources of the information on distribution of the species. Status types are endangered, threatened, proposed, formally under review, candidate, deleted, and rejected. Distribution is by Federal Information Processing Standard (FIPS) county code and is of four types: designated critical habitat, present range, potential range, and historic range.

  12. Conservation status and distribution of freshwater fishes in South ...

    African Journals Online (AJOL)

    Indigenous fishes include 43 species of the Zambezian faunal group (70% of the ... andrewi, Pseudobarbus afer) all of which are classified as Endangered. ... support only half of the freshwater fish species occurring in all national parks.

  13. Fish and hydroelectricity

    International Nuclear Information System (INIS)

    Zorpette, G.

    1990-01-01

    This paper reports on the problems that hydroelectric plants have regarding fish populations. The utilities that operate these plants are finding that accommodating migrating fish presents unique engineering challenges, not the least of which involves designing and building systems to protect fish species whose migratory behavior remains something of a mystery. Where such systems cannot be built, the status of hydroelectric dams may be in doubt, as is now the case with several dams in the United States. A further twist in some regions in the possibility that certain migratory fish will be declared threatened or endangered-a development that could wreak havoc on the hydroelectric energy supply in those regions

  14. 78 FR 14022 - Endangered and Threatened Wildlife and Plants; Reinstatement of Removal of the Virginia Northern...

    Science.gov (United States)

    2013-03-04

    ... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service 50 CFR Part 17 [Docket No. FWS-R5-ES-2013...; Reinstatement of Removal of the Virginia Northern Flying Squirrel From the List of Endangered and Threatened Wildlife AGENCY: Fish and Wildlife Service, Interior. ACTION: Final rule. SUMMARY: We, the U.S. Fish and...

  15. Conservation status of imperiled North American freshwater and diadromous fishes

    Science.gov (United States)

    Howard L. Jelks; Stephen J. Walsh; Noel M. Burkhead; Salvador Contreras-Balderas; Edmundo Diaz-Pardo; Dean A. Hendrickson; John Lyons; Nicholas E. Mandrak; Frank McCormick; Joseph S. Nelson; Steven P. Plantania; Brady A. Porter; Claude B. Renaud; Juan Jacobo Schmitter-Soto; Eric B. Taylor; Melvin L. Jr. Warren

    2008-01-01

    This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society?s Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133...

  16. 50 CFR 223.203 - Anadromous fish.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Anadromous fish. 223.203 Section 223.203... Threatened Marine and Anadromous Species § 223.203 Anadromous fish. Available guidance documents cited in the...)(1) of the ESA (16 U.S.C. 1538(a)(1)) relating to endangered species apply to fish with an intact...

  17. Rare & Endangered Species: Understanding Our Disappearing Plants and Animals. Activities Guide.

    Science.gov (United States)

    American Gas Association, Arlington, VA. Educational Services.

    About 464 plants and animals found in the United States and its territories are listed by the U.S. Fish and Wildlife Service as threatened or endangered. Another 3900 are candidates for protection. The activities in this guide are designed to help teachers and students understand the issue of endangered species. It includes ideas for several…

  18. 78 FR 47722 - Endangered and Threatened Wildlife and Plants; Recovery Plan for Alabama Sturgeon

    Science.gov (United States)

    2013-08-06

    ... rarest species of fish in the nation and may be close to extinction. Restoring an endangered or threatened animal or plant to the point where it is again a secure, self-sustaining member of its ecosystem...

  19. Endangered Species: Pesticide Restrictions

    Science.gov (United States)

    Our goal is to protect threatened and endangered species and their habitats, without placing unnecessary burden on agriculture and pesticide users. Pesticide limitations are developed to ensure safe use of pesticides in order to meet this goal.

  20. Eutropiichthys vacha (Hamilton, 1822), a threatened fish of Indian subcontinent

    OpenAIRE

    Sandipan Gupta; Samir Banerjee

    2016-01-01

    Eutropiichthys vacha (Batchwa vacha) is a freshwater catfish species having high economic value. It is a very popular table fish among the consumers due to high nutritional value and taste. Just recently small specimens of this species have also made their entry in ornamental fish markets. Recently due to number of reasons, populations of this fish species are facing the threat of extinction. It has already been documented as Endangered in India and Critically Endangered in Bangladesh. The pr...

  1. Endangered Species Act Critical Habitat

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Critical habitat (CH) is designated for the survival and recovery of species listed as threatened or endangered under the Endangered Species Act (ESA). Critical...

  2. 75 FR 78974 - Endangered Species

    Science.gov (United States)

    2010-12-17

    ...-XA086 Endangered Species AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and... the Endangered Species Act of 1973, as amended (16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR 222-226). Permit...

  3. 76 FR 2348 - Endangered Species

    Science.gov (United States)

    2011-01-13

    .... 15596] Endangered Species AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and... requested permit has been issued under the authority of the Endangered Species Act of 1973, as amended (ESA... endangered and threatened species (50 CFR parts 222-226). The North Carolina Aquarium at Fort Fisher has been...

  4. 76 FR 74778 - Endangered Species

    Science.gov (United States)

    2011-12-01

    .... 16439] Endangered Species AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and... has been issued under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and...

  5. 75 FR 28636 - Endangered and Threatened Wildlife and Plants; Initiation of 5-Year Reviews of 34 Species in...

    Science.gov (United States)

    2010-05-21

    ... listed Final listing rule ANIMALS Buena Vista Lake ornate shrew... Sorex ornatus Endangered........ U.S.A.... La Graciosa thistle Cirsium Endangered........ U.S.A. (CA)....... 65 FR 14888, 3/20/ loncholepis... Fish and Wildlife Office at (760) 431-9440. For the Buena Vista Lake ornate shrew, California clapper...

  6. 76 FR 30958 - Endangered and Threatened Wildlife and Plants; Permit Applications

    Science.gov (United States)

    2011-05-27

    ...] Endangered and Threatened Wildlife and Plants; Permit Applications AGENCY: Fish and Wildlife Service... Regional Director, Attn: Lisa Mandell, U.S. Fish and Wildlife Service, Ecological Services, 5600 American... Butterfly (Lycaeides melissa samuelis) adults, eggs and larvae to test interactions with wild lupine of...

  7. 77 FR 29357 - Endangered and Threatened Wildlife and Plants; Permit Applications

    Science.gov (United States)

    2012-05-17

    ...-FF03E00000] Endangered and Threatened Wildlife and Plants; Permit Applications AGENCY: Fish and Wildlife... U.S. mail to the Regional Director, Attn: Lisa Mandell, U.S. Fish and Wildlife Service, Ecological... speeds and operating protocols. The study is proposed to further understand bat interactions with...

  8. Scoping endangered futures

    DEFF Research Database (Denmark)

    Blok, Anders

    2017-01-01

    , in the imaginative politics of climatic projections. To rethink the resultant political aesthetics of climate change, the article maps out the visual, experiential, and affective forms in which endangered climatic futures come to saturate public culture. Such encounters, the article suggests, constitute inter-media...

  9. 78 FR 48943 - Endangered and Threatened Wildlife and Plants; Endangered Species Act Listing Determination for...

    Science.gov (United States)

    2013-08-12

    ... Atmospheric Administration Endangered and Threatened Wildlife and Plants; Endangered Species Act Listing...; Endangered Species Act Listing Determination for Alewife and Blueback Herring AGENCY: National Marine... (Alosa aestivalis) as threatened under the Endangered Species Act (ESA) throughout all or a significant...

  10. Population viability analysis for endangered Roanoke logperch

    Science.gov (United States)

    Roberts, James H.; Angermeier, Paul; Anderson, Gregory B.

    2016-01-01

    A common strategy for recovering endangered species is ensuring that populations exceed the minimum viable population size (MVP), a demographic benchmark that theoretically ensures low long-term extinction risk. One method of establishing MVP is population viability analysis, a modeling technique that simulates population trajectories and forecasts extinction risk based on a series of biological, environmental, and management assumptions. Such models also help identify key uncertainties that have a large influence on extinction risk. We used stochastic count-based simulation models to explore extinction risk, MVP, and the possible benefits of alternative management strategies in populations of Roanoke logperch Percina rex, an endangered stream fish. Estimates of extinction risk were sensitive to the assumed population growth rate and model type, carrying capacity, and catastrophe regime (frequency and severity of anthropogenic fish kills), whereas demographic augmentation did little to reduce extinction risk. Under density-dependent growth, the estimated MVP for Roanoke logperch ranged from 200 to 4200 individuals, depending on the assumed severity of catastrophes. Thus, depending on the MVP threshold, anywhere from two to all five of the logperch populations we assessed were projected to be viable. Despite this uncertainty, these results help identify populations with the greatest relative extinction risk, as well as management strategies that might reduce this risk the most, such as increasing carrying capacity and reducing fish kills. Better estimates of population growth parameters and catastrophe regimes would facilitate the refinement of MVP and extinction-risk estimates, and they should be a high priority for future research on Roanoke logperch and other imperiled stream-fish species.

  11. Status of Federally Listed Threatened and Endangered Species at Los Alamos National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Hathcock, Charles Dean [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Thompson, Brent E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Berryhill, Jesse Tobias [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Keller, David Charles [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Wright, Marjorie Alys [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-12-04

    Compliance with the Endangered Species Act at LANL is achieved through the implementation of the LANL Threatened and Endangered Species Habitat Management Plan (HMP; LANL 2017a). This plan is a formal agreement between the U.S. Department of Energy (DOE)/National Nuclear Security Administration (NNSA) and the U.S. Fish and Wildlife Service for the management of endangered species and their habitats at LANL. Actions and activities approved in the HMP were reviewed by the U.S. Fish and Wildlife Service and do not require further consultations. Projects that cannot follow the HMP requirements must go through separate section 7 consultations. The controls for Endangered Species Act compliance are incorporated into an internal project review process through which all LANL projects are reviewed for environmental compliance (LANL 2017b).

  12. THREATENED FISHES OF THE WORLD: Chondrostoma kinzelbachi KRUPP, 1985 (CYPRINIDAE

    Directory of Open Access Journals (Sweden)

    Gulnaz Özcan

    2013-01-01

    Full Text Available Orontes nase, Chondrostoma kinzelbachi is an endangered freshwater fish species in Turkey and Syria. Populations are declining due to dam construction and water pollution. Orontes nase populations should be completely protected.

  13. Economics of endangered salmon in the Pacific northwest

    International Nuclear Information System (INIS)

    Hamilton, J.R.

    1993-01-01

    Under mandate of the Endangered Species Act (ESA), Idaho, Oregon and Washington are developing recovery plans to preserve several threatened and endangered stocks of salmon. These fish, some migrating as much as 900 miles inland to spawn, have been decimated by man's modification of their habitat. Downstream migrating juveniles must navigate through or around eight slackwater pools and hydropower dams. Adult upstream migrants must negotiate fish ladders, and endure modified temperature regimes and severely reduced spawning area and habitat quality. While the ESA says little about economics, economic factors do play important roles in designating endangered species and the design of recovery plans. For species in severe trouble ESA pushes us to drastic strategies such as captive breeding, or cryogenic sperm and egg preservation without paying much attention to whether the cost is worth it. For species in less dire straights, one often faces a menu of possible recovery actions from which the least cost can be set. Economics is important irrespective of the role it plays in decisions to classify salmon as endangered, or decisions about recovery plans. Economic analysis can provide those affected with information about their future. For individuals, communities, and businesses faced with adjusting to ESA actions, more good information is better than less, and economic impact estimates can be a valuable part of this information

  14. California Endangered Species Resource Guide.

    Science.gov (United States)

    California State Dept. of Education, Los Angeles.

    This document was developed in response to California Senate Bill No. 885, "The Endangered Species Education Project," that called for a statewide program in which schools adopt a local endangered species, research past and current efforts to preserve the species' habitat, develop and implement an action plan to educate the community…

  15. Fish Allergy

    Science.gov (United States)

    ... Cause Blog Vision Awards Common Allergens Fish Allergy Fish Allergy Learn about fish allergy, how to read ... that you must avoid both. Allergic Reactions to Fish Finned fish can cause severe and potentially life- ...

  16. 76 FR 35906 - Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 12 Species in the...

    Science.gov (United States)

    2011-06-20

    ... fish, wildlife, or plant, and any distinct population segment of any species of vertebrate, that interbreeds when mature; B. Endangered species means any species that is in danger of extinction throughout... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R6-ES-2011-N101; 60120-1113-0000; C4...

  17. 77 FR 25112 - Endangered and Threatened Wildlife and Plants; 5-Year Reviews of Species in California and Nevada

    Science.gov (United States)

    2012-04-27

    ...: We, the U.S. Fish and Wildlife Service, are initiating 5-year reviews for 25 species under the... subspecies of fish, wildlife, or plant, and any distinct population segment of any species of vertebrate, that interbreeds when mature; (B) Endangered species means any species that is in danger of extinction...

  18. 75 FR 15454 - Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 14 Southwestern Species

    Science.gov (United States)

    2010-03-29

    ...] Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 14 Southwestern Species AGENCY: Fish... species or subspecies of fish, wildlife, or plant, and any distinct population segment of any species of... extinction throughout all or a significant portion of its range. C. Threatened species (T) means any species...

  19. 75 FR 55820 - Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of Seven Midwest Species

    Science.gov (United States)

    2010-09-14

    ...] Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of Seven Midwest Species AGENCY: Fish... CFR 424.02: (A) Species includes any species or subspecies of fish, wildlife, or plant, and any... species means any species that is in danger of extinction throughout all or a significant portion of its...

  20. 77 FR 32922 - Endangered and Threatened Wildlife and Plants; 90-Day Finding on a Petition To Delist or...

    Science.gov (United States)

    2012-06-04

    ... Reclassify From Endangered to Threatened Six California Species AGENCY: Fish and Wildlife Service, Interior... available information indicated that the species was no longer in imminent danger of extinction and best met... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service 50 CFR Part 17 [FWS-R8-ES-2012-0026; 92220...

  1. 75 FR 17947 - Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 69 Species in Idaho...

    Science.gov (United States)

    2010-04-08

    .... Fish and Wildlife Service, are initiating 5-year reviews for 69 species in Idaho, Washington, Hawaii... our analysis of classification status: (A) Species includes any species or subspecies of fish... mature; (B) Endangered species means any species that is in danger of extinction throughout all or a...

  2. 75 FR 18233 - Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 10 Southeastern Species

    Science.gov (United States)

    2010-04-09

    ...] Endangered and Threatened Wildlife and Plants; 5-Year Status Reviews of 10 Southeastern Species AGENCY: Fish.... Definitions A. Species includes any species or subspecies of fish, wildlife, or plant, and any distinct... means any species that is in danger of extinction throughout all or a significant portion of its range...

  3. 78 FR 64839 - Endangered and Threatened Wildlife and Plants; Endangered Status for Vandenberg Monkeyflower

    Science.gov (United States)

    2013-10-29

    ... endangered species under the Endangered Species Act. If we finalize this rule as proposed, it would extend the Endangered Species Act's protections to this plant. The effect of this regulation will be to add Vandenberg monkeyflower to the List of Endangered and Threatened Plants under the Endangered Species Act...

  4. 78 FR 60607 - Endangered and Threatened Wildlife and Plants; Endangered Species Status for Echinomastus...

    Science.gov (United States)

    2013-10-01

    ... endangered species under the Endangered Species Act of 1973, as amended. This final rule implements the... the above locations. The Endangered Species Act provides basis for our action. Under the Endangered Species Act, we can determine that a species is an endangered or threatened species based on any of five...

  5. The Army and the Endangered Species Act: Who's Endangering Whom?

    National Research Council Canada - National Science Library

    Diner, David N

    1993-01-01

    Mankind is causing a mass extinction of plant and animal species. The Army, as steward of 25 million acres of public lands, is being asked to play an increasingly decisive role in recovering endangered species...

  6. 76 FR 1405 - Endangered Species

    Science.gov (United States)

    2011-01-10

    ... the understanding of the pelagic ecology of these species and allow more reliable assessments of... permit: (1) Was applied for in good faith, (2) will not operate to the disadvantage of such endangered or...

  7. 78 FR 2539 - Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Gunnison Sage...

    Science.gov (United States)

    2013-01-11

    ... Gunnison Sage-Grouse; Proposed Rule #0;#0;Federal Register / Vol. 78 , No. 8 / Friday, January 11, 2013...; Designation of Critical Habitat for Gunnison Sage-Grouse AGENCY: Fish and Wildlife Service, Interior. ACTION... the Gunnison sage-grouse (Centrocercus minimus) under the Endangered Species Act of 1973, as amended...

  8. 75 FR 56131 - Endangered and Threatened Wildlife and Plants; Draft Revised Recovery Plan for the Northern...

    Science.gov (United States)

    2010-09-15

    ... on the MOCA network recommended in the 2008 Recovery Plan and will instead use the model results to... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R1-ES-2010-N184; 10120-1113-0000-C2] Endangered and Threatened Wildlife and Plants; Draft Revised Recovery Plan for the Northern Spotted Owl...

  9. 75 FR 66387 - Endangered and Threatened Wildlife and Plants; Assisting States, Federal Agencies, and Tribes in...

    Science.gov (United States)

    2010-10-28

    ...] Endangered and Threatened Wildlife and Plants; Assisting States, Federal Agencies, and Tribes in Managing...) announces the availability for public review of a draft national plan to assist States, Federal agencies... Management, National Park Service, and FWS; St. Regis Mohawk Tribe; Kentucky Department of Fish and Wildlife...

  10. 76 FR 48881 - Recovery Plan for the Endangered Pyne's Ground-plum (Astragalus bibullatus

    Science.gov (United States)

    2011-08-09

    ... plan by contacting the Tennessee Field Office, U.S. Fish and Wildlife Service, 446 Neal Street... implementing approved recovery plans. Restoring an endangered or threatened animal or plant to the point where... species program. To help guide the recovery effort, we are preparing recovery plans for most listed...

  11. 75 FR 24741 - Endangered and Threatened Wildlife and Plants; Mexican Wolf (Canis lupus baileyi) Conservation...

    Science.gov (United States)

    2010-05-05

    ...] Endangered and Threatened Wildlife and Plants; Mexican Wolf (Canis lupus baileyi) Conservation Assessment... Mexico Ecological Services Field Office, 2105 Osuna NE, Albuquerque, NM 87113; by telephone at 505-761... guided by the 1982 Mexican Wolf Recovery Plan (U.S. Fish and Wildlife Service 1982) (recovery plan...

  12. 75 FR 59285 - Endangered and Threatened Wildlife and Plants; Permit, San Luis Obispo County, CA

    Science.gov (United States)

    2010-09-27

    ...] Endangered and Threatened Wildlife and Plants; Permit, San Luis Obispo County, CA AGENCY: U.S. Fish and... project in the community of Los Osos, San Luis Obispo County, California. We invite comments from the... community of Los Osos, San Luis Obispo County, California. The parcel is legally described as Assessor...

  13. 75 FR 8735 - Endangered and Threatened Wildlife and Plants; Permit, San Luis Obispo County, CA

    Science.gov (United States)

    2010-02-25

    ...] Endangered and Threatened Wildlife and Plants; Permit, San Luis Obispo County, CA AGENCY: Fish and Wildlife... Luis Obispo County, California. We invite comments from the public on the application, which includes a... Luis Obispo County, California, that will meet Americans with Disabilities Act (ADA) accessibility...

  14. Freshwater fishes of Tsitsikamma National Park

    Directory of Open Access Journals (Sweden)

    I.A. Russell

    2002-12-01

    Full Text Available This study aimed to determine the distribution and relative abundance of freshwater fishes in the Tsitsikamma National Park. Fish assemblages in six river systems were sampled in 2001, with a total of 323 fish from eight species recorded. Indigenous fish collected included four freshwater species (Pseudobarbus afer, Pseudobarbus tenuis, Sandelia capensis, Anguilla mossambica, three estuarine species (Monodactylus falciformis, Caffrogobius gilchristi, Myxus capensis, and one alien (Micropterus salmoides. One additional indigenous species (Galaxias zebratus and two aliens (Salmo trutta, Oncorhynchus mykiss could potentially occur within the park. The topography and locality of the park presents a unique opportunity to meaningfully conserve the endangered P. tenuis as well as other fish characteristic of the eastern reaches of the Cape Floristic Region. Management action is required to minimise opportunities for further establishment and spread of alien fish species and to conserve indigenous fish assemblages within the park.

  15. 78 FR 41227 - Endangered and Threatened Wildlife and Plants; Determination of Endangered Species Status for Six...

    Science.gov (United States)

    2013-07-09

    ... of an endangered species under the Endangered Species Act of 1973: Phantom springsnail (Pyrgulopsis... final rule implements the Federal protections provided by the Endangered Species Act for these species... Wildlife under the Endangered Species Act. DATES: This rule becomes effective August 8, 2013. ADDRESSES...

  16. 77 FR 63439 - Endangered and Threatened Wildlife and Plants; Proposed Endangered Status for the Neosho Mucket...

    Science.gov (United States)

    2012-10-16

    ... freshwater mussel, as threatened under the Endangered Species Act; and propose to designate critical habitat... Endangered Species Act (Act), a species may warrant protection through listing if it is endangered or..., Pennsylvania, Tennessee, and West Virginia. The basis for our action. Under the Endangered Species Act, a...

  17. Humans are one of several users of forage fish re- sources. Others ...

    African Journals Online (AJOL)

    and Dyer 1995), fish species that also contribute the bulk of the ... layed sexual maturity, that act to buffer their popula- .... The Act took cognizance of several international ..... seals displace endangered, endemic seabirds off Namibia. Biol.

  18. Environmental contaminants in shortnose sturgeon from Bears Bluff National Fish Hatchery, Wadmalaw Island, South Carolina

    Data.gov (United States)

    Department of the Interior — The shortnose sturgeon (Acipenser brevirostrum) is a federally‐listed endangered species. In 2008, eleven shortnose sturgeon, reared at the Bears Bluff National Fish...

  19. Satellite lakes as reservoirs of fish species diversity

    OpenAIRE

    Nkalubo, W.; Wandera, S.B.; Namulemo, G.

    2010-01-01

    Satellite lakes and rivers in the Victoria and Kyoga basins provide a sanctuary for endangered native fish species. The structural heterogeneity of macrophyte covering these lakes has made it possible for most of the biodiversity to be kept intact. The Kyoga minor lakes have the highest fish species diversity especially of the haplochromines. Most fish communities of these satellite lakes are composed of native species.

  20. 3 CFR - The Endangered Species Act

    Science.gov (United States)

    2010-01-01

    ... 3 The President 1 2010-01-01 2010-01-01 false The Endangered Species Act Presidential Documents Other Presidential Documents Memorandum of March 3, 2009 The Endangered Species Act Memorandum for the Heads of Executive Departments and Agencies The Endangered Species Act (ESA), 16 U.S.C. 1531 et seq...

  1. 22 CFR 216.5 - Endangered species.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Endangered species. 216.5 Section 216.5 Foreign Relations AGENCY FOR INTERNATIONAL DEVELOPMENT ENVIRONMENTAL PROCEDURES § 216.5 Endangered species. It is A... endangered or threatened species and their critical habitats. The Initial Environmental Examination for each...

  2. Star-Mapping Tools Enable Tracking of Endangered Animals

    Science.gov (United States)

    2009-01-01

    Software programmer Jason Holmberg of Portland, Oregon, partnered with a Goddard Space Flight Center astrophysicist to develop a method for tracking the elusive whale shark using the unique spot patterns on the fish s skin. Employing a star-mapping algorithm originally designed for the Hubble Space Telescope, Holmberg created the Shepherd Project, a photograph database and pattern-matching system that can identify whale sharks by their spots and match images contributed to the database by photographers from around the world. The system has been adapted for tracking other rare and endangered animals, including polar bears and ocean sunfish.

  3. Resource implications of listing Columbia River Basin salmon stocks under the endangered species act

    International Nuclear Information System (INIS)

    Velehradsky, J.E.

    1993-01-01

    The Columbia River and Snake River dams and reservoirs provide substantial benefits in the Northwest through their operation for hydropower, flood control, irrigation, navigation, and fish and wildlife. The listing of certain Snake River salmon stocks as endangered and threatened, under provisions of the Endangered Species Act, has surfaced major public policy issues. Protection and enhancement of these salmon stocks has resulted in proposals to significantly modify the operation of the reservoir projects. Implementation of these proposals could have significant economic, environmental and social impacts in the region

  4. Native fish conservation areas: a vision for large-scale conservation of native fish communities

    Science.gov (United States)

    Jack E. Williams; Richard N. Williams; Russell F. Thurow; Leah Elwell; David P. Philipp; Fred A. Harris; Jeffrey L. Kershner; Patrick J. Martinez; Dirk Miller; Gordon H. Reeves; Christopher A. Frissell; James R. Sedell

    2011-01-01

    The status of freshwater fishes continues to decline despite substantial conservation efforts to reverse this trend and recover threatened and endangered aquatic species. Lack of success is partially due to working at smaller spatial scales and focusing on habitats and species that are already degraded. Protecting entire watersheds and aquatic communities, which we...

  5. Outplanting of the Endangered Pondberry

    Science.gov (United States)

    Margaret S. Devall; Nathan M. Schiff; Stephanie A. Skojac

    2004-01-01

    Pondberry [Lindera melissifolia (Walt) Blume, Lauraceae] is an endangered shrub that occurs in seasonally flooded wetlands in the Southeastern United States. We established new pondberry populations as an aid in conserving the species, whose distribution and abundance have been affected by habitat destruction and alteration. We dug equal numbers of...

  6. Endangered Species: An Educator's Handbook.

    Science.gov (United States)

    Smith, Jean, M., Comp.

    Presented are two articles, an annotated bibliography, and other information useful in teaching about endangered species, especially those found in Florida. The articles provide an ethical rationale, teaching suggestions, and a discussion of the value of wildlife. Descriptions of over 100 pertinent books, periodicals, movies, and filmstrips are in…

  7. Ecology of Hawaiian marine mammals emphasizing the impact of Ocean Thermal Energy Conversion (OTEC) on endangered species

    Energy Technology Data Exchange (ETDEWEB)

    Payne, S.F.; Hartwig, E.O.

    1982-06-01

    Twenty-two marine mammal species including 2 baleen whales, 20 toothed whales, and one pinniped occur in Hawaiian waters. Among these are two endangered species, the migratory humpback whale (Megaptera novaengliae) around the main islands, and the non-migratory Hawaiian monk seal (Monachus schauinslandi) in the extreme northwestern island chain. The endangered species are among those most commonly sighted, while spinner dolphins (Stenella spp.), bottle-nosed dolphins (Tursiops sp.), and false killer whales (Pseudorca crassidens) are sighted less frequently. Most Hawaiian cetacean species are Odontoceti, or toothed whales, and feed on fish and squid. The Mysteceti or baleen whales feed on plankton, however the endangered humpback whale, which migrates to Hawaii to breed and calve, presumably does not feed there. The endangered monk seal feeds on cephalopods and fish. The impact of OTEC on endangered and non-endangered marine mammals results from several direct and indirect effects and is discussed in the text. Careful siting of OTEC plants away from humpback breeding areas and monk seal breeding and feeding areas will avoid adverse effects on these populations.

  8. Fish Allergy

    Science.gov (United States)

    ... Safe Videos for Educators Search English Español Fish Allergy KidsHealth / For Parents / Fish Allergy What's in this ... Print en español Alergia al pescado About Fish Allergy A fish allergy is not exactly the same ...

  9. A checklist of fishes of Kerala, India

    Directory of Open Access Journals (Sweden)

    A. Bijukumar

    2015-11-01

    Full Text Available A checklist of the fishes of Kerala State is presented, along with their scientific and common names (English and Malayalam, endemism, IUCN Red List status, listing under different Schedules of the Indian Wildlife (Protection Act and in the Appendices of Convention on International Trade in Endangered Species of Wild Flora and Fauna (CITES. Nine Hundred and five species of fishes are recorded from the inland and marine waters of Kerala comprising of 41 orders and 172 families. Close to 30% of the freshwater fish species found in Kerala are endemic to the State. Only 8% of the total fishes of Kerala are listed as threatened in the IUCN Red List, of which the majority are freshwater species. Several hundred fish species occurring in the marine waters of Kerala have not yet been assessed for their conservation status by IUCN.  

  10. 77 FR 30261 - Petition To List 83 Species of Coral as Threatened or Endangered Under the Endangered Species Act...

    Science.gov (United States)

    2012-05-22

    ... List 83 Species of Coral as Threatened or Endangered Under the Endangered Species Act (ESA) AGENCY... Diversity (CBD) to list 83 coral species as threatened or endangered under the Endangered Species Act (ESA... the U.S. Endangered Species Act (Status Review Report) and the draft Management Report for 82 Corals...

  11. Endangered Lilium Species of Turkey

    Directory of Open Access Journals (Sweden)

    Sevim Demir

    2018-01-01

    Full Text Available Turkey, which is among the major gene centers of the world and has a special place in plant genetic diversity. However, many plant genetic resources, including geophytes, are under genetic erosion because of the environmental and other problems and therefore face with the danger of extinction. Lilium ciliatum is endemic to North East Anatolia. IUCN (International Union for the Conservation of Natural Resources Red List Category of this species is Endangered (EN. Lilium ciliatum naturally grown in Zigana pass, Bayburt, Trabzon, Bulancak, Giresun and Gümüşhane is endangered and major threats of L. ciliatum are road construction and human disturbance related to ecotourism and recreation. It was reported that Lilium carniolicum naturally grown in Turkey is endangered although it isn’t in the IUCN Red List. Distribution areas of L. carniolicum are Trabzon, Rize, Artvin and it is also endemic to North East Anatolia. These species have high potential for use as ornamental plants with their colorful big flowers. In addition, the bulbs of these species are also used in the cosmetic industry and medicine. These are the main properties that increase the importance of L. ciliatum and L. carniolicum species. Therefore it is very important to protect the habitats of these species, ensure the continuity of their generations. The disappearance of these endemic species from our country means to disappear from the world. This review has been given in order to give some information about the endangered Lilium species of Turkey and conservation actions on these species in Turkey flora and take attention to the issue.

  12. Chromosomes of European cyprinid fishes: comparative cytogenetics and chromosomal characteristics of ribosomal DNAs in nine Iberian chondrostomine species (Leuciscinae)

    Czech Academy of Sciences Publication Activity Database

    Pereira, C. S.; Ráb, Petr; Collares-Pereira, M. J.

    2012-01-01

    Roč. 140, č. 10 (2012), s. 485-495 ISSN 0016-6707 Institutional support: RVO:67985904 Keywords : fish cytotaxonomy * endangered cyprinids * rDNA Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 1.681, year: 2012

  13. Threatened and endangered species evaluation for 75 licensed commercial nuclear power generating plants

    Energy Technology Data Exchange (ETDEWEB)

    Sackschewsky, M.R.

    1997-03-01

    The Endangered Species Act (ESA) of 1973, as amended, and related implementing regulations of the jurisdictional federal agencies, the U.S. Departments of Commerce and Interior, at 50 CFR Part 17. 1, et seq., require that federal agencies ensure that any action authorized, funded, or carried out under their jurisdiction is not likely to jeopardize the continued existence of any threatened or endangered species or result in the destruction or adverse modification of critical habitats for such species. The issuance and maintenance of a federal license, such as a construction permit or operating license issued by the U.S. Nuclear Regulatory Commission (NRC) for a commercial nuclear power generating facility is a federal action under the jurisdiction of a federal agency, and is therefore subject to the provisions of the ESA. The U.S. Department of the Interior (through the Fish and Wildlife Service), and the U.S. Department of Commerce, share responsibility for administration of the ESA. The National Marine Fisheries Service (NMFS) deals with species that inhabit marine environments and anadromous fish, while the U.S. Fish and Wildlife Service (USFWS) is responsible for terrestrial and freshwater species and migratory birds. A species (or other distinct taxonomic unit such as subspecies, variety, and for vertebrates, distinct population units) may be classified for protection as `endangered` when it is in danger of extinction within the foreseeable future throughout all or a significant portion of its range. A `threatened` classification is provided to those animals and plants likely to become endangered within the foreseeable future throughout all or a significant portion of their ranges. As of February 1997, there were about 1067 species listed under the ESA in the United States. Additionally there were approximately 125 species currently proposed for listing as threatened or endangered, and another 183 species considered to be candidates for formal listing proposals.

  14. Threatened and endangered species evaluation for 75 licensed commercial nuclear power generating plants

    International Nuclear Information System (INIS)

    Sackschewsky, M.R.

    1997-03-01

    The Endangered Species Act (ESA) of 1973, as amended, and related implementing regulations of the jurisdictional federal agencies, the U.S. Departments of Commerce and Interior, at 50 CFR Part 17. 1, et seq., require that federal agencies ensure that any action authorized, funded, or carried out under their jurisdiction is not likely to jeopardize the continued existence of any threatened or endangered species or result in the destruction or adverse modification of critical habitats for such species. The issuance and maintenance of a federal license, such as a construction permit or operating license issued by the U.S. Nuclear Regulatory Commission (NRC) for a commercial nuclear power generating facility is a federal action under the jurisdiction of a federal agency, and is therefore subject to the provisions of the ESA. The U.S. Department of the Interior (through the Fish and Wildlife Service), and the U.S. Department of Commerce, share responsibility for administration of the ESA. The National Marine Fisheries Service (NMFS) deals with species that inhabit marine environments and anadromous fish, while the U.S. Fish and Wildlife Service (USFWS) is responsible for terrestrial and freshwater species and migratory birds. A species (or other distinct taxonomic unit such as subspecies, variety, and for vertebrates, distinct population units) may be classified for protection as 'endangered' when it is in danger of extinction within the foreseeable future throughout all or a significant portion of its range. A 'threatened' classification is provided to those animals and plants likely to become endangered within the foreseeable future throughout all or a significant portion of their ranges. As of February 1997, there were about 1067 species listed under the ESA in the United States. Additionally there were approximately 125 species currently proposed for listing as threatened or endangered, and another 183 species considered to be candidates for formal listing proposals

  15. 77 FR 13251 - Endangered and Threatened Wildlife and Plants; Initiation of a 5-Year Review of Nine Northeastern...

    Science.gov (United States)

    2012-03-06

    ... the following definitions from 50 CFR 424.02: (A) Species includes any species or subspecies of fish... as judged against the definition of endangered or threatened. IV. How do we determine whether a... of existing regulatory mechanisms; or (E) Other natural or man-made factors affecting its continued...

  16. 75 FR 24545 - Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for the Polar Bear...

    Science.gov (United States)

    2010-05-05

    ... Critical Habitat for the Polar Bear in the United States AGENCY: Fish and Wildlife Service, Interior... designation of critical habitat for the polar bear (Ursus maritimus) under the Endangered Species Act of 1973... for the polar bear and on the DEA, and an amended required determinations section of the proposal. We...

  17. 77 FR 4492 - Endangered and Threatened Wildlife and Plants; Reissuance of Interim Special Rule for the Polar Bear

    Science.gov (United States)

    2012-01-30

    ... Special Rule for the Polar Bear AGENCY: Fish and Wildlife Service, Interior. ACTION: Final rule. SUMMARY... order in regard to Misc. No. 08- 764 (EGS) MDL Docket No. 1993 IN RE: POLAR BEAR ENDANGERED SPECIES ACT... December 16, 2008, final special rule for the polar bear (73 FR 76249). The Court further ordered that in...

  18. 78 FR 17709 - Endangered and Threatened Wildlife and Plants; Recovery Plan for Rogue and Illinois Valley Vernal...

    Science.gov (United States)

    2013-03-22

    ... localities for implementing actions, while the recovery actions describe a process for implementing... DEPARTMENT OF THE INTERIOR Fish and Wildlife Service [FWS-R1-ES-2012-N198; FXES11130100000C2-123-FF01E00000] Endangered and Threatened Wildlife and Plants; Recovery Plan for Rogue and Illinois Valley Vernal...

  19. Scaling up from an individual to a population-level assessment for risks of pesticides to threatened and endangered birds

    Science.gov (United States)

    The U.S. Environmental Protection Agency (EPA), in collaboration with the National Marine Fisheries Service and the U.S. Fish and Wildlife Service is currently developing a methodology to assess the risks of pesticides to federally-listed threatened and endangered species. In thi...

  20. 75 FR 57055 - Endangered and Threatened Wildlife and Plants; Draft Revised Recovery Plan for Utah Prairie Dog

    Science.gov (United States)

    2010-09-17

    ...] Endangered and Threatened Wildlife and Plants; Draft Revised Recovery Plan for Utah Prairie Dog AGENCY: Fish... recovery plan for the Utah prairie dog (Cynomys parvidens). This species is federally listed as threatened... and peer reviewers in an appendix to the approved recovery plan. The Utah prairie dog (Cynomys...

  1. 75 FR 50739 - Endangered and Threatened Wildlife and Plants; 90-Day Finding on a Petition to List Brian Head...

    Science.gov (United States)

    2010-08-17

    ... business hours, at the U.S. Fish and Wildlife Service, Mountain-Prairie Regional Ecological Services Office... FURTHER INFORMATION CONTACT: Ann Carlson, Mountain-Prairie Regional Ecological Services Office (see... threats that act on the species to the point that the species may meet the definition of endangered or...

  2. 76 FR 56381 - Endangered and Threatened Wildlife and Plants; 90-Day Finding on a Petition To List the Franklin...

    Science.gov (United States)

    2011-09-13

    ... distributions of any bumble bee in the world (Williams 1998, as cited in the petition (p. 6)). The original... To List the Franklin's Bumble Bee as Endangered AGENCY: Fish and Wildlife Service, Interior. ACTION... Service (Service), announce a 90-day finding on a petition to list the Franklin's bumble bee (Bombus...

  3. Fish allergy and fish allergens

    DEFF Research Database (Denmark)

    Kuehn, A; Hilger, Christiane; Ollert, Markus

    2016-01-01

    Fish is one of the main elicitors for food allergies. For a long time, the clinical picture of fish allergy was reduced to the following features. First, fish-allergic patients suffer from a high IgE cross-reactivity among fishes so that they have to avoid all species. Second, clinically relevant...... symptoms are linked to the presence of IgE-antibodies recognizing parvalbumin, the fish panallergen. This view was challenged by results from recent studies as follows. 1. Allergic reactions which are limited to single or several fish species (mono-or oligosensitisations) apply not only to single cases...... but patients with this phenotype constitute an important sub-group among fish-allergic individuals. 2. Newly identified fish allergens, enolases, aldolases, and fish gelatin, are of high relevance as the majority of the fish-allergic individuals seem to develop specific IgE against these proteins. The present...

  4. Evaluation of 757 Species Under U.S. Endangered Species Act Review on U.S. Department of Defense Lands and their Potential Impact on Army Training

    Science.gov (United States)

    2016-03-15

    Colligyrus n. sp. 2 Masked Duskysnail invertebrate Cordia rupicola Puerto Rico manjack plant Cordulegaster sayi Say’s Spiketail invertebrate Coreopsis...threatened and endangered plants and animals. Balancing threatened and endan- gered species (TES) management with training requirements is an increas...nation’s threatened and endangered plants and animals. A recent lawsuit settled by the U.S. Fish and Wildlife Service (USFWS) requires a review of 757

  5. 76 FR 31556 - Endangered and Threatened Wildlife and Plants; Endangered Species Act Listing Determination for...

    Science.gov (United States)

    2011-06-01

    ... Atlantic bluefin tuna (Thunnus thynnus) as threatened or endangered under the Endangered Species Act (ESA... Species Act Listing Determination for Atlantic Bluefin Tuna AGENCY: National Marine Fisheries Service... endangered species within the foreseeable future throughout all or a significant portion of its range.'' The...

  6. 77 FR 49601 - Endangered and Threatened Wildlife and Plants; Endangered Status for Six West Texas Aquatic...

    Science.gov (United States)

    2012-08-16

    ... critical habitat for six west Texas aquatic invertebrate species under the Endangered Species Act. These... their habitat under the Endangered Species Act. DATES: We will accept comments received or postmarked on... Pecos County, Texas. Why we need to publish a rule. Under the Endangered Species Act, a species may...

  7. Eutropiichthys vacha (Hamilton, 1822, a threatened fish of Indian subcontinent

    Directory of Open Access Journals (Sweden)

    Sandipan Gupta

    2016-08-01

    Full Text Available Eutropiichthys vacha (Batchwa vacha is a freshwater catfish species having high economic value. It is a very popular table fish among the consumers due to high nutritional value and taste. Just recently small specimens of this species have also made their entry in ornamental fish markets. Recently due to number of reasons, populations of this fish species are facing the threat of extinction. It has already been documented as Endangered in India and Critically Endangered in Bangladesh. The present report has been prepared to summarize the information available on different aspects of this threatened fish species as well as to point out the possible measures that should be considered for its conservation.

  8. Endangered Species & Biodiversity: A Classroom Project & Theme

    Science.gov (United States)

    Lauro, Brook

    2012-01-01

    Students discover the factors contributing to species losses worldwide by conducting a project about endangered species as a component of a larger classroom theme of biodiversity. Groups conduct research using online endangered- species databases and present results to the class using PowerPoint. Students will improve computer research abilities…

  9. Endangered Species (Plants). LC Science Tracer Bullet.

    Science.gov (United States)

    Niskern, Diana, Comp.

    This guide is intended for those who wish to study the literature dealing with various aspects of endangered plant species. This document includes the following sections, some of which are bibliographies: (1) "Introductions to the Topic"; (2) "Subject Headings" (for endangered species of plants used by the Library of Congress); (3) "General…

  10. Endangered Species: Real Life in Two Dimensions

    Science.gov (United States)

    Henderson, Lynette K.

    2012-01-01

    The focus of "Endangered Species: Real Life in Two Dimensions" is to create awareness about a critical environmental issue. There is a special urgency to this project because large numbers of animal species are currently endangered or on the brink of extinction. In addition to being enlightened about this important topic through research, students…

  11. Occurrence and effect of trematode metacercariae in two endangered killifishes from Greece.

    Science.gov (United States)

    Kalogianni, Eleni; Kmentová, Nikol; Harris, Eileen; Zimmerman, Brian; Giakoumi, Sofia; Chatzinikolaou, Yorgos; Vanhove, Maarten P M

    2017-11-01

    We report digeneans (Diplostomidae, Crassiphialinae) in the endangered freshwater fishes Valencia letourneuxi and Valencia robertae, endemics of Western Greece. Digenean metacercariae occurred in two forms in the abdominal cavity, excysted and encysted, the latter attached to the gonads, liver and alimentary tract. Parasites were, using morphological and molecular techniques, identified as two representatives of Crassiphialinae, specifically part of the Posthodiplostomum-Ornithodiplostomum clade. The spatial, seasonal, and age class variation in parasite prevalence was examined. Autumn parasite prevalence varied between the six populations sampled (18.2 to 100%). Seasonal prevalence at the two sites sampled quadannually peaked in autumn and reached its lowest value in spring; prevalence increased with size to 100% in young adult fish. We did not find a correlation between prevalence and host sex. Overall parasites' weight averaged 0.64% of the host's, while parasite weight increased with host weight. A comparison of relative condition and hepatosomatic and gonadosomatic indices of infected and metacercariae-free specimens showed that infection did not have a significant effect on host body condition and reproduction. Regarding the parasite's life cycle, planorbid gastropods are proposed as potential first intermediate hosts in view of the host's diet and occurrence data of molluscs in the ecosystem. This is the first record of a diplostomid digenean in valenciid fishes and of representatives of the Posthodiplostomum-Ornithodiplostomum clade in a native Greek freshwater fish. Our findings are discussed in conjunction to fish conservation interventions, since parasites may contribute to the decline of endangered species.

  12. Conservation status of imperiled north American freshwater and diadromous fishes

    Science.gov (United States)

    Jelks, H.L.; Walsh, S.J.; Burkhead, N.M.; Contreras-Balderas, Salvador; Diaz-Pardo, E.; Hendrickson, D.A.; Lyons, J.; Mandrak, N.E.; McCormick, F.; Nelson, Joseph S.; Platania, Steven P.; Porter, B.A.; Renaud, C.B.; Schmitter-Soto, J. J.; Taylor, E.B.; Warren, M.L.

    2008-01-01

    This is the third compilation of imperiled (i.e., endangered, threatened, vulnerable) plus extinct freshwater and diadromous fishes of North America prepared by the American Fisheries Society's Endangered Species Committee. Since the last revision in 1989, imperilment of inland fishes has increased substantially. This list includes 700 extant taxa representing 133 genera and 36 families, a 92% increase over the 364 listed in 1989. The increase reflects the addition of distinct populations, previously non-imperiled fishes, and recently described or discovered taxa. Approximately 39% of described fish species of the continent are imperiled. There are 230 vulnerable, 190 threatened, and 280 endangered extant taxa, and 61 taxa presumed extinct or extirpated from nature. Of those that were imperiled in 1989, most (89%) are the same or worse in conservation status; only 6% have improved in status, and 5% were delisted for various reasons. Habitat degradation and nonindigenous species are the main threats to at-risk fishes, many of which are restricted to small ranges. Documenting the diversity and status of rare fishes is a critical step in identifying and implementing appropriate actions necessary for their protection and management.

  13. A bioeconomic perspective on the Endangered Species Act

    Science.gov (United States)

    Salau, K. R.; Fenichel, E. P.

    2012-12-01

    Habitat destruction threatens species existence and has recently accelerated due to population growth, urban sprawl, agricultural development and other profitable land conversions on public and private lands. To exacerbate this issue, the public good nature of species existence creates strong incentives for landowners to engage in free-riding behavior and forego conservation on managed lands. To reverse these negative effects, the United States Congress passed the Endangered Species Act (ESA) in 1973 to create a set of rules for planning government intervention to protect dwindling fish, wildlife, and plant populations and create a platform for recovery and conservation. The ESA is quite explicit about how to make tradeoffs when listing a species as threatened or endangered - only evaluation of biological risks faced are considered. But the act is unclear about what information can or should be used when determining delisting criteria for endangered species. The ESA mandates federal participation in conservation and, in many cases, agencies must curtail socially beneficial activities (e.g. grazing, renewable energy development, mining, military training) in order to meet species recovery objectives. As funding for conservation on federal lands is limited, this creates an implicit tradeoff between recovering species - to gain post-delisting managerial flexibility - and preventing extinction - to minimize management costs. In this respect, reconciliation of biological recovery goals amidst budget constraints and alternate land-use benefits should be supplemented by economic analysis. Economic tradeoffs are inherent in species recovery under the ESA, but the act does not discuss how agencies should structure a recovery plan in light of such factors. This study outlines a bioeconomic approach to framing the recovery problem under the ESA and provides a framework for simultaneously establishing measurable delisting criteria and a least-cost path to recovery. This

  14. Misuse of Checklist Assessments in Endangered Species Recovery Efforts

    Directory of Open Access Journals (Sweden)

    Thomas P. Good

    2003-12-01

    Full Text Available Natural resource agencies worldwide must develop species recovery plans that specify threats, propose targets required for recovery, and evaluate the extent to which habitat alteration and restoration may influence species decline and recovery. To evaluate the impacts of proposed habitat alterations on species of conservation concern, standardized protocols may be adopted even when supporting data are scarce. For example, a habitat matrix was developed by the National Marine Fisheries Service (NMFS to guide consultations under the Endangered Species Act for actions that may affect the functioning of the freshwater habitat used by several federally listed salmonid species. The habitat matrix has also been advocated as a tool for recovery planning by agencies apart from the NMFS, who could use it to define the habitat conditions assumed to be necessary for salmonid population viability and hence recovery. This use of the habitat matrix in a recovery context has not been evaluated, and, despite its widespread use as a regulatory tool, the empirical relationships between many of the habitat matrix variables and salmonid populations remain unexplored. By amassing data on habitat assessments and trends in fish abundance, we empirically evaluate the relationship between habitat matrix scores and salmonid population metrics. We found that abundance trends for populations of three species of threatened and endangered salmonids (chinook, coho, and steelhead were unrelated to these habitat matrix assessments. This study reveals the danger of assuming quantitative relationships between habitat and organism and cautions against co-opting protocols from the regulatory realm for recovery planning for endangered species.

  15. Fish and mussels: importance of fish for freshwater mussel conservation

    Directory of Open Access Journals (Sweden)

    Ronaldo Sousa

    2015-12-01

    Full Text Available Co-extinctions have received trivial consideration in discussions about the global conservation crisis, even though recent studies have emphasised their importance. This situation is even more pronounced in freshwater ecosystems where this phenomenon is largely unrecognized. In this presentation we explore the role of fish for freshwater mussels’ conservation. Freshwater mussels’ need fish as a host to complete their life cycle and given this premise is expected that changes in the fish community due to species extinctions or additions may have great effects. We reviewed the published information and we found: 1 that most of the studies were published in the last few years; 2 that most of the studies were performed in North America (69%, which is probably due to the high number of endemic threatened species in this continent; 3 that most of the mussel species that are specialists in fish hosting are listed as vulnerable or endangered (55%; 4 most studies were performed in laboratory (83% and 5 that the majority of studies were focused on life cycle or on identifying suitable fish hosts of freshwater mussel species with few studies focusing on threats. Since the interaction between fish and freshwater mussels can be easily disrupted and serious threats to this interaction have arisen (e.g. loss and fragmentation of habitat, changes in river flow, climate change, introduction of invasive species, pollution a more holistic approach is needed to find the best management strategies to conserve these animals. In addition, more field studies are required and more information on African, South American and Asian species is essential. Neglect the possible fundamental role of fish in the decline or extinction of freshwater mussels may impair the success of any measure devoted to their conservation; therefore, this issue cannot be ignored.

  16. 50 CFR 451.03 - Endangered Species Committee.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Endangered Species Committee. 451.03... ADMINISTRATION, DEPARTMENT OF COMMERCE); ENDANGERED SPECIES COMMITTEE REGULATIONS ENDANGERED SPECIES EXEMPTION PROCESS APPLICATION PROCEDURE § 451.03 Endangered Species Committee. (a) Scope. This section contains...

  17. Fish Rhabdoviruses

    Science.gov (United States)

    Kurath, G.; Winton, J.

    2008-01-01

    Many important viral pathogens of fish are members of the family Rhabdoviridae. The viruses in this large group cause significant losses in populations of wild fish as well as among fish reared in aquaculture. Fish rhabdoviruses often have a wide host and geographic range, and infect aquatic animals in both freshwater and seawater. The fish rhabdoviruses comprise a diverse collection of isolates that can be placed in one of two quite different groups: isolates that are members of the established genusNovirhabdovirus, and those that are most similar to members of the genus Vesiculovirus. Because the diseases caused by fish rhabdoviruses are important to aquaculture, diagnostic methods for their detection and identification are well established. In addition to regulations designed to reduce the spread of fish viruses, a significant body of research has addressed methods for the control or prevention of diseases caused by fish rhabdoviruses, including vaccination. The number of reported fish rhabdoviruses continues to grow as a result of the expansion of aquaculture, the increase in global trade, the development of improved diagnostic methods, and heightened surveillance activities. Fish rhabdoviruses serve as useful components of model systems to study vertebrate virus disease, epidemiology, and immunology.

  18. Forest landscape restoration: linkages with stream fishes of the southern United States

    Science.gov (United States)

    Melvin L. Warren

    2012-01-01

    With well over 600 native species, the southern United States supports one of the richest temperate freshwater fish faunas on Earth (Fig. 10.1 ). Unfortunately, an expert review revealed that 27% (188 taxa) of southern fishes are endangered, threatened, or vulnerable (Warren et al. 2000 ) and that 16–18% of native fishes are imperiled in 45 of 51 major southern river...

  19. 77 FR 22749 - Petition To List 83 Species of Coral as Threatened or Endangered Under the Endangered Species Act...

    Science.gov (United States)

    2012-04-17

    ... threatened or endangered under the Endangered Species Act (ESA) and to notify the public about future public... Candidate Coral Species Petitioned Under the U.S. Endangered Species Act (Status Review Report) and the draft Management Report for 82 Corals Status Review under the Endangered Species Act: Assessment of...

  20. 78 FR 40669 - Endangered and Threatened Wildlife and Plants; Endangered Species Status for Cape Sable...

    Science.gov (United States)

    2013-07-08

    ... and Plants; Endangered Species Status for Cape Sable Thoroughwort, Florida Semaphore Cactus, and... thoroughwort), Consolea corallicola (Florida semaphore cactus), and Harrisia aboriginum (aboriginal prickly...

  1. Fish health and fish quality

    DEFF Research Database (Denmark)

    Ingerslev, Hans-Christian

    Aquaculture is an expanding worldwide industry producing an increasing amount of fish every year. The quality of the fish meat is dependent upon many biological and non-biological factors. Infectious diseases are known to cause bleedings and damage of the muscle tissue that may lead to scarring...... are poorly described in fish. The present work in this thesis focused on: 1) examination of potential changes in the quality regarding texture of the muscle tissue in rainbow trout (Oncorhynchus mykiss) after previous infection with the bacterial pathogens Yersinia ruckeri and Vibrio anguillarum; 2...... of these studies showed that previous infections by Yersinia ruckeri and Vibrio anguillarum gave rise to subsequent changes regarding textural quality parameters in fresh fish meat, while no differences were seen for cold-smoked meat from the same fish. The texture in previous infected fish was less flaky and less...

  2. CONSERVATION METHODS OF ENDANGERED SPECIES GUNDU ...

    African Journals Online (AJOL)

    user

    Department of Forestry, Akperan Orshi College of Agriculture Yandev, Gboko ... conservation measure, an endangered species finally goes into extinction, that ... either for tourism, scientific studies/ .... economic, educational, scientific, cultural.

  3. Density of Threatened and Endangered Species

    Data.gov (United States)

    California Natural Resource Agency — A compiled density of threatened and endangered species built around 2000m wide hexagonal cells. The dataset was created by generating a blank hex grid, intersecting...

  4. Threatened and Endangered Terrestrial Animal Species Richness

    Data.gov (United States)

    U.S. Environmental Protection Agency — These data represent predicted current distributions of all U.S. listed threatened and endangered mammals, birds, reptiles, and amphibians in the Middle-Atlantic...

  5. Endangered species toxicity extrapolation using ICE models

    Science.gov (United States)

    The National Research Council’s (NRC) report on assessing pesticide risks to threatened and endangered species (T&E) included the recommendation of using interspecies correlation models (ICE) as an alternative to general safety factors for extrapolating across species. ...

  6. Fish pelleting

    African Journals Online (AJOL)

    PUBLICATIONS1

    fish meal pelletizing machine utilized 4kg of ingredients to produce 3.77kg pellets at an effi- ciency of .... Design and fabrication of fish meal pellet processing machine ... 53 ... horsepower for effective torque application on .... two edges were tacked with a spot weld to hold ... then welded on to the shaft making sure that the.

  7. Fish parasites

    DEFF Research Database (Denmark)

    This book contains 22 chapters on some of the most important parasitic diseases in wild and farmed fish. International experts give updated reviews and provide solutions to the problems......This book contains 22 chapters on some of the most important parasitic diseases in wild and farmed fish. International experts give updated reviews and provide solutions to the problems...

  8. Fish reproduction

    National Research Council Canada - National Science Library

    Rocha, Maria João; Arukwe, Augustine; Kapoor, B. G

    2008-01-01

    ... of reproductive systems is essential for such studies. Fishes comprise over 28,000 species, with a remarkable variability in morphology, physiology and environmental adaptation. Knowledge on fish reproduction is scattered across numerous sources that shows a dynamic research field. The Editors believe it to be an opportune moment for a...

  9. Fish assemblages

    Science.gov (United States)

    McGarvey, Daniel J.; Falke, Jeffrey A.; Li, Hiram W.; Li, Judith; Hauer, F. Richard; Lamberti, G.A.

    2017-01-01

    Methods to sample fishes in stream ecosystems and to analyze the raw data, focusing primarily on assemblage-level (all fish species combined) analyses, are presented in this chapter. We begin with guidance on sample site selection, permitting for fish collection, and information-gathering steps to be completed prior to conducting fieldwork. Basic sampling methods (visual surveying, electrofishing, and seining) are presented with specific instructions for estimating population sizes via visual, capture-recapture, and depletion surveys, in addition to new guidance on environmental DNA (eDNA) methods. Steps to process fish specimens in the field including the use of anesthesia and preservation of whole specimens or tissue samples (for genetic or stable isotope analysis) are also presented. Data analysis methods include characterization of size-structure within populations, estimation of species richness and diversity, and application of fish functional traits. We conclude with three advanced topics in assemblage-level analysis: multidimensional scaling (MDS), ecological networks, and loop analysis.

  10. Analysis of transect counts to monitor population size in endangered insects: the case of the el segundo blue butterfly, Euphilotes bernardino allyni.

    NARCIS (Netherlands)

    Mattoni, R; Longcore, T; Zonneveld, C.

    2001-01-01

    Before, during and after habitat restoration from 1984 to 1994, we monitored population size of the federally listed endangered El Segundo blue butterfly, Euphilotes bernardino allyni (Shields). In the subsequent formalization of a recovery plan for the species, the U.S. Fish and Wildlife Service

  11. Biotechnology applied to fish reproduction: tools for conservation.

    Science.gov (United States)

    de Siqueira-Silva, Diógenes Henrique; Saito, Taiju; Dos Santos-Silva, Amanda Pereira; da Silva Costa, Raphael; Psenicka, Martin; Yasui, George Shigueki

    2018-04-29

    This review discusses the new biotechnological tools that are arising and promising for conservation and enhancement of fish production, mainly regarding the endangered and the most economically important species. Two main techniques, in particular, are available to avoid extinction of endangered fish species and to improve the production of commercial species. Germ cell transplantation technology includes a number of approaches that have been studied, such as the transplantation of embryo-to-embryo blastomere, embryo-to-embryo differentiated PGC, larvae to larvae and embryo differentiated PGC, transplantation of spermatogonia from adult to larvae or between adults, and oogonia transplantation. However, the success of germ cell transplantation relies on the prior sterilization of fish, which can be performed at different stages of fish species development by means of several protocols that have been tested in order to achieve the best approach to produce a sterile fish. Among them, fish hybridization and triploidization, germline gene knockdown, hyperthermia, and chemical treatment deserve attention based on important results achieved thus far. This review currently used technologies and knowledge about surrogate technology and fish sterilization, discussing the stronger and the weaker points of each approach.

  12. Small nonnative fishes as predators of larval razorback suckers

    Science.gov (United States)

    Carpenter, J.; Mueller, G.A.

    2008-01-01

    The razorback sucker (Xyrauchen texanus), an endangered big-river fish of the Colorado River basin, has demonstrated no sustainable recruitment in 4 decades, despite presence of spawning adults and larvae. Lack of adequate recruitment has been attributed to several factors, including predation by nonnative fishes. Substantial funding and effort has been expended on mechanically removing nonnative game fishes, typically targeting large predators. As a result, abundance of larger predators has declined, but the abundance of small nonnative fishes has increased in some areas. We conducted laboratory experiments to determine if small nonnative fishes would consume larval razorback suckers. We tested adults of three small species (threadfin shad, Dorosoma petenense; red shiner, Cyprinella lutrensis; fathead minnow, Pimephales promelas) and juveniles of six larger species (common carp, Cyprinus carpio; yellow bullhead, Ameiurus natalis; channel catfish, Ictalurus punctatus; rainbow trout, Oncorhynchus mykiss; green sunfish, Lepomis cyanellus; bluegill, L. macrochirus). These nonnative fishes span a broad ecological range and are abundant within the historical range of the razorback sucker. All nine species fed on larval razorback suckers (total length, 9-16 mm). Our results suggest that predation by small nonnative fishes could be responsible for limiting recovery of this endangered species.

  13. 78 FR 22506 - Endangered and Threatened Wildlife and Plants; Listing as Endangered and Threatened and...

    Science.gov (United States)

    2013-04-16

    ... and Plants; Listing as Endangered and Threatened and Designation of Critical Habitat for Texas Golden... habitat determination for these two East Texas plants. The final listing rule will publish under the... reopening of the public comment period on the September 11, 2012, proposed endangered status for the Texas...

  14. 77 FR 11061 - Endangered and Threatened Wildlife and Plants; Proposed Endangered Status for the Dunes Sagebrush...

    Science.gov (United States)

    2012-02-24

    ...; 4500030113] RIN 1018-AV97 Endangered and Threatened Wildlife and Plants; Proposed Endangered Status for the... lizard in Texas. We are reopening the comment period to allow all interested parties an opportunity to... date. ADDRESSES: Document availability: You may obtain copies of the proposed rule, the ``Texas...

  15. Balancing urban development and endangered species: The coachella valley habitat conservation plan

    Science.gov (United States)

    Beatley, Timothy

    1992-01-01

    Habitat conservation plans (HCPs) permitted under Section 10(A) of the federal Endangered Species Act, have been increasingly used to overcome conflicts between urban development and species conservation. This article profiles one such HCP, the Coachella Valley (CA) Fringe-Toed Lizard Habitat Conservation Plan. The second HCP officially approved by the US Fish and Wildlife Service, the Coachella Valley case is frequently cited as a model for resolving conservation and development conflicts. The article begins with a discussion of the use of HCPs, and then provides a detailed discussion of Coachella Valley experience, its history, specific provisions, and success to date. A final section examines whether Coachella Valley does in fact represent a positive model. It is argued that the HCP has been less than fully successful and leaves unresolved a series of fundamental ethical and policy questions concerning the protection of endangered species.

  16. 77 FR 16554 - Endangered and Threatened Wildlife and Plants; Receipt of Applications for Incidental Take...

    Science.gov (United States)

    2012-03-21

    ... nesting habitat of endangered and threatened sea turtle species in Sarasota County, Florida, for the... nesting habitat of the threatened loggerhead sea turtle (Caretta caretta), endangered leatherback sea turtle (Dermochelys coriacea), endangered green sea turtle (Chelonia mydas), endangered hawksbill sea...

  17. Spawning and hatching of endangered Gila Chub in captivity

    Science.gov (United States)

    Schultz, Andrew A.; Bonar, Scott A.

    2016-01-01

    Information on reproductive characteristics of the endangered Gila Chub Gila intermedia is largely limited and qualitative, and culture techniques and requirements are virtually unknown. Here we provide the first published data on spawning and selected reproductive and developmental characteristics of Gila Chub. Fish were brought to the laboratory in March 2003 from Sabino Creek, Arizona (12.3°C). Fish were then warmed slowly and spawned at 14.9°C, 10 d after collection. Following this initial spawning, Gila Chub spawned consistently in the laboratory without hormonal, chemical, photoperiod, temperature, or substrate manipulation during all times of the year. Spawns were noted at temperatures ranging from about 15°C to 26°C; however, we noted that Gila Chub spawned less frequently at temperatures above 24°C. Multiple spawning attempts per year per individual are probable. There was a strong, inverse relationship between time to hatch and incubation temperature. The hatch rate of eggs was high (mean = 99.43%), and larval Gila Chub accepted a variety of natural and formulated diets at first feeding. The future of Gila Chub may someday depend in part on hatchery propagation to provide specimens for restocking formerly occupied habitats and establishing refuge populations. Information from our study can aid future efforts to successfully spawn and rear Gila Chub and related species.

  18. One Fish, Two Fish, Redfish, You Fish!

    Science.gov (United States)

    White, Katherine; Timmons, Maryellen; Medders, Paul

    2011-01-01

    The recreational fishing activity presented in this article provides a hands-on, problem-based experience for students; it unites biology, math, economics, environmental policy, and population dynamics concepts. In addition, the activity allows students to shape environmental policy in a realistic setting and evaluate their peers' work. By…

  19. Ecosystem studies, endangered species survey - Gibson Dome and Elk Ridge study areas, Paradox Basin, Utah

    International Nuclear Information System (INIS)

    1983-04-01

    This report is published as a product of the National Waste Terminal Storage (NWTS) Program. The objective of this program is the development of terminal waste storage facilities in deep stable geologic formations for high-level nuclear wastes, including spent fuel elements from commercial power reactors and transuranic nuclear waste for which the federal government is responsible. This report is part of the location and site characterization phase and contains threatened and endangered species information for the Gibson Dome and Elk Ridge study areas of the Paradox Region. The threatened and endangered species information was obtained through site surveys designed and implemented by area experts. The site surveys were performed during the period late summer 1981 - spring 1982 in the Gibson Dome and Elk Ridge Study Areas. No threatened or endangered species were identified in either Lavender or Davis canyons. Additional studies at the borehole locations in Beef Basin did identify the nearest occurrence of a species proposed for endangered status (Astragalus monumentalis, a monument milkvetch, member of the legume family). The species was identified approximately 160 to 300 m (500 to 1000 ft) from a hydro testing drill site. Consequently, construction and operation activity should not cause any adverse impacts. This report will be used to satisfy Section 7 requirements of the Endangered Species Act (PL 93-205 as amended) and to allow the United States Fish and Wildlife Service to verify that no protected species are subject to disturbance as the result of project activities occurring in the Gibson Dome and Elk Ridge study areas

  20. 77 FR 34463 - Endangered and Threatened Wildlife and Plants; Listing 38 Species on Molokai, Lanai, and Maui as...

    Science.gov (United States)

    2012-06-11

    .... (C). Canavalia pubescens awikiwiki Proposed--Endangered Proposed. (C). Cyanea asplenifolia haha Proposed--Endangered Proposed. (C). Cyanea duvalliorum haha Proposed--Endangered... Proposed. Cyanea horrida haha nui Proposed--Endangered... Proposed. Cyanea kunthiana haha Proposed--Endangered Proposed. (C...

  1. Alabama ESI: FISH (Fish Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for marine, estuarine, and freshwater fish species in Alabama. Vector polygons in this data set represent...

  2. Maryland ESI: FISH (Fish Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for marine, estuarine, anadromous, and freshwater fish species in Maryland. Vector polygons in this data...

  3. Hawaii ESI: FISH (Fish Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for reef, marine, estuarine, and native stream fish species in coastal Hawaii. Vector polygons in this data...

  4. Virginia ESI: FISH (Fish Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for marine, estuarine, anadromous, and brackishwater fish species in Virginia. Vector polygons in this data...

  5. Louisiana ESI: FISH (Fish Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for freshwater (inland) fish species in coastal Louisiana. Vector polygons represent water-bodies and other...

  6. The Endangered Species Act: The Law of Last Resort.

    Science.gov (United States)

    Clearing, 1991

    1991-01-01

    Discussed is the possibility that the salmon found in the Columbia River (Idaho) is an endangered species. A list of threatened or endangered animal species in the Pacific Northwest is included. Activities that deal with the topics of diversity, endangered species, and what is being done about them are provided. (KR)

  7. 75 FR 11863 - Endangered Species; File No. 15135

    Science.gov (United States)

    2010-03-12

    ... take threatened and endangered sea turtles for purposes of scientific research. DATES: Written... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XV11 Endangered... Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the...

  8. 76 FR 77781 - Endangered Species; File No. 15802

    Science.gov (United States)

    2011-12-14

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR 222-226). On July 28, 2011 (76 FR 45230), notice was... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA603 Endangered...

  9. 76 FR 19052 - Endangered Species; File No. 14344

    Science.gov (United States)

    2011-04-06

    ...-named organization. The requested permit has been issued under the authority of the Endangered Species..., importing, and exporting of endangered and threatened species (50 CFR parts 222-226). The permit authorizes... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA340 Endangered...

  10. 76 FR 66042 - Endangered Species; File No. 1551

    Science.gov (United States)

    2011-10-25

    ... granted under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq... endangered or threatened species, and (3) is consistent with the purposes and policies set forth in section 2... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA785 Endangered...

  11. 75 FR 26715 - Endangered Species; File No. 1596

    Science.gov (United States)

    2010-05-12

    ... 29, 2009 (74 FR 38585), is requested under the authority of the Endangered Species Act of 1973, as... endangered and threatened species (50 CFR 222-226). Permit No. 1596-02 authorizes the SWFSC to capture... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XW36 Endangered...

  12. 76 FR 32144 - Endangered Species; File No. 15677

    Science.gov (United States)

    2011-06-03

    ... authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR parts..., (2) will not operate to the disadvantage of such endangered or threatened species, and (3) is...

  13. 78 FR 22517 - Endangered Species; File No. 16549

    Science.gov (United States)

    2013-04-16

    ... applicant. The requested permit has been issued under the authority of the Endangered Species Act of 1973... exporting of endangered and threatened species (50 CFR parts 222-226). The Permit Holder is issued a five... to the disadvantage of such endangered or threatened species, and (3) is consistent with the purposes...

  14. 75 FR 78227 - Endangered Species; File No. 14400

    Science.gov (United States)

    2010-12-15

    ... permit has been issued under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S... black abalone, a species listed as endangered on February 13, 2009. The objective of this monitoring is...) will not operate to the disadvantage of such endangered or threatened species, and (3) is consistent...

  15. 75 FR 13256 - Endangered Species; File No. 14176

    Science.gov (United States)

    2010-03-19

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of..., and exporting of endangered and threatened species (50 CFR 222-226). The applicant is seeking a five... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XV28 Endangered...

  16. 77 FR 57559 - Endangered Species; File No. 13330

    Science.gov (United States)

    2012-09-18

    ... been granted under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531... endangered or threatened species, and (3) is consistent with the purposes and policies set forth in section 2... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XB144 Endangered...

  17. 78 FR 5779 - Endangered Species; File No. 16248

    Science.gov (United States)

    2013-01-28

    ... Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR parts 222-226). The... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC322 Endangered...

  18. 76 FR 48146 - Endangered Species; File No. 1551

    Science.gov (United States)

    2011-08-08

    ... subject modification to Permit No. 1551- 02 is requested under the authority of the Endangered Species Act... exporting of endangered and threatened species (50 CFR 222-226). Permit No. 1551, issued on July 24, 2008... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA620 Endangered...

  19. 77 FR 21751 - Endangered Species; File No. 16645

    Science.gov (United States)

    2012-04-11

    ... Endangered Species Act of 1973, as amended (ESA). The permit application is for the incidental take of ESA... appointment in the following office: Endangered Species Division, Office of Protected Resources, NMFS, 1315.... Mail: Submit written comments to Endangered Species Division, Office of Protected Resources, NMFS, 1315...

  20. 78 FR 38013 - Endangered Species; File No. 15661

    Science.gov (United States)

    2013-06-25

    ... authority of the Endangered Species Act of 1973, as amended (16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR 222-226). Permit... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA425 Endangered...

  1. 78 FR 17355 - Endangered Species; File No. 17787

    Science.gov (United States)

    2013-03-21

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR parts 222-226). The applicant proposes to gather life... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC576 Endangered...

  2. 76 FR 51945 - Endangered Species; File No. 16548

    Science.gov (United States)

    2011-08-19

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR parts 222-226). The Springfield Science Museum is... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA648 Endangered...

  3. 76 FR 18725 - Endangered Species; File No. 16174

    Science.gov (United States)

    2011-04-05

    ... the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR 222... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA348 Endangered...

  4. 76 FR 40699 - Endangered Species; File No. 16229

    Science.gov (United States)

    2011-07-11

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR 222-226). The North Carolina Zoo [File No. 16229] is... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA516 Endangered...

  5. 76 FR 45781 - Endangered Species; File No. 15552

    Science.gov (United States)

    2011-08-01

    ... Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR parts 222-226). The five... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA601 Endangered...

  6. 78 FR 41034 - Endangered Species; File No. 18102

    Science.gov (United States)

    2013-07-09

    ... applied in due form for a permit pursuant to the Endangered Species Act of 1973, as amended (ESA). The... also available upon written request or by appointment in the following office: Endangered Species... written comments to Endangered Species Conservation Division, Office of Protected Resources, NMFS, 1315...

  7. 76 FR 45230 - Endangered Species; File No. 15802

    Science.gov (United States)

    2011-07-28

    ... INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of 1973, as... of endangered and threatened species (50 CFR 222-226). The applicant proposes to monitor smalltooth... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA603 Endangered...

  8. 78 FR 3882 - Endangered Species; File No. 13543

    Science.gov (United States)

    2013-01-17

    ... requested under the authority of the Endangered Species Act of 1973, as amended (16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XJ40 Endangered...

  9. 78 FR 57132 - Endangered Species; File No. 16230

    Science.gov (United States)

    2013-09-17

    ... authorization for incidental take of sea turtles listed under the Endangered Species Act (ESA) associated with..., importing, and exporting of endangered and threatened species (50 CFR parts 222-226). This permit authorizes... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC289 Endangered...

  10. 78 FR 15706 - Endangered Species; File No. 17316

    Science.gov (United States)

    2013-03-12

    ... Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR parts 222-226). The permit... endangered or threatened species, and (3) is consistent with the purposes and policies set forth in section 2...

  11. 77 FR 58812 - Endangered Species; File No. 16733

    Science.gov (United States)

    2012-09-24

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR 222-226). The SEFSC requests a five-year permit to... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC253 Endangered...

  12. 77 FR 31586 - Endangered Species; File No. 16556

    Science.gov (United States)

    2012-05-29

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR parts 222-226). The NEFSC requests a five-year permit... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC037 Endangered...

  13. Save Our Species: Protecting Endangered Species from Pesticides.

    Science.gov (United States)

    Environmental Protection Agency, Washington, DC.

    This full-size poster profiles 11 wildlife species that are endangered. Color illustrations of animals and plants are accompanied by narrative describing their habitats and reasons for endangerment. The reverse side of the poster contains information on the Endangered Species Act, why protecting endangered and threatened species is important, how…

  14. 76 FR 77780 - Endangered Species; File No. 10022

    Science.gov (United States)

    2011-12-14

    ... been granted under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531... endangered or threatened species, and (3) is consistent with the purposes and policies set forth in section 2... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA867 Endangered...

  15. 75 FR 21601 - Endangered Species; File No. 14604

    Science.gov (United States)

    2010-04-26

    ... authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR parts... not operate to the disadvantage of such endangered or threatened species, and (3) is consistent with...

  16. 75 FR 53278 - Endangered Species; File No. 14759

    Science.gov (United States)

    2010-08-31

    ... authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the taking, importing, and exporting of endangered and threatened species (50 CFR parts...) was applied for in good faith; (2) will not operate to the disadvantage of such endangered species...

  17. 77 FR 30261 - Endangered Species; File No. 16306

    Science.gov (United States)

    2012-05-22

    ..., importing, and exporting of endangered and threatened species (50 CFR parts 222-226). The Maine Department... to the disadvantage of such endangered or threatened species, and (3) is consistent with the purposes... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA712 Endangered...

  18. 40 CFR 230.30 - Threatened and endangered species.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Threatened and endangered species. 230... Impacts on Biological Characteristics of the Aquatic Ecosystem § 230.30 Threatened and endangered species. (a) An endangered species is a plant or animal in danger of extinction throughout all or a...

  19. 78 FR 31519 - Endangered Species; File No. 13543

    Science.gov (United States)

    2013-05-24

    ... organization. The requested modification has been granted under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR 222-226). Permit No. 13543 authorizes the permit... disadvantage of such endangered or threatened species, and (3) is consistent with the purposes and policies set...

  20. 77 FR 65673 - Endangered Species; File No. 16248

    Science.gov (United States)

    2012-10-30

    ... subject permit is requested under the authority of the Endangered Species Act of 1973, as amended (ESA; 16... endangered and threatened species (50 CFR 222-226). The Riverbanks Zoo and Garden is requesting a permit to... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC322 Endangered...

  1. 78 FR 2659 - Endangered Species; File No. 16645

    Science.gov (United States)

    2013-01-14

    ... written request or by appointment in the following office: Endangered Species Conservation Division... GA DNR. The requested permit has been issued under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR parts 222-226). The permit authorizes take of ESA...

  2. 78 FR 39258 - Endangered Species; File No. 18069

    Science.gov (United States)

    2013-07-01

    .... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of... exporting of endangered and threatened species (50 CFR parts 222-226). The applicant requests a five-year... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC725 Endangered...

  3. 78 FR 50396 - Endangered Species; File No. 17405

    Science.gov (United States)

    2013-08-19

    ... permit has been issued under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S... to the disadvantage of such endangered or threatened species, and (3) is consistent with the purposes... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC519 Endangered...

  4. 77 FR 55194 - Endangered Species; File No. 17095

    Science.gov (United States)

    2012-09-07

    .... The requested permit has been issued under the authority of the Endangered Species Act of 1973, as... of endangered and threatened species (50 CFR parts 222-226). The Permit Holder is issued a five-year... operate to the disadvantage of such endangered or threatened species, and (3) is consistent with the...

  5. 75 FR 61133 - Endangered Species; File No. 14176

    Science.gov (United States)

    2010-10-04

    .... The requested permit has been issued under the authority of the Endangered Species Act of 1973, as... of endangered and threatened species (50 CFR parts 222-226). The applicant is authorized to conduct a... such endangered or threatened species; and (3) is consistent with the purposes and policies set forth...

  6. Threatened and Endangered Species Habitat Management Plan for Los Alamos National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Hathcock, Charles Dean [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Keller, David Charles [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Thompson, Brent E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-10-16

    Los Alamos National Laboratory’s (LANL) Threatened and Endangered Species Habitat Management Plan (HMP) fulfills a commitment made to the U.S. Department of Energy (DOE) in the “Final Environmental Impact Statement for the Dual-Axis Radiographic Hydrodynamic Test Facility Mitigation Action Plan” (DOE 1996). The HMP received concurrence from the U.S. Fish and Wildlife Service (USFWS) in 1999 (USFWS consultation numbers 2-22-98-I-336 and 2-22-95-I-108). This 2017 update retains the management guidelines from the 1999 HMP for listed species, and updates some descriptive information.

  7. Observations on burrowing rates and comments on host specificity in the endangered mussel Lampsilis higginsi

    Science.gov (United States)

    Sylvester, J.R.; Holland, L.E.; Kamer, T.K.

    1984-01-01

    In preliminary laboratory studies, the endangered mussel Lampsilis higginsi was unable to burrow into rocky substrates, but did burrow into substrates comprised of silt, clay, sand, and/or pebble-gravel. Burrowing times were shortest in silt and longest in pebble-gravel. As judged by longevity of glochidial infection, walleye (Stizostedion vitreum) and largemouth bass (Micropterus salmoides) may be suitable hosts for the parasitic stage. When glochidia were placed in water without host fish, half had died after 48 hours, and all had died after 72 hours. (DBO).

  8. Fishing Access Areas

    Data.gov (United States)

    Vermont Center for Geographic Information — The Vermont Fish & Wildlife Department maintains developed fishing access areas. These sites provide public access to waters in Vermont for shore fishing...

  9. Columbia River basin fish and wildlife program strategy for salmon

    International Nuclear Information System (INIS)

    Ruff, J.; Fazio, J.

    1993-01-01

    Three species of Snake River salmon have been listed as threatened or endangered under the federal Endangered Species Act. In response, the Northwest Power Planning Council worked with the states of Idaho, Montana, Oregon and Washington, Indian tribes, federal agencies and interest groups to address the status of Snake River salmon runs in a forum known as the Salmon Summit. The Summit met in 1990 and 1991 and reached agreement on specific, short-term actions. When the Summit disbanded in April 1991, responsibility for developing a regional recovery plan for salmon shifted to the Council. The Council responded with a four-phased process of amending its Columbia River Basin Fish and Wildlife Program. The first three phases. completed in September 1992, pertain to salmon and steelhead. Phase four, scheduled for completion in October 1993, will take up issues of resident fish and wildlife. This paper deals with the first three phases, collectively known as Strategy for Salmon

  10. Do bacteria, not fish, produce 'fish kairomone'?

    NARCIS (Netherlands)

    Ringelberg, J.; Van Gool, E.

    1998-01-01

    Fish-associated chemicals enhance phototactic downward swimming in Daphnia. If perch were treated with the antibiotic ampicillin, this enhancement was significantly decreased. Therefore, not fish, but bacteria associated with fish, seem to produce this kairomone. [KEYWORDS: Diel vertical migration;

  11. Behavioral observations of the endangered Rio Grande silvery minnow in a conservation aquaculture facility

    Directory of Open Access Journals (Sweden)

    Tave Douglas

    2018-03-01

    Full Text Available A major reason why conservation aquaculture is needed to improve the success of aquaculture-assisted fisheries is that traditional production aquaculture produces fish with mal-adaptive behaviors. These behaviors can be produced via domestication and culture techniques, and preventing these mal-adaptive behaviors requires integrating improvements in genetic management and culture protocols. The genetic protocols needed to minimize hatchery-induced genetic changes have received considerable attention, but changing the way fish are raised has received less effort. Conservation aquaculture cultures fish in environments that resemble their native habitats so that when stocked, they behave like wild fish rather than hatchery fish. A purpose built-conservation aquaculture facility can also be used to learn about a species’ behavior and how it reacts to changes in the environment, something which can be difficult or expensive to study in the wild. These observations can then be used to help direct both propagation and recovery management. This paper provides the rationale for why genetic management, culture systems, and management practices need to be altered to produce fish that are behaviorally similar to wild fish for aquaculture-assisted fisheries programs. It then provides a description of some of the behaviors of the endangered Rio Grande silvery minnow Hybognathus amarus that were observed at the Los Lunas Silvery Minnow Refugium, a purpose-built conservation aquaculture facility, and explains how some of these behaviors can be used in culture and recovery management. Behaviors described are: schooling; predator avoidance; feeding behavior; use of vegetation for cover and predator avoidance; habitat use by bottom substrate; location in the water column; upstream movement via a fish ladder; movement upstream in a high-velocity channel; response to changes in water level; spawning behavior; seine avoidance; and Kaah-chee-nyee Srkaash, a behavior

  12. Environmental Politics and the Endangered Species Act.

    Science.gov (United States)

    Sahr, David

    2000-01-01

    Explores the controversial issue of the Endangered Species Act (ESA) discussing the Act and the scope of the extinction problem. Reviews the arguments for and against the ESA, addresses the tactics that have been used in the political struggle over the ESA, and highlights the future of the ESA. Includes teaching activities. (CMK)

  13. Genetic diversity among endangered rare Dalbergia ...

    African Journals Online (AJOL)

    Genetic diversity among endangered rare Dalbergia cochinchinensis (Fabaceae) genotypes in Vietnam revealed by random amplified polymorphic DNA (RAPD) ... The number of amplified fragments varied from 1 (OPR15, OPB05, RA142, OPR08, UBC348, OPE14 and OPO04) to 8 (OPP19) and their sizes ranged from 250 ...

  14. Monitoring endangered freshwater biodiversity using environmental DNA

    DEFF Research Database (Denmark)

    Thomsen, Philip Francis; Kielgast, Jos; Iversen, Lars Lønsmann

    2012-01-01

    Freshwater ecosystems are among the most endangered habitats on Earth, with thousands of animal species known to be threatened or already extinct. Reliable monitoring of threatened organisms is crucial for data-driven conservation actions but remains a challenge owing to nonstandardized methods t...

  15. Does the endangered Knysna seahorse, Hippocampus capensis ...

    African Journals Online (AJOL)

    Abstract. The Knysna seahorse, Hippocampus capensis, is an endangered teleost confined to three South African estuaries. Its abundance within these systems is low and distributions are patchy. Consequently, monitoring population sizes is labour- intensive. The aim of this study was to establish if Knynsa seahorses are ...

  16. Fire and the endangered Indiana bat

    Science.gov (United States)

    Matthew B. Dickinson; Michael J. Lacki; Daniel R. Cox

    2009-01-01

    Fire and Indiana bats (Myotis sodalis) have coexisted for millennia in the central hardwoods region, yet past declines in populations of this endangered species, and the imperative of fire use in oak silviculture and ecosystem conservation, call for an analysis of both the risks and opportunities associated with using fires on landscapes in...

  17. Generation of viable progeny from dead brooders of endangered catfish Clarias magur (Hamilton, 1822

    Directory of Open Access Journals (Sweden)

    Sullip Kumar Majhi

    2017-10-01

    Full Text Available The obligatory air-breathing catfish Clarias magur is a prime candidate for aquaculture owing to its unique taste, high growth rate, and hardy nature. However, recently the IUCN has listed the species under the endangered category because the population has critically declined in the wild. The sexually mature C. magur brooders are often collected from their natural habitats for seed production in captivity. In many cases, the brooder dies due to handling injuries or confinement stress. In this study, we demonstrated that viable progeny could be generated from freshly dead sexually mature C. magur. Three hours after death, the gonads were excised, macroscopically examined and gamete viability was evaluated. Artificial fertilization was performed by mixing the sperm suspension with the eggs. Water was added after 1 min of mixing to activate the fertilization process. We observed 85%-93% fertilization success from gametes derived from dead donors as opposed to 90%-95% from those derived from live control donors. The embryos showed normal development and resulted in the generation of 88%-92% viable progeny, which was similar to the progeny derived from control donors (92%-93%. The results obtained in this study will have profound implications in enhancing the seed production of endangered C. magur and could potentially be applied to other key commercially or endangered fish species. Keywords: Biological sciences, Developmental biology, Zoology

  18. Fish irradiation

    International Nuclear Information System (INIS)

    Kovacs, J.; Tengumnuay, C.; Juangbhanich, C.

    1970-01-01

    Chub-mackerel was chosen for the study because they are the most common fish in Thailand. Preliminary investigations were conducted to determine the maximum radiation dose of gamma-rays by organoleptic tests. The samples were subjected to radiation at various doses up to 4 Mrad. Many experiments were conducted using other kinds of fish. The results showed that 1 Mrad would be the maximum acceptable dose for fish. Later, the influence of the radiation dose from 0.1-1 Mrad was studied in order to find the optimum acceptable dose for preservation of fish without off-flavour. For this purpose, the Hedonic scale was used. It was found that 0.2 and 0.5 Mrad gave the best result on Chub mackerel. The determinations of optimum dose, organoleptic, microbiological and trimethylamine content changes were done. The results showed that Chub mackerel irradiated at 0.2, 0.5 and 1 Mrad stored at 3 0 C for 71 days were still acceptable, on the contrary the untreated samples were found unacceptable at 14 days. The trimethylamine increment was significantly higher in the untreated samples. At 15 days storage, trimethylamine in the non-irradiated Chub-mackerel was about 10 times higher than the irradiated ones. At 51 and 79 days storage, about 13 times higher in the control samples than the irradiated samples except 0.1 Mrad. Only 2 times higher was found for the 0.1 Mrad. The microbiological results showed that the irradiation above 0.2 Mrad gave favorable extension of shelf-life of fish

  19. Bottom-up effects of a no-take zone on endangered penguin demographics.

    Science.gov (United States)

    Sherley, Richard B; Winker, Henning; Altwegg, Res; van der Lingen, Carl D; Votier, Stephen C; Crawford, Robert J M

    2015-07-01

    Marine no-take zones can have positive impacts for target species and are increasingly important management tools. However, whether they indirectly benefit higher order predators remains unclear. The endangered African penguin (Spheniscus demersus) depends on commercially exploited forage fish. We examined how chick survival responded to an experimental 3-year fishery closure around Robben Island, South Africa, controlling for variation in prey biomass and fishery catches. Chick survival increased by 18% when the closure was initiated, which alone led to a predicted 27% higher population compared with continued fishing. However, the modelled population continued to decline, probably because of high adult mortality linked to poor prey availability over larger spatial scales. Our results illustrate that small no-take zones can have bottom-up benefits for highly mobile marine predators, but are only one component of holistic, ecosystem-based management regimes. © 2015 The Author(s) Published by the Royal Society. All rights reserved.

  20. Infectious diseases of fishes in the Salish Sea

    Science.gov (United States)

    Hershberger, Paul; Rhodes, Linda; Kurath, Gael; Winton, James

    2013-01-01

    As in marine regions throughout other areas of the world, fishes in the Salish Sea serve as hosts for many pathogens, including nematodes, trematodes, protozoans, protists, bacteria, viruses, and crustaceans. Here, we review some of the better-documented infectious diseases that likely contribute to significant losses among free-ranging fishes in the Salish Sea and discuss the environmental and ecological factors that may affect the population-level impacts of disease. Demonstration of these diseases and their impacts to critical and endangered resources provides justification to expand pathogen surveillance efforts and to incorporate disease forecasting and mitigation tools into ecosystem restoration efforts.

  1. Microbiological spoilage of fish and fish products

    DEFF Research Database (Denmark)

    Gram, Lone; Huss, Hans Henrik

    1996-01-01

    Spoilage of fresh and lightly preserved fish products is caused by microbial action. This paper reviews the current knowledge in terms of the microbiology of fish and fish products with particular emphasis on identification of specific spoilage bacteria and the qualitative and quantitative...... biochemical indicators of spoilage. Shewanzella putrefaciens and Pseudomonas spp. are the specific spoilage bacteria of iced fresh fish regardless of the origin of the fish. Modified atmosphere stored marine fish from temperate waters are spoiled by the CO2 resistant Photobacterium phosphoreum whereas Gram......- positive bacteria are likely spoilers of CO2 packed fish from fresh or tropical waters. Fish products with high salt contents may spoil due to growth of halophilic bacteria (salted fish) or growth of anaerobic bacteria and yeasts (barrel salted fish). Whilst the spoilage of fresh and highly salted fish...

  2. Cattle grazing and fish recovery on US federal lands: can social-ecological systems science help?

    Science.gov (United States)

    Susan Charnley; Hannah Gosnell; Kendra L Wendel; Mary M Rowland; Michael J Wisdom

    2018-01-01

    In the western US, grazing management on federal lands containing habitat for fish species listed under the US Endangered Species Act (ESA) has sparked social conflict and litigation for decades. To date, the problem has been addressed through a top-down environmental governance system, but rangeland managers and grazing permittees now believe there is a need for more...

  3. Toward an integrated classification of ecosystems: Defining opportunities for managing fish and forest health

    Science.gov (United States)

    Bruce E. Rieman; Danny C. Lee; Russell F. Thurow; Paul F. Hessburg; James R. Sedell

    2000-01-01

    Many of the aquatic and terrestrial ecosystems of the Pacific Northwest United States have been simplified and degraded in part through past land-management activities. Recent listings of fishes under the Endangered Species Act and major new initiatives for the restoration of forest health have precipitated contentious debate among managers and conservation interests...

  4. 19 CFR 12.26 - Importations of wild animals, fish, amphibians, reptiles, mollusks, and crustaceans; prohibited...

    Science.gov (United States)

    2010-04-01

    ..., reptiles, mollusks, and crustaceans; prohibited and endangered and threatened species; designated ports of..., Birds, and Insects § 12.26 Importations of wild animals, fish, amphibians, reptiles, mollusks, and... crustacea), amphibians, reptiles, or the offspring or eggs of any of the foregoing which the Secretary of...

  5. Spatial heterogeneity in the Mediterranean Biodiversity Hotspot affects barcoding accuracy of its freshwater fishes

    Czech Academy of Sciences Publication Activity Database

    Geiger, M. F.; Herder, F.; Monaghan, M. T.; Almada, V.; Barbieri, R.; Bariche, M.; Berrebi, P.; Bohlen, Jörg; Casal-Lopez, M.; Delmastro, G. B.; Denys, G. P. J.; Dettai, A.; Doadrio, I.; Kalogianni, E.; Kärst, H.; Kottelat, M.; Kovačič, M.; Laporte, M.; Lorenzoni, M.; Marčič, Z.; Özulug, M.; Percides, A.; Perea, S.; Persat, H.; Porcelotti, S.; Puzzi, C.; Robalo, J.; Šanda, R.; Schneider, M.; Šlechtová, Vendula; Stoumboudi, M.; Walter, S.; Freyhof, J.

    2014-01-01

    Roč. 14, č. 6 (2014), s. 1210-1221 ISSN 1755-098X Institutional support: RVO:67985904 Keywords : DNA barcoding * evolutionary distinct and globally endangered score * fish Subject RIV: EG - Zoology Impact factor: 3.712, year: 2014

  6. Occupancy and abundance of the endangered yellowcheek darter in Arkansas

    Science.gov (United States)

    Magoulick, Daniel D.; Lynch, Dustin T.

    2015-01-01

    The Yellowcheek Darter (Etheostoma moorei) is a rare fish endemic to the Little Red River watershed in the Boston Mountains of northern Arkansas. Remaining populations of this species are geographically isolated and declining, and the species was listed in 2011 as federally endangered. Populations have declined, in part, due to intense seasonal stream drying and inundation of lower reaches by a reservoir. We used a kick seine sampling approach to examine distribution and abundance of Yellowcheek Darter populations in the Middle Fork and South Fork Little Red River. We used presence data to estimate occupancy rates and detection probability and examined relationships between Yellowcheek Darter density and environmental variables. The species was found at five Middle Fork and South Fork sites where it had previously been present in 2003–2004. Occupancy rates were >0.6 but with wide 95% CI, and where the darters occurred, densities were typical of other Ozark darters but highly variable. Detection probability and density were positively related to current velocity. Given that stream drying has become more extreme over the past 30 years and anthropogenic threats have increased, regular monitoring and active management may be required to reduce extinction risk of Yellowcheek Darter populations.

  7. A model for improving endangered species recovery programs

    Science.gov (United States)

    Miller, Brian; Reading, Richard; Conway, Courtney; Jackson, Jerome A.; Hutchins, Michael; Snyder, Noel; Forrest, Steve; Frazier, Jack; Derrickson, Scott

    1994-09-01

    This paper discusses common organizational problems that cause inadequate planning and implementation processes of endangered species recovery across biologically dissimilar species. If these problems occur, even proven biological conservation techniques are jeopardized. We propose a solution that requires accountability in all phases of the restoration process and is based on cooperative input among government agencies, nongovernmental conservation organizations, and the academic community. The first step is formation of a task-oriented recovery team that integrates the best expertise into the planning process. This interdisciplinary team should be composed of people whose skills directly address issues critical for recovery. Once goals and procedures are established, the responsible agency (for example, in the United States, the US Fish and Wildlife Service) could divest some or all of its obligation for implementing the plan, yet still maintain oversight by holding implementing entities contractually accountable. Regular, periodic outside review and public documentation of the recovery team, lead agency, and the accomplishments of implementing bodies would permit evaluation necessary to improve performance. Increased cooperation among agency and nongovernmental organizations provided by this model promises a more efficient use of limited resources toward the conservation of biodiversity.

  8. Chinese Trader Perceptions on Sourcing and Consumption of Endangered Seafood

    Directory of Open Access Journals (Sweden)

    Michael Fabinyi

    2017-06-01

    Full Text Available Growing trade networks through globalization have expanded governance of local environments to encompass multiple scales. The governing role of market actors, such as traders and consumers in importing countries, has been recognized and embraced for sustainable seafood sourcing and trade. The perceptions that affect the conduct of these actors are a potential influence on governance of distal environments. In this paper we investigate the perceptions of sea cucumber traders in China. Sea cucumbers are an important global fishery commodity predominantly traded to China, the world's largest seafood market, and seven traded species are endangered globally. We examine what traders and consumers in China perceive as important issues in seafood markets, and where they perceive the responsibility for sustainable fisheries to lie, to interpret what scope there is for sustainability to become an important issue in China's seafood markets. We find that clusters of perceptions about cultural status, quality, health and food safety, and country of origin influence decisions that consumers make. These norms are rooted in sociocultural practice and drive current trade strategies. While traders do want to mitigate risks and secure supplies, food safety, product quality and country of origin are viewed as more important concerns than stock sustainability. Responsibility for sustainable fishing is perceived to be that of national governments in production countries. Trading practices and consumer perceptions together pose a serious challenge to sustainable seafood markets, further confounded by clandestine cross-border gray trade into China.

  9. Agency interaction at the Savannah River Plant under the Endangered Species Act

    International Nuclear Information System (INIS)

    Mackey, H.E. Jr.

    1985-01-01

    The 300 square mile Savannah River Plant (SRP) offers a variety of protected habitats for endangered species including the alligator (resident), red-cockaded woodpecker (resident), short-nose sturgeon (migratory), and wood stork (fish-forager). The most recent of these four species to be listed by the US Fish and Wildlife Service (US FWS) is the wood stork. It had been observed prior to 1983 as an infrequent forager in the SRP Savannah River Swamp which adjoins SRP on the south and southwest. In anticipation of its listing as an endangered species, DOE-SR requested in the spring of 1983 that the Savannah River Ecology Laboratory, University of Georgia, conduct field surveys and studies of the nearest colony of wood storks to SRP (the Birdsville colony in north-central Georgia). The objective of these studies was to determine potential effects of the flooding of the Steel Creek swamp area with cooling water from L-Reactor. L-Reactor, which is proposed for restart, has not been operated since 1968. The survey found that wood storks forage in the Steel Creek delta swamp area of the Savannah River at SRP. Based on the numbers of storks at various foraging locations, sites at SRP ranked higher than non-SRP sites during the pre-fledging phase of the colony. Cold flow testing of L-Reactor also demonstrated that foraging sites in the Steel Creek delta would be unavailable during L-Reactor operation because of increased water levels

  10. Fish gelatin.

    Science.gov (United States)

    Boran, Gokhan; Regenstein, Joe M

    2010-01-01

    Gelatin is a multifunctional ingredient used in foods, pharmaceuticals, cosmetics, and photographic films as a gelling agent, stabilizer, thickener, emulsifier, and film former. As a thermoreversible hydrocolloid with a narrower gap between its melting and gelling temperatures, both of which are below human body temperature, gelatin provides unique advantages over carbohydrate-based gelling agents. Gelatin is mostly produced from pig skin, and cattle hides and bones. Some alternative raw materials have recently gained attention from both researchers and the industry not just because they overcome religious concerns shared by Jews and Muslims but also because they provide, in some cases, technological advantages over mammalian gelatins. Fish skins from a number of fish species are among the other sources that have been comprehensively studied as sources for gelatin production. Fish skins have a significant potential for the production of high-quality gelatin with different melting and gelling temperatures over a much wider range than mammalian gelatins, yet still have a sufficiently high gel strength and viscosity. Gelatin quality is industrially determined by gel strength, viscosity, melting or gelling temperatures, the water content, and microbiological safety. For gelatin manufacturers, yield from a particular raw material is also important. Recent experimental studies have shown that these quality parameters vary greatly depending on the biochemical characteristics of the raw materials, the manufacturing processes applied, and the experimental settings used for quality control tests. In this review, the gelatin quality achieved from different fish species is reviewed along with the experimental procedures used to determine gelatin quality. In addition, the chemical structure of collagen and gelatin, the collagen-gelatin conversion, the gelation process, and the gelatin market are discussed. Copyright © 2010 Elsevier Inc. All rights reserved.

  11. Fish Immunoglobulins

    OpenAIRE

    Sara Mashoof; Michael F. Criscitiello

    2016-01-01

    The B cell receptor and secreted antibody are at the nexus of humoral adaptive immunity. In this review, we summarize what is known of the immunoglobulin genes of jawed cartilaginous and bony fishes. We focus on what has been learned from genomic or cDNA sequence data, but where appropriate draw upon protein, immunization, affinity and structural studies. Work from major aquatic model organisms and less studied comparative species are both included to define what is the rule for an immunoglob...

  12. Fish cognition

    OpenAIRE

    Bshary, Redouan; Brown, Culum

    2017-01-01

    The central nervous system, and the brain in particular, is one of the most remarkable products of evolution. This system allows an individual to acquire, process, store and act on information gathered from the environment. The resulting flexibility in behavior beyond genetically coded strategies is a prime adaptation in animals. The field of animal cognition examines the underlying processes and mechanisms. Fishes are a particularly interesting group of vertebrates to study cognition for two...

  13. Fish hemoglobins

    OpenAIRE

    Souza,P.C. de; Bonilla-Rodriguez,G.O.

    2007-01-01

    Vertebrate hemoglobin, contained in erythrocytes, is a globular protein with a quaternary structure composed of 4 globin chains (2 alpha and 2 beta) and a prosthetic group named heme bound to each one. Having myoglobin as an ancestor, hemoglobin acquired the capacity to respond to chemical stimuli that modulate its function according to tissue requirements for oxygen. Fish are generally submitted to spatial and temporal O2 variations and have developed anatomical, physiological and biochemica...

  14. Forestry practices and aquatic biodiversity: Fish

    Science.gov (United States)

    Gresswell, Robert E.

    2005-01-01

    example, the salmonids in the coastal rivers and streams, and the larger interconnected streams, rivers, and lakes of the interior exhibit a variety of ecotypes and migratory life histories (Healey 1986; Trotter 1989; Larson and McIntire 1993; Northcote 1997). This life-history variation appears to be associated with adaptation to spatial and temporal variation in environment (e.g., Schaffer and Elson 1975; Carl and Healey 1984; Beacham and Murray 1987), and there is some evidence of the genetic heritability of life-history traits (Carl and Healey 1984; Gharrett and Smoker 1993; Hankin, Nicholas, and Downey 1993). Persistence of any level of biological organization (e.g., life-history type, population, metapopulation, subspecies, species, community) is related to the interaction of environmental and biological components, and intraspecific diversity is a means of spreading risk (sensu den Boer 1968) of extirpation in dynamic environments (Gresswell 1999). Unfortunately, despite the broad distribution and extensive intraspecific diversity, persistence of native fishes is uncertain in the Pacific Northwest. Many populations of anadromous salmonids, once synonymous with vigorous biological communities throughout the region, are threatened with extinction (Nehlsen, Williams, and Lichatowich 1991; Frissell 1993; Thurow, Lee, and Rieman 1997). Furthermore, over half of the native taxa in the Columbia River Basin are either listed under the Endangered Species Act, are being considered for listing, or are deemed sensitive by the management agencies (Lee et al. 1997; Thurow, Lee, and Rieman 1997). Potamodromous species like bull trout Salvelinus confluentus are estimated to occur as strong populations in less than 5% of their potential range (Rieman, Lee, and Thurow 1997). Although not currently listed under the endangered species list, the coastal cutthroat trout Oncorhynchus clarki is managed as a sensitive species in Oregon and California (Hall, Bisson, and Gresswell 1997

  15. Fish hemoglobins

    Directory of Open Access Journals (Sweden)

    P.C. de Souza

    2007-06-01

    Full Text Available Vertebrate hemoglobin, contained in erythrocytes, is a globular protein with a quaternary structure composed of 4 globin chains (2 alpha and 2 beta and a prosthetic group named heme bound to each one. Having myoglobin as an ancestor, hemoglobin acquired the capacity to respond to chemical stimuli that modulate its function according to tissue requirements for oxygen. Fish are generally submitted to spatial and temporal O2 variations and have developed anatomical, physiological and biochemical strategies to adapt to the changing environmental gas availability. Structurally, most fish hemoglobins are tetrameric; however, those from some species such as lamprey and hagfish dissociate, being monomeric when oxygenated and oligomeric when deoxygenated. Fish blood frequently possesses several hemoglobins; the primary origin of this finding lies in the polymorphism that occurs in the globin loci, an aspect that may occasionally confer advantages to its carriers or even be a harmless evolutionary remnant. On the other hand, the functional properties exhibit different behaviors, ranging from a total absence of responses to allosteric regulation to drastic ones, such as the Root effect.

  16. In vitro propagation of endangered Dianthus taxa

    Directory of Open Access Journals (Sweden)

    Marković Marija

    2015-01-01

    Full Text Available The review of recent researches regarding the in vitro culture of 30 endangered Dianthus taxa is presented in this paper. Various in vitro protocols developed for selected rare and threatened Dianthus taxa are analysed in order to provide a useful synthesis of the data obtained with the main principles, techniques and recommendations for futher research and practice. The recapitulated data presented in this review can be used as a tool for the micropropagation of other endangered Dianthus taxa, enabling their propagation and obtaining a sufficient amount of plants for reintroduction. In addition, the obtained results represent the basis for ex situ conservation of the investigated taxa, especially for medium-term and long-term conservation (cryopreservation. [Projekat Ministarstva nauke Republike Srbije, br. 43007

  17. Quantifying Temporal Genomic Erosion in Endangered Species.

    Science.gov (United States)

    Díez-Del-Molino, David; Sánchez-Barreiro, Fatima; Barnes, Ian; Gilbert, M Thomas P; Dalén, Love

    2018-03-01

    Many species have undergone dramatic population size declines over the past centuries. Although stochastic genetic processes during and after such declines are thought to elevate the risk of extinction, comparative analyses of genomic data from several endangered species suggest little concordance between genome-wide diversity and current population sizes. This is likely because species-specific life-history traits and ancient bottlenecks overshadow the genetic effect of recent demographic declines. Therefore, we advocate that temporal sampling of genomic data provides a more accurate approach to quantify genetic threats in endangered species. Specifically, genomic data from predecline museum specimens will provide valuable baseline data that enable accurate estimation of recent decreases in genome-wide diversity, increases in inbreeding levels, and accumulation of deleterious genetic variation. Copyright © 2017 Elsevier Ltd. All rights reserved.

  18. Costs Associated with Endangered Species Act Compliance

    Science.gov (United States)

    2013-08-01

    August 2013 2 on economic costs or values related to endangered species costs or values, focuses primarily on Contingent Valuation Method studies...of species preservation (Lew, Layton, and Rowe 2010; Wallmo 2006). Most studies consider public valuation of species preservation, and not costs of...2012, NMFS 2006, U.S. Army Engineer, Mississippi Valley Division 2012, Kozlowski 1993, PFMC 2002) and through development of expenditure categories

  19. Cryopreservation of sperm bundles (spermatozeugmata) from endangered livebearing goodeids.

    Science.gov (United States)

    Liu, Yue; Torres, Leticia; Tiersch, Terrence R

    2018-04-14

    More than half of fishes in the family Goodeidae are considered to be endangered, threatened, or vulnerable. Sperm cryopreservation is an effective tool for conserving genetic resources of imperiled populations, but development of protocols with livebearing fishes faces numerous challenges including the natural packaging of sperm into bundles. In this study the cryopreservation of sperm bundles (spermatozeugmata) of three goodeids species was evaluated. Sperm quality was evaluated by activation with NaCl-NaOH solution (at 300 mOsmol/kg and pH 11.8), and analysis of dissociable bundles and dissociation duration. Using Redtail Splitfin (Xenotoca eiseni) as a model, the effects of cryoprotectants (dimethyl sulfoxide, methanol, and glycerol) with different concentrations (5-15% v/v %), equilibration exposure times (1-60 min), cooling rates (5-40 °C/min), concentrations (4 × 10 4 -4 × 10 6 bundles/ml), buffers (HBSS, PBS and NaCl), and buffer osmolalities (200-400 mOsmol/kg) were investigated. After cooling and thawing, sperm bundles maintained their packed form. A specific protocol was developed (10% dimethyl sulfoxide, 20-min equilibration, 10 °C/min cooling rate, 4 × 10 6 bundles/ml, and 300 mOsmol/kg HBSS). This protocol yielded 89 ± 5% of post-thaw dissociable bundles with 209 ± 10 s of dissociation duration for X. eiseni, 96 ± 9% with 814 ± 14 s for Blackfin Goodea (Goodea atripinni), and 66 ± 2% with 726 ± 25 s for Striped Goodeid (Ataeniobius toweri). This is the first study of cryopreservation of sperm within bundles for livebearing fishes and provides a basis for establishment of germplasm repositories for goodeids and other livebearers. Copyright © 2018 Elsevier Inc. All rights reserved.

  20. Biological Assessment of the Continued Operation of Los Alamos National Laboratory on Federally Listed Threatened and Endangered Species

    Energy Technology Data Exchange (ETDEWEB)

    Hansen, Leslie A. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Ecology and Air Quality Group

    2006-09-19

    This biological assessment considers the effects of continuing to operate Los Alamos National Laboratory on Federally listed threatened or endangered species, based on current and future operations identified in the 2006 Site-wide Environmental Impact Statement for the Continued Operation of Los Alamos National Laboratory (SWEIS; DOE In Prep.). We reviewed 40 projects analyzed in the SWEIS as well as two aspects on ongoing operations to determine if these actions had the potential to affect Federally listed species. Eighteen projects that had not already received U.S. Fish and Wildlife Service (USFWS) consultation and concurrence, as well as the two aspects of ongoing operations, ecological risk from legacy contaminants and the Outfall Reduction Project, were determined to have the potential to affect threatened or endangered species. Cumulative impacts were also analyzed.

  1. 77 FR 6138 - Draft Policy on Interpretation of the Phrase “Significant Portion of Its Range” in the Endangered...

    Science.gov (United States)

    2012-02-07

    ... Portion of Its Range'' in the Endangered Species Act's Definitions of ``Endangered Species'' and... interpreting the phrase ``significant portion of its range'' in the Endangered Species Act's (Act's...'' in the Act's definitions of ``endangered species'' and ``threatened species'' will consider...

  2. 78 FR 13614 - Endangered and Threatened Wildlife; 90-Day Finding on a Petition To List the Humphead Wrasse as...

    Science.gov (United States)

    2013-02-28

    ... Petition To List the Humphead Wrasse as Threatened or Endangered Under the Endangered Species Act AGENCY... endangered and designate critical habitat under the Endangered Species Act (ESA). We find that the petition... within 90 days of [[Page 13615

  3. Fish Tales

    International Nuclear Information System (INIS)

    McLerran, L.

    2010-01-01

    This talk is about fishing and the friendships that have resulted in its pursuit. It is also about theoretical physics, and the relationship of imagination and fantasy to the establishment of ideas about nature. Fishermen, like theoretical physicists, are well known for their inventive imaginations. Perhaps neither are as clever as sailors, who conceived of the mermaid. If one doubts the power of this fantasy, one should remember the ghosts of the many sailors who drowned pursuing these young nymphs. An extraordinary painting by J. Waterhouse is shown as Fig. 1. The enchantment of a mermaid must reflect an extraordinary excess of imagination on the part of the sailor, perhaps together with an impractical turn of mind. A consummated relationship with a mermaid is after all, by its very nature a fantasy incapable of realization. To a theoretical physicist, she is symbolic of many ideas we develop. There are many truths known to fisherman in which one might also find parallels to the goals of scientists: (1) A fish is the only animal that keeps growing after its death; (2) Nothing makes a fish bigger than almost being caught; (3) ''...of all the liars among mankind, the fisherman is the most trustworthy.'' (William Sherwood Fox, in Silken Lines and Silver Hooks); and (4) Men and fish are alike. They both get into trouble when they open their mouths. These quotes may be interpreted as reflecting skepticism regarding the honesty of fisherman, and probably do not reflect adequate admiration for a creative imagination. Is it fair to criticize a person for believing a falsehood that he or she sincerely believes to be true? The fisherman simultaneously invents the lie, and believes in it himself. The parallel with theoretical physics is perhaps only approximate, although we physicists may invent stories that we come to believe, on some rare occasions our ideas actually correspond to a more or less true descriptions of nature. These minor philosophical differences are not

  4. Fish Tales

    Energy Technology Data Exchange (ETDEWEB)

    McLerran, L.

    2010-07-06

    This talk is about fishing and the friendships that have resulted in its pursuit. It is also about theoretical physics, and the relationship of imagination and fantasy to the establishment of ideas about nature. Fishermen, like theoretical physicists, are well known for their inventive imaginations. Perhaps neither are as clever as sailors, who conceived of the mermaid. If one doubts the power of this fantasy, one should remember the ghosts of the many sailors who drowned pursuing these young nymphs. An extraordinary painting by J. Waterhouse is shown as Fig. 1. The enchantment of a mermaid must reflect an extraordinary excess of imagination on the part of the sailor, perhaps together with an impractical turn of mind. A consummated relationship with a mermaid is after all, by its very nature a fantasy incapable of realization. To a theoretical physicist, she is symbolic of many ideas we develop. There are many truths known to fisherman in which one might also find parallels to the goals of scientists: (1) A fish is the only animal that keeps growing after its death; (2) Nothing makes a fish bigger than almost being caught; (3) ''...of all the liars among mankind, the fisherman is the most trustworthy.'' (William Sherwood Fox, in Silken Lines and Silver Hooks); and (4) Men and fish are alike. They both get into trouble when they open their mouths. These quotes may be interpreted as reflecting skepticism regarding the honesty of fisherman, and probably do not reflect adequate admiration for a creative imagination. Is it fair to criticize a person for believing a falsehood that he or she sincerely believes to be true? The fisherman simultaneously invents the lie, and believes in it himself. The parallel with theoretical physics is perhaps only approximate, although we physicists may invent stories that we come to believe, on some rare occasions our ideas actually correspond to a more or less true descriptions of nature. These minor philosophical

  5. 75 FR 19987 - Endangered and Threatened Species Permit Applications

    Science.gov (United States)

    2010-04-16

    ... applied for scientific research permits to conduct certain activities with endangered species under the...) within Arizona. Permit TE-178778 Applicant: Marks Lab of Aquatic Ecology, Flagstaff, Arizona. Applicant...

  6. Fishing activities

    Science.gov (United States)

    Oberle, Ferdinand; Puig, Pere; Martin, Jacobo; Micallef, Aaron; Krastel, Sebastian; Savini, Alessandra

    2018-01-01

    Unlike the major anthropogenic changes that terrestrial and coastal habitats underwent during the last centuries such as deforestation, river engineering, agricultural practices or urbanism, those occurring underwater are veiled from our eyes and have continued nearly unnoticed. Only recent advances in remote sensing and deep marine sampling technologies have revealed the extent and magnitude of the anthropogenic impacts to the seafloor. In particular, bottom trawling, a fishing technique consisting of dragging a net and fishing gear over the seafloor to capture bottom-dwelling living resources has gained attention among the scientific community, policy makers and the general public due to its destructive effects on the seabed. Trawling gear produces acute impacts on biota and the physical substratum of the seafloor by disrupting the sediment column structure, overturning boulders, resuspending sediments and imprinting deep scars on muddy bottoms. Also, the repetitive passage of trawling gear over the same areas creates long-lasting, cumulative impacts that modify the cohesiveness and texture of sediments. It can be asserted nowadays that due to its recurrence, mobility and wide geographical extent, industrial trawling has become a major force driving seafloor change and affecting not only its physical integrity on short spatial scales but also imprinting measurable modifications to the geomorphology of entire continental margins.

  7. 75 FR 16046 - Endangered and Threatened Wildlife and Plants; Listing Casey's June Beetle as Endangered and...

    Science.gov (United States)

    2010-03-31

    ... Supervisor, U.S. Fish and Wildlife Service, Carlsbad Fish and Wildlife Office, 6010 Hidden Valley Road, Suite... for this species. Even if this information existed, the published valuation literature does not...

  8. Fish tapeworm infection

    Science.gov (United States)

    Fish tapeworm infection is an intestinal infection with a parasite found in fish. ... The fish tapeworm ( Diphyllobothrium latum ) is the largest parasite that infects humans. Humans become infected when they eat raw ...

  9. Fish welfare: Fish capacity to experience pain

    Directory of Open Access Journals (Sweden)

    Vučinić Marijana

    2009-01-01

    Full Text Available Teleost fish possess similar nociceptive processing systems to those found in terrestrial vertebrates. It means that they react to potential painful stimuli in a similar manner as mammals and birds. However, the welfare of fish has been the focus of less research than that of higher vertebrates. Humans may affect the welfare of fish through fisheries, aquaculture and a number of other activities. There is scientific evidence to support the assumption that fish have the capacity to experience pain because they possess functional nociceptors, endogenous opioids and opioid receptors, brain structures involved in pain processing and pathways leading from nociceptors to higher brain structures. Also, it is well documented that some anaesthetics and analgesics may reduce nociceptive responses in fish. Behavioural indicators in fish such as lip-rubbing and rocking behaviours are the best proof that fish react to potential painful stimuli. This paper is an overview of some scientific evidence on fish capacity to experience pain.

  10. 75 FR 286 - Endangered and Threatened Wildlife and Plants; Listing Six Foreign Birds as Endangered Throughout...

    Science.gov (United States)

    2010-01-05

    ... still occurs. The European Union (EU) Habitat Directive 92/43/EEC addresses the protection of habitat and species listed as endangered at the European scale (European Union 2008). Several habitat types... effects of climate change on these species or their habitats. Please note that submissions merely stating...

  11. 76 FR 50051 - Endangered and Threatened Wildlife and Plants; Listing Six Foreign Birds as Endangered Throughout...

    Science.gov (United States)

    2011-08-11

    ... goals of the Recovery Plan. The European Union (EU) Habitat Directive 92/43/EEC addresses the protection of habitat and species listed as endangered at the European scale (European Union 2008). Several... climate change will likely further threaten and impact the species. Our Response: After review of the two...

  12. Fish for Feed vs Fish for Food

    OpenAIRE

    Allan, Geoff L.

    2004-01-01

    Aquaculture is the fastest-growing food producing industry sector in the world. Demand for feed ingredients, particularly for preferred protein sources such as fishmeal, fish oil and ‘trash fish’, has also increased, raising questions about sustainability and uses of fish for aquaculture feeds or directly as human food. Approximately 30 million metric tonnes (MMT) of fish from capture fisheries are used each year to produce fishmeal and fish oil. The species used are not usually consumed dire...

  13. Microbiological spoilage of fish and fish products.

    Science.gov (United States)

    Gram, L; Huss, H H

    1996-11-01

    Spoilage of fresh and lightly preserved fish products is caused by microbial action. This paper reviews the current knowledge in terms of the microbiology of fish and fish products with particular emphasis on identification of specific spoilage bacteria and the qualitative and quantitative biochemical indicators of spoilage. Shewanella putrefaciens and Pseudomonas spp. are the specific spoilage bacteria of iced fresh fish regardless of the origin of the fish. Modified atmosphere stored marine fish from temperate waters are spoiled by the CO2 resistant Photobacterium phosphoreum whereas Gram-positive bacteria are likely spoilers of CO2 packed fish from fresh or tropical waters. Fish products with high salt contents may spoil due to growth of halophilic bacteria (salted fish) or growth of anaerobic bacteria and yeasts (barrel salted fish). Whilst the spoilage of fresh and highly salted fish is well understood, much less is known about spoilage of lightly preserved fish products. It is concluded that the spoilage is probably caused by lactic acid bacteria, certain psychotrophic Enterobacteriaceae and/or Photobacterium phosphoreum. However, more work is needed in this area.

  14. Fishing Fish Stem Cells and Nuclear Transplants

    OpenAIRE

    Hong, Yunhan

    2011-01-01

    Fish has been the subject of various research fields, ranging from ecology, evolution, physiology and toxicology to aquaculture. In the past decades fish has attracted considerable attention for functional genomics, cancer biology and developmental genetics, in particular nuclear transfer for understanding of cytoplasmic-nuclear relationship. This special issue reports on recent progress made in fish stem cells and nuclear transfer.

  15. Endangered wolves cloned from adult somatic cells.

    Science.gov (United States)

    Kim, Min Kyu; Jang, Goo; Oh, Hyun Ju; Yuda, Fibrianto; Kim, Hye Jin; Hwang, Woo Suk; Hossein, Mohammad Shamim; Kim, Joung Joo; Shin, Nam Shik; Kang, Sung Keun; Lee, Byeong Chun

    2007-01-01

    Over the world, canine species, including the gray wolf, have been gradually endangered or extinct. Many efforts have been made to recover and conserve these canids. The aim of this study was to produce the endangered gray wolf with somatic cell nuclear transfer (SCNT) for conservation. Adult ear fibroblasts from a female gray wolf (Canis lupus) were isolated and cultured in vitro as donor cells. Because of limitations in obtaining gray wolf matured oocytes, in vivo matured canine oocytes obtained by flushing the oviducts from the isthmus to the infundibulum were used. After removing the cumulus cells, the oocyte was enucleated, microinjected, fused with a donor cell, and activated. The reconstructed cloned wolf embryos were transferred into the oviducts of the naturally synchronized surrogate mothers. Two pregnancies were detected by ultrasonography at 23 days of gestation in recipient dogs. In each surrogate dog, two fetal sacs were confirmed by early pregnancy diagnosis at 23 days, but only two cloned wolves were delivered. The first cloned wolf was delivered by cesarean section on October 18, 2005, 60 days after embryo transfer. The second cloned wolf was delivered on October 26, 2005, at 61 days postembryo transfer. Microsatellite analysis was performed with genomic DNA from the donor wolf, the two cloned wolves, and the two surrogate female recipients to confirm the genetic identity of the cloned wolves. Analysis of 19 microsatellite loci confirmed that the cloned wolves were genetically identical to the donor wolf. In conclusion, we demonstrated live birth of two cloned gray wolves by nuclear transfer of wolf somatic cells into enucleated canine oocyte, indicating that SCNT is a practical approach for conserving endangered canids.

  16. The Endangered Species Act and a Deeper Look at Extinction.

    Science.gov (United States)

    Borowski, John F.

    1992-01-01

    Discusses the importance of saving species and dispels myths surrounding the endangered species act as background to three student activities that include a round table debate, writing to congresspeople, and a research project suggestion. Lists reference materials for endangered species. (MCO)

  17. 76 FR 58471 - Endangered Species; File No. 15634

    Science.gov (United States)

    2011-09-21

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA714 Endangered..., [Responsible Party: Lisa Ballance, Ph.D.], has applied in due form for a permit to take leatherback sea turtles.... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of...

  18. 77 FR 67341 - Endangered Species; File No. 15809

    Science.gov (United States)

    2012-11-09

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC325 Endangered... (Eretmochelys imbricata) sea turtles for the purpose of scientific research. DATES: Written, telefaxed, or email... the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations...

  19. 75 FR 9868 - Endangered Species; File No. 14622

    Science.gov (United States)

    2010-03-04

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XU82 Endangered... (Caretta caretta) sea turtles for purposes of scientific research. DATES: Written, telefaxed, or e-mail... authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the...

  20. 75 FR 22106 - Endangered Species; File No. 14510

    Science.gov (United States)

    2010-04-27

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XW06 Endangered...), and leatherback (Dermochelys coriacea) sea turtles for purposes of scientific research. ADDRESSES: The.... The requested permit has been issued under the authority of the Endangered Species Act of 1973, as...

  1. 75 FR 7443 - Endangered Species; File No. 14381

    Science.gov (United States)

    2010-02-19

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XU26 Endangered... (Lepidochelys olivacea), and hawksbill (Eretmochelys imbricata) sea turtles for purposes of scientific research...-named organization. The requested permit has been issued under the authority of the Endangered Species...

  2. 75 FR 13488 - Endangered Species; File No. 14949

    Science.gov (United States)

    2010-03-22

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XV33 Endangered... permit to take hawksbill (Eretmochelys imbricata) and green (Chelonia mydas) sea turtles for purposes of.... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of...

  3. 77 FR 72326 - Endangered Species; File No. 17381

    Science.gov (United States)

    2012-12-05

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC372 Endangered... (Caretta caretta), hawksbill (Eretmochelys imbricata), and Kemp's ridley (Lepidochelys kempii) sea turtles.... SUPPLEMENTARY INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of...

  4. 77 FR 13096 - Endangered Species; File No. 16598

    Science.gov (United States)

    2012-03-05

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XB054 Endangered... turtles for scientific research. DATES: Written, telefaxed, or email comments must be received on or... under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and...

  5. 75 FR 71670 - Endangered Species; File No. 15606

    Science.gov (United States)

    2010-11-24

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA054 Endangered... (Lepidochelys kempii), loggerhead (Caretta caretta), and hawksbill (Eretmochelys imbricata) sea turtles for... INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of 1973, as...

  6. 78 FR 13642 - Endangered Species; File No. 17506

    Science.gov (United States)

    2013-02-28

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC518 Endangered... turtles for purposes of scientific research. DATES: Written, telefaxed, or email comments must be received... Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq.) and the regulations governing the...

  7. 76 FR 37327 - Endangered Species; File No. 16253

    Science.gov (United States)

    2011-06-27

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA518 Endangered... loggerhead (Caretta caretta) sea turtles for scientific research. DATES: Written, telefaxed, or e-mail... INFORMATION: The subject permit is requested under the authority of the Endangered Species Act of 1973, as...

  8. 76 FR 33245 - Endangered Species; File No. 15135

    Science.gov (United States)

    2011-06-08

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA466 Endangered..., 132 Conch Court, Emerald Isle, NC 28594, has been issued a permit to take threatened and endangered sea turtles for purposes scientific research. ADDRESSES: The permit and related documents are...

  9. 75 FR 13255 - Endangered Species; File No. 15338

    Science.gov (United States)

    2010-03-19

    ... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XU83 Endangered... form for a permit pursuant to the Endangered Species Act of 1973, as amended (ESA). The Permit application is for the incidental take of ESA-listed sea turtles and shortnose sturgeon associated with...

  10. 75 FR 67682 - Endangered Species; File No. 15566

    Science.gov (United States)

    2010-11-03

    ... permit is requested under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA013 Endangered Species; File No. 15566 AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric...

  11. 77 FR 58812 - Endangered Species; File No. 17316

    Science.gov (United States)

    2012-09-24

    ..., importing, and exporting of endangered and threatened species (50 CFR 222-226). The applicant proposes to... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC252 Endangered Species; File No. 17316 AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric...

  12. 76 FR 58471 - Endangered Species; File No. 16306

    Science.gov (United States)

    2011-09-21

    ... requested under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XA712 Endangered Species; File No. 16306 AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric...

  13. 78 FR 29114 - Endangered Species; File No. 17304

    Science.gov (United States)

    2013-05-17

    ... requested under the authority of the Endangered Species Act of 1973, as amended (ESA; 16 U.S.C. 1531 et seq... DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration RIN 0648-XC667 Endangered Species; File No. 17304 AGENCY: National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric...

  14. [Investigation and protection for endangered Coptis deltoidea].

    Science.gov (United States)

    Xiong, Feiyu; Ma, Yuntong; Yan, Zhuyun; Chen, Xin; Zhu, Meng; Chen, Run

    2011-04-01

    To investigate the history of the medicinal uses, resources, distribution, habitat and population characteristic of Coptis deltoidea, and provide basis for the protection and rational development and utilization of Radix Coptidis Deltoideae. The relevant literature and data was scrutinized and herbarium was compared, interview and field survey methods were carried out. The medicinal history, resources, distribution, population characteristic and protective strategy of C. deltoidea were summarized. The sustainable development of C. deltoidea was discussed. The resource is endangered, the germplasm resources should be intentionally protected and ensure the sustainable development and utilization of C. deltoidea.

  15. Proceedings of the Mongolian Biodiversity Databank Workshop: Assessing the Conservation Status of Mongolian Mammals and Fishes: III – Fishes: Assessment Results and Threats

    Directory of Open Access Journals (Sweden)

    Joanne F. Ocock

    2005-12-01

    Full Text Available The Mongolian Biodiversity Databank Workshop was held at the National University of Mongolia and Hustai National Park from 1 st October to 4 th November, 2005. As part of the workshop, a working group of fish experts assessed the conservation status of all Mongolian fishes using the IUCN Catego - ries and Criteria. Of the 64 fish species found in Mongolia, 48 were assessed, with 16 considered Not Applicable (NA by the working group. Only one species, the Siberian sturgeon ( Acipenser baerii was assessed as Critically Endangered (CR in Mongolia, however six species were assigned Endangered (EN status. Four were found to be Vulnerable (VU and three were assessed to be Near Threatened (NT. Forty-eight percent of Mongolian fishes were Data Deficient (DD and 25% were Least Concern (LC. The north-east of Mongolia was most species rich, particularly the Onon River basin and Buir Lake. There was no trend for where the most threatened species occurred as they were found throughout the north of Mongolia. Hunting/fishing was the greatest threat to Mongolian fishes, followed by resource extraction and pollution.

  16. 50 CFR 222.309 - Permits for listed species of sea turtles involving the Fish and Wildlife Service.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Permits for listed species of sea turtles... species of sea turtles involving the Fish and Wildlife Service. (a) This section establishes specific... survival of endangered or threatened species of sea turtles; zoological exhibition or educational purposes...

  17. Larvae of Contracaecum sp. (Nematoda: Anisakidae) in the threatened freshwater fish Sandelia capensis (Anabantidae) in South Africa

    Czech Academy of Sciences Publication Activity Database

    Moravec, František; van Rensburg, C.J.; Van As, L. L.

    2016-01-01

    Roč. 120, č. 3 (2016), s. 251-254 ISSN 0177-5103 R&D Projects: GA ČR GBP505/12/G112 Institutional support: RVO:60077344 Keywords : parasitic nematode * third-stage larva * paratenic host * endangered fish species * Africa Subject RIV: EG - Zoology Impact factor: 1.549, year: 2016

  18. Endangered Species Program Naval Petroleum Reserves in California

    International Nuclear Information System (INIS)

    1992-02-01

    The Naval Petroleum Reserves in California (NPRC) are operated by the US Department of Energy (DOE). Construction and development activities, which are conducted by DOE at Naval Petroleum Reserve number-sign 1 (NPR-1) to comply with the Naval Petroleum Reserves Production Act of 1976 (Public Law 94-258), potentially threaten the continued existence of four federally-listed endangered species: the San Joaquin kit fox, (Vulpes macrotis mutica), blunt-nosed leopard lizard (Gambelia silus), giant kangaroo rat (Dipodomys ingens), and Tipton kangaroo rat (Dipodomys nitratoides nitratoides). All four are protected under the Endangered Species Act of 1973. The major objective of the Endangered Species Program on NPR-1 and NPR-2 is to provide DOE with the scientific expertise and continuity of programs necessary for continued compliance with the Endangered Species Act. The specific objective of this report is to summarize progress and results of the Endangered Species Program made during Fiscal Year 1990 (FY90)

  19. Sperm quality assessments for endangered razorback suckers Xyrauchen Texanus

    Science.gov (United States)

    Jenkins, Jill A.; Eilts, Bruce E.; Guitreau, Amy M.; Figiel, Chester R.; Draugelis-Dale, Rassa O.; Tiersch, Terrence R.

    2011-01-01

    Flow cytometry (FCM) and computer-assisted sperm motion analysis (CASA) methods were developed and validated for use with endangered razorback suckers Xyrauchen texanus collected (n=64) during the 2006 spawning season. Sperm motility could be activated within osmolality ranges noted during milt collections (here 167–343 mOsm/kg). We hypothesized that sperm quality of milt collected into isoosmotic (302 mOsm/kg) or hyperosmotic (500 mOsm/kg) Hanks' balanced salt solution would not differ. Pre-freeze viabilities were similar between osmolalities (79%±6 (S.E.M.) and 76%±7); however, post-thaw values were greater in hyperosmotic buffer (27%±3 and 12%±2; P=0.0065), as was mitochondrial membrane potential (33%±4 and 13%±2; P=0.0048). Visual estimates of pre-freeze motility correlated with total (r=0.7589; range 23–82%) and progressive motility (r=0.7449) by CASA and were associated with greater viability (r=0.5985; Pr=-0.83; P=0.0116) and mitochondrial function (r=-0.91; P=0.0016). By FCM-based assessments of DNA integrity, whereby increased fluorochrome binding indicated more fragmentation, higher levels were negatively correlated with count (r=-0.77; Pr=-0.66; P=0.0004). Fragmentation was higher in isotonic buffer (P=0.0234). To increase reproductive capacity of natural populations, the strategy and protocols developed can serve as a template for use with other imperiled fish species, biomonitoring, and genome banking.

  20. Establishing endangered species recovery criteria using predictive simulation modeling

    Science.gov (United States)

    McGowan, Conor P.; Catlin, Daniel H.; Shaffer, Terry L.; Gratto-Trevor, Cheri L.; Aron, Carol

    2014-01-01

    Listing a species under the Endangered Species Act (ESA) and developing a recovery plan requires U.S. Fish and Wildlife Service to establish specific and measurable criteria for delisting. Generally, species are listed because they face (or are perceived to face) elevated risk of extinction due to issues such as habitat loss, invasive species, or other factors. Recovery plans identify recovery criteria that reduce extinction risk to an acceptable level. It logically follows that the recovery criteria, the defined conditions for removing a species from ESA protections, need to be closely related to extinction risk. Extinction probability is a population parameter estimated with a model that uses current demographic information to project the population into the future over a number of replicates, calculating the proportion of replicated populations that go extinct. We simulated extinction probabilities of piping plovers in the Great Plains and estimated the relationship between extinction probability and various demographic parameters. We tested the fit of regression models linking initial abundance, productivity, or population growth rate to extinction risk, and then, using the regression parameter estimates, determined the conditions required to reduce extinction probability to some pre-defined acceptable threshold. Binomial regression models with mean population growth rate and the natural log of initial abundance were the best predictors of extinction probability 50 years into the future. For example, based on our regression models, an initial abundance of approximately 2400 females with an expected mean population growth rate of 1.0 will limit extinction risk for piping plovers in the Great Plains to less than 0.048. Our method provides a straightforward way of developing specific and measurable recovery criteria linked directly to the core issue of extinction risk. Published by Elsevier Ltd.

  1. Fish under exercise

    NARCIS (Netherlands)

    Palstra, A.P.; Planas, J.V.

    2011-01-01

    Improved knowledge on the swimming physiology of fish and its application to fisheries science and aquaculture (i.e., farming a fitter fish) is currently needed in the face of global environmental changes, high fishing pressures, increased aquaculture production as well as increased concern on fish

  2. Meet the surrogate fish

    International Nuclear Information System (INIS)

    Johnson, Bob; Neitzel, Duane; Moxon, Suzanne

    1999-01-01

    This article gives details of the US Department of Energy's innovative research into the development of a sensor system that will work as a surrogate fish to provide information to aid the design of fish-friendly turbines for hydroelectric power plants. The selection of the dams for the testing of sensor fish, the release and recovery of the sensor fish, the recording of the physical forces exerted on fish as they pass through the turbines, and use of the information gathered to build more sensor fish are discussed. Fish investigations conducted at the Pacific Northwest National Laboratory are briefly described. (UK)

  3. Plastic fish

    CERN Multimedia

    Antonella Del Rosso

    2015-01-01

    In terms of weight, the plastic pollution in the world’s oceans is estimated to be around 300,000 tonnes. This plastic comes from both land-based and ocean-based sources. A lecture at CERN by chemist Wolfgang Trettnak addressed this issue and highlighted the role of art in raising people’s awareness.   Artwork by Wolfgang Trettnak. Packaging materials, consumer goods (shoes, kids’ toys, etc.), leftovers from fishing and aquaculture activities… our oceans and beaches are full of plastic litter. Most of the debris from beaches is plastic bottles. “PET bottles have high durability and stability,” explains Wolfgang Trettnak, a chemist by education and artist from Austria, who gave a lecture on this topic organised by the Staff Association at CERN on 26 May. “PET degrades very slowly and the estimated lifetime of a bottle is 450 years.” In addition to the beach litter accumulated from human use, rivers bring several ki...

  4. Three Kinds of Fish

    DEFF Research Database (Denmark)

    Høst, Jeppe Engset

    2012-01-01

    There are three kinds of fish. Fish you were given, fish you bought and fish you lease. This might sound a bit odd, but it is nevertheless the basis for the activities of Danish commercial fishers since the introduction of transferable fishing concessions (TFCs) in 2007. In the current 2012 reform...... of market based systems are wild speculation, concentration and monopolization of fishing access and subsequent leasing with fishing communities and new entrants very likely being worse off (see for example the chapter “From fishing rights to financial derivatives” is this volume or Olson 2011; Sumaila 2010...... will examine five Danish fishing operations and discuss how they have reacted in different ways to the newly introduced system of transferable fishing concessions. By introducing TFCs as a solution to fleet overcapacity, the EU Commission will also be introducing a system where buying, selling and leasing...

  5. Microsatellite Development for an Endangered Bream Megalobrama pellegrini (Teleostei, Cyprinidae Using 454 Sequencing

    Directory of Open Access Journals (Sweden)

    Zuogang Peng

    2012-03-01

    Full Text Available Megalobrama pellegrini is an endemic fish species found in the upper Yangtze River basin in China. This species has become endangered due to the construction of the Three Gorges Dam and overfishing. However, the available genetic data for this species is limited. Here, we developed 26 polymorphic microsatellite markers from the M. pellegrini genome using next-generation sequencing techniques. A total of 257,497 raw reads were obtained from a quarter-plate run on 454 GS-FLX titanium platforms and 49,811 unique sequences were generated with an average length of 404 bp; 24,522 (49.2% sequences contained microsatellite repeats. Of the 53 loci screened, 33 were amplified successfully and 26 were polymorphic. The genetic diversity in M. pellegrini was moderate, with an average of 3.08 alleles per locus, and the mean observed and expected heterozygosity were 0.47 and 0.51, respectively. In addition, we tested cross-species amplification for all 33 loci in four additional breams: M. amblycephala, M. skolkovii, M. terminalis, and Sinibrama wui. The cross-species amplification showed a significant high level of transferability (79%–97%, which might be due to their dramatically close genetic relationships. The polymorphic microsatellites developed in the current study will not only contribute to further conservation genetic studies and parentage analyses of this endangered species, but also facilitate future work on the other closely related species.

  6. 78 FR 77289 - Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Arctostaphylos...

    Science.gov (United States)

    2013-12-20

    ... the Endangered Species Act. In total, approximately 230.2 acres (93.1 hectares) in San Francisco... this regulation is to designate critical habitat for A. franciscana under the Endangered Species Act... Endangered Species Act (Act), any species that is determined to be an endangered or threatened species...

  7. Threatened and Endangered Species Habitat Management Plan for Los Alamos National Laboratory

    Energy Technology Data Exchange (ETDEWEB)

    Keller, David Charles [Los Alamos National Laboratory; Hathcock, Charles Dean [Los Alamos National Laboratory

    2015-11-17

    Los Alamos National Laboratory’s (LANL) Threatened and Endangered Species Habitat Management Plan (HMP) fulfills a commitment made to the U.S. Department of Energy (DOE) in the “Final Environmental Impact Statement for the Dual-Axis Radiographic Hydrodynamic Test Facility Mitigation Action Plan” (DOE 1996). The HMP received concurrence from the U.S. Fish and Wildlife Service (USFWS) in 1999 (USFWS consultation numbers 2-22-98-I-336 and 2-22-95-I-108). This 2015 update retains the management guidelines from the 1999 HMP for listed species, updates some descriptive information, and adds the New Mexico Meadow Jumping Mouse (Zapus hudsonius luteus) and Yellow-billed Cuckoo (Coccyzus americanus) which were federally listed in 2014 (Keller 2015: USFWS consultation number 02ENNM00- 2015-I-0538).

  8. Phylogeographic implications for release of critically endangered manatee calves rescued in Northeast Brazil

    Science.gov (United States)

    Luna, Fábia O.; Bonde, Robert K.; Attademo, Fernanda L.N.; Saunders, Jonathan W.; Meigs-Friend, Gaia; Passavante, José Zanon O.; Hunter, Margaret E.

    2012-01-01

    1. The Antillean manatee (Trichechus manatus manatus), a subspecies of the West Indian manatee, is a large-bodied marine mammal found in fresh, brackish, and marine habitats throughout the Caribbean Islands and Central and South America. Antillean manatees in Brazil are classified as critically endangered, with a census size of approximately 500 individuals. The population in the Northeast region of Brazil is suspected to have approximately 300 manatees and is threatened by habitat alteration and incidental entanglement in fishing gear. 2. A high incidence of dependent calf strandings have been identified near areas of altered critical manatee habitat. The majority of the calves are neonates, discovered alive, with no potential mothers nearby. These calves typically require human intervention to survive.

  9. Endangered Species Program, Naval Petroleum Reserves in California

    International Nuclear Information System (INIS)

    1992-12-01

    Naval Petroleum Reserve No. 1 (NPR-1) is operated by the U. S. Department of Energy (DOE) and Chevron USA (CUSA). Four federally-listed endangered animal species and one federally-threatened plant species are known to occur on the Naval Petroleum Reserves in California (NPRC): the San Joaquin kit fox (Vulpes velox macrotis), blunt-nosed leopard lizard (Gambelia silus), giant kangaroo rat (Dipodomys ingens), Tipton kangaroo rat (Dipodomys nitratoides nitratoides), and Hoover's wooly-star (Eriastrum hooveri). All five are protected under the Endangered Species Act of 1973 (as amended) (Public Law 93-205), which declaresthat it is the policy of Congress that all Federal departments and agencies shall seek to conserve endangered and threatened species and shall utilize their authorities in furtherance of the purposes of the Act. DOE is also obliged to determine whether actions taken by their lessees on Naval Petroleum Reserve No. 2 (NPR-2) will have any effects on endangered species or their habitats. The major objective of the EG ampersand G Energy Measurements, Inc. Endangered Species Program on NPR-1 and NPR-2 is to provide DOE with the scientific expertise and continuity of programs necessary for continued compliance with the Endangered SpeciesAct. The specific objective of this report is to summarize progress and results of the Endangered Species Program made during Fiscal Year 1992 (FY92)

  10. Endangered Species Program Naval Petroleum Reserves in California

    International Nuclear Information System (INIS)

    1992-03-01

    The Naval Petroleum Reserves in California (NPRC) are operated by the US Department of Energy (DOE) and Chevron USA. (CUSA). Four federally-listed endangered animal species and one threatened plant species are known to occur on NPRC: the San Joaquin kit fox (Vulpes macrotis mutica), blunt-nosed leopard lizard (Gambelia), giant kangaroo rat (Dipodomys ingens), Tipton kangaroo rat (Dipodomys nitratoides nitratoides) and Hoover's Wooly-star (Eriastrum hooveri). All five are protected under the Endangered Species Act of 1973 (as amended) (Public Law 93-205), which declares that it is the policy of Congress that all Federal departments and agencies shall seek to conserve endangered and threatened species and shall utilize their authorities in furtherance of the purposes of the Act. DOE is also obliged to determine whether actions taken by their lessees on Naval Petroleum Reserve No. 2 (NPR-2) will have any effects on endangered species or their habitats. The major objective of the Endangered Species Program on NPR-1 and NPR-2 is to provide DOE with the scientific expertise and continuity of programs necessary for the continued compliance with the Endangered Species Act. The specific objective of this report is to summarize progress and results of the Endangered Species Program made during Fiscal Year 1991 (FY91)

  11. Use of Artificial Propagation and Supplementation for Rebuilding Salmon Stocks Listed under the Endangered Species Act : Recovery Issues for Threatened and Endangered Snake River Salmon : Technical Report 5 of 11.

    Energy Technology Data Exchange (ETDEWEB)

    Lichatowich, Jim; Watson, Bruce

    1993-06-01

    Conventional hatcheries, supplementation, and habitat protection are management activities located on a production continuum. At one end of the continuum is the conventional hatchery which attempts to separate artificially propagated fish from naturally reproducing populations. On the other end of the continuum is natural production. Supplementation which attempts to increase natural production through the use of artificial propagation lies somewhere between natural production and conventional hatcheries on the continuum. The use of artificial propagation in the recovery of listed species is controversial. Guidance on the use of artificial propagation in the recovery of listed species comes from three sources: The Endangered Species Act (ESA), US Fish and Wildlife Service (USFWS) policies and National Marine Fisheries Service (NMFS) guidelines.

  12. Ethical considerations for field research on fishes

    Directory of Open Access Journals (Sweden)

    Rhett H. Bennett

    2016-12-01

    Full Text Available Collection of data from animals for research purposes can negatively impact target or by-catch species if suitable animal ethics practices are not followed. This study aimed to assess the ethical requirements of peer-reviewed scientific journals that publish primary literature on fishes, and review the ethical considerations and animal care guidelines of national and international documents on the ethical treatment of animals for research, to provide an overview of the general ethical considerations for field research on fishes. A review of 250 peer-reviewed, ISI-rated journals publishing primary research on fishes revealed that nearly half (46% had no mention of ethics, treatment of animals or ethical requirements for publication in their author guidelines or publication policies. However, 18% of the journals reviewed identify a specific set of ethical guidelines to be followed before publishing research involving animals. Ethical considerations for investigators undertaking field research on fishes, common to most animal care policies, legislation and guiding documents, include adhering to relevant legislation, minimising sample sizes, reducing or mitigating pain and distress, employing the most appropriate and least invasive techniques and accurately reporting methods and findings. This information will provide potential investigators with a useful starting point for designing and conducting ethical field research. Application of ethical best practices in field sampling studies will improve the welfare of study animals and the conservation of rare and endangered species. Conservation implications: This article provides a list of ethical considerations for designing and conducting field research on fishes. By reviewing sampling techniques and processes that are frequently used in field research on fishes and by highlighting the potential negative impacts of these sampling techniques, this article is intended to assist researchers in planning

  13. Transforming (perceived rigidity in environmental law through adaptive governance: a case of Endangered Species Act implementation

    Directory of Open Access Journals (Sweden)

    Hannah Gosnell

    2017-12-01

    Full Text Available The Endangered Species Act (ESA is often portrayed as a major source of instability and crisis in river basins of the U.S. West, where the needs of listed fish species frequently clash with agriculture dependent on federal irrigation projects subject to ESA Section 7 prohibitions on federal agency actions likely to jeopardize listed species or adversely modify critical habitat. Scholarship on Section 7 characterizes the process as unwaveringly rigid, the legal "hammer" forcing federal agencies to consider endangered species' needs when proposing operations and management plans for federally funded irrigation. In this paper, we identify barriers to an integrated approach to Section 7 implementation and characterize a set of strategies for overcoming its rigidity that may have broader applicability. We draw on lessons derived from the Klamath Basin along the Oregon-California border, where cross-scale processes and venues involving interagency collaboration among leaders in the U.S. Fish and Wildlife Service, the National Marine Fisheries Service, and the U.S. Bureau of Reclamation supported efforts to replace an ecologically and socially fragmented Upper Basin/Lower Basin approach to ESA implementation fraught with conflict. The result was the nation's first joint biological opinion (BiOp, which effectively institutionalized an adaptive, flexible, integrated approach to water sharing among competing interests. Keys to success included existing collaborative capacity related to shifting stakeholder networks, trust, and relationships and a shift in local agency culture facilitated by empathic leadership leading to a greater sense of shared responsibility for Section 7 compliance. A collaborative hydrologic modeling process enhanced participatory capacity, facilitated transformative social and technical learning, and cultivated greater understanding of the social-ecological system among key stakeholders. The 2013 joint BiOp exemplifies both

  14. Metabolic changes in droplet vitrified semen of wild endangered Persian sturgeon Acipenser persicus (Borodin, 1997).

    Science.gov (United States)

    Abed-Elmdoust, Amirreza; Farahmand, Hamid; Mojazi-Amiri, Bagher; Rafiee, Gholamreza; Rahimi, Ruhollah

    2017-06-01

    Comparative quantitative metabolite profiling can be used for better understanding of cell functions and dysfunctions in particular circumstances such as sperm banking which is an important approach for cryopreservation of endangered species. Cryopreservation techniques have some deleterious effects on spermatozoa which put the obtained results in controversy. Therefore, in the present study, quantitative 1 H NMR (Nuclear Magnetic Resonance) based metabolite profiling was conducted to evaluate metabolite changes related to energetics and some other detected metabolites in vitrified semen of critically endangered wild Acipenser persicus. The semen was diluted with extenders containing 0, 5, 10, and 15 μM of fish antifreeze protein (AFP) type III as a cryoprotectant. Semen-extenders were vitrified and stored for two days. Based on post-thaw motility duration and motility percentage assessments, two treatments with 10 μM and 0 μM of AFP had the highest and the lowest motility percentages respectively and they were objected to 1 H NMR spectroscopy investigations in order to reveal the extremes of the metabolites dynamic range. Univariate (ANOVA) and multivariate (PCA) analysis of the resulting metabolic profiles indicated significant changes (P > 0.05) in metabolites. The level of some metabolites including acetate, adenine, creatine, creatine phosphate, lactate, betaine, sarcosine, β-alanine and trimethylamine N-oxide significantly decreased in vitrified semen while some others such as creatinine, guanidinoacetate, N, N-dimethylglycine, and glycine significantly increased. There were also significant differences between vitrified treatments in levels of creatine, creatine phosphate, creatinine, glucose, guanidinoacetate, lactate, N, N-dimethylglycine, and glycine, suggesting how fish AFP type III can be effective as a cryoprotectant. Copyright © 2017 Elsevier Inc. All rights reserved.

  15. Irrigation drainwater effects on the endangered larval razorback sucker and bonytail in the middle Green River

    International Nuclear Information System (INIS)

    Hamilton, S.J.; Buhl, K.J.

    1994-01-01

    The Department of the Interior (DOI) irrigation drainwater investigation of the middle Green River of Utah reported that concentrations of boron, selenium, and zinc in water, bottom sediment, and biological tissues were sufficiently elevated to be potentially harmful to fish and wildlife. The major focus of the DOI study was in the Ashley Creek-Stewart Lake area near Jensen, utah. The middle Green River provides sensitive habitat for the endangered Colorado squawfish, razorback sucker, and bonytail. The authors conducted two 90-day chronic toxicity studies, one with razorback sucker, and the other with bonytail. Swimup larvae were exposed in a reconstituted water simulating the middle Green River. The toxicant mixture simulated the environmental ratio and concentrations of inorganics reported in the DOI study for the mouth of Ashley Creek-Stewart Lake outflow on the Green River, and was composed of arsenic, boron, copper, molybdenum, uranium, vanadium, selenate, selenite, and zinc. The mixture was tested at 1X, 2X, 4X, 8X, and 16X where X was the average expected environmental concentration. Razorback suckers had reduced survival after 40 days exposure to the inorganic mixture at 16X and after 60 days at 8X; whereas growth was reduced after 30 days at 8X and after 60 days at 4X. Bonytail had reduced survival after 20 days exposure at 16X, whereas growth was reduced after 60 days at 8X. These studies show that at environmentally realistic concentrations, the inorganic mixture simulating Ashley Creek-Stewart Lake outfall adversely affects larval endangered fish

  16. Patterns of presence and concentration of pesticides in fish and waters of the Júcar River (Eastern Spain).

    Science.gov (United States)

    Belenguer, Vicent; Martinez-Capel, Francisco; Masiá, Ana; Picó, Yolanda

    2014-01-30

    The Júcar River, in a typical Mediterranean Basin, is expected to suffer a decline in water quality and quantity as a consequence of the climate change. This study is focused on the presence and distribution of pesticides in water and fish, using the first extensive optimization and application of the QuEChERS method to determine pesticides in freshwater fish. Majority pesticides in water - in terms of presence and concentration - were dichlofenthion, chlorfenvinphos, imazalil, pyriproxyfen and prochloraz (associated with a frequent use in farming activities), as well as buprofezin, chlorpyriphos and hexythiazox. In fish, the main compounds were azinphos-ethyl, chlorpyriphos, diazinon, dimethoate and ethion. The analysis of bio-concentration in fish indicated differences by species. The maximum average concentration was detected in European eel (a critically endangered fish species). The wide presence of pesticides in water and fish suggests potential severe effects on fish populations and other biota in future scenarios of climate change, in a river basin with several endemic and endangered fish species. The potential effects of pesticides in combination with multiple stressors require further research to prioritize the management of specific chemicals and suggest effective restoration actions at the basin scale. Copyright © 2013 Elsevier B.V. All rights reserved.

  17. Canine distemper in endangered Ethiopian wolves.

    Science.gov (United States)

    Gordon, Christopher H; Banyard, Ashley C; Hussein, Alo; Laurenson, M Karen; Malcolm, James R; Marino, Jorgelina; Regassa, Fekede; Stewart, Anne-Marie E; Fooks, Anthony R; Sillero-Zubiri, Claudio

    2015-05-01

    The Ethiopian wolf (Canis simensis) is the world's rarest canid; ≈500 wolves remain. The largest population is found within the Bale Mountains National Park (BMNP) in southeastern Ethiopia, where conservation efforts have demonstrated the negative effect of rabies virus on wolf populations. We describe previously unreported infections with canine distemper virus (CDV) among these wolves during 2005-2006 and 2010. Death rates ranged from 43% to 68% in affected subpopulations and were higher for subadult than adult wolves (83%-87% vs. 34%-39%). The 2010 CDV outbreak started 20 months after a rabies outbreak, before the population had fully recovered, and led to the eradication of several focal packs in BMNP's Web Valley. The combined effect of rabies and CDV increases the chance of pack extinction, exacerbating the typically slow recovery of wolf populations, and represents a key extinction threat to populations of this highly endangered carnivore.

  18. Are LDC marketing units an endangered species?

    International Nuclear Information System (INIS)

    Kerr, J.

    1995-01-01

    Local distribution company (LDC) marketing affiliates are an ''endangered species,'' according to consultant Porter Bennett, president of Bentek Energy Research. This is true, he says, because the gas marketing industry is ''rapidly becoming a large-volume, low-margin business.'' As a result, the need for economies of scale will produce mergers in the gas marketing business until all that's left are six or 12 national companies. But Bruce Henning, A.G.A.'s chief economist, says don't bury LDC marketing units yet. Though he agrees that ''there is increasing pressure on marketers of energy services to reduce their margins to remain competitive,'' he adds that ''it's hard to say how big a company will have to be to capture the economies of scale necessary to be effective.'' These differing views are discussed in terms of size of company, the concerns about retail markets, and the trends towards mergers

  19. Strategies for conservation of endangered ecosystems

    International Nuclear Information System (INIS)

    Ashraf, M.; Hussain, M.; Ahmad, M.S.A.

    2012-01-01

    The planet Earth is known to host a rich biodiversity owing to its suitable environmental conditions for life and at a larger scale it is regarded as a major ecosystem. Healthy existence of living organisms in this ecosystem depends on proper functioning of all the associated environmental factors. Since millennia, living organisms have adapted to thrive under a limited range of environmental conditions. Nevertheless previous history of the earth and fossil records indicates that the biodiversity housed by the planet earth has experienced five major catastrophic extinctions due to change in physical environment. Even currently, it is undergoing sixth major extinction event mainly due to anthropogenic activities. The human activities are proving a dual menace for biodiversity. On the one hand, it is causing habitat loss through intensive deforestation, conversion of different natural plant communities for agriculture, and urbanization and industrialization. Moreover, it is resulting in habitat degradation by polluting both terrestrial and aquatic ecosystems, emitting air pollutants resulting in acid rains, ozone layer depletion, global warming, heavy metal contamination and eutrophication of water bodies. As a result, healthy existence of both terrestrial and aquatic ecosystems and their associated biodiversity is altogether threatened. Worldwide efforts are underway to conserve the threatened ecosystems and their related biodiversity. A number of international conventions have been held to conserve natural ecosystems. Pakistan being a signatory of these conventions has its obligation to join hands with international community to conserve the endangered ecosystems within as well as outside its bounds. Under the existing scenario the objective of organizing this symposium was to pinpoint the threats to endangered ecosystems of the world in general and those in Pakistan in particular, and to develop suitable strategies for conservation of such paralyzed ecosystems

  20. Effective Condition for Whole Testis Cryopreservation of Endangered Miho Spine Loach (Cobitis choii) Through the Optimization of Mud Loach (Misgurnus mizolepis) Whole Testis Cryopreservation Condition.

    Science.gov (United States)

    Kim, J J; Nam, Y K; Bang, I C; Gong, S P

      BACKGROUND: Miho spine loach (Cobitis choii) is an endangered Korean endemic fish. Whole testis cryopreservation is a good way for species preservation, but needs to the sacrifice of a large number of fish to optimize the freezing condition. Considering this limitation, a surrogate fish species was used for the protocol development. This study was to establish the effective condition for Miho spine loach whole testis cryopreservation by optimizing the conditions for whole testis cryopreservation in an allied species, mud loach (Misgurnus mizolepis). The condition for whole testis cryopreservation was optimized in mud loach first, and then the optimal condition was applied to Miho spine loach testes. The optimal condition for mud loach testis cryopreservation consists of the freezing medium containing 1.3 M dimethyl sulfoxide, 6% fetal bovine serum and 0.3 M trehalose, -1 C/min cooling rate and 26 degree C thawing temperature, which also permits effective cryopreservation of Miho spine loach testes. An effective cryopreservation condition for whole testis of the endangered Miho spine loach has been established by using mud loach as a surrogate fish.

  1. 77 FR 19552 - Endangered and Threatened Species; Range Extension for Endangered Central California Coast Coho...

    Science.gov (United States)

    2012-04-02

    ... stocking information for coho salmon in watersheds south of San Francisco Bay; comprehensive genetic data... genetic data from these fish. This information was considered by the BRT and was an important factor in... Francisco Bay could be in error because the genetic database did not include data for fish from the San...

  2. Effects of nonylphenol on key hormonal balances and histopathology of the endangered Caspian brown trout (Salmo trutta caspius).

    Science.gov (United States)

    Shirdel, Iman; Kalbassi, Mohammad Reza

    2016-01-01

    Endocrine disruptor chemicals (EDCs) potentially pose a hazard to endangered species. Evaluation of the sensitivity of these species to EDCs could be helpful for protecting their populations. So, the present study investigated the adverse effects of nonylphenol, an EDC, on the endocrine hormones and histopathology of male and female juvenile Caspian brown trout (Salmo trutta caspius) following 21 days of exposure to nominal concentrations of 1, 10 and 100 μg/l. The results showed that the HSI and plasma total calcium of male and female fishes exposed to 100 μg/l nonylphenol were significantly increased compared with the control groups (P0.05). No significant effect of nonylphenol exposure was observed on male plasma TSH levels (P>0.05), whereas, in females, nonylphenol at all concentrations significantly reduced TSH levels. A bell-shaped response was observed in male and female plasma GH levels. Moreover, various histopathological lesions were observed in gill and intestine tissues of fishes exposed to different nonylphenol concentrations. These results demonstrate the high sensitivity of this endangered species to even environmentally relevant concentrations of nonylphenol. Furthermore, Caspian brown trout could be used as bioindicators reflecting the toxicity of nonylphenol. Copyright © 2016 Elsevier Inc. All rights reserved.

  3. 76 FR 22677 - Endangered Species; File No. 14949

    Science.gov (United States)

    2011-04-22

    ... to provide information on the ecology and population dynamics of hawksbill and green turtles... permit: (1) Was applied for in good faith, (2) will not operate to the disadvantage of such endangered or...

  4. Ecological Risk Assessment Process under the Endangered Species Act

    Science.gov (United States)

    This document provides an overview of the Environmental Protection Agency’s (EPA) ecological risk assessment process for the evaluation of potential risk to endangered and threatened (listed) species from exposure to pesticides.

  5. Management of Maritime Communities for Threatened and Endangered Species

    National Research Council Canada - National Science Library

    Gehlhausen, Sophia

    1998-01-01

    ...). Since the DoD mission has not required large-scale urbanization of the coast, these ecosystems also provide high quality habitat for several federally threatened and endangered plant and animal species (TES...

  6. 77 FR 68809 - Endangered Species; Receipt of Applications for Permit

    Science.gov (United States)

    2012-11-16

    ... captive-bred male and one captive-bred female cheetah (Acinonyx jubatus) from the Hoedspruit Endangered... captive-bred female cheetah (Acinonyx jubatus) from the De Wildt Cheetah Breeding Center, South Africa...

  7. Viral Encephalopathy and Retinopathy in groupers (Epinephelus spp. in southern Italy: a threat for wild endangered species?

    Directory of Open Access Journals (Sweden)

    Vendramin Niccolò

    2013-01-01

    Full Text Available Abstract Background Betanodaviruses are the causative agents of Viral Encephalopathy and Retinopathy (VER. To date, more than 50 species have proved to be susceptible and among them, those found in genus Epinephelus are highly represented. Clinical disease outbreaks are generally characterized by typical nervous signs and significant mortalities mainly associated with aquaculture activities, although some concerns for the impact of this infection in wild fish have been raised. In this study, the authors present the first documented report describing an outbreak of VER in wild species in the Mediterranean basin. Case presentation In late summer - early winter 2011 (September-December, significant mortalities affecting wild Dusky grouper (Epinephelus marginatus, Golden grouper (Epinephelus costae and European sea bass (Dicentrarchus labrax were reported in the municipality of Santa Maria di Leuca (Northern Ionian Sea, Italy. The affected fish showed an abnormal swimming behavior and swollen abdomens. During this epizootic, five moribund fish showing clear neurological signs were captured and underwent laboratory investigations. Analytical results confirmed the diagnosis of VER in all the specimens. Genetic characterization classified all betanodavirus isolates as belonging to the RGNNV genotype, revealing a close genetic relationship with viral sequences obtained from diseased farmed fish reared in the same area in previous years. Conclusion The close relationship of the viral sequences between the isolates collected in wild affected fish and those isolated during clinical disease outbreaks in farmed fish in the same area in previous years suggests a persistent circulation of betanodaviruses and transmission between wild and farmed stocks. Further investigations are necessary to assess the risk of viral transmission between wild and farmed fish populations, particularly in marine protected areas where endangered species are present.

  8. 77 FR 61559 - Endangered and Threatened Wildlife; 90-Day Finding on a Petition To List Nassau Grouper as...

    Science.gov (United States)

    2012-10-10

    ... Petition To List Nassau Grouper as Threatened or Endangered Under the Endangered Species Act AGENCY... endangered under the Endangered Species Act (ESA). We find that the petition presents substantial scientific... the Endangered Species Act of 1973, as amended (16 U.S.C. 1531 et seq.). Dated: October 2, 2012. Alan...

  9. 77 FR 59582 - Endangered and Threatened Wildlife; 90-Day Finding on Petitions To List the Northeastern Pacific...

    Science.gov (United States)

    2012-09-28

    ... Threatened or Endangered Under the Endangered Species Act AGENCY: National Marine Fisheries Service (NMFS... carcharias) as a threatened or endangered distinct population segment (DPS) under the Endangered Species Act... under the U.S. Endangered Species Act'' because NatureServe assessments ``have different criteria...

  10. 76 FR 49412 - Endangered and Threatened Wildlife; 90-Day Finding on a Petition To List the Saltmarsh Topminnow...

    Science.gov (United States)

    2011-08-10

    ... Threatened or Endangered Under the Endangered Species Act AGENCY: National Marine Fisheries Service (NMFS... endangered under the Endangered Species Act (ESA). We find that the petition presents substantial scientific.... Endangered Species Act'' because NatureServe assessments ``have different criteria, evidence requirements...

  11. 77 FR 25687 - Endangered and Threatened Wildlife; 90-Day Finding on a Petition to List Speckled Hind as...

    Science.gov (United States)

    2012-05-01

    ... Hind as Threatened or Endangered Under the Endangered Species Act AGENCY: National Marine Fisheries... speckled hind (Epinephelus drummondhayi) as threatened or endangered under the Endangered Species Act (ESA... under the U.S. Endangered Species Act'' because NatureServe assessments ``have different criteria...

  12. 78 FR 69033 - Endangered and Threatened Wildlife; 90-Day Finding on Petitions To List the Pinto Abalone as...

    Science.gov (United States)

    2013-11-18

    ... Petitions To List the Pinto Abalone as Threatened or Endangered Under the Endangered Species Act AGENCY... kamtschatkana) as a threatened or endangered species under the Endangered Species Act (ESA) and to designate... recommendation by NatureServe for listing under the U.S. Endangered Species Act'' because NatureServe assessments...

  13. 76 FR 7820 - Endangered and Threatened Wildlife; 90-Day Finding on a Petition to List the Texas Pipefish as...

    Science.gov (United States)

    2011-02-11

    ... Pipefish as Threatened or Endangered Under the Endangered Species Act AGENCY: National Marine Fisheries... Texas pipefish (Syngnathus affinis) as threatened or endangered under the Endangered Species Act (ESA... NatureServe for listing under the U.S. Endangered Species Act'' because NatureServe assessments ``have...

  14. 78 FR 6299 - Endangered and Threatened Wildlife; 90-Day Finding on Two Petitions To List White Marlin as...

    Science.gov (United States)

    2013-01-30

    ... Marlin as Threatened or Endangered Under the Endangered Species Act AGENCY: National Marine Fisheries... white marlin (Kajikia albidus) as threatened or endangered under the Endangered Species Act (ESA). We... do ``not constitute a recommendation by NatureServe for listing under the U.S. Endangered Species Act...

  15. 78 FR 10601 - Endangered and Threatened Wildlife; 90-Day Finding on a Petition to List 44 Species of Corals as...

    Science.gov (United States)

    2013-02-14

    ... Species of Corals as Threatened or Endangered Under the Endangered Species Act AGENCY: National Marine... list 44 species of corals off Alaska as threatened or endangered under the Endangered Species Act (ESA... Coral Species under the Endangered Species Act'' but it provides information regarding 44 taxa. We are...

  16. Endangered, rare and endemic medicinal plants of the Kopetdag

    OpenAIRE

    AKMURADOV ALLAMURAD; SHAIYMOV BABAGULY; HALMEDOV BAZAR; YAKUBOV ATABEG; HALLIYEVA GULYAIYM

    2016-01-01

    The article presents some information of the place of growing of the endangered, rare and endemic medicinal plants of the Kopetdag. A monitoring has been carried out and the bioecological peculiarities, resource characteristics and modern state of the natural population of the most important species have been studied. Some scientifically based ways of protection and introduction into culture have been worked out to preserve the endangered, rare and endemic medicinal plants of the region.

  17. Generation of Induced Pluripotent Stem Cells from Mammalian Endangered Species.

    Science.gov (United States)

    Ben-Nun, Inbar Friedrich; Montague, Susanne C; Houck, Marlys L; Ryder, Oliver; Loring, Jeanne F

    2015-01-01

    For some highly endangered species there are too few reproductively capable animals to maintain adequate genetic diversity, and extraordinary measures are necessary to prevent their extinction. Cellular reprogramming is a means to capture the genomes of individual animals as induced pluripotent stem cells (iPSCs), which may eventually facilitate reintroduction of genetic material into breeding populations. Here, we describe a method for generating iPSCs from fibroblasts of mammalian endangered species.

  18. Hawaiian Fish Distributors Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is proprietary sales data from one Kona-based fish dealer for August 1986 to Decemeber 1988. Fishing was generally around Kona. This is Dealer Data and is...

  19. Pittsburgh Fish Fry Locations

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — Lenten Fish Fry records for the Greater Pittsburgh region. Data is collected before and during the Lenten fish fry season each year by Code for Pittsburgh. Data is...

  20. Fishing fleet profiling methodology

    National Research Council Canada - National Science Library

    Ferraris, Jocelyne

    2002-01-01

    A fishing fleet profile aims tho assist in understanding the complexity and structure of fisheries from a technical and socio-economic point of view, or from the point of view of fishing strategies...

  1. Poisoning - fish and shellfish

    Science.gov (United States)

    Fish poisoning; Dinoflagellate poisoning; Seafood contamination; Paralytic shellfish poisoning; Ciguatera poisoning ... algae and algae-like organisms called dinoflagellates. Small fish that eat the algae become contaminated. If larger ...

  2. Scorpion fish sting

    Science.gov (United States)

    ... page: //medlineplus.gov/ency/article/002849.htm Scorpion fish sting To use the sharing features on this page, please enable JavaScript. Scorpion fish are members of the family Scorpaenidae, which includes ...

  3. Fish population dynamics

    National Research Council Canada - National Science Library

    Gulland, J. A

    1977-01-01

    This book describes how the dynamics of fish populations can be analysed in terms of the factors affecting their rates of growth, mortality and reproduction, with particular emphasis on the effects of fishing...

  4. Subordinate Males Sire Offspring in Madagascar Fish-eagle (Haliaeetus Vociferoides) Polyandrous Breeding Groups

    OpenAIRE

    Tingay, Ruth E.; Culver, Melanie; Hallerman, Eric M.; Fraser, James D.; Watson, Richard T.

    2002-01-01

    The island endemic Madagascar Fish-Eagle (Haliaeetus vociferoides) is one of the most endangered birds of prey. Certain populations in west-central Madagascar sometimes exhibit a third, and sometimes a fourth, adult involved in breeding activities at a nest. We applied DNA fingerprinting to assess relatedness among 17 individuals at four nests. In all nests with young, a subordinate rather than the dominant male sired the offspring. Within-nest relatedness comparisons showed that some dominan...

  5. Immunity to Fish Rhabdoviruses

    OpenAIRE

    Purcell, Maureen K.; Laing, Kerry J.; Winton, James R.

    2012-01-01

    Members of the family Rhabdoviridae are single-stranded RNA viruses and globally important pathogens of wild and cultured fish and thus relatively well studied in their respective hosts or other model systems. Here, we review the protective immune mechanisms that fish mount in response to rhabdovirus infections. Teleost fish possess the principal components of innate and adaptive immunity found in other vertebrates. Neutralizing antibodies are critical for long-term protection from fish rhabd...

  6. On the occurrence of the Fishing Cat Prionailurus viverrinus Bennet, 1833 (Carnivora: Felidae) in coastal Kerala, India

    OpenAIRE

    R. Janardhanan; S. Mukherjee; P.V. Karunakaran; R. Athreya

    2014-01-01

    The Fishing Cat Prionailurus viverrinus is classified as Endangered in the IUCN Red List and yet its distribution range within India is not resolved. In spite of its potential habitat being present in coastal Kerala, there are only a few, unsubstantiated records of the cat. Moreover, its occurrence in Sri Lanka strengthens the possibility of its presence (historical or current population) in southern India, including Kerala. This survey was conducted to assess the occurrence of the Fishing Ca...

  7. Fish eye optics

    Science.gov (United States)

    Hudec, R.; Michalova, S.

    2017-07-01

    We report on small student (high—school) project of the Czech Academy of Sciences dealing with animal (fish) eyes and possible application in science and technology. Albeit most fishes have refractive eyes, the recent discoveries confirm that some fishes have reflective eyes with strange arrangements as well.

  8. Lunar Gene Bank for Endangered Species

    Science.gov (United States)

    Swain, Ramakrushna

    2016-07-01

    Introduction: Before the dawn of the 22nd century, we face the huge risk of losing our genetic heritage accumulated during aeons of evolution. The losses include hundreds of vertebrates, human gene pools, hundreds of thousands of plants and over a million insect species. As we have observed, adequate conservation of habitat is unfeasible and active breeding programs cover only a handful of the many thousand species threatened. We propose cryopreservation of germplasms by constructing a cDNA library based gene bank for endangered species in the permanently shadowed polar lunar craters that would provide immunity from both natural disadvantages and humanitarian intrusions. Rationale: Under such alarming circumstances, we turned to cryopreservation as an option but over thousands of years economic depression, sabotage, conflicts, warfare or even a brief disruption to the precise cryopreservation can hamper the storage of genetic samples.When we are considering conservation it is always preferable to go for a more secure and permanent solution. It was found out that the climatic and strategic location of the lunar polar craters are adequately hospitable, remote and free of maintenance and human observation as they provide naturally cryogenic temperature, reduced gravity and vacuum environment, non-reactive surface, safety from celestial intrusion and permanent shadow which doesn't allow the temperature to fluctuate thus providing most suitable storage facilities for the germplasms. PSRs provide steady temperature of 40- 60K and immunity to earthquakes due to low seismic activity. At these sites, burial in one meter or more of the regolith will provide protection against the solar wind, solar and galactic cosmic rays and micrometeorite impact. It provides the minimum necessary barrier from human intervention and at the same time enables easy retrieval for future usage. Genetic samples of endangered species can enable restoration even after its extinction. Preserved

  9. The Army and the Endangered Species Act: Who’s Endangering Whom?

    Science.gov (United States)

    1993-04-01

    beatles , and other insects it discovers within the bark or sapwood of a tree. 0 50 The RCWs are specialists among specialists, in that they are * the ...trees as well. Their diet consists mainly of ants and beatles discovered within the bark and sapwood of pine trees. Older trees provide better foraging...THIS SHEET AND RETRrN TO mTlC-FDAC DTIC n 70A DOCLUMMT PROCESSING s]rL=Tssu~y•m~~ LOAN DOCUMENT THE ARMY AND THE ENDANGERED SPECIES ACT: WHO’ S

  10. Impact of black rhinoceros (Diceros bicornis minor) on a local population of Euphorbia bothae in the Great Fish River Reserve, South Africa

    NARCIS (Netherlands)

    Luske, B.L.; Mertens, T.; Lent, P.C.; Boer, de W.F.; Prins, H.H.T.

    2009-01-01

    In the Great Fish River Reserve, South Africa, black rhinoceros (Diceros bicornis minor) feed extensively on a local population of Euphorbia bothae. Maintaining the endangered black rhinoceros and the protected E. bothae population are both conservation priorities of the reserve. Therefore, the

  11. Endangered species: where leatherback turtles meet fisheries.

    OpenAIRE

    Ferraroli , S.; Georges , J.-Y.; Gaspar , P.; Le Maho , Y.

    2004-01-01

    International audience; The dramatic worldwide decline in populations of the leatherback turtle (Dermochelys coriacea) is largely due to the high mortality associated with their interaction with fisheries, so a reduction of this overlap is critical to their survival. The discovery of narrow migration corridors used by the leatherbacks in the Pacific Ocean raised the possibility of protecting the turtles by restricting fishing in these key areas. Here we use satellite tracking to show that the...

  12. Turbine related fish mortality

    International Nuclear Information System (INIS)

    Eicher, G.J.

    1993-01-01

    A literature review was conducted to assess the factors affecting turbine-related fish mortality. The mechanics of fish passage through a turbine is outlined, and various turbine related stresses are described, including pressure and shear effects, hydraulic head, turbine efficiency, and tailwater level. The methodologies used in determining the effects of fish passage are evaluated. The necessity of adequate controls in each test is noted. It is concluded that mortality is the result of several factors such as hardiness of study fish, fish size, concentrations of dissolved gases, and amounts of cavitation. Comparisons between Francis and Kaplan turbines indicate little difference in percent mortality. 27 refs., 5 figs

  13. Maintenance of Genetic Diversity in Natural Spawning of Captively-Reared Endangered Sockeye Salmon, Oncorhynchus nerka

    Directory of Open Access Journals (Sweden)

    Ruth E. Withler

    2014-06-01

    Full Text Available Captive propagation of Pacific salmon is routine, but few captive breeding programs have been conducted to successfully re-establish extirpated wild populations. A captive breeding program for endangered Sakinaw Lake sockeye salmon was established from 84 adults between 2002 and 2005, just prior to extirpation of the wild population. After several years of absence, sockeye salmon released from captivity returned to spawn in Sakinaw Lake in 2010 and in all years thereafter. Freshwater survival rates of released hatchery fry and naturally produced progeny of reintroduced sockeye salmon have not limited abundance of the reintroduced population. In contrast, marine survival rates for Sakinaw sockeye salmon have been <1%, a level that precludes population restoration in the absence of supplementation. Genetic diversity commensurate with the number of parental founders has been maintained in captivity. The 517 adult second-generation captive fish that spawned in Sakinaw Lake in 2011 produced a smolt emigration of almost 28,000 juvenile fish with an effective population size of 132. Allelic richness and gene diversity levels in the smolts were similar to those observed in captivity. This indicates genetic contributions from all or most founding parents have been retained both in captivity and in the nascent reintroduced natural population.

  14. Morphological observation and length-weight relationship of critically endangered riverine catfish Rita rita (Hamilton).

    Science.gov (United States)

    Amin, M R; Mollah, M F A; Taslima, K; Muhammadullah

    2014-01-15

    The experiment was conducted to investigate the morphological status of the critically endangered riverine catfish Rita rita using morphometric and meristic traits. About 158 species of Rita were collected from the old Brahmaputra river in Mymensingh district and were studied in the laboratory of the Fisheries Biology and Genetics Department, Bangladesh Agricultural University. Measurement of length and weight of Rita were recorded by using measuring scale and electric balance respectively. Significant curvilinear relationship existed between total length and other morphometric characters and between head length and other characters of the head. Relationships between total length and various body measurements of the fish were highly significant (p < 0.01) except the relationship between total length and pelvic fin length of male fish (p < 0.05). In case of meristic characters-dorsal fin rays, pelvic fin rays, pectoral fin rays, anal fin rays, caudal fin rays, number of vertebrae and branchiostegal rays were found to be more or less similar except slight differences. The values of condition factors (k) in the total length body-weight relationships for female and male were found to be 0.41 and 0.38, respectively. The mean values of relative condition factors (kn) were 1.0 and 1.005 for female and male, respectively.

  15. 76 FR 40822 - Endangered and Threatened Wildlife and Plants; Endangered Status for the Largetooth Sawfish

    Science.gov (United States)

    2011-07-12

    ....S. Fish and Wildlife Service (USFWS) Policy for Evaluating Conservation Efforts When Making Listing Decisions (PECE policy; 68 FR 15100; March 28, 2003) to determine their certainties of implementation and...

  16. 77 FR 60749 - Endangered and Threatened Wildlife and Plants; Proposed Endangered Species Status for the Florida...

    Science.gov (United States)

    2012-10-04

    ...: FWS-R4-ES-2012-0078; Division of Policy and Directives Management; U.S. Fish and Wildlife Service... majority of the approximately 80 specimens of E. glaucinus from Venezuela housed in the U.S. National...

  17. Fish allergy: in review.

    Science.gov (United States)

    Sharp, Michael F; Lopata, Andreas L

    2014-06-01

    Globally, the rising consumption of fish and its derivatives, due to its nutritional value and divergence of international cuisines, has led to an increase in reports of adverse reactions to fish. Reactions to fish are not only mediated by the immune system causing allergies, but are often caused by various toxins and parasites including ciguatera and Anisakis. Allergic reactions to fish can be serious and life threatening and children usually do not outgrow this type of food allergy. The route of exposure is not only restricted to ingestion but include manual handling and inhalation of cooking vapors in the domestic and occupational environment. Prevalence rates of self-reported fish allergy range from 0.2 to 2.29 % in the general population, but can reach up to 8 % among fish processing workers. Fish allergy seems to vary with geographical eating habits, type of fish processing, and fish species exposure. The major fish allergen characterized is parvalbumin in addition to several less well-known allergens. This contemporary review discusses interesting and new findings in the area of fish allergy including demographics, novel allergens identified, immunological mechanisms of sensitization, and innovative approaches in diagnosing and managing this life-long disease.

  18. Do Fish Resist?

    Directory of Open Access Journals (Sweden)

    Dinesh Joseph Wadiwel

    2016-03-01

    Full Text Available There have been a number of scientific studies on the question of whether fish feel pain. Some have suggested that some fish indeed do feel pain and that this has significant welfare implications (2003. Others have argued that fish do not have the brain development necessary to feel pain. In terms of number of animals killed, the slaughter of sea animals for human consumption significantly exceeds that of any land animals that we use for food, and sea animal slaughter practices frequently lack any basic welfare protections. If fish can be shown to feel pain—or more importantly, if humans can agree that fish feel pain—then this would place a significant question mark over many contemporary fishing practices.  This article substitutes the question 'Do Fish Feel Pain?' with an alternative: 'Do Fish Resist?' It explores the conceptual problems of understanding fish resistance, and the politics of epistemology that surrounds and seeks to develop a conceptual framework for understanding fish resistance to human capture by exploring the development of fishing technologies - the hook, the net and contemporary aquaculture.

  19. Augmented fish health monitoring

    International Nuclear Information System (INIS)

    Michak, P.; Rogers, R.; Amos, K.

    1991-05-01

    The Bonneville Power Administration (BPA) initiated the Augmented Fish Health Monitoring project in 1986. This project was a five year interagency project involving fish rearing agencies in the Columbia Basin. Historically, all agencies involved with fish health in the Columbia Basin were conducting various levels of fish health monitoring, pathogen screening and collection. The goals of this project were; to identify, develop and implement a standardized level of fish health methodologies, develop a common data collection and reporting format in the area of artificial production, evaluate and monitor water quality, improve communications between agencies and provide annual evaluation of fish health information for production of healthier smolts. This completion report will contain a project evaluation, review of the goals of the project, evaluation of the specific fish health analyses, an overview of highlights of the project and concluding remarks. 8 refs., 1 fig., 4 tabs

  20. North Slope, Alaska ESI: FISH (Fish Polygons)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set contains sensitive biological resource data for marine, estuarine, anadromous, and freshwater fish species for the North Slope of Alaska. Vector...