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Sample records for acanthocephala

  1. Acanthocephala Larvae parasitizing Ameiva ameiva ameiva (Linnaeus, 1758) (Squamata: Teiidae)

    Lilian Cristina Macedo; Francisco Tiago de Vasconcelos Melo; Teresa Cristina Sauer Ávila-Pires; Elane Guerreiro Giese; Jeannie Nascimento dos Santos

    2016-01-01

    Abstract Knowledge concerning the taxonomy and biology of species of Acanthocephala, helminth parasites of the helminth species of the phylum Acanthocephala, parasites of lizards in Brazilian Amazonia, is still insufficient, but reports of Acanthocephala in reptiles are becoming increasingly common in the literature. Cystacanth-stage Acanthocephalan larvae have been found in the visceral peritoneum during necropsy of Ameiva ameiva ameivalizards from the “Osvaldo Rodrigues da Cunha” Herpetolog...

  2. Acanthocephala Parasite (Profilicollis spp.) Loads in Correlation to Pacific Mole Crab (Emerita analoga) Size

    Cheng, T.; Huang, S.; Galathe, M.; Jenkins, M.; Ramirez, A.; Crosby, L.; Barrera, J.; FitzHoward, S.

    2013-12-01

    Since 2002, San Francisco Bay students have been conducting marine ecosystem monitoring through a joint project with the Long-term Monitoring Program and Experiential Training for Students (LiMPETS), in conjunction with the Gulf of Farallones National Marine Sanctuary. Each year students collect population and demographic data on Pacific mole crabs (Emerita analoga), an indicator species that lives in the sandy beach habitat in temperate regions along the Pacific Ocean. Pacific mole crabs are filter feeding crustaceans that inhabit the intertidal swash zone and are known to be an intermediate host for parasitic ';spiny-headed' worms in the phylum Acanthocephala (Profilicollis spp.). Sampling takes place during their reproductive period, which occurs from spring to fall, and includes measuring total body length of the Pacific mole crabs and dissecting them to determine presence of Acanthocephalan parasites. We hypothesize that due to larger body mass, larger Pacific mole crabs will have a greater number of Acanthocephala parasites.We conducted several analyses using the LiMPETS long-term data. Specifically, we compared body length, crab gender, and parasite abundance from Pacific mole crabs sampled from four beaches located in the county and city of San Francisco. Our results indicated that larger Pacific mole crabs do not necessarily have more parasites, but are more likely to have at least one parasite, while female Pacific mole crabs carrying eggs, have more parasites than males or females without eggs. We also found that parasite loads per mole crab was highest in the spring. Further analysis will be conducted to determine factors affecting Pacific mole crab parasite loads. Studying Pacific mole crabs help evaluate the health of California's intertidal systems and how human activities, geologic changes, and climate changes all make huge impacts to the intertidal ecosystems.

  3. Recent Studies on Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae), in Prochilodus lineatus Valenciennes, 1836, from Volta Grande Reservoir, MG, Brazil

    Martins, M. L.; FUJIMOTO R. Y.; P. M. ANDRADE; M. Tavares-Dias

    2000-01-01

    The present work described helminth parasites of curimbatá, Prochilodus lineatus Valenciennes, 1836 from Volta Grande Reservoir, MG, Brazil. Eighteen fishes with average 46.7 ± 1.1 cm length and 1,674.8 ± 75.6 g weight were collected. Of the analysed fishes, 15 were parasitized with acanthocephalans in the intestine, showing a prevalence of 83.3%. The helminth was identified as Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae). It differs from other species in dime...

  4. Nueva especie de Mediorhynchus (Acanthocephala, Gigantorhynchidae en Turdus chiguanco (Turdidae de Junín, Perú

    Rocío Moya

    2012-02-01

    Full Text Available Se describe una nueva especie de Mediorhynchus (Acanthocephala, Gigantorhynchidae basada en 36 especímenes colectados de 4 individuos de Turdus chiguanco (Lafresnaye & D’Orbigny, 1837. Las aves fueron capturadas en el distrito de Muqui, provincia de Jauja, Junín, Perú. La nueva especie, Mediorhynchus peruensis se caracteriza por la armadura de la probóscide y la longitud de los lemniscos que se extienden hasta la parte media o posterior del testículo anterior en el macho y hasta la parte media anterior del cuerpo en la hembra.

  5. Checklist of the phyla Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (Tunicata, Cephalochordata, and Hemichordata) from the coasts of Turkey

    ÇINAR, Melih Ertan

    2014-01-01

    In this paper, the current status of the species diversity of 13 phyla, namely Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Myxozoa, Tardigrada, Cephalorhyncha, Nemertea, Echiura, Brachiopoda, Phoronida, Chaetognatha, and Chordata (invertebrates, only Tunicata, Cephalochordata, and Hemichordata) along the coasts of Turkey is reviewed. Platyhelminthes was represented by 186 species, Chordata by 64 species, Nemertea by 26 species, Nematoda by 20 species, Xenacoelomorpha by 11 spe...

  6. The helminth fauna of the common seal (Phoca vitulina vitulina, Linné, 1758) from the Wadden Sea in Lower Saxony. Part 1: Trematodes, cestodes and acanthocephala.

    Strauss, V; Claussen, D; Jäger, M; Ising, S; Schnieder, T; Stoye, M

    1991-11-01

    Between August 1988 and January 1989 110 common seals found dead along the coast of Lower Saxony were investigated for the occurrence of trematodes, cestodes and acanthocephala. Two fluke species, Cryptocotyle lingua Creplin, 1825 and Phagicola septentrionalis Van Den Broek, 1967, two tapeworm species Diphyllobothrium cordatum Leuckart, 1863 and Diphyllobothrium elegans Krabbe, 1865, and the acanthocephala species Corynosoma strumosum Rudolphi, 1802 were found. Phagicola septentrionalis and the cestodes were always found together with Cryptocotyle lingua. The prevalence of Phagicola septentrionalis, the diphyllobothriids and the acanthocephala increased with increasing age of the pinniped host. The worm counts of all species appeared to increase with increasing age of the host. The adult male seals were more often infested with Phagicola septentrionalis and cestodes than the female adults and the younger pinnipeds. There was no correlation between blubber thickness of the seals and parasitic infection. The prevalence of the diphyllobothriids and the intensity of the infection with acanthocephala were higher in seals found in the eastern part of the Wadden Sea. PMID:1789021

  7. Prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) in Prochilodus lineatus Valenciennes, 1836 from Volta Grande Reservoir, MG, Brazil

    Martins, M. L.; F. R. Moraes; FUJIMOTO R. Y.; ONAKA E. M.; QUINTANA C. I. F.

    2001-01-01

    The present work studied the prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) from curimbatá, Prochilodus lineatus Valenciennes, 1836. Eighteen fishes with averages of 46.7 + 1.1 cm length and 1,674.8 + 75.6 g weight were collected with net, bimonthly from December 1995 thru December 1996 in the hydroelectric power station of Volta Grande Reservoir (Cemig), Minas Gerais, Brazil. From analysed fishes, 15 were infected with acanthoce...

  8. Recent Studies on Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae), in Prochilodus lineatus Valenciennes, 1836, from Volta Grande Reservoir, MG, Brazil Estudos recentes sobre Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae), em Prochilodus lineatus Valenciennes, 1836, do Reservatório de Volta Grande, MG, Brasil

    Martins, M. L.; FUJIMOTO R. Y.; P. M. ANDRADE; M. Tavares-Dias

    2000-01-01

    The present work described helminth parasites of curimbatá, Prochilodus lineatus Valenciennes, 1836 from Volta Grande Reservoir, MG, Brazil. Eighteen fishes with average 46.7 ± 1.1 cm length and 1,674.8 ± 75.6 g weight were collected. Of the analysed fishes, 15 were parasitized with acanthocephalans in the intestine, showing a prevalence of 83.3%. The helminth was identified as Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae). It differs from other species in dime...

  9. Prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) in Prochilodus lineatus Valenciennes, 1836 from Volta Grande Reservoir, MG, Brazil Prevalência e histopatologia de Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) em Prochilodus lineatus Valenciennes, 1836 do Reservatório de Volta Grande, MG, Brasil

    Martins, M. L.; F. R. Moraes; FUJIMOTO R. Y.; ONAKA E. M.; QUINTANA C. I. F.

    2001-01-01

    The present work studied the prevalence and histopathology of Neoechinorhynchus curemai Noronha, 1973 (Acanthocephala: Neoechinorhynchidae) from curimbatá, Prochilodus lineatus Valenciennes, 1836. Eighteen fishes with averages of 46.7 + 1.1 cm length and 1,674.8 + 75.6 g weight were collected with net, bimonthly from December 1995 thru December 1996 in the hydroelectric power station of Volta Grande Reservoir (Cemig), Minas Gerais, Brazil. From analysed fishes, 15 were infected with acanthoce...

  10. Metazoan parasites of Mystus vittatus (Bloch) of River Godavari with description of a new species of Acanthocephala, Raosentis godavarensis sp. nov.

    Vankara, Anu Prasanna; Vijayalakshmi, C

    2009-12-01

    A total of 9 metazoan parasitic species were identified from Mystus vittatus (Bloch) in river Godavari during 2005-2007 including 2 monogeneans, 2 digeneans, 3 acanthocephalans and 2 copepods. Two species of monogeneans (Bifurcohaptor indicus and Thaparocleidus tengra), digeneans (Haplorchoides macrones and metacercariae of Isoparorchis hypselobagri), an acanthocephalan (Raosentis podderi) found during the present study are of common occurrence in this fish. M. vittatus constitutes a new host record for an acanthocephalan, Raosentis thapari and 2 copepods, Argulus striatus and Lamproglena hospetensis. The occurrence of A. striatus represents unusual for M. vittatus. A new species of acanthocephala, Raosentis godavarensis sp. nov is reported, described and illustrated. PMID:23129893

  11. Ocorrência de Acanthocephala em Leontopithecus (Lesson, 1840, cativos: aspectos clínico-patológicos. Callitrichidae-Primates Acanthocephala infections in captives lion tamarins Leontopithecus (Lesson, 1840: clinical pathologic aspects. Callitrichidae-Primates

    L. Pissinatti

    2007-12-01

    Full Text Available Estudaram-se achados de necropsia de 454 espécimens de Leontopithecus. Quatorze (3,1% apresentaram-se infectados por acantocéfalos intestinais identificados como Prosthenorchis elegans (Diesing, 1861. Não foram observadas diferenças na ocorrência do parasito quanto à espécie, origem - cativos ou selvagens - e sexo. Clinicamente os animais apresentaram-se com o pelame eriçado, apatia, inapetência, dores abdominais e diarréia. Em dois animais parasitados (14,2%, observou-se perfuração da parede intestinal. As lesões encontradas caracterizaram-se por uma grave enterite ulcerativa. A ocorrência desses parasitos reforça a necessidade do estabelecimento de protocolos sanitários rígidos no manejo das espécies de primatas do neotrópico.This study assessed the autopsy findings of 454 Leontopithecus specimens, 14 of which (3.1% were infected by intestinal Acanthocephala identified as Prosthenorchis elegans (Diesing, 1861. No difference in the occurrence of the parasite was observed regarding the species, origin (captive or wild and sex of the lion tamarins. Clinically, the animals had spiked coat, apathy, inappetence, abdominal pain and diarrhea. Two of the parasitized animals (14.2% had perforation of the intestinal wall. The lesions found were characterized as a severe ulcerative enteritis. The occurrence of such parasites highlights the need for establishing strict sanitary protocols for the management of the neotropical primate species.

  12. Ultrastructural study of spermiogenesis and the spermatozoon of Acanthocephaloides incrassatus (Molin, 1858) (Acanthocephala, Paleacanthocephala, Arhythmacanthidae) from Anguilla anguilla (Pisces, Teleostei) in Urbino ponds (Corsica Island).

    Foata, J; Quilichini, Y; Dal Pos, N; Greani, S; Marchand, B

    2012-07-01

    This study deals with first ultrastructure features of Acanthocephaloides incrassatus (Paleacanthocephala, Arhythmacanthidae), a parasite of the fish Anguilla anguilla, reported for the first time in a Mediterranean pond. The spermiogenesis of A. incrassatus shows original specificities which have never been pointed out to this day in ultrastructural studies on spermiogenesis: the centriolar derivative is divided into two parts of different densities: an electron-dense, and the other, electron-lucent; a ring form has been observed on each side of the axoneme; a centriole with one central element. After the elaboration of a flagellum of 9+2 pattern, the centriole migrates in a nuclear groove. Rapidly, the centriole disappears. Then, the flagellum migration occurs by a series of processes and gives rise to a spermatozoon. The spermatozoon of A. incrassatus presents its own specificities: it exhibits an evolution of the centriolar derivative characterized by only nine peripheral elements deprived of a central element in the anterior part, then nine peripheral and one central element, and finally, nine peripheral elements with two central elements. An assumption is emitted on a probable correspondence of the evolution of the derivative centriolar during the spermiogenesis and the evolution that occurs in the spermatozoon. Protein granules also show different sizes and forms, full or emptied of their contents compared with data on other Acanthocephala. PMID:22307764

  13. Post-cyclic transmission in Acanthocephalus tumescens (Acanthocephala: Echinorhynchidae).

    Rauque, Carlos A; Semenas, Liliana G; Viozzi, Gustavo P

    2002-01-01

    The aim of this study was to investigate the post-cyclic transmission of Acanthocephalus tumescens (von Linstow, 1896) from Galaxias maculatus Jenyns to Oncorhynchus mykiss (Walbaum). Wild G. maculatus naturally infected with A. tumescens were fed to cultured rainbow trout, which were sacrificed at the second, third and fourth weeks post infection. Normally attached male and female acanthocephalans were recovered alive from the intestine of rainbow trout. Parasites survive at least four weeks post infection, growing and attaining full sexual maturity. Prevalence and mean intensity generally decreased after infection. A. tumescens is the eighth acanthocephalan species in which post-cyclic transmission has been proven. PMID:12194485

  14. First occurrence of Quadrigyrus nickoli (Acanthocephala in the ornamental fish Hyphessobrycon eques Primeira ocorrência de Quadrigyrus nickoli (Acanthocephala no peixe ornamental Hyphessobrycon eques

    Rodrigo Yudi Fujimoto

    2013-03-01

    Full Text Available The objective of this work was to report the first seasonal occurrence of the acanthocephalan Quadrigyrus nickoli Schmidt & Hugghins, 1973 (Quadrigyridae, in the “Mato Grosso” Hyphessobrycon eques (Characidae (Steindachner, 1882, collected from the Chumucuí River, state of Pará, Brazil. The fish were collected between July 2006 (rainy season and June 2007 (dry season and were examined for parasites using pattern techniques. A total of 75 parasites were found in the stomach and intestine. Among 83 fish examined (50 in the dry season and 33 in the rainy season, 22 were parasitized by cystacanths of Q. nickoli. The importance of H. eques as a paratenic host for Q. nickoli is discussed. This is the first study on the biology of and infection by Q. nickoli occurring in the eastern Amazon region.O objetivo desse trabalho foi registrar a primeira ocorrência sazonal do acantocefala Quadrigyrus nickoli Schmidt & Hugghins, 1973 (Quadrigyridae no peixe “Mato Grosso”, Hyphessobrycon eques Steindachner, 1882 (Characidae, capturados no Rio Chumucuí, região Bragantina, Pará, Brasil. Os peixes foram coletados no período de julho∕2006 a junho∕2007 e examinados com técnica padrão para detecção de parasitas. Um total de 75 parasitas foram encontrados no estômago e intestino. Dos 83 peixes capturados (50 na estação seca e 33 na chuvosa, 22 estavam parasitados por cistacantos de Quadrigyrus nickoli. No presente trabalho discute-se a importância do H. eques como hospedeiro paratênico para Quadrigyrus nickoli. Os presentes dados constituem o primeiro estudo sobre a biologia e a infecção de Q. nickoli na Amazônia oriental.

  15. Phylogenetic relationships among Neoechinorhynchus species (Acanthocephala: Neoechinorhynchidae) from North-East Asia based on molecular data.

    Malyarchuk, Boris; Derenko, Miroslava; Mikhailova, Ekaterina; Denisova, Galina

    2014-02-01

    Phylogenetic and statistical analyses of DNA sequences of two genes, cytochrome oxidase subunit 1 (cox 1) of the mitochondrial DNA and 18S subunit of the nuclear ribosomal RNA (18S rRNA), was used to characterize Neoechinorhynchus species from fishes collected in different localities of North-East Asia. It has been found that four species can be clearly recognized using molecular markers-Neoechinorhynchus tumidus, Neoechinorhynchus beringianus, Neoechinorhynchus simansularis and Neoechinorhynchus salmonis. 18S sequences ascribed to Neoechinorhynchus crassus specimens from North-East Asia were identical to those of N. tumidus, but differed substantially from North American N. crassus. We renamed North-East Asian N. crassus specimens to N. sp., although the possibility that they represent a subspecies of N. tumidus cannot be excluded, taking into account a relatively small distance between cox 1 sequences of North-East Asian specimens of N. crassus and N. tumidus. Maximum likelihood, maximum parsimony and Bayesian inference analyses were performed for phylogeny reconstruction. All the phylogenetic trees showed that North-East Asian species of Neoechinorhynchus analyzed in this study represent independent clades, with the only exception of N. tumidus and N. sp. for 18S data. Phylogenetic analysis has shown that the majority of species sampled (N. tumidus+N. sp., N. simansularis and N. beringianus) are probably very closely related, while N. salmonis occupies separate position in the trees, possibly indicating a North American origin of this species. PMID:24064255

  16. Sharpilosentis peruviensis n. g., n. sp. (Acanthocephala: Diplosentidae) from freshwater catfishes (Siluriformes) in the Amazonia

    Lisitsyna, O.; Scholz, Tomáš; Kuchta, Roman

    2015-01-01

    Roč. 91, č. 2 (2015), s. 147-155. ISSN 0165-5752 R&D Projects: GA ČR GBP505/12/G112 Institutional support: RVO:60077344 Keywords : fishes * Palaecanthocephala * SEM Subject RIV: EG - Zoology Impact factor: 1.336, year: 2014

  17. Component population study of Acanthocephalus tumescens (Acanthocephala) in fishes from Lake Moreno, Argentina.

    Rauque, Carlos A; Viozzi, Gustavo P; Semenas, Liliana G

    2003-03-01

    Seasonal samples of all fish species from Lake Moreno were taken in order to determine the presence of paratenia, to evaluate the status of the hosts and to characterise the transmission of Acanthocephalus tumescens (von Linstow, 1896) at the component population level. Prevalence, mean abundance, mean intensity, numbers of gravid females, relative abundance of the different fish species, relative output of eggs and relative flow rates for each host species were computed. Acanthocephalus tumescens showed low host specificity, successfully parasitizing six out of eight fish species present in the lake. No paratenic infection was registered. If prevalence, mean abundance, and number of gravid females are considered, host species can be placed in a continuum from the most to least suitable as follows: Galaxias platei Steindachner, Diplomystes viedmensis (Mac Donagh), Oncorhynchus mykiss (Walbaum), Salvelinus fontinalis (Mitchill), Percichthys trucha (Cuvier et Valenciennes) and Galaxias maculatus (Jenyns). However, when parasite flow rates and egg output were calculated, including relative abundance of each fish species, the continuum was rearranged as follows: P. trucha, O. mykiss, G. platei / G. maculatus, S. fontinalis and D. viedmensis. The first four species would be the main contributors to the population of A. tumescens in this lake, P. trucha being the major one. Different regulatory and non-regulatory mechanisms are suggested. PMID:12735727

  18. Digenea and acanthocephala of elasmobranch fishes from the southern coast of Brazil

    Knoff Marcelo

    2001-01-01

    Full Text Available New records for helminth species recovered from elasmobranch fishes in Brazil are established. Digenean and acanthocephalan parasites of elasmobranch fishes are reported from the southern coast of Brazil: Otodistomum veliporum (Creplin, 1837 Stafford, 1904 (Digenea: Azygiidae in the stomach and spiral valve of Dipturus trachydermus and in the spiral valve of Squatina sp. Cystacanths and juveniles of the acanthocephalans Corynosoma australe Johnston, 1937 and Corynosoma sp., in the spiral valve of Squatina sp., Galeorhinus galeus and Hexanchus griseus and in the stomach of Squalus megalops; a juvenile of Gorgorhynchus sp., in the spiral valve of Sphyrna zygaena. Dipturus trachydermus and Squatina sp. are new host records for O. veliporum. Digeneans and acanthocephalans are reported for the first time parasitizing elasmobranch fishes in Brazil.

  19. Pathologies of Oligacanthorhynchus pardalis (Acanthocephala, Oligacanthorhynchidae) in Leopardus tigrinus (Carnivora, Felidae) in Southern Brazil.

    Gallas, Moisés; da Silveira, Eliane Fraga; da Silvera, Eliane Fraga

    2012-01-01

    In Brazil, Oligacanthorhynchus pardalis (Westrumb, 1821) Schmidt, 1972 has been observed in five species of wild felines. In the present study, five roadkilled oncillas (Leopardus tigrinus Schreber, 1775) were collected in the State of Rio Grande do Sul, Brazil. Chronic lesions caused by O. pardalis were observed in the small intestine of one of the specimens. Histological examination identified a well-defined leukocyte infiltration and an area of collagenous fibrosis. Only males parasites (n = 5) were found, with a prevalence of 20%. The life cycle of Oligacanthorhynchus species is poorly known, although arthropods may be their intermediate hosts. The low prevalence encountered may be related to the small number of hosts examined, and the reduced ingestion of arthropods infected by larvae of O. pardalis. This is the first report of O. pardalis parasitizing L. tigrinus in the Brazilian state of Rio Grande do Sul. PMID:23070447

  20. Pathologies of Oligacanthorhynchus pardalis (Acanthocephala, Oligacanthorhynchidae in Leopardus tigrinus (Carnivora, Felidae in Southern Brazil Patologias de Oligacanthorhynchus pardalis (Acanthocephala, Oligacanthorhynchidae em Leopardus tigrinus (Carnivora, Felidae no sul do Brasil

    Moisés Gallas

    2012-09-01

    Full Text Available In Brazil, Oligacanthorhynchus pardalis (Westrumb, 1821 Schmidt, 1972 has been observed in five species of wild felines. In the present study, five roadkilled oncillas (Leopardus tigrinus Schreber, 1775 were collected in the State of Rio Grande do Sul, Brazil. Chronic lesions caused by O. pardalis were observed in the small intestine of one of the specimens. Histological examination identified a well-defined leukocyte infiltration and an area of collagenous fibrosis. Only males parasites (n = 5 were found, with a prevalence of 20%. The life cycle of Oligacanthorhynchus species is poorly known, although arthropods may be their intermediate hosts. The low prevalence encountered may be related to the small number of hosts examined, and the reduced ingestion of arthropods infected by larvae of O. pardalis. This is the first report of O. pardalis parasitizing L. tigrinus in the Brazilian state of Rio Grande do Sul.Para o Brasil, Oligacanthorhynchus pardalis (Westrumb, 1821 Schmidt, 1972 foi registrada em cinco espécies de felídeos silvestres. No presente estudo, cinco gatos-do-mato-pequenos (Leopardus tigrinus Schreber, 1775, vítimas de atropelamento, foram coletados no Estado do Rio Grande do Sul, Brasil. Lesões crônicas causadas por O. pardalis foram observadas no intestino delgado de um dos espécimes. Cortes histológicos permitiram a identificação de um infiltrado leucocitário bem definido e uma área de fibrose do colágeno. Somente machos (n = 5 de O. pardalis foram encontrados, com prevalência de 20%. O ciclo biológico das espécies de Oligacanthorhynchus é pouco conhecido, no entanto, artrópodes foram considerados como hospedeiros intermediários. A baixa prevalência encontrada pode estar relacionada ao número de hospedeiros examinados, bem como, com a ingestão de poucos artrópodes infectados por larvas de O. pardalis. Este é o primeiro registro de O. pardalis parasitando L. tigrinus para o Rio Grande do Sul, Brasil.

  1. Pathologies of Oligacanthorhynchus pardalis (Acanthocephala, Oligacanthorhynchidae) in Leopardus tigrinus (Carnivora, Felidae) in Southern Brazil Patologias de Oligacanthorhynchus pardalis (Acanthocephala, Oligacanthorhynchidae) em Leopardus tigrinus (Carnivora, Felidae) no sul do Brasil

    Moisés Gallas; Eliane Fraga da Silvera

    2012-01-01

    In Brazil, Oligacanthorhynchus pardalis (Westrumb, 1821) Schmidt, 1972 has been observed in five species of wild felines. In the present study, five roadkilled oncillas (Leopardus tigrinus Schreber, 1775) were collected in the State of Rio Grande do Sul, Brazil. Chronic lesions caused by O. pardalis were observed in the small intestine of one of the specimens. Histological examination identified a well-defined leukocyte infiltration and an area of collagenous fibrosis. Only males parasites (n...

  2. Sexual segregation of Echinorhynchus borealis von Linstow, 1901 (Acanthocephala) in the gut of burbot (Lota lota Linnaeus).

    Tuomainen, Arto; Tellervo Valtonen, E; Benesh, Daniel P

    2015-01-01

    Helminths often occupy defined niches in the gut of their definitive hosts. In the dioecious acanthocephalans, adult males and females usually have similar gut distributions, but sexual site segregation has been reported in at least some species. We studied the intestinal distribution of the acanthocephalan Echinorhynchus borealis von Linstow, 1901 (syn. of E. cinctulus Porta, 1905) in its definitive host, burbot (Lota lota Linnaeus). Over 80% of female worms were found in the pyloric caeca, whereas the majority of males were in the anterior two-thirds of the intestine. This difference was relatively consistent between individual fish hosts. Worms from different parts of the gut did not differ in length, so site segregation was not obviously related to worm growth or age. We found proportionally more males in the caeca when a larger fraction of the females were found there, suggesting mating opportunities influence gut distribution. However, this result relied on a single parasite infrapopulation and is thus tentative. We discuss how mating strategies and/or sexual differences in life history might explain why males and females occupy different parts of the burbot gut. PMID:26580557

  3. Porrorchis nickoli n. sp. (Acanthocephala:: Plagiorhynchidae) from mammals in southeastern Mexico, first known occurrence of Porrorchis in the western hemisphere.

    Salgado-Maldonado, Guillermo; Cruz-Reyes, Alejandro

    2002-02-01

    Porrorchis nickoli n. sp. is described from the intestine of the gray four-eyed opossum Philander opossum (type host), the Virginia opossum Didelphis virginiana, the common opossum Didelphis marsupialis, and the white-nosed coati Nasua narica. Hosts were collected in southeastern Mexico in the Los Tuxtlas region of the state of Veracruz (type locality) and in the states of Tabasco and Chiapas. This new species is distinguished from other Porrorchis species by its small proboscis (0.286-0.428 mm long x 0.273-0.438 mm wide), a proboscis armature consisting of 22-24 vertical rows of 7 or 8 hooks per row, and the male reproductive system extending postequatorially and occupying only half of the trunk. This is the first known occurrence of a Porrorchis species in the Western Hemisphere. PMID:12058721

  4. Water balance and its relation to fermentation acid production in the intestinal parasites Hymenolepis diminuta (Cestoda) and Moniliformis moniliformis (Acanthocephala).

    Uglem, G L

    1991-12-01

    Water balance and its relation to carbohydrate metabolism was examined in Hymenolepis diminuta in parallel with the putative osmoconformer Moniliformis moniliformis. Worms were removed from rat intestines, weighed, and incubated (37 C) 1 hr in rat serum and various salines, some with mannitol to vary osmotic concentration from 150 to 400 mOsm/L. Worms were removed at 15-min intervals, weighed, and returned to the test solution. Rat serum and a Ringer's saline (pH 7.4 and 300 mOsm/L) with or without 5 mM glucose were isotonic to M. moniliformis, which behaved like an osmometer, shrinking, or swelling in proportion to external osmotic changes. Hymenolepis diminuta rapidly lost 20-25% wet weight in these solutions and regained lost water when 5 mM glucose was added to the saline. Tapeworms maintained constant body weight between 210 and 335 mOsm/L, but they rapidly gained or lost water outside of this range. Glucose metabolism and uptake of [3H]glucose from the medium increased progressively between 210 and 310 mOsm/L, whereas uptake rates of [3H]leucine, 22Na+, and 36Cl- were not affected. Unbuffered saline (initial pH 6.5 and 300 mOsm/L) had a lower pH (5.0) and higher osmolality (307 mOsm/L) after a 1-hr incubation with tapeworms. Such saline was less hypertonic than unconditioned saline to freshly obtained worms. A Ringer's saline (300 mOsm/L) containing 50 mM acetate- was also hypertonic (greater than 20% weight loss) to tapeworms at pH 7.4, but it was hypotonic (greater than 20% weight gain) at pH 5.0. Isotonicity at 300 mOsm/L was achieved with pH 5.0 and 20 mM acetate-, the approximate pH and fermentation acid concentration in an infected rat intestine. Rats infected with tapeworms (12 days old) were fasted for 2 days. Starved worms were smaller but had the same percentage of body water and internal osmolality as controls. These results show that H. diminuta can regulate its body water content and that water balance is closely related to the fermentation acid concentration and pH of the bathing medium. PMID:1779290

  5. Molecular Phylogeny of the Acanthocephala (Class Palaeacanthocephala) with a Paraphyletic Assemblage of the Orders Polymorphida and Echinorhynchida

    Verweyen, Lisa; Klimpel, Sven; Harry W Palm

    2011-01-01

    Acanthocephalans are attractive candidates as model organisms for studying the ecology and co-evolutionary history of parasitic life cycles in the marine ecosystem. Adding to earlier molecular analyses of this taxon, a total of 36 acanthocephalans belonging to the classes Archiacanthocephala (3 species), Eoacanthocephala (3 species), Palaeacanthocephala (29 species), Polyacanthocephala (1 species) and Rotifera as outgroup (3 species) were analyzed by using Bayesian Inference and Maximum Likel...

  6. The intestinal parasite Pomphorhynchus laevis (Acanthocephala) from barbel as a bioindicator for metal pollution in the Danube River near Budapest, Hungary

    Concentrations of As, Al, Ag, Ba, Bi, Cd, Co, Cr, Cu, Fe, Ga, Mg, Mn, Ni, Pb, Sb, Sn, Sr, Tl, V and Zn were analyzed by inductively coupled mass spectrometry (ICP-MS) in the intestinal helminth Pomphorhynchus laevis and its host Barbus barbus. The fish were caught in the Danube river downstream of the city of Budapest (Hungary). Ten out of twenty one elements analyzed were found at higher concentrations in the acanthocephalan than in different tissues (muscle, intestine, liver and kidney) of barbel. Considering the fish tissues, most of the elements were present at highest concentrations in liver, followed by kidney, intestine and muscle. Spearman correlation analyses indicate that there is competition for metals between the parasites and the host. The negative relationships between parasite number and metal levels in organs of the barbel support this hypothesis. The bioconcentration factors for Ag, As, Ba, Bi, Cu, Ga, Mn, Pb, Sr, Tl, and Zn showed that the parasites concentrated metals to a higher degree than the fish tissues. They accumulated the metals As, Cd, Cu, Fe, Ni, Pb, Sr and Zn even better than established bioindicators such as the mussel Dreissena polymorpha as revealed by data from the literature. The results presented here emphasize that acanthocephalans of fish are very useful as sentinels for metal pollution in aquatic ecosystems. Ratio of metal concentrations in the parasites and the host tissues provide additional information. Not including acanthocephalans in accumulation bioindication studies with fishes (as still customarily done) may lead to false results. - Acanthocephalans of fish may be useful as sentinels of metal pollution in aquatic systems

  7. Metazoan parasites of Mystus vittatus (Bloch) of River Godavari with description of a new species of Acanthocephala, Raosentis godavarensis sp. nov.

    Vankara, Anu Prasanna; Vijayalakshmi, C.

    2009-01-01

    A total of 9 metazoan parasitic species were identified from Mystus vittatus (Bloch) in river Godavari during 2005–2007 including 2 monogeneans, 2 digeneans, 3 acanthocephalans and 2 copepods. Two species of monogeneans (Bifurcohaptor indicus and Thaparocleidus tengra), digeneans (Haplorchoides macrones and metacercariae of Isoparorchis hypselobagri), an acanthocephalan (Raosentis podderi) found during the present study are of common occurrence in this fish. M. vittatus constitutes a new host...

  8. Profilicollis altmani (Perry, 1942) Van Cleave, 1947 (Acanthocephala) en el Perú. Con notas sobre la infección experimental de mamiferos terrestres

    Manuel Tantaleán; Jorge Cárdenas; Rosario Güere

    2013-01-01

    Entre los meses de enero y febrero de 2001, se hizo el estudio parasitológico de Emerita analoga Stimpson (Hippidae) procedentes de la playa Bujama (Mala, Lima), encontrando que de 37 a 48% de ellos estaban infectados con cistacantos identificados como de Profilicollis altmani (Perry, 1942) Van Cleave, 1947. Estos cistacantos se inocularon en ratas, ratones, hamsters y un cachorro de perro, que resultaron todos infectados. Los parásitos se localizaron principalmente en la cavidad abdominal y/...

  9. Profilicollis altmani (Perry, 1942 Van Cleave, 1947 (Acanthocephala en el Perú. Con notas sobre la infección experimental de mamiferos terrestres

    Manuel Tantaleán

    2013-06-01

    Full Text Available Entre los meses de enero y febrero de 2001, se hizo el estudio parasitológico de Emerita analoga Stimpson (Hippidae procedentes de la playa Bujama (Mala, Lima, encontrando que de 37 a 48% de ellos estaban infectados con cistacantos identificados como de Profilicollis altmani (Perry, 1942 Van Cleave, 1947. Estos cistacantos se inocularon en ratas, ratones, hamsters y un cachorro de perro, que resultaron todos infectados. Los parásitos se localizaron principalmente en la cavidad abdominal y/o adheridos a la mucosa del intestino delgado y grueso. El hombre puede infectarse con estos parásitos al ingerir E. analoga infectados.

  10. Utilisation of brown trout by Acanthocephalus clavula (Acanthocephala) in brown trout (Salmo trutta) in an Irish lake: is this evidence of a host shift?

    HOLLAND, CELIA

    2004-01-01

    PUBLISHED The population biology of the fish acanthocephalan Acanthocephalus clavula was described from 161 wild brown trout, Salmo trutta sampled over a two-year period in Clogher Lake in the west of Ireland. Overall prevalence of the parasite was 86% and the mean abundance was 53 worms per fish. Despite the presence of large numbers of worms in the trout very few females (2%) attained full reproductive maturity. This suggests that trout is an accidental host. A sample of yellow eels, Ang...

  11. Breizacanthus aznari sp. n. (Acanthocephala: Arhythmacanthidae) from the banded cusk-eel Raneya brasiliensis (Ophidiiformes: Ophidiidae) from the Patagonian coast in Argentina

    Hernandez-Orts, J.S.; Alama-Bermejo, Gema; Crespo, E.A.; García, N.A.; Raga, J. A.; Montero, E. E.

    2012-01-01

    Roč. 59, č. 4 (2012), s. 264-271. ISSN 0015-5683 R&D Projects: GA ČR GBP505/12/G112 Institutional support: RVO:60077344 Keywords : spiny-headed worms * Palaeacanthocephala * Euzetacanthus * taxonomy * marine fish * southwestern Atlantic * Patagonia Subject RIV: EA - Cell Biology Impact factor: 2.515, year: 2012 http://folia.paru.cas.cz/pdfs/showpdf.php?pdf=22090

  12. The intestinal parasite Pomphorhynchus laevis (Acanthocephala) from barbel as a bioindicator for metal pollution in the Danube River near Budapest, Hungary

    Thielen, F.; Zimmermann, S.; Baska, F.; Taraschewski, H.; Sures, B

    2004-06-01

    Concentrations of As, Al, Ag, Ba, Bi, Cd, Co, Cr, Cu, Fe, Ga, Mg, Mn, Ni, Pb, Sb, Sn, Sr, Tl, V and Zn were analyzed by inductively coupled mass spectrometry (ICP-MS) in the intestinal helminth Pomphorhynchus laevis and its host Barbus barbus. The fish were caught in the Danube river downstream of the city of Budapest (Hungary). Ten out of twenty one elements analyzed were found at higher concentrations in the acanthocephalan than in different tissues (muscle, intestine, liver and kidney) of barbel. Considering the fish tissues, most of the elements were present at highest concentrations in liver, followed by kidney, intestine and muscle. Spearman correlation analyses indicate that there is competition for metals between the parasites and the host. The negative relationships between parasite number and metal levels in organs of the barbel support this hypothesis. The bioconcentration factors for Ag, As, Ba, Bi, Cu, Ga, Mn, Pb, Sr, Tl, and Zn showed that the parasites concentrated metals to a higher degree than the fish tissues. They accumulated the metals As, Cd, Cu, Fe, Ni, Pb, Sr and Zn even better than established bioindicators such as the mussel Dreissena polymorpha as revealed by data from the literature. The results presented here emphasize that acanthocephalans of fish are very useful as sentinels for metal pollution in aquatic ecosystems. Ratio of metal concentrations in the parasites and the host tissues provide additional information. Not including acanthocephalans in accumulation bioindication studies with fishes (as still customarily done) may lead to false results. - Acanthocephalans of fish may be useful as sentinels of metal pollution in aquatic systems.

  13. Relationship between biomass and parasite density of Mediorhynchus emberizae (Acanthocephala: Gigantorhynchidae parasites of Paroaria dominicana (Passeriformes: Emberizidae of the State of Bahia, Brazil Relação entre biomassa e densidade parasitária de Mediorhynchus emberizae (acanthocephala: gigantorhynchidae parasito de Paroaria dominicana (passeriformes: emberizidae do estado da Bahia, Brasil

    Adriano R. Carvalho

    2008-06-01

    Full Text Available During the study of the metazoan parasites of Paroaria dominicana (Linnaeus, 1758, eight infrapopulations of Mediorhynchus emberizae (Rudolphi, 1819, were collected in the medium third of the small intestine, with parasite intensities ranging from one to ten specimens. Differences among the average values of the biomass, volume of the eggs, volume of the testicles and the parasite density of the infrapopulations were statistically tested in order to detect variations of these parameters in function of parasite density. Was observed that the acanthocephalans biomass increased with the volume of the intestine and also that the parasite density increased with the parasite intensity in the infrapopulations. It was verified that the increase of the parasite intensity was accompanied by the decrease of the mean biomass of the parasites. Decrease of the volume of the eggs was verified with the increase of the density and of the parasite intensity. The results of the present work could suggested the occurrence of density-dependent factors and the decrease of testicles volume and the biomass of the males with the increase of the parasite density in the infrapopulations of M. emberizae in the intestine of P dominicana.Durante o estudo dos metazoários parasitos de Paroaria dominicana (Linnaeus, 1758, oito infrapopulações de Mediorhynchus emberizae (Rudolphi, 1819, foram coletadas no terço médio do intestino delgado, com intensidades parasitárias variando de um a dez espécimes. Diferenças entre os valores médios da biomassa, volume dos ovos, volume dos testículos e da densidade parasitária das diferentes infrapopulações foram estatisticamente testadas com o objetivo de detectar variações desses parâmetros em função da densidade parasitária. Foi observado que a biomassa de acantocéfalos aumentou com o volume do intestino e também que a densidade dos parasitos aumentou com a intensidade parasitária nas infrapopulações. Verificou-se que o aumento da intensidade parasitária foi acompanhada pela diminuição da biomassa média dos parasitos. Constatou-se diminuição do volume dos ovos com o aumento da densidade e da intensidade parasitária. Os resultados do presente trabalho parecem dar indícios da ocorrência de fatores dependentes da densidade e da diminuição do volume testicular e a biomassa dos machos com o aumento da densidade parasitária nas infrapopulações de M. emberizae no intestino de P. dominicana.

  14. El rol de Cyrtograpsus angulatus (Crustacea; Brachyura en los ciclos de vida de Microphallus szidati (Digenea; Microphallidae y Falsifilicollis chasmagnathi (Acanthocephala; Filicollidae: algunos aspectos de su ecologia parasitaria The role of Cytograpsus angulatus (Crustacea; Brachyura in the life cycles of Microphallus szidati (Digenea; Microphallidae and Falsifilicollis chasmagnathi (Acanthocephala; Filicollidae: some aspects of their ecological parasitology

    Sergio R. Martorelli

    1989-12-01

    Full Text Available Basándose en el estudio de los helmintos larvales parásitos del cangrejo Cyrtograpsus angulatus Dana, 1851 (Microphallus szidati Martorelli, 1986 (Digenea; Microphallidae y Falsifilicollis chasmagnathi Holcman-Spector et al., 1977 (Acathocephala; Fillicollidae conjuntamente con el análisis de sus ciclos biológicos y el estudio de la prevalencia, intensidad y de los índices de asociación (comparados entre los hospedadores intermediarios y definitivos se pudo concluir que: a C. angulatus parece ser un excelente hospedador intermediario en los ciclos de vida de los helmintos estudiados; b el tamaño de los cangrejos y la ocurrencia de amputaciones naturales en las hembras de mayor tamaño Spivak & Politis (en prensa aparecen correlacionadas con la prevalencia; c en los cangrejos estudiados la prevalencia para F. chasmagnathi fue mayor en los machos que en las hembras; d la intensidad no apareció correlacionada con el tamño y el sexo de los hospedadores intermediarios; e M. szidati y F. chasmagnathi estan fuertemente asociados en el hospedador intermediario; f C. angulatus e Himantopus melanurus Vieilot, 1817 (Aves; Recurvirostridae son citados como nuevos hospedadores, intermediario y denitivo respectivamente, para F. chasmagnathi; g Chasmagnathus granulata Dana, 1851 es citado como un nuevo hospedador intermediario para M. szidati.Based on a study of the larvae from two helminth species parasitizing the crab Cyrtograpsus angulatus Dana, 1851 (Microphallus szidati Martorelli, 1986 and Falsifilicollis chasmagnathi Holcman-Spector et al., 1977, from Mar chiquita lagoom (Argentina together with the analyses of their life cycles and rates of prevalence, intensity and association coefficient (compared in definitive and intermediate host the following conclusions have been reached: a C. angulatus suns to be an excelent intermediate host in the life-cycles of the studied helminths; b the size of the crabs and the occurence of natural amputations in the females (Spivak & Politis, in press appeared correlated with prevalence; c in the studied crabs the pervalence fo F. chasmagnathi is higher in males than in females; d the intensity did not appear correlated with size and sex of the intermediate host; e M. szidati and F. chasmagnathi are closely associated with the intermediate host; f C. angulatus and Himantopus melanurus Vieillot, 1817 (Aves; Recurvirostridae are reported as new intermediate and definitive hosts, respectively, for F. chasmagnathi; g Chasmagnathus granulata Dana, 1851 (Cruscea; Brachyura is reported as new intermediate host for M. szidati.

  15. Catalogue of the Coreidae in the Rijksmuseum van Natuurlijke Historie : Part IV. Coreinae, third Part

    Blöte, H.C.

    1938-01-01

    ACANTHOCEPHALINI Acanthocephala (A.) declivis Say. 1-4. Mexico, Klug. Var. panamensis Dist. 5-6. Chiriqui, Panama. Acanthocephala (A.) latipes Drury. 1-3. Brazil, Calkoen. — 4. Brazil, van Eyndhoven. — 5. Central Brazil, van Vollenhoven. — 6. Brazil. — 7. ?. — 8. Post Groningen, Surinam, W. C. van H

  16. Morphological and molecular description of Tenuisentis niloticus (Meyer, 1932) (Acanthocephala: Tenuisentidae) from Heterotis niloticus (Cuvier) (Actinopterygii: Arapaimidae), in Burkina Faso, with emendation of the family diagnosis and notes on new features, cryptic genetic diversity and histopathology.

    Amin, Omar M; Evans, R Paul; Boungou, Magloire; Heckmann, Richard

    2016-02-01

    Specimens described as Rhadinorhynchus niloticus Meyer, 1932 (Rhadinorhynchidae) from two male specimens collected from Heterotis niloticus (Cuvier) in the Egyptian Nile were later redescribed in the genus Tenuisentis Van Cleave, 1936 (Tenuisentidae) based on 12 specimens collected from the same host species in the White Nile. That redescription basically distinguished the two genera based on five traits but did not actually provide a formal description. His account left out information about cerebral ganglion, lemnisci, some reproductive structures, eggs, proboscis hook dissymmetry and roots, size of trunk and a few other structures. We provide (i) the first complete description of this species enhanced by SEM, molecular, and histo-pathological studies; (ii) expand the existing descriptions; (iii) correct questionable accounts advanced by Van Cleave on the cement gland and the hypodermal giant nuclei; and (iv) add descriptions of new features such as the para-receptacle structure which we also report from Paratenuisentis Bullock & Samuel, 1975, the only other genus in Tenuisentidae Van Cleave, 1936. The subsequent description of a few more specimens from the same host collected in Mali was more informative yet incomplete and at variance with our specimens from Burkina Faso. Genetic divergence and phylogenetic analyses of mitochondrial (cytochrome oxidase c subunit I; COI) and nuclear (18S ribosomal RNA) gene relationships uncovered a cryptic species complex containing two lineages. Based on our studies, the family diagnosis is emended. The acanthocephalan causes damage to the host intestine as depicted in histopathological sections. The invading worm can extend from the mucosal layer to the muscularis externa of the host with subsequent tissue necrosis, villi compression, haemorrhaging and blood loss. PMID:26790681

  17. Morphological and molecular descriptions of Moniliformis saudi sp. n. (Acanthocephala: Moniliformidae) from the desert hedgehog, Paraechinus aethiopicus (Ehrenberg) in Saudi Arabia, with a key to species and notes on histopathology.

    Amin, Omar M; Heckmann, Richard A; Osama, Mohammed; Evans, R Paul

    2016-01-01

    A new acanthocepohalan species, Moniliformis saudi sp. n. is described from the desert hedgehog, Paraechinus aethiopicus (Ehrenberg), in central Saudi Arabia. Fourteen other valid species of Moniliformis Travassos, 1915 are recognised. The new species of Moniliformis is distinguished by having a small proboscis (315-520 µm long and 130-208 µm wide) with two apical pores, 14 rows of 8 hooks each and small hooks, thre largest being 25-31 µm long anteriorly. Distinguishing features are incorporated in a dichotomous key to the species of Moniliformis. The description is augmented by scanning electron microscopical (SEM) observation and DNA analysis of nuclear (18S rRNA) and mitochondrial (cytochrome oxidase subunit 1; cox1) gene sequences. Attached worms cause extensive damage to the immediate area of attachment in the host intestine. This includes tissue necrosis and blood loss due to damage to capillary beds. Worms also obstruct essential absorbing surfaces. PMID:27189420

  18. Fauna Europaea: Helminths (Animal Parasitic)

    Gibson, D. I.; Bray, R. A.; Hunt, D.; Georgiev, B. B.; Scholz, Tomáš; Harris, P.D.; Bakke, T.A.; Pomajska, T.; Niewiadomska, K.; Kostadinova, Aneta; Tkach, V.; Bain, O.; Durette-Desset, M.-C.; Gibbons, L.; Moravec, František; Petter, A.; Dimitrova, Z.M.; Buchmann, K.; Valtonen, E. T.; de Jong, Y.

    -, č. 2 (2014), e1060. ISSN 1314-2828 Institutional support: RVO:60077344 Keywords : Acanthocephala * Biodiversity * Biodiversity Informatics * Cestoda * Fauna Europaea * Helminth * Monogenea * Nematoda * Parasite * Taxonomic indexing * Taxonomy * Trematoda * Zoology Subject RIV: EB - Genetics ; Molecular Biology

  19. Records of Copiatestes filiferus (Leukart, in Sars, 1885 Gibson and Bray, 1977 (Digenea and Gorgorhynchus sp. (Acanthocepahala of marine fish from peruvian coast

    Manuel Tantaleán V

    2013-06-01

    Full Text Available In this paper, Copiatestes filiferus (Leukart, in Sars, 1885 Gibson and Bray, 1977 (Digenea and Gorgorhynchus sp. (Acanthocephala parasites of Hemilutjanus macrophthalmos (Teleostei, both parasites are new records from Peru and the fish is a new host.

  20. EST based phylogenomics of Syndermata questions monophyly of Eurotatoria

    Bucher Gregor; Boell Louis; Meyer Achim; Herlyn Holger; Witek Alexander; Hankeln Thomas

    2008-01-01

    Abstract Background The metazoan taxon Syndermata comprising Rotifera (in the classical sense of Monogononta+Bdelloidea+Seisonidea) and Acanthocephala has raised several hypotheses connected to the phylogeny of these animal groups and the included subtaxa. While the monophyletic origin of Syndermata and Acanthocephala is well established based on morphological and molecular data, the phylogenetic position of Syndermata within Spiralia, the monophyletic origin of Monogononta, Bdelloidea, and S...

  1. PARASITES OF FRESHWATER FISHES IN NORTH AMERICA: WHY SO NEGLECTED?

    Scholz, Tomáš; Choudhury, A.

    2014-01-01

    Roč. 100, č. 1 (2014), s. 26-45. ISSN 0022-3395 R&D Projects: GA ČR GBP505/12/G112 Institutional support: RVO:60077344 Keywords : Trematode * North America * Cestoda * Acanthocephala * Digenea Subject RIV: EG - Zoology Impact factor: 1.227, year: 2014

  2. Telosentis exiguus (von Linstow, 1901) (Palaeacanthocephala: Illiosentidae), a generalist parasite of fishes in the Mediterranean basin

    Kvach, Yuriy; Sasal, P.

    2010-01-01

    Roč. 76, č. 1 (2010), s. 9-18. ISSN 0165-5752 Institutional research plan: CEZ:AV0Z60220518 Keywords : ACANTHOCEPHALA Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine Impact factor: 1.056, year: 2010

  3. A checklist of the helminth parasites of marine mammals from Argentina

    Hernández-Orts, J.S.; Viola, M.N.P.; García, N.A.; Crespo, E.A.; González, R.; García-Varela, M.; Kuchta, Roman

    2015-01-01

    Roč. 3936, č. 3 (2015), s. 301-334. ISSN 1175-5326 R&D Projects: GA ČR GAP506/12/1632 Institutional support: RVO:60077344 Keywords : Acanthocephala * Nematoda * Cestoda * Trematoda * Carnivora * Cetacea * South West Atlantic Subject RIV: EG - Zoology Impact factor: 0.906, year: 2014

  4. Haematological response of curimbas Prochilodus lineatus, naturally infected with Neoechinorhynchus curemai.

    Belo, M A A; Souza, D G F; Faria, V P; Prado, E J R; Moraes, F R; Onaka, E M

    2013-04-01

    This study evaluated the haematological response of curimbas Prochilodus lineatus, naturally infected with Neoechinorhynchus curemai (Acanthocephala: Neoechinorhynchidae). Thirty-seven fish were captured in October 2010 from the Mogi Guaçu River, Porto Ferreira, SP, Brazil. Infected fish presented increased mean corpuscular volume of erythrocytes, and lower thrombocyte and higher monocyte counts than uninfected fish. PMID:23557315

  5. Northeast India Helminth Parasite Information Database (NEIHPID): Knowledge Base for Helminth Parasites

    Biswal, Devendra Kumar; Debnath, Manish; Kharumnuid, Graciously; Thongnibah, Welfrank; Tandon, Veena

    2016-01-01

    Most metazoan parasites that invade vertebrate hosts belong to three phyla: Platyhelminthes, Nematoda and Acanthocephala. Many of the parasitic members of these phyla are collectively known as helminths and are causative agents of many debilitating, deforming and lethal diseases of humans and animals. The North-East India Helminth Parasite Information Database (NEIHPID) project aimed to document and characterise the spectrum of helminth parasites in the north-eastern region of India, providin...

  6. Ecological study of some parasitic helminths of aquatic organisms

    Geets, A.; P. Van Damme; Hamerlynck, O.

    1988-01-01

    Except for Monogenea, most other helminth parasites (Digenea, Cestoda, Nematoda and Acanthocephala) of aquatic organisms have a rather complex life cycle, which includes one or more intermediate hosts. Studies have been carried out on the elucidation of helminth life cycles and on parasite-host relationships. Knowledge of the feeding behaviour of the host is a very useful starting-point for elucidation of the life cycles of its' parasites. Asymphylodora demeli, a trematode of two sympatric go...

  7. Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI) gene sequence

    Ana Carolina Falla; Claudia Brieva; Paul Bloor

    2015-01-01

    Prosthenorchis elegans is a member of the Phylum Acanthocephala and is an important parasite affecting New World Primates in the wild in South America and in captivity around the world. It is of significant management concern due to its pathogenicity and mode of transmission through intermediate hosts. Current diagnosis of P. elegans is based on the detection of eggs by coprological examination. However, this technique lacks both specificity and sensitivity, since eggs of most members of the ...

  8. Lutz's spontaneous sedimentation technique and the paleoparasitological analysis of sambaqui (shell mound) sediments

    Morgana Camacho; Thaíla Pessanha; Daniela Leles; Juliana MF Dutra; Rosângela Silva; Sheila Mendonça de Souza; Adauto Araujo

    2013-01-01

    Parasite findings in sambaquis (shell mounds) are scarce. Although the 121 shell mound samples were previously analysed in our laboratory, we only recently obtained the first positive results. In the sambaqui of Guapi, Rio de Janeiro, Brazil, paleoparasitological analysis was performed on sediment samples collected from various archaeological layers, including the superficial layer as a control. Eggs of Acanthocephala, Ascaridoidea and Heterakoidea were found in the archaeological layers. We ...

  9. Helminths of two anuran species, Atelopus spurrelli (Bufonidae) and Dendrobates histrionicus (Dendrobatidae), from Colombia, South America.

    Goldberg, Stephen R; Bursey, Charles R

    2003-09-01

    Two species of anurans from Colombia, South America, Atelopus spurrelli and Dendrobates histrionicus, were examined for helminths. A. spurrelli was found to harbor three species of Nematoda, adults of Cosmocerca podicipinus and larvae of Physocephalus sp. and Porrocaecum sp. D. histrionicus was found to harbor, in addition to C. podicipinus, Physocephalus sp. and Porrocaecum sp. and cystacanths of three species of Acanthocephala: Centrorhynchus sp., Onicola sp. and Polymorphus sp. A. spurrelli and D. histrionicus represent new host records for these helminths. PMID:14550481

  10. EST based phylogenomics of Syndermata questions monophyly of Eurotatoria

    Bucher Gregor

    2008-12-01

    Full Text Available Abstract Background The metazoan taxon Syndermata comprising Rotifera (in the classical sense of Monogononta+Bdelloidea+Seisonidea and Acanthocephala has raised several hypotheses connected to the phylogeny of these animal groups and the included subtaxa. While the monophyletic origin of Syndermata and Acanthocephala is well established based on morphological and molecular data, the phylogenetic position of Syndermata within Spiralia, the monophyletic origin of Monogononta, Bdelloidea, and Seisonidea and the acanthocephalan sister group are still a matter of debate. The comparison of the alternative hypotheses suggests that testing the phylogenetic validity of Eurotatoria (Monogononta+Bdelloidea is the key to unravel the phylogenetic relations within Syndermata. The syndermatan phylogeny in turn is a prerequisite for reconstructing the evolution of the acanthocephalan endoparasitism. Results Here we present our results from a phylogenomic approach studying i the phylogenetic position of Syndermata within Spiralia, ii the monophyletic origin of monogononts and bdelloids and iii the phylogenetic relations of the latter two taxa to acanthocephalans. For this analysis we have generated EST libraries of Pomphorhynchus laevis, Echinorhynchus truttae (Acanthocephala and Brachionus plicatilis (Monogononta. By extending these data with database entries of B. plicatilis, Philodina roseola (Bdelloidea and 25 additional metazoan species, we conducted phylogenetic reconstructions based on 79 ribosomal proteins using maximum likelihood and bayesian approaches. Our findings suggest that the phylogenetic position of Syndermata within Spiralia is close to Platyhelminthes, that Eurotatoria are not monophyletic and that bdelloids are more closely related to acanthocephalans than monogononts. Conclusion Mapping morphological character evolution onto molecular phylogeny suggests the (partial or complete reduction of the corona and the emergence of a retractable

  11. Neoechinorhynchus pimelodi sp.n. (Eoacanthocephala, Neoechinorhynchidae) parasitizing Pimelodus maculatus Lacépède, "mandi-amarelo" (Siluroidei, Pimelodidae) from the basin of the São Francisco river, Três Marias, Minas Gerais, Brazil

    Marília de Carvalho Brasil-Sato; Gilberto Cezar Pavanelli

    1998-01-01

    Neoechinorhynchus pimelodi sp.n. is described as the first record of Acanthocephala in Pimelodus maculatus Lacépède. 1803, collected in the São Francisco river, Três Marias, Minas Gerais. The new species is distinguished from other of the genus by the three circles of hooks of different sizes, and by the eggs measurements. The hooks measuring 100-1 12 (105), 32-40 (36) and 20-27 (23) in length in the males and 102-142 (129), 34-55 (47) and 27-35 (29) in length in the females for the anterior,...

  12. Helminthofauna of Ohrid gudgeon (Gobio ohridanus Karaman, 1924) from the Lake Ohrid, Macedonia.

    Stojanovski, Stojmir; Blažekovic-Dimovska, Dijana; Karabolovski, Nikola; Velkova-Jordanoska, Lidija; Rokicki, Jerzy; Smiljkov, Stoe

    2015-01-01

    Total, 94 specimens of gudgeon (Gobio ohridanus Karaman, 1924) from the Macedonian part of the Lake Ohrid were examined and 61 fishes (64.89%) were infected with parasites. The presence of 4 parasite species was established: Dactylogyrus cryptomeres f. typica (Monogenea), Cystidicoloides tenuissima and Philometra ovata (Nematoda), and Pomphorhynchus laevis (Acanthocephala). The highest prevalence and intensity of infection was with Dactylogyrus cryptomeres f. typica (59.57%; mean intensity 6.07). The lowest one was with Cystidicoloides tenuissima and Philometra ovata (2.13%; 1.0). Dactylogyrus cryptomeres f. typica is recorded for the first time in the ichthyoparasitofauna of Lake Ohrid and Macedonia. PMID:25911039

  13. A fauna de parasitas do tambaqui, Colossoma macropomum (Cuvier, 1818) (Characiformes: Characidae) do médio rio Solimões, Estado do Amazonas (AM) e do baixo rio Amazonas, Estado do Pará (PA), e seu potencial como indicadores biológicos The fauna of parasites of the tambaqui, Colossoma macropomum (Cuvier, 1818) (Characiformes: Characidae) from middle Solimões River and lower Amazonas River and their potential as biological indicators

    Christina Fischer; José Celso de Oliveira Malta; Angela Maria Bezerra Varella

    2003-01-01

    Foram examinados brânquias, fossas nasais e intestinos de tambaquis (Colossoma macropomum) capturados em duas localidades na Amazônia, próximas aos municípios de Tefé/Coari, no médio rio Solimões, Estado do Amazonas e de Santarém no baixo rio Amazonas, Estado do Pará. Nove espécies de parasitas foram encontradas: três da classe Monogenoidea; Anacanthorus spathulatus, Linguadactyloides brinkmanni e Notozothecium sp.; uma de Trematoda da família Paramphistomidae; uma do filo Acanthocephala, Neo...

  14. Endoparasites of European perch Perca fluviatilis fry: role of spatial segregation

    Kuchta, Roman; Čech, Martin; Scholz, Tomáš; Soldánová, Miroslava; Levron, Céline; Škoríková, Blanka

    2009-01-01

    Roč. 86, č. 1 (2009), s. 87-91. ISSN 0177-5103 R&D Projects: GA ČR GA524/08/0885; GA ČR GA206/06/1371; GA ČR GP206/09/P266; GA AV ČR KJB600960902; GA MŠk LC522 Institutional research plan: CEZ:AV0Z60220518; CEZ:AV0Z60170517 Keywords : Acanthocephala * Cestoda * Nematoda Subject RIV: GJ - Animal Vermins ; Diseases, Veterinary Medicine Impact factor: 1.687, year: 2009

  15. Helminths parasites of whales in Brazil

    Luís C. Muniz-Pereira

    1999-01-01

    Full Text Available Three species of whale Balaenoptera borealis Lesson, 1828, B. physalus (Linnaeus, 1758 and Physeter catodon Linnaeus, 1758 captured in the Brazilian coast were necropsied for helminths. Balaenoptera borealis and B. physalus were infected by Crassicauda crassicauda (Nematoda, Tetrameridae and Ogmogaster antarcticus (Digenea: Notocotylidae, which are referred for the first time in Brazil. Balaenoptera borealis was also infected by Lecithodesmus goliath (Digenea, Campulidae and Bolbosoma turbinella (Acanthocephala, Polymorphidae. Physeter catodon was infected by Anisakis physeteris (Nematoda, Anisakidae, which is a new record to this host in Brazilian waters.

  16. Lutz's spontaneous sedimentation technique and the paleoparasitological analysis of sambaqui (shell mound sediments

    Morgana Camacho

    2013-04-01

    Full Text Available Parasite findings in sambaquis (shell mounds are scarce. Although the 121 shell mound samples were previously analysed in our laboratory, we only recently obtained the first positive results. In the sambaqui of Guapi, Rio de Janeiro, Brazil, paleoparasitological analysis was performed on sediment samples collected from various archaeological layers, including the superficial layer as a control. Eggs of Acanthocephala, Ascaridoidea and Heterakoidea were found in the archaeological layers. We applied various techniques and concluded that Lutz's spontaneous sedimentation technique is effective for concentrating parasite eggs in sambaqui soil for microscopic analysis.

  17. Parasites in pet reptiles

    Mavri Urška

    2011-05-01

    Full Text Available Abstract Exotic reptiles originating from the wild can be carriers of many different pathogens and some of them can infect humans. Reptiles imported into Slovenia from 2000 to 2005, specimens of native species taken from the wild and captive bred species were investigated. A total of 949 reptiles (55 snakes, 331 lizards and 563 turtles, belonging to 68 different species, were examined for the presence of endoparasites and ectoparasites. Twelve different groups (Nematoda (5, Trematoda (1, Acanthocephala (1, Pentastomida (1 and Protozoa (4 of endoparasites were determined in 26 (47.3% of 55 examined snakes. In snakes two different species of ectoparasites were also found. Among the tested lizards eighteen different groups (Nematoda (8, Cestoda (1, Trematoda (1, Acanthocephala (1, Pentastomida (1 and Protozoa (6 of endoparasites in 252 (76.1% of 331 examined animals were found. One Trombiculid ectoparasite was determined. In 563 of examined turtles eight different groups (Nematoda (4, Cestoda (1, Trematoda (1 and Protozoa (2 of endoparasites were determined in 498 (88.5% animals. In examined turtles three different species of ectoparasites were seen. The established prevalence of various parasites in reptiles used as pet animals indicates the need for examination on specific pathogens prior to introduction to owners.

  18. Neoechinorhynchus pimelodi sp.n. (Eoacanthocephala, Neoechinorhynchidae parasitizing Pimelodus maculatus Lacépède, "mandi-amarelo" (Siluroidei, Pimelodidae from the basin of the São Francisco river, Três Marias, Minas Gerais, Brazil

    Marília de Carvalho Brasil-Sato

    1998-12-01

    Full Text Available Neoechinorhynchus pimelodi sp.n. is described as the first record of Acanthocephala in Pimelodus maculatus Lacépède. 1803, collected in the São Francisco river, Três Marias, Minas Gerais. The new species is distinguished from other of the genus by the three circles of hooks of different sizes, and by the eggs measurements. The hooks measuring 100-1 12 (105, 32-40 (36 and 20-27 (23 in length in the males and 102-142 (129, 34-55 (47 and 27-35 (29 in length in the females for the anterior, middle and posterior circles. The eggs measuring 15-22 (18 in length and 12-15 (14 in width, with concentric layers of texture smooth, enveloping the acanthor.

  19. Parasites of the Raccoon, Procyon lotor

    Clark, G.M.; Herman, C.M.

    1959-01-01

    At least 76 species of parasites have been reported from raccoons. These include 4 species of protozoa, 27 nematodes, 20 trematodes, 7 cestodes, 3 acanthocephala, and 15 arthropods. In many cases these represent single reports. In other cases some of the parasites are known to be of frequent occurrence and broad geographical range on the basis of several surveys that have been conducted. During the past 30 years 260 raccoons have been examined for parasites at the Patuxent Research Refuge. While most of these animals were collected on the refuge, several were from other localities in Maryland and a few from outside this state. The known distribution and occurrence of parasites of the raccoon are presented on charts and representative specimens of some of those collected at the Patuxent Research Refuge are demonstrated.

  20. Metazoan Parasite Infracommunities in Five Sciaenids from the Central Peruvian Coast

    Oliva Marcelo E

    1998-01-01

    Full Text Available Parasitological analysis of 237 Menticirrhus ophicephalus, 124 Paralonchurus peruanus, 249 Sciaena deliciosa, 50 Sciaena fasciata and 308 Stellifer minor from Callao (Perú yielded 37 species of metazoan parasites (14 Monogenea, 11 Copepoda, 4 Nematoda, 3 Acanthocephala, 1 Digenea, 1 Aspidobothrea, 1 Eucestoda, 1 Isopoda and 1 Hirudinea. Only one species, the copepoda Bomolochus peruensis, was common to all five hosts. The majority of the components of the infracommunities analyzed are ectoparasites. The Brillouin index (H and evenness (J´ were applied to the fully sampled metazoan parasite infracommunities. High values of prevalence and mean abundance of infection are associated to the polyonchoinean monogeneans; the low values of J' reinforce the strong dominance of this group in the studied communities. The paucity of the endoparasite fauna may be a consequence of the unstable environment due to an upwelling system, aperiodically affected by the El Niño Southern Oscillation phenomena.

  1. Helminth parasites in six species of shorebirds (Charadrii from the Coast of Belize

    Canaris Albert G

    2001-01-01

    Full Text Available Thirteen species of helminth parasites were recovered from six species of charadriid shorebirds (Aves: Charadriiformes from Belize: the ruddy turnstone, Arenaria interpres, the snowy plover, Charadrius alexandrinus, the semipalmated plover, C. semipalmatus, the killdeer, C. vociferus, the white-rumped sandpiper, Calidris fuscicollis, and the black-bellied plover, Pluvialis squatarola. Cestode species were predominant (N = 8, followed by trematode species (N = 3 and acanthocephala (N = 2. The trematode, Paramaritremopsis solielangi infected four of the six species of hosts. The cestodes, Nadejdolepis litoralis and N. paranitidulans infected three and two host species respectively. Helminth parasite species were contagious (clumped and not evenly distributed among hosts. Twelve of the 13 species were generalists. The one specialist Microphallus kinsellae was recovered from one C. fuscicollis. Three of the four types of feeding guilds were present and in approximately the same number. All but M. kinsellae have been reported from other species of hosts, mostly from Eurasia and North America.

  2. Helminths Parasite Larvae collected from Arabian Gulf Fish. 4. Description of four Larvae including two Metacercarae, one Didymozoid and one Acanthocephalan from Emirati Coasts

    Four helminth larvae from different fish hosts caught from Emirate coasts are described. Two are metacercariae related to genus Southampton's, type (I) and (II). Type (I) was found encysted in body cavities of the Indian halibut Psettodes erumei and the areolate grouper Epinephelus areolatusu and type (II) in the golden stripped goatfish Mulloides flavolineatus. The third larva is related to Acanthocephala and identified as Serrasentis sagittifer. It was collected from the body cavity of the spotted lizard fish Saurida undosquamius. The fourth larva belongs to the didymozoid trematodes, and was found infecting the kidneys of different hosts, such as Saurida undosquamis, the Jack pomfret Parastromateus niger and mackerel tuna Euthynnus affins. The larva related to Stephanostomum type (I) and type (II) and the dydimozoid type are described for the first time in the Arabian Gulf. (author)

  3. Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI) gene sequence.

    Falla, Ana Carolina; Brieva, Claudia; Bloor, Paul

    2015-12-01

    Prosthenorchis elegans is a member of the Phylum Acanthocephala and is an important parasite affecting New World Primates in the wild in South America and in captivity around the world. It is of significant management concern due to its pathogenicity and mode of transmission through intermediate hosts. Current diagnosis of P. elegans is based on the detection of eggs by coprological examination. However, this technique lacks both specificity and sensitivity, since eggs of most members of the genus are morphologically indistinguishable and shed intermittently, making differential diagnosis difficult, and coprological examinations are often negative in animals severely infected at death. We examined sequence variation in 633 bp of mitochondrial DNA (mtDNA) cytochrome c oxidase I (COI) sequence in 37 isolates of P. elegans from New World monkeys (Saguinus leucopus and Cebus albifrons) in Colombia held in rescue centers and from the wild. Intraspecific divergence ranged from 0.0 to 1.6% and was comparable with corresponding values within other species of acanthocephalans. Furthermore, comparisons of patterns of sequence divergence within the Acanthocephala suggest that Prosthenorchis represents a separate genus within the Oligacanthorhynchida. Six distinct haplotypes were identified within P. elegans which grouped into one of two well-supported mtDNA haplogroups. No association between haplogroup/haplotype, holding facility and species was found. This information will help pave the way to the development of molecular-based diagnostic tools for the detection of P. elegans as well as furthering research into the life cycle, intermediate hosts and epidemiological aspects of the species. PMID:26759793

  4. Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI gene sequence

    Ana Carolina Falla

    2015-12-01

    Full Text Available Prosthenorchis elegans is a member of the Phylum Acanthocephala and is an important parasite affecting New World Primates in the wild in South America and in captivity around the world. It is of significant management concern due to its pathogenicity and mode of transmission through intermediate hosts. Current diagnosis of P. elegans is based on the detection of eggs by coprological examination. However, this technique lacks both specificity and sensitivity, since eggs of most members of the genus are morphologically indistinguishable and shed intermittently, making differential diagnosis difficult, and coprological examinations are often negative in animals severely infected at death. We examined sequence variation in 633 bp of mitochondrial DNA (mtDNA cytochrome c oxidase I (COI sequence in 37 isolates of P. elegans from New World monkeys (Saguinus leucopus and Cebus albifrons in Colombia held in rescue centers and from the wild. Intraspecific divergence ranged from 0.0 to 1.6% and was comparable with corresponding values within other species of acanthocephalans. Furthermore, comparisons of patterns of sequence divergence within the Acanthocephala suggest that Prosthenorchis represents a separate genus within the Oligacanthorhynchida. Six distinct haplotypes were identified within P. elegans which grouped into one of two well-supported mtDNA haplogroups. No association between haplogroup/haplotype, holding facility and species was found. This information will help pave the way to the development of molecular-based diagnostic tools for the detection of P. elegans as well as furthering research into the life cycle, intermediate hosts and epidemiological aspects of the species.

  5. Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI) gene sequence

    Falla, Ana Carolina; Brieva, Claudia; Bloor, Paul

    2015-01-01

    Prosthenorchis elegans is a member of the Phylum Acanthocephala and is an important parasite affecting New World Primates in the wild in South America and in captivity around the world. It is of significant management concern due to its pathogenicity and mode of transmission through intermediate hosts. Current diagnosis of P. elegans is based on the detection of eggs by coprological examination. However, this technique lacks both specificity and sensitivity, since eggs of most members of the genus are morphologically indistinguishable and shed intermittently, making differential diagnosis difficult, and coprological examinations are often negative in animals severely infected at death. We examined sequence variation in 633 bp of mitochondrial DNA (mtDNA) cytochrome c oxidase I (COI) sequence in 37 isolates of P. elegans from New World monkeys (Saguinus leucopus and Cebus albifrons) in Colombia held in rescue centers and from the wild. Intraspecific divergence ranged from 0.0 to 1.6% and was comparable with corresponding values within other species of acanthocephalans. Furthermore, comparisons of patterns of sequence divergence within the Acanthocephala suggest that Prosthenorchis represents a separate genus within the Oligacanthorhynchida. Six distinct haplotypes were identified within P. elegans which grouped into one of two well-supported mtDNA haplogroups. No association between haplogroup/haplotype, holding facility and species was found. This information will help pave the way to the development of molecular-based diagnostic tools for the detection of P. elegans as well as furthering research into the life cycle, intermediate hosts and epidemiological aspects of the species. PMID:26759793

  6. Community ecology of the metazoan parasites of freshwater fishes of Kerala.

    Beevi, M Razia; Radhakrishnan, S

    2012-10-01

    The prevalence and mean intensity of metazoan parasite infection, the community characteristics (richness index, dominance index, evenness index and Shannon index of diversity) and the qualitative similarity of the metazoan parasite fauna among the species and families of the fishes were determined of 13 fish species of freshwater fishes of Kerala belonging to seven families. The metazoan parasite fauna of this geographical area is very diverse; it consisted of 33 species of parasites belonging to seven major taxa: ten species of Monogenea, nine Digenea, two Cestoda, six Nematoda, three Acanthocephala, two Copepoda and one Isopoda. Prevalence of infection ranged from 32.9% (Puntius vittatus) to 87.1% (Mystus oculatus) and mean intensity from 3.8 (Puntius vittatus) to 27.6 (Aplocheilus lineatus). The infra- and component communities of parasites were somewhat characteristic. The dominance pattern of the major taxa was in the order Digenea > Nematoda > Monogenea = Acanthocephala > Cestoda = Copepoda > Isopoda. Macropodus cupanus harboured the richest fauna and Puntius vittatus had the least rich fauna. The parasite fauna of A. lineatus was the most heterogeneous and that of M. cavasius, the most homogeneous. The diversity of the parasite fauna was the greatest in M. cavasius and the least in A. lineatus. The parasite faunas of A. lineatus and M. cupanus and of M. cavasius and M. oculatus were similar. However, in spite of the taxonomic nearness and the similarity of the habits and habitats of the four species of cyprinids (P. amphibius, P. filamentosus, P. sarana and P. vittatus), their parasite fauna were qualitatively very dissimilar-of the seven species of parasites encountered in them only one was shared by the four host species. The cyprinid, Rasbora daniconius, had its own characteristic component community of parasites consisting of six species none of which was shared by the other four cyprinids. The richest parasite fauna was that of the family

  7. Fauna de parasitos metazoários de Pimelodus maculatus La Cépède, 1803 (Siluriformes, Pimelodidae do rio Guandu, Estado do Rio de Janeiro, Brasil - DOI: 10.4025/actascibiolsci.v29i1.130 Metazoan parasite fauna of Pimelodus maculatus La Cépède, 1803 (Siluriformes, Pimelodidae from the Guandu river, Rio de Janeiro State, Brazil

    Sandra Regina Lima de Castro Lemos Pita

    2007-11-01

    Full Text Available Sessenta espéimes de Pimelodus maculatus provenientes do rio Guandu, Estado do Rio de janeiro, foram examinados para estudo de sua parasitofauna, no perído de agosto de 1999 a fevereiro de 2001. Foram coletados espéimes de doze espécies de parasitos metazoários alocados em sete grupos taxonômicos - Monogenoidea: Demidospermus uncusvalidus Gutiérez and Suriano, 1992, D. paravalenciennesi Gutiérez and Suriano, 1992, D. majusculus Kritsky and Gutiérez, 1998 e Scleroductus sp.; Digenea: Austrodiplostomum compactum (Lutz, 1928; Eucestoda: Nomimoscolex sp.; Nematoda: Cucullanus pinnai Travassos, Artigas and Pereira, 1928 e Procamallanus sp. (jovem; Hirudinea: Helobdella sp.; Myxozoa: Henneguya sp. e Myxobolus absonus Cellere, Cordeiro e Adriano, 2002, al駑 de uma esp馗ie de Acanthocephala (cistacanto não identificada. Houve correlação entre o sexo do hospedeiro com a preval麩cia e com a abundâcia de D. paravalenciennesi. A espéie mais dominante na comunidade parasitáia de P. maculatus do rio Guandu foi D. uncusvalidus (50%, seguida de C. pinnai (18,3%. Demidospermus majusculus e Henneguya sp. constituem primeiro registro em P. maculatus. Demidospermus uncusvalidus, D. paravalenciennesi, D. majusculus, Scleroductus sp., Nomimoscolex sp., C. pinnai, Procamallanus sp., Helobdella sp., Henneguya sp. e M. absonus apresentam ampliada sua distribui鈬o geogr畴ica conhecida.Sixty specimens of Pimelodus maculatus from the Guandu River in Rio de Janeiro State were examined to describe their parasitofauna, in the period from August 1999 to February 2001. Specimens of twelve metazoan parasite species were collected, allocated into seven taxonomic groups - Monogenoidea: Demidospermus uncusvalidus Gutiérez and Suriano, 1992, D. paravalenciennesi Gutiérez and Suriano, 1992, D. majusculus Kritsky and Gutiérez, 1998 and Scleroductus sp.; Digenea: Austrodiplostomum compactum (Lutz, 1928; Eucestoda: Nomimoscolex sp.; Nematoda: Cucullanus pinnai

  8. Metazoan parasite fauna of Pimelodus maculatus La Cépède, 1803 (Siluriformes, Pimelodidae from the Guandu river, Rio de Janeiro State, Brazil = Fauna de parasitos metazoários de Pimelodus maculatus La Cépède, 1803 (Siluriformes, Pimelodidae do rio Guandu, Estado do Rio de Janeiro, Brasil

    Michelle Daniele dos Santos

    2007-01-01

    Full Text Available Sixty specimens of Pimelodus maculatus from the Guandu River in Rio de Janeiro State were examined to describe their parasitofauna, in the period from August 1999 to February 2001. Specimens of twelve metazoan parasite species were collected, allocated into seventaxonomic groups - Monogenoidea: Demidospermus uncusvalidus Gutiérrez and Suriano, 1992, D. paravalenciennesi Gutiérrez and Suriano, 1992, D. majusculus Kritsky and Gutiérrez, 1998 and Scleroductus sp.; Digenea: Austrodiplostomum compactum (Lutz, 1928; Eucestoda: Nomimoscolex sp.; Nematoda: Cucullanus pinnai Travassos, Artigas and Pereira, 1928 and Procamallanus sp. (young specimen; Hirudinea: Helobdella sp.; Myxozoa: Henneguya sp. and Myxobolus absonus Cellere,Cordeiro and Adriano, 2002, along with one unidentified species of Acanthocephala (cystacanth. There was a correlation between the host sex and the prevalence and abundance of D. paravalenciennesi. The most dominant species in the parasite community of P. maculatus from the Guandu River was D. uncusvalidus (50%, followed by C. pinnai (18,3%. This study is the first report of D. majusculus and Henneguya sp. in P. maculatus, while it expands the known geographicdistribution of D. uncusvalidus, D. paravalenciennesi, D. majusculus, Scleroductus sp., Nomimoscolex sp., C. pinnai, Procamallanus sp., Helobdella sp., Henneguya sp. and M. absonus.Sessenta espécimes de Pimelodus maculatus provenientes do rio Guandu, Estado do Rio de janeiro, foram examinados para estudo de sua parasitofauna, no período de agosto de 1999 a fevereiro de 2001. Foram coletados espécimes de doze espécies de parasitos metazoáriosalocados em sete grupos taxonômicos - Monogenoidea: Demidospermus uncusvalidus Gutiérrez and Suriano, 1992, D. paravalenciennesi Gutiérrez and Suriano, 1992, D. majusculus Kritsky and Gutiérrez, 1998 e Scleroductus sp.; Digenea: Austrodiplostomum compactum (Lutz,1928; Eucestoda: Nomimoscolex sp.; Nematoda: Cucullanus pinnai

  9. Northeast India Helminth Parasite Information Database (NEIHPID): Knowledge Base for Helminth Parasites

    Debnath, Manish; Kharumnuid, Graciously; Thongnibah, Welfrank; Tandon, Veena

    2016-01-01

    Most metazoan parasites that invade vertebrate hosts belong to three phyla: Platyhelminthes, Nematoda and Acanthocephala. Many of the parasitic members of these phyla are collectively known as helminths and are causative agents of many debilitating, deforming and lethal diseases of humans and animals. The North-East India Helminth Parasite Information Database (NEIHPID) project aimed to document and characterise the spectrum of helminth parasites in the north-eastern region of India, providing host, geographical distribution, diagnostic characters and image data. The morphology-based taxonomic data are supplemented with information on DNA sequences of nuclear, ribosomal and mitochondrial gene marker regions that aid in parasite identification. In addition, the database contains raw next generation sequencing (NGS) data for 3 foodborne trematode parasites, with more to follow. The database will also provide study material for students interested in parasite biology. Users can search the database at various taxonomic levels (phylum, class, order, superfamily, family, genus, and species), or by host, habitat and geographical location. Specimen collection locations are noted as co-ordinates in a MySQL database and can be viewed on Google maps, using Google Maps JavaScript API v3. The NEIHPID database has been made freely available at http://nepiac.nehu.ac.in/index.php PMID:27285615

  10. Helminth parasite communities in anuran amphibians of Kalesar Wildlife Sanctuary (Haryana), India.

    Rizvi, Anjum N; Bhutia, Pasang T

    2010-10-01

    Helminth parasite fauna in anuran amphibia were investigated during the general faunistic surveys of Kalesar Wildlife Sanctuary, situated in Haryana state. Three species of amphibian hosts were found to harbour 12 genera of helminth parasites. The prevalence, intensity and abundance were studied. Euphlyctis cyanophlyctis harboured maximum parasite species followed by Fejervarya limnocharis and Duttaphrynus melanostictus. In E. cyanophlyctis, among nematode parasites, the genus Camallanus was most prevalent followed by Cosmocerca and Cosmocercoides, whereas, Rhabdias and Aplectana were the least prevalent genera. Among trematode parasites, Ganeo was the most prevalent genus and least was Diplodiscus. Acanthocephalus was recovered only once and no cestode infection was found. In F. limnocharis, the most prevalent nematode genus was Oxysomatium, followed by Cosmocerca and the only trematode recorded was Ganeo, whereas, cestode Proteocephalus was also recovered once. In D. melanostictus, only two nematode genera were recovered of which Oxysomatium was dominant followed by Cosmocerca. The helminth parasite community in anuran amphibia of Kalesar WLS comprised 52.9% of nematodes, 46.2% of trematodes, 0.58% cestodes and 0.29% acanthocephala. PMID:21966125

  11. Fauna Europaea: Helminths (Animal Parasitic

    David Gibson

    2014-09-01

    Full Text Available Fauna Europaea provides a public web-service with an index of scientific names (including important synonyms of all living European land and freshwater animals, their geographical distribution at country level (up to the Urals, excluding the Caucasus region, and some additional information. The Fauna Europaea project covers about 230,000 taxonomic names, including 130,000 accepted species and 14,000 accepted subspecies, which is much more than the originally projected number of 100,000 species. This represents a huge effort by more than 400 contributing specialists throughout Europe and is a unique (standard reference suitable for many users in science, government, industry, nature conservation and education. Helminths parasitic in animals represent a large assemblage of worms, representing three phyla, with more than 200 families and almost 4,000 species of parasites from all major vertebrate and many invertebrate groups. A general introduction is given for each of the major groups of parasitic worms, i.e. the Acanthocephala, Monogenea, Trematoda (Aspidogastrea and Digenea, Cestoda and Nematoda. Basic information for each group includes its size, host-range, distribution, morphological features, life-cycle, classification, identification and recent key-works. Tabulations include a complete list of families dealt with, the number of species in each and the name of the specialist responsible for data acquisition, a list of additional specialists who helped with particular groups, and a list of higher taxa dealt with down to the family level. A compilation of useful references is appended.

  12. Helminth fauna parasitizing Pimelodus pohli (Actinopterygii: Pimelodidae) from the upper São Francisco River, Brazil.

    Sabas, Claudia Silveira São; Brasil-Sato, Marilia Carvalho

    2014-01-01

    The parasite fauna of catfish, Pimelodus pohli, from the São Francisco River Basin is presented. A total of 45 catfish from the upper São Francisco River (45°15'44″W 18°13'25″S), were examined from July 2009 to September 2011. Forty-three catfish (95.5%) were infected by at least one parasite species, with 885 parasite specimens being found, distributed across 17 species: Monogenea (Demidospermus uncusvalidus, Pavanelliella pavanellii, and Scleroductus sp.); Eucestoda (plerocercoids of Proteocephalidea); Digenea (metacercariae of Austrodiplostomum compactum, adults of Auriculostoma platense and Kalipharynx sp., and juvenile of Prosthenhystera obesa); Nematoda (larvae of Contracaecum sp., Hysterothylacium sp., Procamallanus pimelodus, Procamallanus sp., and unidentified of Cucullanidae, and adults of Cucullanus caballeroi, Philometra sp., and Procamallanus freitasi); and Acanthocephala (adults of Neoechinorhynchus pimelodi). Procamallanus freitasi and Scleroductus sp. were the taxa with the highest prevalence. Demidospermus uncusvalidus, P. freitasi, and Scleroductus sp. were the dominant species. The host's sex did not influence parasitic indexes; however, the total length of the catfish did appear to have some influence. The parasites, with except for P. obesa, were registered for the first time in P. pohli, as well as the occurrence of Kalipharynx sp. and C. caballeroi among pimelodid hosts from São Francisco River and South America. PMID:25271459

  13. Endoparásitos de micromamíferos del noroeste de Perú. 1: helmintos de marsupiales

    Manuel Tantaleán

    2011-05-01

    Full Text Available En este trabajo, informamos los resultados del análisis parasitológico realizado a 40 individuos marsupiales de las especies Caluromys lanatus, Didelphis marsupialis, Marmosops noctivagus, Metachirus nudicaudatus, Marmosa (Micoureus regina, Monodelphis adusta, Philander andersoni y Philander opossum procedentes del departamento de Loreto, Perú. Se determinaron en total 11 especies de helmintos parásitos: Nematoda: Aspidodera sp., Cruzia tentaculata, Physaloptera mirandai, Physaloptera sp., Pterygodermatites sp., Trichuris sp., Turgida turgida, y Viannaia sp.; Trematoda: Podospathalium pedatum; Acanthocephala: Giganthorhynchus ortizi; y Pentastomida: ninfa. Los parásitos Trichuris sp., Pterygodematities sp., Turgida turgida, Viannaia sp. y Podospathalium pedatum son nuevos registros para el Perú. De igual manera, se registran por primera vez las siguientes asociaciones parásitos-huéspedes: Pterygodermatites sp.-Marmosa regina, Viannaia sp.- Marmosops noctivagus, Trichuris sp.-Marmosops cf. noctivagus, Podospathalium pedatum-Monodelphis adusta, Giganthorhynchus ortizi-Marmosops cf. noctivagus, y ninfas de pentastómidos-Marmosa regina y Metachirus nudicaudatus.

  14. The effect of urbanization on helminth communities in the Eurasian blackbird (Turdus merula L.) from the eastern part of the Czech Republic.

    Sitko, J; Zaleśny, G

    2014-03-01

    In the present study we investigated two ecologically distinct populations of T. merula for the presence of helminths. We wished to determine whether urban populations of blackbirds had reduced helminth fauna compared to birds from forest habitats. Birds were caught in two ecologically distinct sites located in the eastern part of the Czech Republic. A total of 320 birds were examined. The first site was located in Prerov where the birds were obtained from a typical urban population, and the second site was Zahlinice, which constitutes a typical forest area. As a result of parasitological examination, 30 helminth species belonging to Digenea, Cestoda, Nematoda and Acanthocephala were recorded from both sites: 29 species were found in the forested site and 15 in the urban site. The overall prevalence of infection was 93.1% and differed significantly between the sites (Zahlinice 97.2%, Prerov 85.1%). The mean species richness was almost three times higher in the forest population (3.37 ± 0.10) than in the urban one (1.78 ± 0.11). The clear qualitative and quantitative differences in the helminth community of T. merula obtained from two ecologically disparate localities show that urbanization leads to a significant reduction in the helminth fauna of a bird which is highly adapted to synanthropic habitats, while still remaining common in its original forest habitat. PMID:23232073

  15. Larval size in acanthocephalan parasites: Influence of intraspecific competition and effects on intermediate host behavioural changes

    Dianne Lucile

    2012-08-01

    Full Text Available Abstract Background Parasites often face a trade-off between exploitation of host resources and transmission probabilities to the next host. In helminths, larval growth, a major component of adult parasite fitness, is linked to exploitation of intermediate host resources and is influenced by the presence of co-infecting conspecifics. In manipulative parasites, larval growth strategy could also interact with their ability to alter intermediate host phenotype and influence parasite transmission. Methods We used experimental infections of Gammarus pulex by Pomphorhynchus laevis (Acanthocephala, to investigate larval size effects on host behavioural manipulation among different parasite sibships and various degrees of intra-host competition. Results Intra-host competition reduced mean P. laevis cystacanth size, but the largest cystacanth within a host always reached the same size. Therefore, all co-infecting parasites did not equally suffer from intraspecific competition. Under no intra-host competition (1 parasite per host, larval size was positively correlated with host phototaxis. At higher infection intensities, this relationship disappeared, possibly because of strong competition for host resources, and thus larval growth, and limited manipulative abilities of co-infecting larval acanthocephalans. Conclusions Our study indicates that behavioural manipulation is a condition-dependant phenomenon that needs the integration of parasite-related variables to be fully understood.

  16. RESEARCH ABOUT ICHTHYOPARASITOFAUNA OF BANAT REGION

    C.Cojocaru

    2003-01-01

    Full Text Available During the years 2001 and 2002 were parasitologically examined 16 species of fishes (Cyprinus carpio, Carassius auratus gibelio, Scardinius erythrophthalmus, Rutilus rutilus, Abramis brama danubii, Alburnus alburnus, Gobio spp., Leuciscus cephalus, Tinca tinca, Pseudorasbora parva, Esox lucius, Silurus glanis, Stizostedion lucioperca, Perca fluviatilis, Lepomis gibbosus, Acipenser ruthenus. The fish came from rivers (Danube, Bega, Timis, Barzava, Nera and reservoirs (Surduc, Pischia, Sacosu Turcesc, Ghiroda,Ineu and irrigation chanell of Giroc-Chisoda. It has been performed the microscopical examination of gills and skin, as well as the macroscopical and stereomicroscopical examination of organs and muscles, being identified 45 species of parasites as follows:•Protozoa: 8 species (4 species of Myxozoa and 4 species of Ciliata. •Monogena: 5 species•Trematoda: 11 species•Cestoda: 8 species•Nematoda: 7 species•Acanthocephala: 4species•Anellida (Hirudina: 2 species•Crustacea: 5 species (Copepoda: 4 species, Branchiura:1 specia.The variety of parasites from the Banat fishes it is related with the diversity of the regional water conditions.

  17. [Is the parasite fauna of Poland well recognized?].

    Pojmańska, Teresa; Niewiadomska, Katarzyna

    2003-01-01

    The studies of parasite fauna have in Poland a long tradition. Generally the helmint fauna of all groups of vertebrates was more or less examined and as much as over 100 species of Monogenea, almost 400 Digenea, over 250 Cestoda, about 500 Nematoda and 32 Acanthocephala have been recorded. The best recognized are the helminths of fish (especially those of Cyprinidae, Esocidae, Percidae and Salmonidae), frogs examined in various regions of Poland, some birds (especially connected with water environment: Anseriformes, Ciconiformes, Podicipediformes), most of insectivores (although examined only in few localities), European bisons, deers, foxes and wild boars (all under permanent monitoring), as well as domestic animals (cattle, horses, sheeps) and pets. Such groups like some amphibians, reptiles, bats, carniwores, some birds (especially Passeriformes, Charadriiformes, falcons and eagles) need further exploration, as some host species were not the subject of parasitological investigation. In some cases it will be rather difficult goal, as most of these animals are under strict preservation, and only dead (naturally or accidentally) specimens can be autopsied. PMID:16888930

  18. Endoparasitic helminths of the harbour seal, Phoca vitulina, in the Netherlands

    Borgsteede, F. H. M.; Bus, H. G. J.; Verplanke, J. A. W.; van Burg, W. P. J.

    The endoparasitic helminth fauna of harbour seals which had died during the epidemic of the phocine distemper virus in 1988 was studied. Lungs, heart and gastrointestinal tracts of 94 animals collected along the Dutch coast were available for investigation. The following parasites and infection percentages were found: Nematoda: Dipetalonema spirocauda (24.5%), Otostrongylus circumlitus (6.4%), Parafilaroides gymnurus (24.5%), Ascaridoidea spec. (58.5%); Trematoda: Phagicola septentrionalis (66.0%), Cryptocotyle lingua (74.5%); Cestoda: Diphyllobothrium spec. (8.5%); Acanthocephala: Corynosoma strumosum (70.2%). The presence of worm species was not evenly distributed over the age classes. Seals younger than one year harboured fewer parasites. The highest percentages were found in 1 to 2 year old seals. The number of worms per seal varied greatly. The highest burden for ascarids was 253, for P. septentrionalis 123 000, for C. lingua 112 000 and for C. strumosum 251. A comparison of the present results with those described in the literature shows that in Dutch seals the same species were present and that numbers of worms were not higher than before the 1988 mass mortality. It is therefore concluded that helminth parasites did not cause the mass mortality.

  19. Parasitic fauna in hybrid tambacu from fish farms

    Ronilson Macedo Silva

    2013-08-01

    Full Text Available The objective of this work was to evaluate the parasitic fauna of hybrid tambacu (Colossoma macropomum x Piaractus mesopotamicus from fish farms and the host-parasite relationship. A hundred and fourteen fish were collected from four fish farms in Macapá, in the state of Amapá, Brazil, 80.7% of which were infected by: Ichthyophthirius multifiliis (Ciliophora; Piscinoodinium pillulare (Dinoflagellida; Anacanthorus spatulatus, Notozothecium janauachensis, and Mymarothecium viatorum (Monogenoidea; Neoechinorhynchus buttnerae (Acanthocephala; Cucullanus colossomi (Nematoda; Perulernaea gamitanae (Lernaeidae; and Proteocephalidae larvae (Cestoda. A total of 8,136,252 parasites were collected from the examined fish. This is the first record of N. buttnerae, C. colossomi, N. janauachensis, M. viatorum, and Proteocephalidae for hybrid tambacu in Brazil. Ichthyophthirius multifiliis was the most prevalent parasite, whereas endohelminths were the less. A positive correlation was observed between number of I. multifiliis and total length and weight of fish, as well as between number of P. gamitanae and total length. The infection by I. multifiliis had association with the parasitism by Monogenoidea. Low water quality contributes to high parasitism of hybrid tambacu by ectoparasites, which, however, does not influence the relative condition factor of fish.

  20. Gnathostomulida--an enigmatic metazoan phylum from both morphological and molecular perspectives.

    Littlewood, D T; Telford, M J; Clough, K A; Rohde, K

    1998-02-01

    On the basis of few and contentious morphological characters Gnathostomulids have been thought to be the sister-group of either the Platyhelminthes or the Syndermata (Rotifera + Acanthocephala). We provide a full 18S rDNA sequence for a species of Gnathostomula and attempt to resolve its position among the Metazoa, on the basis of molecular evidence. Sixty sequences, representing 30 nominal phyla and including new entoproct and gastrotrich sequences, were used to reconstruct phylogenies using maximum-parsimony, neighbor-joining, and minimum evolution models. We were unable to support either of the morphological hypotheses outright and, moreover, our data supported more strongly a third possible relationship with the gnathostomulids as a member of the Nematoda + Chaetognatha clade. Superficially, as active benthic, vermiform creatures with sclerotized cuticular jaws, they fit a predicted ancestral form of the Nematoda + Chaetognatha clade and, as such, would arguably be members of the Ecdysozoa. The molecular data at least call for a reevaluation of the morphological data and a denser sampling of the lesser phyla. Data from morphology and molecules act synergistically in estimating phylogeny; morphology alone provided limited phylogenetic signal and alternative phylogenetic hypotheses, whereas the molecular solution suggested an alternative topology which, when interpreted in the light of comparative anatomy, may suggest previously unconsidered possibilities. PMID:9479696

  1. Parasites of domestic and wild canids in the region of Serra do Cipó National Park, Brazil Parasitos de canídeos domésticos e silvestres na região do Parque Nacional da Serra do Cipó - Brasil

    Juliana Lúcia Costa Santos

    2012-09-01

    Full Text Available Over recent decades, diseases have been shown to be important causes of extinctions among wild species. Greater emphasis has been given to diseases transmitted by domestic animals, which have been increasing in numbers in natural areas, along with human populations. This study had the aim of investigating the presence of intestinal helminths in wild canids (maned wolf, Chrysocyon brachyurus, and crab-eating fox, Cerdocyon thous in the Serra do Cipó National Park (43-44º W and 19-20º S and endo and ectoparasites of domestic dogs in the Morro da Pedreira Environmental Protection Area (an area surrounding the National Park. The Serra do Cipó is located in the state of Minas Gerais, Brazil. Among the enteroparasites found in domestic and wild canids, the following taxons were identified: Ancylostomidae, Trichuridae, Toxocara sp., Spirocerca sp., Physaloptera sp., Strongyloides sp., Cestoda, Dipylidium caninum, Diphyllobothriidae, Hymenolepidae, Anoplocephalidae, Trematoda, Acanthocephala and Isospora sp. Domestic dogs were positive for leishmaniasis and Babesia canis in serological tests. Among the ectoparasites, Rhipicephalus sanguineus, Amblyomma cajennense and Ctenocephalides felis felis were observed in domestic dogs. Variations in the chaetotaxy of the meta-episternum and posterior tibia were observed in some specimens of C. felis felis.Nas últimas décadas, as doenças têm sido apontadas como importantes causas de extinção de espécies silvestres. Maior ênfase tem sido dada às doenças transmitidas por animais domésticos que crescem em número, bem como as populações humanas, em áreas naturais. O presente estudo objetivou verificar a presença de helmintos intestinais de canídeos silvestres (lobo-guará - Chrysocyon brachyurus e cachorro-do-mato - Cerdocyon thous do Parque Nacional da Serra do Cipó (43-44º W e 19-20º S e endo e ectoparasitos de cães domésticos da Área de Proteção Ambiental Morro da Pedreira (entorno do

  2. Comparative studies on Pb and Cd levels in parasites of terrestrial and aquatic animals

    Sures, B.; Taraschewski, H. [Univ. Karlsruhe (Germany). Zoologisches Institut-Okologie

    1995-12-31

    Several fish parasites (Acanthocephala, Cestoda, Nematoda) and organs of their respective intermediate and final hosts were analyzed for heavy metals by electrothermal atomic absorption spectrometry (ET-AAS). Pb and Cd were also quantified in the liver fluke Fasciola hepatica as well as in different organs of the large intestinal roundworm Ascaris suum. The levels of these heavy metals in the parasites were compared to those of muscle, liver, kidney and intestine of the respective definitive hosts cattle and swine obtained from a slaughter house. Most parasites accumulated significantly higher levels of metals than their final hosts. This was most conspicuous in acanthocephalans which contained up to 3 {times} 10{sup 3} fold more lead than the muscle of their fish hosts and up to 1.1 {times} 10{sup 4} more lead than the water surrounding the fish. In these helminths cadmium was enriched up to 400 fold compared to the muscle of the fish and up to 2.7 {times} 10{sup 4} compared to the water. In contrast to the accumulation capacity of adult acanthocephalans their larvae contained about 30 to 180 times less Pb and Cd. Thus, the predominant accumulation of both metals appears in the adult worms. The cestodes of fish and the liver flukes of cattle accumulated the metals up to 200 fold compared to the muscle of their hosts. The nematodes did not contain higher levels of the metals than their hosts. Thus, parasites, especially acanthocephalans, seem to be sensitive bioindicators of Pb and Cd in their environments.

  3. Estudo comparativo dos helmintos parasitos de peixes do rio Mogi Guassu, coletados nas excursões realizadas entre 1927 e 1985 Comparative study of helminth parasites of fishes from Mogi Guassu river, collected during expeditions between 1927 and 1985

    Anna Kohn

    1987-12-01

    Full Text Available Este trabalho abrange o parasitismo por nematóides, acantocéfalos, trematódeos e cestóides de 1027 peixes pertencentes a 45 espécies do rio Mogi Guassu, examinados nos anos de 1927, 1946, 1947, 1962, 1983 e 1985, como uma contribuição ao conhecimento da fauna parasitária em 58 anos. São relacionadas 32 espécies de nematóides, 21 de trematódeos, três de acantocéfalos e duas de cestóides. São referidos novos hospedeiros para Cucullanus pinnai, Spirocamallanus inopinatus e Travnema travnema, para o trematódeo Pararhipidocotyle jeffersoni e para o acantocéfalo Gorytocephalus spectabilis. São apresentadas medidas adicionais de Creptotrema lynchi, tabelas, gráficos e a lista dos hospedeiros examinados e seus parasitos.This paper concerns the parasitism of Nematoda, Trematoda, Acanthocephala and Cestoda from 1027 fishes of 45 species from Mogi Guassu river, examined in the years 1927, 1946, 1947, 1962, 1983 and 1985 as a contribution to the knowledge of the parasitological fauna in 58 years. Thirty two species of nematodes, 21 of trematodes, 3 of acanthocephalans and 2 of cestodes are reported. New hosts are presented for the nematodes Cucullanus pinnai, Spirocamallanus inopinatus and Travnema travnema, for the trematode Pararhipidocotyle jeffersoni and for the acanthocephalan Gorytocephalus spectabilis. New measurements for the trematode Creptotrema lynchy, tables, graphics and a list of the examined hosts with their parasites are presented.

  4. МАТЕРИАЛЫ К ГЕЛЬМИНТОФАУНЕ ЗЕЛЕНОЙ ЖАБЫ B UFO VIRIDIS LAURENTI, 1768 (AMPHIBIA: ANURA) В САМАРСКОЙ ОБЛАСТИ

    Чихляев, И.

    2014-01-01

    Представлены данные о гельминтофауне зеленой жабы Bufo viridis Laurenti, 1768 на территории Самарской области. Всего обнаружено 14 видов гельминтов из 5 классов: Monogenea (1), Cestoda (1), Trematoda (6), Nematoda (5) и Acanthocephala (1). Типичными паразитами с высокой степенью инвазии являются геонематоды Cosmocerca commutata (Diesing, 1851), Oswaldocruzia filiformis (Goeze, 1782) и Rhabdias bufonis (Schrank, 1788). Моногенеи, цестоды, трематоды и скребни относятся к числу редких паразитов ...

  5. Host range, host ecology, and distribution of more than 11800 fish parasite species

    Strona, Giovanni; Palomares, Maria Lourdes D.; Bailly, Nicholas; Galli, Paolo; Lafferty, Kevin D.

    2013-01-01

    Our data set includes 38 008 fish parasite records (for Acanthocephala, Cestoda, Monogenea, Nematoda, Trematoda) compiled from the scientific literature, Internet databases, and museum collections paired to the corresponding host ecological, biogeographical, and phylogenetic traits (maximum length, growth rate, life span, age at maturity, trophic level, habitat preference, geographical range size, taxonomy). The data focus on host features, because specific parasite traits are not consistently available across records. For this reason, the data set is intended as a flexible resource able to extend the principles of ecological niche modeling to the host–parasite system, providing researchers with the data to model parasite niches based on their distribution in host species and the associated host features. In this sense, the database offers a framework for testing general ecological, biogeographical, and phylogenetic hypotheses based on the identification of hosts as parasite habitat. Potential applications of the data set are, for example, the investigation of species–area relationships or the taxonomic distribution of host-specificity. The provided host–parasite list is that currently used by Fish Parasite Ecology Software Tool (FishPEST, http://purl.oclc.org/fishpest), which is a website that allows researchers to model several aspects of the relationships between fish parasites and their hosts. The database is intended for researchers who wish to have more freedom to analyze the database than currently possible with FishPEST. However, for readers who have not seen FishPEST, we recommend using this as a starting point for interacting with the database.

  6. Gastrointestinal helminths of raccoons (Procyon lotor in western Poland (Lubuskie province - with particular regard to Baylisascaris procyonis

    Karamon Jacek

    2014-12-01

    Full Text Available The aim of the study was to estimate the prevalence of gastrointestinal parasites in raccoons with particular regard to zoonotic parasites. Fifty-five raccoons, hunted or found dead on roads, were examined. The small and large intestines were collected from all raccoons and, additionally, the stomach was collected from 43 animals. The samples were examined with the use of sedimentation and counting technique. The intestines and stomach were examined separately. Samples of raccoon faeces were collected from their environment localised in Słubice district, Lubuskie province (Poland. The samples were collected once a month in 2012. In total, 154 faecal samples were obtained and examined with the use of McMaster flotation technique. The following parasites were detected in the intestinal and stomach contents: tapeworms Mesocestoides sp. (67.3%, Echinostomatidae flukes (34.5%, and nematodes Capillaria sp. (25.5%. Moreover, Acanthocephala were found in the intestines of three raccoons. The highest intensity of infection were observed in case of Mesocestoides sp. Mesocestoides sp. and Echinostomatidae were found statistically more often in the intestines than in the stomach. In the case of these two parasites, there was positive correlation between the intensity of infection in the intestines and the presence of the same parasites in the stomach. Moreover, significantly higher prevalence and intensity of Mesocestoides sp. in males than in females were also observed. Faecal samples contained Baylisascaris procyonis eggs (mean 60 epg. These eggs were found in three samples collected in November and December. Furthermore, in some faecal samples eggs of flukes, Capillaria sp., Mesocystoides sp., and coccidian oocysts were found. It is one of rare reports concerning Baylisascaris procyonis in Poland confirming the presence of this dangerous parasite in Polish raccoon population.

  7. Re-establishment of the fish parasite fauna in the Tisa River system (Slovakia) after a catastrophic pollution event.

    Oros, Mikulás; Hanzelová, Vladimíra

    2009-06-01

    An extensive survey of helminth parasites in 1,316 freshwater fish representing 31 species from two aquatic ecosystems in southeastern Slovakia characterized by different level of environmental pollution was carried out. The helminth species diversity was compared between the Tisa River, heavily polluted with cyanides and heavy metals after a series of ecological disasters in 2000, and the less anthropogenically influenced Latorica River. A parasitological survey found 31 gastrointestinal helminths: Trematoda (11 species), Cestoda (14), Acanthocephala (3) and Nematoda (3). As many as 70 host-parasite combinations have been found. Twenty of them (28.6%) represent new host-parasite finding records for the territory of Slovakia. The component communities were species-poor in both rivers, with high dominance of one to three helminth species. Even though the fish communities were qualitatively similar (ICS = 81%) and the number of fish examined was approximately the same (676 and 640) in both localities, the helminth species richness and diversity of host-parasite combinations were two times lower in the more polluted Tisa River. The helminth communities were also much less abundant in the Tisa River. Based on the Czekanowski-Sørensen similarity index (ICS = 48.8%) and the Percentage similarity index (PI = 19.5%), the helminth communities were qualitatively and quantitatively different in the two rivers. The remarkable lack of species diversity in the Tisa River can be explained by the negative impact of residual contamination of the Tisa river bottom on certain freshwater invertebrates (bivalves and prosobranch mollusks, copepods and amphipods) which serve as obligatory intermediate hosts for the helminths. Four species, the aspidogastrean Aspidogaster limacoides Diesing, 1835, the acanthocephalan Pomphorhynchus tereticollis (Rudolphi, 1809) tapeworms Atractolytocestus huronensis Anthony, 1958 and Khawia sinensis Hsü, 1935 are recorded in Slovakia for the first time

  8. Predicting what helminth parasites a fish species should have using Parasite Co-occurrence Modeler (PaCo)

    Strona, Giovanni; Lafferty, Kevin D.

    2013-01-01

    Fish pathologists are often interested in which parasites would likely be present in a particular host. Parasite Co-occurrence Modeler (PaCo) is a tool for identifying a list of parasites known from fish species that are similar ecologically, phylogenetically, and geographically to the host of interest. PaCo uses data from FishBase (maximum length, growth rate, life span, age at maturity, trophic level, phylogeny, and biogeography) to estimate compatibility between a target host and parasite species–genera from the major helminth groups (Acanthocephala, Cestoda, Monogenea, Nematoda, and Trematoda). Users can include any combination of host attributes in a model. These unique features make PaCo an innovative tool for addressing both theoretical and applied questions in parasitology. In addition to predicting the occurrence of parasites, PaCo can be used to investigate how host characteristics shape parasite communities. To test the performance of the PaCo algorithm, we created 12,400 parasite lists by applying any possible combination of model parameters (248) to 50 fish hosts. We then measured the relative importance of each parameter by assessing their frequency in the best models for each host. Host phylogeny and host geography were identified as the most important factors, with both present in 88% of the best models. Habitat (64%) was identified in more than half of the best models. Among ecological parameters, trophic level (41%) was the most relevant while life span (34%), growth rate (32%), maximum length (28%), and age at maturity (20%) were less commonly linked to best models. PaCo is free to use at www.purl.oclc.org/fishpest.

  9. Survey on parasitic infections in wildcat (Felis silvestris silvestris Schreber, 1777) by scat collection.

    Napoli, Ettore; Anile, Stefano; Arrabito, Carmelo; Scornavacca, Davide; Mazzamuto, Maria Vittoria; Gaglio, Gabriella; Otranto, Domenico; Giannetto, Salvatore; Brianti, Emanuele

    2016-01-01

    Wildcats are endangered felid species living in Europe, Asia, and Africa. Regrettably, scientific information on parasites of wildcats is particularly meager and they often rely on data gained by necropsies of a small number of animals. In the present study, scat collection was used to assess the parasite spectrum of European wildcats living in the Etna Park (Sicily, Italy). Scat collection was performed from May to September 2010 by weekly walking four transects for a total of 391 km. Samples were then analyzed by flotation and sedimentation techniques to investigate wildcat parasitic fauna. A total of 121 scats of wildcats were collected, and parasitic forms (i.e., oocysts, eggs, and larvae) were retrieved in 110 (90.9 %) of the samples. Parasites found were Physaloptera sp. (52.1 %), tapeworms (45.5 %), Toxocara cati (43.8 %), Eucoleus aerophilus (27.3 %), Ancylostoma sp. (22.3 %), Troglostrongylus brevior (15.7 %), trematodes (9.9 %), Isospora felis (4.1 %), Cylicospirura sp. (1.7 %), and Acanthocephala (0.8 %). The prevalence of endoparasitic infections herein recorded is similar to that described in other studies conducted using necropsy technique. The species richness of parasites found in the present survey, with a total of nine helminths and one protozoon, is the highest ever reported for wildcat in Europe. Scat collection and examination are reliable and rapid non-invasive tools which can be used in a systematic survey design to study the parasite spectrum of wildcat as well as that of other endangered wild species. PMID:26377843

  10. The importance of gobies (Gobiidae, Teleostei) as hosts and transmitters of parasites in the SW Baltic

    Zander, C. D.; Strohbach, U.; Groenewold, S.

    1993-02-01

    The parasite fauna of five goby species (Gobiidae, Teleostei) was investigated in the Baltic Sea during the period 1987 to 1990. 13 parasite species were found in samples from the Lübeck Bight: Bothriocephalus scorpii, Schistocephalus sp. (Cestoda); Cryptocotyle concavum, Cryptocotyle lingua, Podocotyle atomon, Derogenes varicus (Digenea); Hysterothylacium sp. (cf. auctum), Contracaecum sp., Anisakis simplex (Nematoda); Corynosoma sp., Echinorhynchus gadi, Neoechinorhynchus rutili, Pomphorhynchus laevis (Acanthocephala). The number of parasite species were: 10 in the sand goby Pomatoschistus minutus, 8 in the black goby Gobius niger, 7 in the two-spotted goby Gobiusculus flavescens, 6 in the common goby Pomatoschistus microps, and 5 in the painted goby Pomatoschistus pictus. Neoechinorhynchus rutili occurred only in P. minutus, and Corynosoma sp. only in G. niger. The extent to which the gobies were parasitized clearly depended on the respective ways of life and, moreover, on the kind of prey ingested by the hosts. Additionally, the age of the hosts might be important. The highest rate of parasitism, more than 60%, was reached by Hysterothylacium sp. in G. niger and by Cryptocotyle concavum in P. microps. Infestation incidence lay mostly below 40% which means a satellite species status (Holmes, 1991). The number of parasite species was highest in summer; the highest intensities of single parasites occurred in spring ( Podocotyle atomon) or autumn ( Crytocotyle concavum). Bothriocephalus scorpii, Hysterothylacium sp. and Podocotyle infested their juvenile hosts very early, but only Hysterothylacium was accumulated by G. niger during its whole life span, whereas Bothriocephalus persisted also in older gobies in low intensities. The cercariae of Cryptocotyle spp. penetrate actively into their hosts; all the other parasites named were transmitted in larval form by prey organisms which consisted mainly of planktonic and benthic crustaceans. The gobies were final hosts

  11. Assessing Biodiversity:A Heavy Task%生物多样性的评估仍是一项艰巨的工作

    宋大祥; 周开亚

    2002-01-01

    这一个在生物多样性中占优势类群方面来.%A comparison of the number of animal species of China and the world is tentatively made based on materials already known. The species diversity of invertebrates belonging to the phyla Gnathostomula, Gastrotricha, Nematomorpha, Onychophora and Pterobranchia are nearly unknown from China's fauna. Besides, many groups are still poorly known and pending further study, such as the invertebrates of the following phyla (or part taxa under them): Porifera, Mesozoa, Nematoda, Acanthocephala, Echiura, Pogonophora, Mollusca, Branchiopoda, Entoprocta, Tardigrada, Pentastoma, Arthropoda and Enteropneusta. The status of threatened animals is also discussed. Forest destruction and over-exploitation of animal resources are undoubtly the main factors threatening species diversity. Besides, water pollution and eutrophication has become major factors bringing many animals, especially freshwater invertebrates, to the verge of extinction. During the past decades Chinese zoologists have exerted great efforts in the study of taxonomy and protection of wild animals, especially the rare and endemic species, as well as those of great economic value. However, in a megadiversity country like China, there is still a large number of species of higher taxa remain to be investigated and inventoried.