WorldWideScience

Sample records for artiodactyla

  1. Fauna characteristics and ecological distribution of Carnivora and Artiodactyla in Niubeiliang National Nature Reserve,China

    Institute of Scientific and Technical Information of China (English)

    ZENG Zhigao; SONG Yanling; MA Yingtai; WANG Xifeng; WU Xuntao; XIE Zhenfeng; SHAO Jianbin; LI Chunning

    2007-01-01

    Niubeiliang National Nature Reserve (NNR,108°45'-109°04'E,33°47'-33°56'N)is located on the eastern range of the Qinling Mountains in Shannxi Province,China and spans the southern and northern slopes of Mt.Qiuling.A transect survey and investigation were carried out in NNR to determine the fauna characteristics and ecological distribution of carnivora and artiodactyla from May 2003 to August 2004.The NNR has 18 mammals (carnivore and artiodactyl),two of which belong to the first class and seven to the second class of state key protected wildlife in China.The results of this study indicated that ungulates were abundant in the NNR,as all ungulates that were distributed within bit.Qiuling could be found within the reserve.However,only45.5%of the carnivores distributed within Mt.Qinling were detected within the NNR.Among the mammals,there were 12 oriental species (66.7%),1 palearctic specie (5.5%)and 5 widely-distributed species (27.8%).The NNR is a crossing area of palearctic species and oriental species on the zoogeographical regions,and it is a transitional area from the oriental realm to the palearctic realm.The results of the analysis on the ecological distribution of carnivore and artiodactyl in the area showed that their elevation ranges had large differences.The species whose elevation ranges above 1300 m,about 1000 m,and in 450-700 m occupied one third respectively.The results also indicated that species richness for the mammals in the NNR peaked at a middle elevation (rising at first,then descending with the increase in elevation).Not only on the southern slope,but also on the northern slope of Mt.Qinling,the number of species distributed in the area at 1800-2200 m a.s.l.was the largest (more than 80%),while the number of species distributed in the area above 2 600 m a.s.l.was the smallest (about 50%).Elevation gradients of species richness for the mammals in the NNR also embodied the mammal distributions among the vegetation types.The number of species

  2. [Forage use and availability for white tailed deer Odocoileus virginianus thomasi (Artiodactyla: Cervidae) in an experimental unit of Campeche, Mexico].

    Science.gov (United States)

    Granados, Danilo; Tarango, Luis; Olmos, Genaro; Palacio, Jorge; Clemente, Fernando; Mendoza, Germán

    2014-06-01

    Forage use and availability for white tailed deer Odocoileus virginianus thomasi (Artiodactyla: Cervidae) in an experimental unit of Campeche, Mexico. In Campeche state, 122 Wildlife Conservation and Management Units have been recently conformed. In these units, eventhough the white tailed deer Odocoileus virginianus thomasi is a game species, no studies on its diet have been undertaken. The objectives of this work were to estimate the botanical composition of the diet and its seasonal change, to determine forage availability, carrying capacity and stocking rate of O. virginianus thomasi. The study was conducted in the experimental unit of Colegio de Postgraduados in Campeche, Mexico, from October 2010 to May 2012. The diet was determined through microhistological analyses of the white tailed deer feces by the use of reference material. Forage availability was determined through the Adelaide's method; the stocking rate, using the grazing pressure factor; and carrying capacity considering forage availability and 35% of utilization efficiency. In this experimental unit, the deer diet included 40 species belonging to 15 families. The highest species richness ocurred during the rainy season with 29 species. However, deers preferred shrubs during all seasons, and herbaceous species during the rainy season. The diet composition, forage availability, carrying capacity and stocking rate varied throughout the year. Carrying capacity ranged from 0.04 to 1.08deer/ha. Additional studies are required to detail about the composition of the diet, habitat availability and use throughout its geographical range, and to detail on nutritional and health aspects.

  3. Procapra picticaudata (Artiodactyla: Bovidae)

    Science.gov (United States)

    Leslie,, David M.

    2010-01-01

    Procapra picticaudata Hodgson, 1846, is commonly called the Tibetan gazelle, goa (= Tibetan), or zang yuan ling (= Chinese) and is monotypic. It is a high-elevation specialist endemic to the Tibetan Plateau where it prefers alpine meadow and alpine steppe but uses other lower-elevation plains and valleys. It is partial to good grasslands with high diversity of forbs. There have been no systematic estimates of total numbers of P. picticaudata. Populations are currently widespread but have been reduced from historic levels and are vulnerable because of poaching in remote areas and competition with livestock of pastoralists. P. picticaudata is uncommon in zoos and private collections. It is a threatened Class II species in China and considered “Near Threatened" by the International Union for Conservation of Nature and Natural Resources.

  4. Przewalskium albirostre (Artiodactyla: Cervidae)

    Science.gov (United States)

    Leslie,, David M.

    2010-01-01

    Przewalskium albirostre (Przewalski, 1883) is a physically unique cervid commonly called the white-lipped deer. Przewalskium is monotypic. This species is a high-elevation specialist endemic to the eastern Tibetan Plateau where it inhabits relatively open hills and mountains with a mosaic of forest edges, meadows, and shrublands. Populations of P. albirostre are highly fragmented and vulnerable because of exploitation and competition with domestic livestock of pastoralists. There have been no systematic efforts to estimate the total number of extant P. albirostre, and it is considered Vulnerable by the International Union for Conservation of Nature and Natural Resources. It is farmed for its antlers in China and is represented in zoos and private collections.

  5. Elaphodus cephalophus (Artiodactyla: Cervidae)

    Science.gov (United States)

    Leslie,, David M.; Lee, D.; Dolman, Richard W.

    2013-01-01

    Elaphodus cephalophus Milne-Edwards, 1872 (tufted deer) is usually considered polytypic with 3 or 4 recognized subspecies, depending on the source. It is a small dark chocolate-brown deer typified by a tuft of hair on its crown, sharp upper canines that protrude downward from under the upper lip, and rudimentary antlers on males; it is similar to muntjacs, to which it is closely related. E. cephalophusoccurs in humid, montane forests at elevations of 300–4,750 m in southwestern through southeastern China and perhaps northwestern Myanmar (historical records). Vulnerable to poaching in remote areas and relatively uncommon in zoos, it is considered vulnerable as a Class II species in China and listed as “Near Threatened” by the International Union for Conservation of Nature and Natural Resources.

  6. Potamochoerus porcus (Artiodactyla: Suidae)

    Science.gov (United States)

    Leslie,, David M.; Huffman, Brent A.

    2015-01-01

    Potamochoerus porcus (Linnaeus, 1758) is a monotypic suid commonly known as the red river hog. It is 1 of 2 species in the genus Potamochoerus and among the smallest and most plesiomorphic (ancestral) of the 8 African suids. This is the brightest colored wild pig species and is identified by its rufous coat and white dorsal crest; spectacled black-and-white facemask; and elongated, leaf-shaped ears that end in terminally drooping tufts of hair. P. porcus lives in damp forests throughout the rainforest belt of western and central Africa; it never ranges far from thick vegetative cover, soft soils, and water. Although P. porcus is commonly harvested for subsistence and urban bushmeat markets, it is considered of “Least Concern” by the International Union for Conservation of Nature and Natural Resources.

  7. Haemonchus longistipes Railliet & Henry, 1909 (Nematoda, Trichostrongylidae) from the Egyptian dromedary, Camelus dromedarius (Artiodactyla: Camelidae), first identification on the basis of light and ultrastructural data.

    Science.gov (United States)

    Morsy, Kareem; Bashtar, Abdel-Rahman; Fol, Mona; Yehia, Salma

    2014-12-01

    Haemonchus longistipes is a gastrointestinal abomasal nematode which is one of the most prevalent and pathogenic parasites infesting the stomach of ruminants. On the basis of light and ultrastructural data, the objective of the present study was to introduce a first identification of the cameline haemonchosis caused by H. longistipes. Abomasa of 42 Egyptian camels Camelus dromedarius (Artiodactyla: Camelidae) were collected monthly from September 2013 to April 2014 from the main slaughter house of Cairo, Egypt. Adult male and female nematode worms were recovered from 26 (62%) specimens of the examined abomasa. The parasites were of yellow color; the body was filiform (slender) tapered towards the anterior end in male and towards both ends in female. Buccal capsules absent, the buccal cavity was small with a conspicuous dorsal lancet extended from dorsal wall. The cervical papillae were prominent and spine-like. The body length of the female worm was 16.6-20.5 (18.5 ± 0.3) mm. The anterior end to the cervical papillae was 3.19-4.30 (4.12 ± 0.5) mm. The vulva of the female had a linguiform process or flap, the tail is without a spine, and the anal pore at the posterior end of the body had a simple dorsal rim. The body of male was 10.4-14.7 (13.9 ± 2.0) mm in length. The male bursa had elongated lobes supported by long, slender rays. The small dorsal lobe was asymmetrical with Y-shaped dorsal rays. The spicules were long with a length of 0.52-0.54 (0.53 ± 0.05) mm, each provided with a small barb and pore near its extremity. Synlophe was bilaterally and dorsoventrally symmetrical; it extended from cephalic expansion over anterior 50% of prebursal or prevulvar body and consisted of a maximum of 42 ridges. The described species herein was compared with the three morphologically similar species Haemonchus mitchelli, Haemonchus okapiae, and H. longistipes with their synlophes consist of 42 ridges distributed over the anterior half of the body. These

  8. Catalog of type specimens of recent mammals: Orders Carnivora, Perissodactyla, Artiodactyla, and Cetacea in the National Museum of Natural History, Smithsonian Institution

    Science.gov (United States)

    Fisher, Robert D.; Ludwig, Craig A.

    2016-01-01

    The type collection of Recent mammals in the Division of Mammals, National Museum of Natural History, Smithsonian Institution, contains 612 specimens bearing names of 604 species-group taxa of Carnivora, Perissodactyla, Artiodactyla, and Cetacea as of May 2016. This catalog presents an annotated list of these holdings comprising 582 holotypes; 16 lectotypes, two of which are newly designated herein; 7 syntypes (15 specimens); and 1 neotype. Included are several specimens that should be in the collection but cannot be found or are now known to be in other collections and therefore are not in the database. Thirty-seven of the names are new since the last type catalog covering these orders, Arthur J. Poole and Viola S. Schantz’s 1942 “Catalog of the Type Specimens of Mammals in the United States National Museum, Including the Biological Surveys Collection” (Bulletin of the United States National Museum, 178). One of these, Lutra iowa Goldman, 1941, was transferred to the National Museum’s Paleobiology Department collection and is mentioned only briefly in this work. Orders and families are arranged systematically following D. E. Wilson and D. M. Reeder’s 2005 Mammal Species of the World: A Taxonomic and Geographic Reference, third edition, volume 1; within families, currently recognized genera are arranged alphabetically, and within each currently recognized genus, species and subspecies accounts are arranged alphabetically by original published name. Information in each account includes original name and abbreviated citation thereto, current name if other than original, citation for first use of current name combination for the taxon, type designation, U.S. National Museum catalog number(s), preparation, age and sex, date of collection and collector, original collector number, type locality, and remarks as appropriate. Digital photographs of each specimen will serve as a condition report and will be attached to each electronic specimen record. An addendum

  9. Notes on the systematics of Babyrousa (Artiodactyla, Suidae)

    NARCIS (Netherlands)

    Groves, C.P.

    1980-01-01

    SUMMARY Skins and skulls of Babyrousa babyrussa have been studied ; the species is divisible into three living subspecies : B. b. babyrussa (syn. frosti) from Buru and Sula, B. b. togeanensis from Malenge, and B. b. celebensis from the northern arm of Celebes. A skull from near Kulawi, central Celeb

  10. Ovarian folliculogenesis in collared peccary, Pecari tajacu (Artiodactyla: Tayassuidae).

    Science.gov (United States)

    Guimarães, Diva Anelie; de Garcia, Sylvia Cristina Garcia; Ferreira, Maria Auxiliadora Pantoja; da Silva, Suleima do Socorro Bastos; de Albuquerque, Natália Inagaki; Le Pendu, Yvonnick

    2012-03-01

    The sustainability and production of collared peccary (Pecari tajacu) has been studied in the last few years; however, further information on its reproduction is necessary for breeding systems success. Understanding folliculogenesis aspects will contribute to effective reproductive biotechniques, which are useful in the preservation and production of wildlife. The aim of this study was-to evaluate the ovarian folliculogenesis in collared peccary. Ovaries from six adult females of collared peccary were obtained through ovariectomy and analyzed. These were fixed in aqueous Bouin's solution and sectioned into 7 microm slices, stained with hematoxilin-eosin and analyzed by light microscopy. The number of pre-antral and antral follicles per ovary was estimated using the Fractionator Method. The follicles, oocytes and oocyte nuclei were measured using an ocular micrometer. Results showed that the length, width, thickness, weight, and the gross anatomy of the right and left ovaries were not significantly different. However, the mean number of corpora lutea was different between the phases of the estrous cycle (pcollared peccary.

  11. Cellular scaling rules for the brain of Artiodactyla include a highly folded cortex with few neurons.

    Science.gov (United States)

    Kazu, Rodrigo S; Maldonado, José; Mota, Bruno; Manger, Paul R; Herculano-Houzel, Suzana

    2014-01-01

    Quantitative analysis of the cellular composition of rodent, primate, insectivore, and afrotherian brains has shown that non-neuronal scaling rules are similar across these mammalian orders that diverged about 95 million years ago, and therefore appear to be conserved in evolution, while neuronal scaling rules appear to be free to vary in a clade-specific manner. Here we analyze the cellular scaling rules that apply to the brain of artiodactyls, a group within the order Cetartiodactyla, believed to be a relatively recent radiation from the common Eutherian ancestor. We find that artiodactyls share non-neuronal scaling rules with all groups analyzed previously. Artiodactyls share with afrotherians and rodents, but not with primates, the neuronal scaling rules that apply to the cerebral cortex and cerebellum. The neuronal scaling rules that apply to the remaining brain areas are, however, distinct in artiodactyls. Importantly, we show that the folding index of the cerebral cortex scales with the number of neurons in the cerebral cortex in distinct fashions across artiodactyls, afrotherians, rodents, and primates, such that the artiodactyl cerebral cortex is more convoluted than primate cortices of similar numbers of neurons. Our findings suggest that the scaling rules found to be shared across modern afrotherians, glires, and artiodactyls applied to the common Eutherian ancestor, such as the relationship between the mass of the cerebral cortex as a whole and its number of neurons. In turn, the distribution of neurons along the surface of the cerebral cortex, which is related to its degree of gyrification, appears to be a clade-specific characteristic. If the neuronal scaling rules for artiodactyls extend to all cetartiodactyls, we predict that the large cerebral cortex of cetaceans will still have fewer neurons than the human cerebral cortex.

  12. Los Rumiantes (Artiodactyla, Mammalia del Mioceno inferior de La Encinilla (Colmenar Viejo, Madrid

    Directory of Open Access Journals (Sweden)

    Morales, J.

    2006-12-01

    Full Text Available This article is a preliminary study of the fossil ruminants found in the Early Miocene site of La Encinilla (Colmenar Viejo, Madrid. The morphological description of dentition and postcranial bones, along with the metrical and comparative study with material from localities of similar age in France and Spain has allowed us to confirm the presence of two Pecoran ruminants in La Encinilla: Andegameryx sp. and a larger species related to Teruelia Moyá-Solá, 1987. Although the identification in one of the cases should be confirmed with more material, the record in the Madrid Bassin would represent new information regarding the known biogeographical distribution of both taxa. The systematic position of Andegameryx and Teruelia is still under discussion, but both forms are clearly distinct from the Cervoidea ruminants found in Europe and the Iberian Peninsula at the same age, such as Amphitragulus, Oriomeryx, Bedenomeryx or Dremotherium.Este trabajo constituye un estudio preliminar de los restos de rumiantes fósiles hallados en el yacimiento del Mioceno inferior de La Encinilla (Colmenar Viejo, Madrid. La descripción morfológica de la dentición y del esqueleto postcraneal, así como el estudio métrico y comparativo con material procedente de localidades francesas y españolas de edad similar ha permitido constatar hasta el momento la presencia de dos formas de rumiantes Pecora en La Encinilla: Andegameryx sp. y un rumiante de mayor talla relacionado con Teruelia Moyá-Solá, 1987. Aunque la identificación en uno de los casos necesitaría confirmarse con más material, la presencia de estas dos formas en la Cuenca de Madrid ampliaría la distribución biogeográfica conocida para ambos taxones. La posición sistemática de Andegameryx y Teruelia permanece abierta a discusión, pero ambos géneros se diferencian de los Cervoidea del Mioceno inferior encontrados en Europa y la Península Ibérica, tales como Amphitragulus, Oriomeryx, Bedenomeryx o Dremotherium.

  13. Origins and branchings of the brachial plexus of the gray brocket deer Mazama gouazoubira (Artiodactyla: Cervidae

    Directory of Open Access Journals (Sweden)

    Lucélia Gonçalves Vieira

    2013-03-01

    Full Text Available The brachial plexus is a set of nerves originated in the cervicothoracic medular region which innervates the thoracic limb and its surroundings. Its study in different species is important not only as a source of morphological knowledge, but also because it facilitates the diagnosis of neuromuscular disorders resulting from various pathologies. This study aimed to describe the origins and branchings of the brachial plexus of Mazama gouazoubira. Three specimens were used, belonging to the scientific collection of the Laboratory for Teaching and Research on Wild Animals of Universidade Federal de Uberlandia (UFU; they were fixed in 3.7% formaldehyde and dissected. In M. gouazoubira, the brachial plexus resulted from connections between the branches of the three last cervical spinal nerves, C6, C7, C8, and the first thoracic one, T1, and it had as derivations the nerves suprascapular, cranial and caudal subscapular, axillary, musculocutaneous, median, ulnar, radial, pectoral, thoracodorsal, long thoracic and lateral thoracic. The muscles innervated by the brachial plexus nerves were the supraspinatus, infraspinatus, subscapularis, teres major, teres minor, deltoid, cleidobrachial, coracobrachialis, biceps brachialis, brachial, triceps brachialis, anconeus, flexor digitorum superficialis, flexor digitorum profundus, flexor carpi radialis, flexor carpi ulnaris, extensor carpi radialis, lateral ulnar, extensor carpi obliquus, extensor digitorum, superficial pectoral, deep pectoral, ventral serratus, and external oblique abdominal.

  14. Cellular scaling rules for the brain of Artiodactyla include a highly folded cortex with few neurons

    Directory of Open Access Journals (Sweden)

    Rodrigo eSiqueira Kazu

    2014-11-01

    Full Text Available Quantitative analysis of the cellular composition of rodent, primate, insectivore and afrotherian brains has shown that nonneuronal scaling rules are similar across these mammalian orders that diverged about 95 million years ago, and therefore appear to be conserved in evolution, while neuronal scaling rules appear to be free to vary in a clade-specific manner. Here we analyze the cellular scaling rules that apply to the brain of artiodactyls, a group within the order Cetartiodactyla, believed to be a relatively recent radiation from the common Eutherian ancestor. We find that artiodactyls share nonneuronal scaling rules with all groups analyzed previously. Artiodactyls share with afrotherians and rodents, but not with primates, the neuronal scaling rules that apply to the cerebral cortex and cerebellum. The neuronal scaling rules that apply to the remaining brain areas are however distinct in artiodactyls. Importantly, we show that the folding index of the cerebral cortex scales with the number of neurons in the cerebral cortex in distinct fashions across artiodactyls, afrotherians, rodents, and primates, such that the artiodactyl cerebral cortex is more convoluted than primate cortices of similar numbers of neurons. Our findings suggest that the scaling rules found to be shared across modern afrotherians, glires and artiodactyls applied to the common Eutherian ancestor, such as the relationship between the mass of the cerebral cortex as a whole and its number of neurons. In turn, the distribution of neurons along the surface of the cerebral cortex, which is related to its degree of gyrification, appears to be a clade-specific characteristic. If the neuronal scaling rules for artiodactyls extend to all cetartiodactyls, we predict that the large cerebral cortex of cetaceans will still have fewer neurons than the human cerebral cortex.

  15. Andegameryx andegaviensis Ginsburg, 1971 (Artiodactyla, Ruminantia, from the early Miocene site of Estrepouy (MN3, France

    Directory of Open Access Journals (Sweden)

    Morales, J.

    2011-12-01

    Full Text Available Several dental remains from the Early Miocene of Estrepouy (MN3, France previously reported as Amphitragulus aurelianensis by Roman & Viret (1934 are described in this work and assigned to Andegameryx andegaviensis Ginsburg, 1971. The re-study of this material and the comparison with other remains of A. andegaviensis from several european localities of the early Miocene, including the type locality of the species, have permitted us to confirm the presence of A. andegaviensis in the ruminant fauna from Estrepouy.En esta nota describimos algunos de los restos del yacimiento del Mioceno inferior de Estrepouy (MN3, Francia atribuidos por Roman & Viret (1934 a Amphitragulus aruelianensis, cambiando su asignación a Andegameryx andegaviensis Ginsburg, 1971. El reestudio del material y su comparación con los restos de A. andegaviensis de otras localidades europeas del Mioceno inferior, incluyendo la localidad tipo de la especie, permiten confirmar su presencia entre la fauna de rumiantes fósiles de Estrepouy.

  16. Divergent evolution in the cytoplasmic domains of PRLR and GHR genes in Artiodactyla

    Directory of Open Access Journals (Sweden)

    Li Meng-Hua

    2009-07-01

    Full Text Available Abstract Background Prolactin receptor (PRLR and growth hormone receptor (GHR belong to the large superfamily of class 1 cytokine receptors. Both of them have been identified as candidate genes affecting key quantitative traits, like growth and reproduction in livestock. We have previously studied the molecular anatomy of the cytoplasmic domain of GHR in different cattle breeds and artiodactyl species. In this study we have analysed the corresponding cytoplasmic signalling region of PRLR. Results We sequenced PRLR gene exon 10, coding for the major part of the cytoplasmic domain, from cattle, American bison, European bison, yak, sheep, pig and wild boar individuals. We found different patterns of variation in the two receptors within and between ruminants and pigs. Pigs and bison species have no variation within GHR exon 10, but show high haplotype diversity for the PRLR exon 10. In cattle, PRLR shows lower diversity than GHR. The Bovinae PRLR haplotype network fits better the known phylogenetic relationships between the species than that of the GHR, where differences within cattle breeds are larger than between the different species in the subfamily. By comparison with the wild boar haplotypes, a high number of subsequent nonsynonymous substitutions seem to have accumulated in the pig PRLR exon 10 after domestication. Conclusion Both genes affect a multitude of traits that have been targets of selection after domestication. The genes seem to have responded differently to different selection pressures imposed by human artificial selection. The results suggest possible effects of selective sweeps in GHR before domestication in the pig lineage or species divergence in the Bison lineage. The PRLR results may be explained by strong directional selection in pigs or functional switching.

  17. Phylogenetic analysis of Persian Gazella, Gazella subgutturosa (Artiodactyla: Bovidae based on cytochrome b in central Iran

    Directory of Open Access Journals (Sweden)

    Davoud Fadakar

    2013-12-01

    Full Text Available Persian gazelle, Gazella subgutturosa, exists throughout arid and semiarid regions of Iran and has a key role in these frail ecosystems. Habitat degradation and population decline has placed it on the list of vulnerable species in 2008. The phylogenetic relationships of three Persian gazelle populations in the central part of Iran (i.e. Ghamishlou National Park and Wildlife Refuge, Mouteh Wildlife Refuge in Isfahan province and Kalmand-Bahadoran Protected Area in Yazd province were investigated using parts and short fragments of mitochondrial cytochrome b gene (425 base pairs. A maximum likelihood phylogenetic tree separated the populations of Yazd and Isfahan provinces, but populations within the Isfahan province shared the same clade. All populations were classified as Persian gazelle. The studied populations are facing threats because of road construction, industrial development and urbanization. Accordingly urgent conservation plans are needed to preserve their genetic diversity and prevent them from falling into extinction.

  18. Macro y Microparásitos Descritos para la Familia Tayassuidae (Mammalia: Artiodactyla) -resumen-

    OpenAIRE

    Pedro E Navas-Suárez; Diego Soler-Tovar; Olga Montenegro; Nestor Roncancio; Jimena Cortés; Contreras, J.

    2014-01-01

    Los pecaríes pertenecen a la familia Tayassuidae‚ aunque por sus características morfológicas suelen ser confundidos con porcinos (Familia: Suidae); son conocidas tres especies: el pecarí del Chaco (Catagonus wagneri) en peligro de extinción según la lista roja de la Unión Internacional para la Conservación de la Naturaleza (UICN)‚ distribuido en Bolivia‚ Paraguay y Argentina; pecarí de collar (Pecari tajacu) de preocupación menor (UICN) y distribución desde el sur de Estados Unidos hasta el ...

  19. Survival of European mouflon (Artiodactyla: Bovidae) in Hawai'i based on tooth cementum lines

    Science.gov (United States)

    Hess, S.C.; Stephens, R.M.; Thompson, T.L.; Danner, R.M.; Kawakami, B.

    2011-01-01

    Reliable techniques for estimating age of ungulates are necessary to determine population parameters such as age structure and survival. Techniques that rely on dentition, horn, and facial patterns have limited utility for European mouflon sheep (Ovis gmelini musimon), but tooth cementum lines may offer a useful alternative. Cementum lines may not be reliable outside temperate regions, however, because lack of seasonality in diet may affect annulus formation. We evaluated the utility of tooth cementum lines for estimating age of mouflon in Hawai'i in comparison to dentition. Cementum lines were present in mouflon from Mauna Loa, island of Hawai'i, but were less distinct than in North American sheep. The two age-estimation methods provided similar estimates for individuals aged ???3 yr by dentition (the maximum age estimable by dentition), with exact matches in 51% (18/35) of individuals, and an average difference of 0.8 yr (range 04). Estimates of age from cementum lines were higher than those from dentition in 40% (14/35) and lower in 9% (3/35) of individuals. Discrepancies in age estimates between techniques and between paired tooth samples estimated by cementum lines were related to certainty categories assigned by the clarity of cementum lines, reinforcing the importance of collecting a sufficient number of samples to compensate for samples of lower quality, which in our experience, comprised approximately 22% of teeth. Cementum lines appear to provide relatively accurate age estimates for mouflon in Hawai'i, allow estimating age beyond 3 yr, and they offer more precise estimates than tooth eruption patterns. After constructing an age distribution, we estimated annual survival with a log-linear model to be 0.596 (95% CI 0.5540.642) for this heavily controlled population. ?? 2011 by University of Hawai'i Press.

  20. Reconsideration of the systematics of the Early Pleistocene Cervavitus (Cervidae, Artiodactyla, Mammalia

    Directory of Open Access Journals (Sweden)

    Dong, W.

    2011-12-01

    Full Text Available Cervavitus were usually found from the Late Miocene and Pliocene deposits in East Europe, Middle Asia and North China, but they were found recently in many Early Pleistocene localities in southern China. The latter resulted in the discussion of their systematic status between Cervavitus and Cervus. Here we show the Early Pleistocene forms from southern China are morphometrically more similar to northern China Cervavitus species, and the cladistic analysis shows that the southern China forms are closer to classic Cervavitus species than Cervus and that also proves their systematic status in Cervavitus rather than in Cervus. Cervavitus originated in Moldovan forests of East Europe in the late Vallesian (MN10 from a brachyodont and holometacarpal ancestor with two/three-tined antlers and Palaeomeryx fold and evolved into C. novorossiae. It dispersed into West Europe forests in the earliest Turolian and further west to France in the Ruscinian. It dispersed into northern China forests in the early Turolian and represented by C. shanxius. The great quantity of C. shanxius specimens with brachyodont teeth and complete lateral metacarpals implies the arid Loess Plateau of today was a humid forested region in the Late Miocene. C. shanxius migrated southwards in the Plio-Pleistocene probably due to the drying environment in northern China with uplifting of Himalayas and evolved into C. ultimus and C. fenqii, which survived in southern China until the Early Pleistocene (MNQ18.La revisión sistemática de Cervivatus sugiere que deriva del principal clado de los cérvidos posteriores a los muntiacinos, e implica que Procervulinae, Dicrocerinae y la primeras formas de Munticiacinae serían holometacarpales, como también lo es Cervivatus, originario en los bosques de Moldavia (Europa del Este durante el Vallesiense final (MN 10, a partir de un antecesor braquiodonto y holometacarpal, con astas con dos o tres candiles y pliegue paleomerícido, y que da lugar a C. novorossiae. Este se dispersó a Europa occidental durante el comienzo del Turoliense, y más al oeste a Francia durante el Rusciniense. Su dispersión en los bosques del norte de China se produjo también a comienzos del Turoliense, estando representado por C. shanxius. Existe una gran cantidad de ejemplares de C. shanxius con metápodos laterales completos, que debían ser útiles para equilibrar el cuerpo en las ramas de los árboles. Las áridas mesetas loésicas actuales fueron bosques húmedos durante el Mioceno final. C. shanxius emigró hacia el sur durante el Plio-Pleistoceno probablemente debido al ambiente más seco del norte de China, como consecuencia de la elevación de los Himalayas, dando lugar a C. ultimus y C. fenqii, que sobrevivieron en el sur de China hasta el Pleistoceno inicial (MNQ18.

  1. [Odocoileus virginianus diet (Artiodactyla: Cervidae) in a temperate forest of Northern Oaxaca, Mexico].

    Science.gov (United States)

    González, Graciela; Briones-Salas, Miguel

    2012-03-01

    The Sierra Madre de Oaxaca region, located in the Northern state of Oaxaca, Mexico, is an area of forest ecosystems subject to high exploitation rates, although in some areas its temperate forests are conserved by indigenous community initiatives that live there. We analyzed the diet of white tailed-deer (Odocoileus virginianus) in the localities of Santa Catarina Lachatao and San Miguel Amatlán from June 1998 to August 1999. Sampling was done during both the wet and dry seasons, and included the observation of browsing traces (238 observations), microhistological analysis of deer feces (28 deer pellet-groups), and two stomach content analysis. The annual diet of white-tailed deer was composed of 42 species from 23 botanical families. The most represented families in the diet of this deer were Fagaceae, Asteraceae, Ericaceae and Fabaceae. There were significant differences in the alpha diversity of the diet during the wet and dry seasons (H'=2.957 and H'=1.832, respectively). The similarity percentage between seasons was 56%. Differences in plant species frequency were significantly higher during the wet season. Herbaceous plants made up the greatest percentage of all the species consumed. The preferred species throughout the year were Senecio sp. (shrub), Sedum dendroideum (herbaceous), Arctostaphylos pungens (shrub) and Satureja macrostema (shrub). Diet species richness was found to be lower than that observed in a tropical forest (Venezuela), tropical dry forest (Mexico) and temperate deciduous and mixed forest (Mexico), but similar to the diet species richness observed in a tropical dry forest (Costa Rica) and temperate coniferous and deciduous forests (USA).

  2. Características morfológicas da distribuição vascular cerebral de Sus scrofa Linnaeus (Mammalia, Artiodactyla Morphological characteristics of the cerebral vascular distribution of Sus scrofa Linnaeus (Mammalia, Artiodactyla

    Directory of Open Access Journals (Sweden)

    Jurandyr de A. Câmara Filho

    2004-12-01

    Full Text Available O objetivo do presente estudo foi verificar a vascularização arterial do encéfalo do javali, Sus scrofa Linnaeus, 1758, Suidae, e comparar com outras espécies. Cinco machos e cinco fêmeas foram injetados com látex colorido. O suprimento arterial do encéfalo foi descrito e análises morfológicas foram feitas. Nesta espécie o circuito arterial do encéfalo é formado por ramos da artéria carótida interna, como: as artérias comunicantes caudais, o ramo rostral, as artérias cerebrais rostrais, e artérias comunicantes rostrais.The aim this study was to verify the arterial vascularization of the wild boar brain, Sus scrofa Linnaeus, 1758, Suidae, and compare with other species. Five male and five female were injected with colored latex. The arterial supply of the brain was described and were done morphological analyses. In this species the arterial circuit of the brain is formed by the internal carotid artery branches, such as: the caudal communicant arteries, rostral branch, rostral cerebral arteries and rostral communicant arteries.

  3. Topographic anatomy of the spinal cord and vertebromedullary relationships in Mazama gouazoubira Fisher, 1814 (Artiodactyla; Cervidae = Anatomia topográfica da medula espinal e relações vértebromedulares em Mazama gouazoubira Fisher, 1814 (Artiodactyla; Cervidae

    Directory of Open Access Journals (Sweden)

    Fabiano Campos Lima

    2010-04-01

    Full Text Available To gain an understanding of the detailed anatomical aspects of Mazamagouazoubira (brocket deer, this paper describes the relationships between its spinal cord and the vertebral canal, adding information with a clinical and surgical approach. Three specimens of M. gouazoubira were prepared following the methods normally used inanatomy. The epaxial muscles and vertebral arches were removed to expose the spinal cord and the spinal nerve roots. The dimensions of the medullary segments were measured using a pachymeter with 0.05 mm precision. The spinal cord is cylindroidal, dorsoventrally flattened, with an average craniosacral length of 656.27 mm, and has two dilatations corresponding to the cervical and lumbar intumescences. The cervical, thoracic, lumbar and sacrocaudal segments showed an average length of 175.07, 226.03, 123.47 and 43.63 mm, with indices of 28.02, 35.34, 19.68 and 6.93%, respectively. The medullary cone, whose average length is 46.27 mm, begins between L2 and L3 and ends between S1 and S2, with a mean index of 7.53%. The overall average distance between the nerve roots of the cervical, thoracic and lumbosacral segments was 2.23, 2.06 and 1.98 cm, respectively.Propondo conhecer os aspectos anatômicos pormenorizados de Mazama gouazoubira (veado catingueiro, o presente trabalho descreve as relações entre sua medula espinal e o canal vertebral, adicionando informações com enfoque clínico-cirúrgico. Utilizaram-se três espécimes de M. gouazoubira que foram preparados seguindo métodos usuais em anatomia. Retirou-se a musculatura epiaxial e os arcos vertebrais para a exposição da medula espinal e raízes dos nervos espinais. As dimensões dos segmentos medulares foram obtidas utilizando um paquímetro de precisão 0,05 mm. A medula espinal possui a forma cilindróide, aplanada dorsoventralmente, com comprimento crânio-sacral médio de 656,27 mm, possui duas dilatações correspondentes às intumescências cervical e lombar. Os segmentos cervical, torácico, lombar e sacro-caudal apresentam 175,07; 226,03; 123,47 e 43,63 mm de comprimento médio, com índices de 28,02; 35,34; 19,68 e 6,93% respectivamente. O cone medular de comprimento médio 46,27 mm inicia-se entre L2 e L3 e termina em S1 e S2, com índice médio de 7,53%. A média geral obtida para a distância entre as raízes dos nervos dos segmentos cervical, torácico e lombossacral foi de 2,23; 2,06 e 1,98 cm, respectivamente.

  4. Monitoring the endangered population of the antelope Kobus leche smithemani (Artiodactyla: Bovidae), in the Bangweulu Ecosystem, Zambia.

    Science.gov (United States)

    Siamudaala, Victor M; Munyeme, Musso; Matandiko, Wigganson; Muma, John B; Munang'andu, Hetron M

    2012-12-01

    Black lechwe (Kobus leche smithemani) is a semi-aquatic medium sized antelope currently enlisted on the IUCN red list of endangered species and is only endemic to the Bangweulu basin of Zambia. Its population has significantly decreased due to floods that took place during the period 1930-1940 from over 250 000-15000 leading the Zambian government to gazette all habitats of Black lechwe into state protected areas, and to establish urgent management strategies needed to save the remaining population from extinction. Using retrospective data, our findings show that the population has increased from 15000 animals in 1954 to 55 632 in 2009. The current population is estimated at 34.77% (55 632/160 000) of the carrying capacity of the Bangweulu basin. Although the Black lechwe is one of the 42 species offered for consumptive utilization by the Zambia Wildlife Authority (ZAWA), only 0.12% and 0.08% of the current stock was offered for safari and resident hunting annually for the period 2005-2009, respectively. Annual quota utilization were estimated at 67% (n=37) and 81% (n=37) for safari and resident hunting, respectively. Hence, overall income obtained from utilization of Black lechwe is very low accounting for only 2.1% of the total revenue earned from wildlife utilization. Although the current population trend is showing a unit increase of 639 animals per year, it is still far below levels ideal for the lucrative utilization. In this study, we demonstrate that adverse ecological changes on wildlife species, can lead to their vulnerability and danger of extinction, and that their recovery to full carrying capacity may demand a considerable amount of time.

  5. El aparato urogenital del pecarí de collar (Pecari tajacu Chordata: Artiodactyla: un estudio anatómico

    Directory of Open Access Journals (Sweden)

    María Vargas García

    2015-01-01

    Full Text Available la finalidad de incrementar la información sobre la fisiología reproductiva del pecarí de collar (Pecari tajacu se realizó una descripción anatómica del aparato urogenital (au de esta especie. Se utilizaron ocho hembras y cinco machos que fueron anestesiados y perfundidos con solución de McKormik. Se realizaron disecciones para extraer el au y se describieron sus componentes. El au del pecarí de collar es característico del mamífero pero presenta similitudes con el au del cerdo. Este trabajo es el primer reporte donde se describe un seno urogenital, las glándulas vestibulares y la musculatura estriada asociada a la vulva. Es también, el primer reporte del au masculino del pecarí de collar, encontrándose algunas características exclusivas de esta especie.

  6. [Food habits of the white-tailed deer, Odocoileus virginianus (Artiodactyla: Cervidae) in Nanchititla Natural Park, Mexico].

    Science.gov (United States)

    Aguilera-Reyes, Ulises; Sánchez-Cordero, Victor; Ramírez-Pulido, José; Monroy-Vilchis, Octavio; López, Georgina Isabel García; Janczur, Mariusz

    2013-03-01

    White-tailed deer is a species with a large behavioral plasticity and adaptation to different habitats, including their food habits. This study was conducted with the aim to determine the food habits of this species in the cloud (BMM) and pine-oak (BPE) forests. Deer scats and plant samples were obtained following standard methods, from Sierra Nanchititla Park in the State of Mexico, from June 1990 to May 1992. A total of 104 deer pellet-groups were collected, and histological analysis for herbivores was used and compared with stock samples of plant tissues collected from the study area. We applied the Spearman correlation and Morisita index to determine alimentary preference. The results showed that the deer consumes 79.44% of plant species from BMM and 20.56% of the BPE. There is a selectivity tendency for 12 of the 14 plant species located in the BMM, while for BPE no tendency was observed. Key species that are part of the elemental diet of the deer in these areas were: Acalypha setosa, Smilax pringlei, Psidium sartorianum and Dendropanax arborea. The consumption of plants did not differ significantly between the dry and rainy seasons in terms of biological form, however, during the dry season there is a tendency to consume trees, and by the end of the rainy season to consume herbs. The data indicate that the deer can be selective with BMM plants, while for the BPE tends to be opportunistic.

  7. Dieta de Odocoileus virginianus (Artiodactyla: Cervidae) en un bosque templado del norte de Oaxaca, México

    OpenAIRE

    Graciela González; Miguel Briones-Salas

    2012-01-01

    La región de la Sierra Madre de Oaxaca, ubicada al norte del estado de Oaxaca, México, es una zona de ecosistemas con alta actividad forestal; en algunas áreas sus bosques templados son conservados por iniciativas de las comunidades indígenas que ahí habitan. Dentro de estos bosques, se analizó la dieta del venado cola blanca (Odocoileus virginianus) en San Miguel Amatlán y Santa Catarina Lachatao entre junio 1998 y agosto 1999. Se utilizó el análisis microhistológico de heces fecales, la obs...

  8. ANÁLISE MORFOLÓGICA DO APARELHO UNGUEAL DO VEADO-CATINGUEIRO (Mazama gouazoubira, Fischer, 1814 (Artiodactyla, Cervidae

    Directory of Open Access Journals (Sweden)

    Lorenna Cardoso Rezende

    2013-06-01

    Full Text Available The species studied in this research is known as gray brocketdeer. Two Mazama gouazoubira (Fischer, 1814 adult exemplars, donated to the Laboratory of Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine, São Paulo University, were preserved in formaldehyde (10%. There are four ungulas or hulls on each member and they protect the distal end of the limb, covering the distal phalanx. The angle of the hoof was measured and samples of the digits were processed for light microscopy and scanning electron microscopy. In macroscopy, the length of the dorsal wall of the hoof measured approximately 2.5 cm, the angle formed at the step was 35° for the forelimb and 33° for the hindlimb. In microscopy, we could visualize the outer stratum as a very thin layer (141.5 μm, the middle stratum, composed of keratin tubular pigment, which is the main support structure of the wall of the hull, and the inner layer containing parallel slides in a longitudinal distribution, which is important to connect the hoof wall to the dorsal and lateral surface of the distal phalanx. The data from the ungular apparatus of the deers studied may help to elucidate the growth and identification of the footprints of these animals.

  9. Case 3018. Cervus gouazoubira Fischer, 1814 (currently Mazama gouazoubira; Mammalia, Artiodactyla): proposed conservation as the correct original spelling

    Science.gov (United States)

    Gardner, A.L.

    1999-01-01

    The purpose of this application is to conserve the spelling of the specific name of Cervus gouazoubira Fischer, 1814 for the brown brocket deer of South America (family Cervidae). This spelling, rather than the original gouazoubira, has been in virtually universal usage for almost 50 years.

  10. 陕西府谷晚中新世蓝牛化石%LATE MIOCENE BOSELAPHINI (BOVIDAE, ARTIODACTYLA) FROM FUGU, SHAANXI PROVINCE, CHINA

    Institute of Scientific and Technical Information of China (English)

    张兆群

    2005-01-01

    尽管中国发现的中新羚(偶蹄目,牛科,蓝牛族)化石较少,但由于其重要的生物年代学意义而备受重视,被作为与欧洲Vallesian期动物群对比的重要分子.描述了新近在陕西府谷喇嘛沟发现的头骨标本.依据下颌骨形态与牙齿特征,将其归入Miotragocerus gregarius (Schlosser,1903).新发现的材料完善了该种的鉴定特征:中等大小的蓝牛类;角心强烈后倾,中等分散度,具前后两条棱,横断面呈椭圆形;雄性个体角心前的额骨部分强烈隆升,雌性个体则无明显隆起;脑颅部分成梯形,其最大宽度在角心后,最小宽度在枕骨位置上;基枕骨前后突之间没有沟槽发育;P2与P3具发育且后置的次尖;p4下后尖前后向扩展.对比研究表明,该种较Miotragocerus spectabilis原始,而后者为中国发现的蓝牛类的最后代表且于中新世末期绝灭.对比巴基斯坦以及欧洲的蓝牛,认为中国的Miotragocerus可能与欧洲的种类关系较为密切,而不同于巴基斯坦的Tragoportax.最新的研究资料表明,Miotragocerus在中国主要发现于晚中新世中晚期(Turolian期),可能在8 Ma之前从欧洲迁移至东亚,由于剧烈的气候及生态环境的改变于晚中新世末期与Urmiatheriinae等大型牛科化石一起绝灭.%Though rarely reported from china, Miotragocerus has long been considered as one of the Vallesian equivalent indicators in the comparison with European faunas. Study on new specimens of Miotragocerus gregarius improves its diagnostic characters. Comparison with European and Pakistan taxa reveals that Miotragocerus possibly migrated into Eastern Asia before 8 Ma, and evolved independently into M. Spectabilis, which went extinct at the end of Lated Miocene together with some large bovids, such as all genera of Urmiatheriinae, due to dramatically climated and ecological changes at the and of the Late Miocene.

  11. Histology, histochemistry and fine structure of the Harderian gland, lacrimal gland and superficial gland of the third eyelid of the European bison, Bison bonasus bonasus (Artiodactyla: Bovidae

    Directory of Open Access Journals (Sweden)

    Joanna Klećkowska-Nawrot

    2015-10-01

    Full Text Available ABSTRACT The macroscopic anatomy and the microscopic and ultrastructural features of the Harderian gland (HG, lacrimal gland (LG and superficial gland of the third eyelid (SGTE of the adult European bison are described. In addition, morphometric studies were conducted and were followed by statistical analysis of the results. Tissue sections were stained with hematoxylin and eosin, methyl green-pyronin Y, periodic acid-Schiff, Alcian blue pH 2.5, aldehyde fuchsin and Hale's dialysed iron. Analysis of the staining showed that the HG has a multilobular tubuloalveolar structure with mixed secretion. The LG and the SGTE have a multilobar tubuloacinar structure with serous secretion in the LG and mucoserous in the SGTE. The TEM study demonstrates that the secretory cells of the HG, LG and SGTE have similar ultrastructural appearance, with two types of secretory vesicles in the cytoplasm of all studied glands. The histochemical staining methods and the TEM study revealed the secretory activity in the HG, LG and SGTE ducts. The structural studies can be important for establishing relations between morphological structure and functions of these glands. It can have clinical implications especially when taking into consideration the protective mechanisms of the eye.

  12. RAPD fingerprinting: use in the analysis of mediterranean populations of European fallow deer, Dama dama Linnaeus, 1758 (Mammalia, Artiodactyla

    Directory of Open Access Journals (Sweden)

    Marco Masseti

    1996-12-01

    Full Text Available Abstract The aim of the present paper is to present a preliminary genetic survey of the fallow deer (Dama dama L., 1758 population of the island of Rhodes (Greece in order to verify its genetic variability. Italian population specimens were chosen as a control group because, as can be ascertained from literature, they have a very low level of variability. The analysis was carried out on hair samples obtained from each population. It was performed on a PCR modified method called RAPD which is based on the amplification of genomic DNA by using a single oligonucleotide of random sequence as a primer. The results of the analysis of the Rhodian specimens show clearly the presence of polymorphic individuals, absent in the Italian deer sampled.

  13. Complete genomic sequence analyses of the first group A giraffe rotavirus reveals close evolutionary relationship with rotaviruses infecting other members of the Artiodactyla.

    Science.gov (United States)

    O'Shea, Helen; Mulherin, Emily; Matthijnssens, Jelle; McCusker, Matthew P; Collins, P J; Cashman, Olivia; Gunn, Lynda; Beltman, Marijke E; Fanning, Séamus

    2014-05-14

    Group A Rotaviruses (RVA) have been established as significant contributory agents of acute gastroenteritis in young children and many animal species. In 2008, we described the first RVA strain detected in a giraffe calf (RVA/Giraffe-wt/IRL/GirRV/2008/G10P[11]), presenting with acute diarrhoea. Molecular characterisation of the VP7 and VP4 genes revealed the bovine-like genotypes G10 and P[11], respectively. To further investigate the origin of this giraffe RVA strain, the 9 remaining gene segments were sequenced and analysed, revealing the following genotype constellation: G10-P[11]-I2-R2-C2-M2-A3-N2-T6-E2-H3. This genotype constellation is very similar to RVA strains isolated from cattle or other members of the artiodactyls. Phylogenetic analyses confirmed the close relationship between GirRV and RVA strains with a bovine-like genotype constellation detected from several host species, including humans. These results suggest that RVA strain GirRV was the result of an interspecies transmission from a bovine host to the giraffe calf. However, we cannot rule out completely that this bovine-like RVA genotype constellation may be enzootic in giraffes. Future RVA surveillance in giraffes may answer this intriguing question.

  14. Regionalización histológica de la glándula dorsal del pecarí de collar (Artiodactyla, Tayassuidae: Pecari tajacu

    Directory of Open Access Journals (Sweden)

    Juan Carlos González Morales

    2015-01-01

    Full Text Available Se describe histológicamente la glándula dorsal de machos y hembras del pecarí de collar en tres regiones: craneal, media y caudal. Con las tinciones Hematocilinaeosina y Tricrómica de Masson observamos una clara regionalización morfológica e histológica de esta glándula y se describe por primera vez la presencia de glándulas tubuloacinares en la región craneal de la glándula dorsal del macho de pecarí, cuya función es aún desconocida.

  15. Los mamíferos fósiles del distrito de Puente de Piedra (Xenarthra, Glyptodontidae; Artiodactyla, Camelidae, Lamini, Grecia, provincia de Alajuela, Costa Rica

    Directory of Open Access Journals (Sweden)

    Eduardo A Pérez

    2013-12-01

    Full Text Available Se presenta el segundo registro fósil de la familia Camelidae, y primero del género Palaeolama para Costa Rica, hallado junto a placas de Glyptotherium. Esta asociación proporciona nuevos datos del Gran Intercambio Biótico Americano. El fósil del Camelidae consiste de un metapodial posterior izquierdo. Con base en estudios anteriores de hallazgos de mamíferos fósiles en localidades cercanas se le asigna una edad Irvingtoniano Temprano.

  16. PARÁMETROS GENÉTICOS PARA CARACTERÍSTICAS REPRODUCTIVAS EN UNA POBLACIÓN DE BÚFALOS (BUBALUS BUBALIS ARTIODACTYLA, BOVIDAE EN EL MAGDALENA MEDIO COLOMBIANO GENETIC PARAMETERS FOR REPRODUCTIVE TRAITS IN A POPULATION OF BUFFALOES (BUBALUS BUBALIS ARTIODACTYLA: BOVIDAE IN THE MIDDLE MAGDALENA REGION OF COLOMBIA

    Directory of Open Access Journals (Sweden)

    Diana María Bolívar Vergara

    2010-12-01

    Full Text Available La investigación se hizo para estimar los componentes de (covarianza y parámetros genéticos para edad al primer parto (EPP e intervalo entre partos (IEP en una población bufalina en el Magdalena Medio Colombiano. Las características evaluadas fueron EPP, IEP entre primer y segundo parto (IEP1-2, IEP entre segundo y tercer parto (IEP2-3 , e IEP entre tercer y cuarto parto (IEP3-4 en un modelo animal multicaracterístico. El IEP con todos los partos (IEPtotal fue analizado en un modelo animal unicaracterístico. Las estimativas de los componentes de varianza fueron obtenidos por el método de máxima verosimilitud restringida libre de derivadas. Las heredabilidades encontradas fueron 0,42; 0,11; 0,07; 0,31 y 0,05±0,061 para EPP, IEP1-2 , IEP2-3 , IEP3-4 y IEPtotal, respectivamente. La heredabilidad encontrada para EPP, sugiere que la selección por esta característica es factible en esta población. La heredabilidad para IEPtotal indica que esta característica está muy influenciada por factores ambientales y genéticos no aditivos. Las correlaciones genéticas entre los diferentes IEP fueron altas y positivas. Las correlaciones genéticas entre EPP y los IEP variaron ampliamente.The research was carried out to estimate (covariance components and genetic parameters for age at first calving (AFC and calving interval (CI in a population of buffaloes located in Middle Magdalena region of Colombia. The traits evaluated were AFC, CI between first and second calving (CI1-2, CI between second and third calving (CI2-3 and CI between third and fourth calving(CI3-4, using animal model multitrait. A single-trait animal model was used for IEP considering all calving (CItotal. Estimative of (covariance components were obtained by the method of derivative free restricted maximum likelihood. Estimates of heritability were 0.42, 0.11, 0.07, 0.31, and 0.05 ± 0.061 for AFC, CI1-2, CI2-3, CI3-4, and CItotal, respectively. The heritability found for AFC, suggest that selection for these traits is feasible in this population. The heritability for CItotal indicates that this trait is strongly influenced by environmental and non-additives genetic factors. Genetic correlations among different IEP were high and positive. Genetic correlations between AFC and the IEP varied widely.

  17. Biometria testicular, eletroejaculação e características seminais de caititus, Tayassu tajacu Linnaeus, 1758 (Mammalia, Artiodactyla, Tayassuidae mantidos em cativeiro na Amazônia Oriental Testicular biometry, electroejaculation and seminal features of captive collared peccaries (Tayassu tajacu Linnaeus, 1758, Artiodactyla, Tayassuidae raised in the Eastern Amazon

    Directory of Open Access Journals (Sweden)

    Priscila Reis Kahwage

    2010-12-01

    Full Text Available Estudos relacionados à obtenção e avaliação de sêmen de Tayassu tajacu são escassos, sendo necessárias pesquisas a respeito. Os objetivos do estudo foram avaliar a biometria testicular de caititus adultos cativos, testar a eficiência da eletroejaculação para obtenção de sêmen e avaliar suas características seminais ao longo do ano. Procedeu-se à eletroejaculação em oito animais adultos e as amostras de sêmen colhidas foram avaliadas quanto às características físicas e morfológicas. Os animais tinham testículo esquerdo com 3,8 ± 0,4 cm X 2,6 ± 0,3 cm e 2,3 ± 0,2 de consistência, e testículo direito com 3,8 ± 0,5 cm X 2,7 ± 0,3 cm e 2,3 ± 0,2 de consistência. A taxa de sucesso nas colheitas foi de 75,21%. O sêmen possuiu: volume 0,81 ± 0,86 mL, concentração 137,44 ± 153 x 106 sptz mL-1, pH 7,92 ± 0,73, motilidade 52,66 ± 28,79%, vigor 2,2 ± 0,8, integridade de membrana plasmática 55,84 ± 28,55%, defeitos maiores 22,87 ± 12,93%, defeitos menores 9,11 ± 5,88% e defeitos totais 31,52 ± 13,81%. Os animais apresentaram simetria testicular, a eletroejaculação se mostrou eficiente para a obtenção de ejaculados em caititus e as flutuações observadas na produção seminal não foram suficientes para caracterizá-los como animais de reprodução sazonal.Research development in semen collection and sperm evaluation of Tayassu tajacu are necessary. The aims of this research were to evaluate testicular biometry of captive collared peccaries, test electroejaculation for semen collection and evaluate seminal characteristics during the year. Eight animals were submitted to electroejaculation and semen samples were evaluated according their physical and morphological characteristics. Left testicles measured 3.8 ± 0.4 cm X 2.6 ± 0.3 cm and presented 2.3 ± 0.2 of consistence, while right testicles were 3.8 ± 0.5 cm X 2.7 ± 0.3 cm and presented 2.3 ± 0.2 of consistence. Success rate on semen collections achieved 75.21%. Semen presented 0.81 ± 0.86 mL (volume, 137.44 ± 153 x 106 sptz mL-1 (sperm concentration, 7.92 ± 0.73 (pH, 52.66 ± 28.79% (sperm motility, 2.2 ± 0.8 (vigour, 55.84 ± 28.55% (plasmatic membrane integrity, 22.87 ± 12.93% (primary defects, 9.11 ± 5.88% (secondary defects and 31.52 ± 13.81% (overall defects. Seminal characteristics showed no expressive variation along the year. Testicular symmetry was observed, electroejaculation was an efficient method to semen collection and slight mensal oscillations of seminal quality were not enough to characterize collared peccaries as seasonal reproductive animals.

  18. Estudo de uma população relictual de veado-campeiro, Ozotoceros bezoarticus (Linnaeus (Artiodactyla, Cervidae no municipio da Lapa, Paraná, Brasil A relictual population study of pampas deer, Ozotoceros bezoarticus (Linnaeus (Artiodactyla, Cervidae at Lapa, Paraná State, Brazil

    Directory of Open Access Journals (Sweden)

    Fernanda Góss Braga Mauro de Moura-Britto

    2000-03-01

    Full Text Available The pampas deer, Ozotoceros bezoarticus (Linnaeus, 1758 was studied between August 1996 and September 1997 at Fazenda Santa Maria (25º34' and 25º36'S, 49º46'and 49º49'W at Lapa, Paraná State. During that period we have collected information on feeding habits, group composition, time of the year for birth of youngsters and time for antlers change. The presence of the animal in the area was confirmed by the finding of vestiges and visual occurrences. Animais were observed feeding on young leaves of soya been (Glicine max, oat (Avenasaliva, ryegrass (Lolium mulliflorum and barley (Hordeum vulgare. Only one female was observed feeding on dry leaves. A stag was observed feeding on a barley ear. Group's average size was 1.5 individual. Stags/female proportion was 1: 0.96. Animais displaying velvet coated antlers were observed in June and July which is in accordance with literature about antlers change in a definite period restricted to winter. Only one youngster was observed in September 1996. It is believed that the species survive in the region despite human activities through adaptation of feeding habits with the introduction of agricultura! species. This population could disappear in a few years because of the small number of individuais and their isolation.

  19. Estimativas de parâmetros populacionais e demográficos de Ozotoceros bezoarticus (Artiodactyla, Cervidae em Piraí do Sul, Paraná, sul do Brasil Estimates of population and demographic parameters of Ozotoceros bezoarticus (Artiodactyla, Cervidae in Piraí do Sul, Paraná, southern Brazil

    Directory of Open Access Journals (Sweden)

    Fernanda G. Braga

    2010-06-01

    Full Text Available Este estudo foi realizado em duas propriedades particulares, situadas no município de Piraí do Sul, sul do Brasil. Foram realizadas 16 fases de campo mensais, com três dias de duração, no período compreendido entre fevereiro de 2001 e maio de 2002, com o objetivo de obter informações sobre a biologia do veado-campeiro (Ozotoceros bezoarticus Linnaeus, 1758 e identificar os principais fatores de impacto sobre o mesmo. Foram computadas 1.065 observações, estimando-se 71,45 indivíduos na população, sendo o tamanho médio dos grupos de 2,29 (DV ± 0,55, e a razão sexual de 0,83. Indivíduos isolados corresponderam a 40% das observações, sendo o maior grupo composto por 10 indivíduos. Registrou-se um pico de nascimentos entre setembro e novembro, embora esses tenham acontecido ao longo de todo o estudo. Foram registrados 34 óbitos, correspondendo a uma mortalidade de 47,6%, sendo as principais causas a predação por Puma concolor (Linnaeus, 1771, a caça e os atropelamentos. A população estudada encontra-se severamente ameaçada, e não sobreviverá por muito tempo a menos que políticas que garantam a sua conservação sejam adotadas. Estas políticas devem incluir o manejo adequado das áreas e o controle dos vetores de pressão.This study was conducted in two private properties in the municipality of Piraí do Sul (Paraná state, southern Brazil. Sixteen monthly visits were made each one lasting three days between February 2001 and May 2002. The study aimed at the observation of pampas deer biology (Ozotoceros bezoarticus Linnaeus, 1758, and the evaluation of main impacts to this population. We computed 1,065 observations of estimated 71.45 individuals. The average size of the groups was 2.29 (SD ± 0.55 animals, and the sexual ratio was 0.83. Isolated deer accounted for 40% of the observations, whereas the largest group comprised 10 individuals. It was recorded a peack period of births between September and November, although births were observed along all the studied period. Thirty-four deaths were recorded corresponding to a 47.6% death rate. The main causes of death were predatory actions by cougar Puma concolor (Linnaeus, 1771, hunting and individuals being run over by motor vehicles. The studied population is seriously endangered and it will not escape extinction unless certain policies to guarantee its conservation are adopted. These policies should include correct management of the areas and control of pressure vectors.

  20. Topographic anatomy of the spinal cord and vertebromedullary relationships in Mazama gouazoubira Fisher, 1814 (Artiodactyla; Cervidae - doi: 10.4025/actascibiolsci.v32i2.5061 Topographic anatomy of the spinal cord and vertebromedullary relationships in Mazama gouazoubira Fisher, 1814 (Artiodactyla; Cervidae - doi: 10.4025/actascibiolsci.v32i2.5061

    Directory of Open Access Journals (Sweden)

    Líria Queiroz Luz Hirano

    2010-05-01

    Full Text Available To gain an understanding of the detailed anatomical aspects of Mazama gouazoubira (brocket deer, this paper describes the relationships between its spinal cord and the vertebral canal, adding information with a clinical and surgical approach. Three specimens of M. gouazoubira were prepared following the methods normally used in anatomy. The epaxial muscles and vertebral arches were removed to expose the spinal cord and the spinal nerve roots. The dimensions of the medullary segments were measured using a pachymeter with 0.05 mm precision. The spinal cord is cylindroidal, dorsoventrally flattened, with an average craniosacral length of 656.27 mm, and has two dilatations corresponding to the cervical and lumbar intumescences. The cervical, thoracic, lumbar and sacrocaudal segments showed an average length of 175.07, 226.03, 123.47 and 43.63 mm, with indices of 28.02, 35.34, 19.68 and 6.93%, respectively. The medullary cone, whose average length is 46.27 mm, begins between L2 and L3 and ends between S1 and S2, with a mean index of 7.53%. The overall average distance between the nerve roots of the cervical, thoracic and lumbosacral segments was 2.23, 2.06 and 1.98 cm, respectively.To gain an understanding of the detailed anatomical aspects of Mazama gouazoubira (brocket deer, this paper describes the relationships between its spinal cord and the vertebral canal, adding information with a clinical and surgical approach. Three specimens of M. gouazoubira were prepared following the methods normally used in anatomy. The epaxial muscles and vertebral arches were removed to expose the spinal cord and the spinal nerve roots. The dimensions of the medullary segments were measured using a pachymeter with 0.05 mm precision. The spinal cord is cylindroidal, dorsoventrally flattened, with an average craniosacral length of 656.27 mm, and has two dilatations corresponding to the cervical and lumbar intumescences. The cervical, thoracic, lumbar and sacrocaudal segments showed an average length of 175.07, 226.03, 123.47 and 43.63 mm, with indices of 28.02, 35.34, 19.68 and 6.93%, respectively. The medullary cone, whose average length is 46.27 mm, begins between L2 and L3 and ends between S1 and S2, with a mean index of 7.53%. The overall average distance between the nerve roots of the cervical, thoracic and lumbosacral segments was 2.23, 2.06 and 1.98 cm, respectively.

  1. Fossil Bovidae from the Malay Archipelago and the Punjab

    NARCIS (Netherlands)

    Hooijer, D.A.

    1958-01-01

    CONTENTS Introduction................... 1 Order Artiodactyla Owen............... 8 Family Bovidae Gray................ 8 Subfamily Bovinae Gill................ 8 Duboisia santeng (Dubois).............. 8 Epileptobos groeneveldtii (Dubois)............ 19 Hemibos triquetricornis Rütimeyer............

  2. Characterizing adaptive morphological patterns related to diet in Bovidae (Mammalia: Artiodactyla)%牛科(哺乳纲:偶蹄目)动物与食物有关的适应形态模式

    Institute of Scientific and Technical Information of China (English)

    Manuel MENDOZA; Paul PALMQVIST

    2006-01-01

    Morphological patterns in the craniodental structure of extant bovids indicative of ecological adaptations for feeding behavior were identified by stepwise discriminant analysis (SCDA). The analyses were carried out using 28 craniodental measurements from 72 extant bovid species. The discriminant functions obtained allow the characterization of six different types of dietary adaptations: general grazers, fresh-grass grazers, mixed-feeders from open habitat, browsers,mixed-feeders from closed habitat, and frugivores. The predictive ability of the algorithms was tested with 1 063 specimens, most of them lacking one or more measurements. The mean predictive ability of the discriminant functions over these specimens (94 % ) is only slightly lower than over the species used to obtain them (98 % ). Given that the algorithms involve small sets of craniodental measurements, they can also be applied to non-complete specimens from archaeological assemblages. These algorithms, combined with those obtained using postcranial measurements for estimating adaptations related to locomotor performance and habitat choice, are useful for deriving inferences on the autecology of ancient bovids and may be used in paleoenvironmental reconstruction [Acta Zoologica Sinica 52 (6): 988- 1008, 2006].%利用逐步分辨分析方法(Stepwise discriminant analysis,SCDA)检测了广义牛科动物的颅齿部结构,这些结构特征可以作为采食行为生态适应特征.在本研究中,测量了72种广义牛科动物的28个颅齿部结构.逐步分辨分析方法得出了6种采食方式适应类型:一般粗食者、新鲜禾草粗食者、开阔生境混合型采食者、精食者、郁闭生境混合型采食者、食果者.用103个标本检测了分辨指标的预测能力,所用标本为缺损标本,大多数缺少一项或多项结构.从这些标本获得的分辨函数的平均预测能力为94%,比用72种广义牛科动物标本建立的分辨函数的平均预测能力(98%)低一些.从一个颅齿部结构小样本建立的分辨函数可以用于考古发掘物中不完整标本的研究.这些指标与用颅下结构测量建立的运动能力和生境选择的指标相结合,可以推断古牛科动物的个体生念学以及古环境重建[动物学报52(6):988-1008,2006].

  3. Characterizing adaptive morphological patterns related to habitat use and body mass in Bovidae (Mammalia: Artiodactyla)%牛科(哺乳纲:偶蹄目)动物与生境利用有关的适应形态模式

    Institute of Scientific and Technical Information of China (English)

    Manuel MENDOZA; Paul PALMQVIST

    2006-01-01

    A multivariate analysis of the postcranial skeleton of extant bovids reveals patterns of osteological features indicative of ecological adaptations for habitat use and body size. The morphological patterns that characterize the postcranial anatomy of bovid species from each habitat type were identified with stepwise canonical discriminant analysis and decision trees, a technique based on machine learning. The analyses were carried out using 43 measurements from 110 extant bovid species. The discriminant functions and decision trees obtained allow a perfect discrimination among bovids adapted to open plains, forests and mountainous areas (100 % of correct reclassifications obtained in all comparisons), using sets of variables measured in all major limb bones as well as combinations of variables derived exclusively from single limb elements. Given that the adjusted algorithms involve small sets of postcranial measurements, they can also be applied to noncomplete specimens preserved in archaeological and paleontological assemblages, thus being useful for estimating the locomotor performances of ancient taxa. These algorithms, indicative of ecological adaptations for habitat use, combined with those adjusted with craniodental measurements for estimating the dietary preferences of bovid species, have the potential for characterizing the paleoautecology of extinct taxa and may be used in paleoenvironmental reconstruction. We also analyze if multiple regression equations show higher predictive ability for estimating body mass than simple regression equations, and propose the best algorithms obtained from postcranial morphological variables measured in each single major limb bone [Acta Zoologica Sinica 52 (6): 971-987, 2006].%对广义牛科动物颅后骨骼的多元变量分析揭示了牛科生境利用和体型之间的骨学特征.利用逐步分辨分析方法和一个基于机器学习的决策树方法鉴别了每种生境中牛科动物颅后解剖结构的形态特征.从110个广义牛科动物测量了43个指标进行了这项分析.利用所有主要肢骨测量值和以单根肢骨测量为主的测量值获得的分辨函数和决策树可以完美地区分适应开阔生境、森林和山地的牛科动物(在所有分析中得到了100%正确的再分类).由于调整的函数仅涉及到很小的颅后骨骼测量集,这些函数可以应用于研究考古学和古生物学发掘物中保存的不完整标本.这些表征生境利用的生态适应函数与那些用颅齿部性状建立、用于推测牛科动物食物选择的函数结合,具有刻画已灭绝的分类类群的古个体生态学和重建古环境的潜力.我们还分析了多元回归是否较单一因子回归表现出较高的预测能力,并提出了从每一种单根主要肢骨测量的颅后形态变量得到的最好代数函数[动物学报52(6):971-987,2006].

  4. Hormiga argentina Linepithema humile Mayr, 1868 (Hymenoptera: Formicidae y su rol como posible vector de contaminación microbiana en una lechería de cabras Capra hircus Linnaeus, 1758 (Artiodactyla: Bovidae

    Directory of Open Access Journals (Sweden)

    J Ipinza-Regla

    2015-01-01

    Full Text Available Se trata de establecer la acción de la hormiga argentina Linepithema humile, como potencial vector mecánico de microorganismos patógenos. Desde un plantel lechero de cabras ubicado en la comuna de Lampa, Región Metropolitana, Chile, se obtuvieron 63 muestras: 21 muestras Control A aspiradas directamente sobre el papel filtro esterilizado previo al paso de las hormigas, 21 muestras de hormigas aspiradas desde papel filtro y 21 muestras posterior al paso de las hormigas (Control B. La metodología incluyó siembras en medios de cultivos nutritivos, selectivos y diferenciales. Posteriormente y según el microorganismo a seguir se continuó con algunas pruebas bioquímicas específicas correspondientes a cada caso. En el presente estudio se decidió investigar la presencia de seis agentes patógenos importantes por su frecuencia en caso de infección en humanos: Staphylococcus aureus, Salmonella spp., Pseudomona aeruginosa, Escherichia coli, Listeria monocytogenes y Campylobacter jejuni. En los resultados de este estudio se detectaron cuatro potenciales patógenos: S. aureus, Salmonella spp., P. aeruginosa y E. coli. Además se encontraron otros agentes microbianos: Streptococcus spp., Micrococcus spp., Escherichia vulneris, Hafnia alvei, Serratia marcencens biog.1, Ewingella americana, Providencia rettgeri, Bacillus spp., Enterobacter aglomerans, Stomatococcus spp., Morganella morganii. Las muestras Control A resultaron negativas. Las muestras de hormigas fueron positivos en 95,23%, en cambio, las muestras controles B presentaron desarrollo bacteriano en 90,47% de los casos, siendo ambos estadísticamente mayores al control A (P < 0,05. Se logró confirmar que L. humile es capaz de transportar agentes microbianos en una lechería de cabras.

  5. Aplicación del análisis 3D de elementos finitos en el estudio biomecánico de la dentición de mamíferos. Análisis preliminar en Procervulus ginsburgi (Cervidae, Artiodactyla

    Directory of Open Access Journals (Sweden)

    Morales, J.

    2006-12-01

    Full Text Available The combination of complex structures and diverse materials, restricts our knowledge of the biomechanics of teeth. In this sense, finite element analysis (FEA is a method used in engineering and biomechanical studies to estimate the performance and changes produced by regimes of stress and strain in mechanic structures or the human skeleton, as well as in soft tissues. On only rare occasions it is applied to the problem of biomechanical design in animals and even less in fossil groups. In this work, we advance the preliminary results obtained on creating a complete complex 3D finite element model of the tooth of an extinct deer in order to test its functionality and mechanical properties.La combinación de las complejas estructuras y de los diversos materiales que integran los dientes, restringe nuestro conocimiento acerca de su biomecánica. En este sentido, el análisis de elementos finitos (AEF es un método utilizado en ingeniería y en estudios biomecánicos para estimar el rendimiento y las variaciones producidas por las tensiones y las deformaciones en estructuras mecánicas o del esqueleto humano, así como en tejidos blandos. En contadas ocasiones se ha aplicado este método al problema de diseño biomecánico de animales y aún menos en grupos fósiles. En este trabajo presentamos los resultados preliminares obtenidos al generar un completo y complejo modelo en 3D de elementos finitos del molar superior de un ciervo extinto para estudiar su funcionalidad y propiedades mecánicas.

  6. Palaeomerycidae (Artiodactyla, Mammalia de La Barranca (Zaragoza, España y La Grive-Saint-Alban (Isère, Francia. Palaeomerycidae y cambios climáticos durante el Aragoniense en la Península Ibérica

    Directory of Open Access Journals (Sweden)

    Morales, J.

    2006-12-01

    Full Text Available We describe a sample of cranial appendages and isolated dentition of the Palaeomerycids ruminants from the Upper Aragonian localities of La Barranca (Zaragoza, Spain and La Grive-Saint-Alban (Isère, France. The most characteristic fossils are two frontal protuberances which are morphologically close to those of Ampelomeryx ginsburgi although differing on the orientation of the ossicone apex. The dentition is comparable in size and morphology to that of Ampelomeryx magnus from Sansan (France. During the Aragonian in the Central Iberian Basins three different and successive Palaemerycids assemblages are recognized. This succession could be correlated with the paleoclimatic pattern observed in the same area.Se describen restos fósiles correspondientes a rumiantes de la familia Palaeomerycidae de los yacimientos del Aragoniense superior de La Barranca (Zaragoza, España y de La Grive-Saint-Alban (Isère, Francia. Las piezas más notables son sendos osiconos frontales, que presentan una morfología parecida a la de Ampelomeryx ginsburgi, difiriendo en la distinta orientación de la región apical. La dentición es similar morfológica y biométricamente a la de Ampelomeryx magnus del yacimiento Aragoniense superior de Sansan (Francia. En este trabajo se apunta la hipótesis de la existencia en las cuencas centrales de la Península Ibérica de tres conjuntos diferenciados de Palaeomerycidae, cuya sucesión se relaciona con la evolución paleoclimática que sufrió dicha área geográfica durante el Aragoniense.

  7. Efficient production of foot-and-mouth disease virus empty capsids in insect cells following down regulation of 3C protease activity

    DEFF Research Database (Denmark)

    Porta, Claudine; Xu, Xiaodong; Loureiro, Silvia;

    2013-01-01

    Foot-and-mouth disease virus (FMDV) is a significant economically and distributed globally pathogen of Artiodactyla. Current vaccines are chemically inactivated whole virus particles that require large-scale virus growth in strict bio-containment with the associated risks of accidental release...

  8. PALEOZOOLOGY

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    20151109Deng Tao(Key Laboratory of Vertebrate Evolution and Human Origins,Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing100044,China);Lu Xiaokang A New Species of Crown-Antlered Deer Stephanocemas(Cervidae,Artiodactyla)from the Middle

  9. Molecular cloning and phylogenetic analysis of integrins alpha v beta 1 and alpha v beta 6 of one-humped camel (Camelus dromedarius)

    DEFF Research Database (Denmark)

    Du, Junzheng; Larska, Magdalena Larska; Chang, Huiyun;

    2010-01-01

    into the Artiodactyla group, together with those of Bactrian camel, pig, sheep, and cattle that are susceptible to FMDV infection. Compared with the Bactrian camel integrins, 4, 10, and 8 amino acid changes were found in the dromedary camel alpha v, beta 1, and beta 6 subunits, respectively. This study...

  10. Muflón – Ovis orientalis Gmelin, 1774

    OpenAIRE

    Cassinello, Jorge; Nyman, M.; Salvador Milla, Alfredo

    2012-01-01

    Mamíferos - Orden Artiodactyla - Familia Bovidae en la Enciclopedia Virtual de Vertebrados Españoles, http://www.vertebradosibericos.org/. Versiones anteriores: 11-11-2003; 26-01-2005; 5-06-2008; 26-08-2008

  11. Genetic resources, genome mapping and evolutionary genomics of the pig (Sus scrofa)

    NARCIS (Netherlands)

    Chen, K.; Baxter, T.; Muir, W.M.; Groenen, M.A.M.; Schook, L.B.

    2007-01-01

    The pig, a representative of the artiodactyla clade, is one of the first animals domesticated, and has become an important agriculture animal as one of the major human nutritional sources of animal based protein. The pig is also a valuable biomedical model organism for human health. The pig's import

  12. 乌骨羊肉营养成分分析%Analysis of the Nutritional Components of Black-Bone Sheep Meat

    Institute of Scientific and Technical Information of China (English)

    常新耀; 谢红兵; 赵坤; 魏刚才

    2009-01-01

    @@ 乌骨羊(Black-Bone Sheep)属于哺乳纲(Mammalia)、偶蹄目(Artiodactyla)、反刍亚目(Ruminantia)、洞角科(Bovidae)的绵羊山羊亚科(Caprovinae)的绵羊属(Dvis),原产于云南省兰坪县,是世界上绝无仅有的地方珍稀物种资源.

  13. Biodiversity of multiple Pregnancy-Associated Glycoprotein (PAG) family: gene cloning and chorionic protein purification in domestic and wild eutherians (Placentalia) - a review

    OpenAIRE

    Szafranska, Bozena; Panasiewicz, Grzegorz; Majewska, Marta

    2006-01-01

    International audience; This review presents a broad overview of chorionic glycoproteins encoded by the Pregnancy-Associated Glycoprotein (PAG) gene family and also serves to illustrate how the recent discovery of the PAG family has contributed to our general knowledge of genome evolution, placental transcription and placental protein expression. The complex and large PAG family is restricted to the Artiodactyla order, although single PAG-like genes have also been identified in species outsid...

  14. Genetic Resources, Genome Mapping and Evolutionary Genomics of the Pig (Sus scrofa)

    OpenAIRE

    Chen, K.; Baxter, T.; Muir, W. M.; Groenen, M.A.M.; Schook, L B

    2007-01-01

    The pig, a representative of the artiodactyla clade, is one of the first animals domesticated, and has become an important agriculture animal as one of the major human nutritional sources of animal based protein. The pig is also a valuable biomedical model organism for human health. The pig's importance to human health and nutrition is reflected in the decision to sequence its genome (3X). As an animal species with its wild ancestors present in the world, the pig provides a unique opportunity...

  15. Tooele Army Depot Revised Final Site-Wide Ecological Risk Assessment. Volume I.

    Science.gov (United States)

    1998-02-01

    Cerridae Deer Cervus canadensis Elk 2 Odocoileus hemionus Mule deer X 1 Order: Carnivora Carnivores Family: Canidae Wolves, Foxes, and the Coyote...NA NA Y Cat Mammalia Carnivora Felidae Felis domesticus N Cow Mammalia Artiodactyla Bovidae Bos taurus N Dog Mammalia Carnivore Canidae Canis...fauna Invertebrata Varies Varies No NA Plants Plantae NA NA Yes (Ute ladies’ tresses, Clay phacelia) Yes ♦ This receptor is a Special Status

  16. Taxonomy Icon Data: okapi [Taxonomy Icon

    Lifescience Database Archive (English)

    Full Text Available okapi Okapia johnstoni Chordata/Vertebrata/Mammalia/Theria/Eutheria/Artiodactyla Okapia_john...stoni_L.png Okapia_johnstoni_NL.png Okapia_johnstoni_S.png Okapia_johnstoni_NS.png http://bioscienc...edbc.jp/taxonomy_icon/icon.cgi?i=Okapia+johnstoni&t=L http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Okapia+john...stoni&t=NL http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Okapia+johnston...i&t=S http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Okapia+johnstoni&t=NS ...

  17. Taxonomy Icon Data: pronghorn [Taxonomy Icon

    Lifescience Database Archive (English)

    Full Text Available pronghorn Antilocapra americana Chordata/Vertebrata/Mammalia/Theria/Eutheria/Artiodactyla Antilocapra..._americana_L.png Antilocapra_americana_NL.png Antilocapra_americana_S.png Antilocapra_amer...icana_NS.png http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Antilocapra+americana&t=L http://biosciencedbc....jp/taxonomy_icon/icon.cgi?i=Antilocapra+americana&t=NL http://biosciencedbc.jp/t...axonomy_icon/icon.cgi?i=Antilocapra+americana&t=S http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Antilocapra+americana&t=NS ...

  18. Taxonomy Icon Data: pig [Taxonomy Icon

    Lifescience Database Archive (English)

    Full Text Available pig Sus scrofa domestica Chordata/Vertebrata/Mammalia/Theria/Eutheria/Artiodactyla Sus_scrofa_domestic...a_L.png Sus_scrofa_domestica_NL.png Sus_scrofa_domestica_S.png Sus_scrofa_domestica_NS.pn...g http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Sus+scrofa+domestica&t=L http://biosciencedbc.jp/taxonomy..._icon/icon.cgi?i=Sus+scrofa+domestica&t=NL http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Sus+scrofa+dom...estica&t=S http://biosciencedbc.jp/taxonomy_icon/icon.cgi?i=Sus+scrofa+domestica&t=

  19. Fetal and early post-natal mineralization of the tympanic bulla in fin whales may reveal a Hitherto undiscovered evolutionary trait.

    Directory of Open Access Journals (Sweden)

    Bruno Cozzi

    Full Text Available The evolution of the cetacean skeleton followed a path that differentiated this group from other terrestrial mammals about 50 million years ago [1], and debate is still going on about the relationships between Cetacea and Artiodactyla [2], [3], [4]. Some skeletal traits of the basilosaurids (the more advanced forms of Archaeocetes, such as the expansion of the peribullary air sinuses, dental modification and vertebral size uniformity [5] are maintained and further emphasized also in contemporary odontocetes and mysticetes. Using Dual-Energy X-Ray Absorptiometry here we report that the deposition of bone mineral in fetal and newborn specimens of the fin whale Balaenoptera physalus is remarkably higher in the bulla tympanica than in the adjacent basal skull or in the rest of the skeleton. Ossification of the tympanic bulla in fetal Artiodactyla (bovine, hippopotamus is minimal, becomes sensible after birth and then progresses during growth, contrarily to the precocious mineralization that we observed in fin whales. Given the importance of the ear bones for the precise identification of phylogenetic relationship in therian evolution [6], this feature may indicate a specific evolutionary trait of fin whales and possibly other cetacean species or families. Early mineralization of the tympanic bulla allows immediate sound conduction in the aquatic medium and consequently holds potential importance for mother-calf relationship and postnatal survival.

  20. Mitogenomic analyses provide new insights into cetacean origin and evolution.

    Science.gov (United States)

    Arnason, Ulfur; Gullberg, Anette; Janke, Axel

    2004-05-26

    The evolution of the order Cetacea (whales, dolphins, porpoises) has, for a long time, attracted the attention of evolutionary biologists. Here we examine cetacean phylogenetic relationships on the basis of analyses of complete mitochondrial genomes that represent all extant cetacean families. The results suggest that the ancestors of recent cetaceans had an explosive evolutionary radiation 30-35 million years before present. During this period, extant cetaceans divided into the two primary groups, Mysticeti (baleen whales) and Odontoceti (toothed whales). Soon after this basal split, the Odontoceti diverged into the four extant lineages, sperm whales, beaked whales, Indian river dolphins and delphinoids (iniid river dolphins, narwhals/belugas, porpoises and true dolphins). The current data set has allowed test of two recent morphological hypotheses on cetacean origin. One of these hypotheses posits that Artiodactyla and Cetacea originated from the extinct group Mesonychia, and the other that Mesonychia/Cetacea constitutes a sister group to Artiodactyla. The current results are inconsistent with both these hypotheses. The findings suggest that the claimed morphological similarities between Mesonychia and Cetacea are the result of evolutionary convergence rather than common ancestry.

  1. A higher-level MRP supertree of placental mammals

    Directory of Open Access Journals (Sweden)

    Bininda-Emonds Olaf RP

    2006-11-01

    Full Text Available Abstract Background The higher-level phylogeny of placental mammals has long been a phylogenetic Gordian knot, with disagreement about both the precise contents of, and relationships between, the extant orders. A recent MRP supertree that favoured 'outdated' hypotheses (notably, monophyly of both Artiodactyla and Lipotyphla has been heavily criticised for including low-quality and redundant data. We apply a stringent data selection protocol designed to minimise these problems to a much-expanded data set of morphological, molecular and combined source trees, to produce a supertree that includes every family of extant placental mammals. Results The supertree is well-resolved and supports both polyphyly of Lipotyphla and paraphyly of Artiodactyla with respect to Cetacea. The existence of four 'superorders' – Afrotheria, Xenarthra, Laurasiatheria and Euarchontoglires – is also supported. The topology is highly congruent with recent (molecular phylogenetic analyses of placental mammals, but is considerably more comprehensive, being the first phylogeny to include all 113 extant families without making a priori assumptions of suprafamilial monophyly. Subsidiary analyses reveal that the data selection protocol played a key role in the major changes relative to a previously published higher-level supertree of placentals. Conclusion The supertree should provide a useful framework for hypothesis testing in phylogenetic comparative biology, and supports the idea that biogeography has played a crucial role in the evolution of placental mammals. Our results demonstrate the importance of minimising poor and redundant data when constructing supertrees.

  2. Biodiversity of multiple Pregnancy-Associated Glycoprotein (PAG) family: gene cloning and chorionic protein purification in domestic and wild eutherians (Placentalia)--a review.

    Science.gov (United States)

    Szafranska, Bozena; Panasiewicz, Grzegorz; Majewska, Marta

    2006-01-01

    This review presents a broad overview of chorionic glycoproteins encoded by the Pregnancy-Associated Glycoprotein (PAG) gene family and also serves to illustrate how the recent discovery of the PAG family has contributed to our general knowledge of genome evolution, placental transcription and placental protein expression. The complex and large PAG family is restricted to the Artiodactyla order, although single PAG-like genes have also been identified in species outside the Artiodactyla. The PAGs are members of the aspartic proteinase (AP) superfamily. Unexpectedly, however, some members of the PAG family possess amino acid substitutions within and around the active site that likely render them unable to act as proteinases. This paper summarises the available information regarding biodiversity of PAG gene expression based on cDNA cloning, mRNA localisation studies and the structural organisation of the PAG genes with a particular emphasis on PAG promoters. It also compares available data regarding PAG protein purifications, sequencing and their N-glycodiversity. Finally, it discusses the scientific relevance, possible functional roles of the PAGs and describes possible profitable applications related to the detection of PAG proteins in the blood of pregnant domestic and wild species.

  3. Species identification key of Korean mammal hair.

    Science.gov (United States)

    Lee, Eunok; Choi, Tae-Young; Woo, Donggul; Min, Mi-Sook; Sugita, Shoei; Lee, Hang

    2014-05-01

    The hair microstructures of Korean terrestrial mammals from 23 species (22 wild and one domestic) were analyzed using light and scanning electron microscopy (SEM) to construct a hair identification key. The hairs were examined using the medulla structures and cuticular scales of guard hairs from the dorsal regions of mature adult animals. All cuticular scale structures in the hair of Rodentia, Lagomorpha, Carnivora and Insectivora showed the petal pattern, and those of Artiodactyla and Chiroptera showed the wave pattern and coronal pattern, respectively. Rodentia, Lagomorpha and Carnivora showed multicellular, and Insectivora and Artiodactyla showed unicellular regular, mesh or columnar in the medulla structures, respectively. Chiroptera did not show the medulla structures in their hair. We found that it is possible to distinguish between species and order based on general appearance, medulla structures and cuticular scales. Thus, we constructed a hair identification key with morphological characteristics from each species. This study suggests that hair identification keys could be useful in fields, such as forensic science, food safety and foraging ecology.

  4. Fetal and early post-natal mineralization of the tympanic bulla in fin whales may reveal a Hitherto undiscovered evolutionary trait.

    Science.gov (United States)

    Cozzi, Bruno; Podestà, Michela; Mazzariol, Sandro; Zotti, Alessandro

    2012-01-01

    The evolution of the cetacean skeleton followed a path that differentiated this group from other terrestrial mammals about 50 million years ago [1], and debate is still going on about the relationships between Cetacea and Artiodactyla [2], [3], [4]. Some skeletal traits of the basilosaurids (the more advanced forms of Archaeocetes), such as the expansion of the peribullary air sinuses, dental modification and vertebral size uniformity [5] are maintained and further emphasized also in contemporary odontocetes and mysticetes. Using Dual-Energy X-Ray Absorptiometry here we report that the deposition of bone mineral in fetal and newborn specimens of the fin whale Balaenoptera physalus is remarkably higher in the bulla tympanica than in the adjacent basal skull or in the rest of the skeleton. Ossification of the tympanic bulla in fetal Artiodactyla (bovine, hippopotamus) is minimal, becomes sensible after birth and then progresses during growth, contrarily to the precocious mineralization that we observed in fin whales. Given the importance of the ear bones for the precise identification of phylogenetic relationship in therian evolution [6], this feature may indicate a specific evolutionary trait of fin whales and possibly other cetacean species or families. Early mineralization of the tympanic bulla allows immediate sound conduction in the aquatic medium and consequently holds potential importance for mother-calf relationship and postnatal survival.

  5. Placentation in dolphins from the Amazon River Basin: the Boto, Inia geoffrensis, and the Tucuxi, Sotalia fluviatilis.

    Science.gov (United States)

    da Silva, Vera M F; Carter, Anthony M; Ambrosio, Carlos E; Carvalho, Ana F; Bonatelli, Marina; Lima, Marcelo C; Miglino, Maria Angelica

    2007-06-28

    A recent reassessment of the phylogenetic affinities of cetaceans makes it timely to compare their placentation with that of the artiodactyls. We studied the placentae of two sympatric species of dolphin from the Amazon River Basin, representing two distinct families. The umbilical cord branched to supply a bilobed allantoic sac. Small blood vessels and smooth muscle bundles were found within the stroma of the cord. Foci of squamous metaplasia occurred in the allanto-amnion and allantochorion. The interhemal membrane of the placenta was of the epitheliochorial type. Two different types of trophoblastic epithelium were seen. Most was of the simple columnar type and indented by fetal capillaries. However, there were also areolar regions with tall columnar trophoblast and these were more sparsely supplied with capillaries. The endometrium was well vascularised and richly supplied with actively secreting glands. These findings are consistent with the current view that Cetacea are nested within Artiodactyla as sister group to the hippopotamids.

  6. Placentation in dolphins from the Amazon River Basin: the Boto, Inia geoffrensis, and the Tucuxi, Sotalia fluviatilis

    Directory of Open Access Journals (Sweden)

    Bonatelli Marina

    2007-06-01

    Full Text Available Abstract A recent reassessment of the phylogenetic affinities of cetaceans makes it timely to compare their placentation with that of the artiodactyls. We studied the placentae of two sympatric species of dolphin from the Amazon River Basin, representing two distinct families. The umbilical cord branched to supply a bilobed allantoic sac. Small blood vessels and smooth muscle bundles were found within the stroma of the cord. Foci of squamous metaplasia occurred in the allanto-amnion and allantochorion. The interhemal membrane of the placenta was of the epitheliochorial type. Two different types of trophoblastic epithelium were seen. Most was of the simple columnar type and indented by fetal capillaries. However, there were also areolar regions with tall columnar trophoblast and these were more sparsely supplied with capillaries. The endometrium was well vascularised and richly supplied with actively secreting glands. These findings are consistent with the current view that Cetacea are nested within Artiodactyla as sister group to the hippopotamids.

  7. Report on Mammalian Fossils of Chinji Formation, Dhulian, Pakistan

    Directory of Open Access Journals (Sweden)

    Muhammad A. Khan

    2005-01-01

    Full Text Available Twenty mammalian fossil specimens of varying preservational state are described from the Chinji Formation of Dhulian, Pakistan. The remains described in this study are all teeth and represent the Proboscidea, Perissodactyla and Artiodactyla. All the dental specimens are new variants recorded here for the first time. Pliotriplopus dhulianensis is new to science having small size and absence of crista than Pliotriplopus chinjiensis. These findings extend the geographic distribution of this dentally highly derived Triplopinae, which was previously restricted to a single species, Pliotriplopus chinjiensis. Additional fossils of the three mammalian orders are necessary to shed new light on the phylogenetic relationships within the first representatives of the orders in Eurasia. A very important, deciduous tooth of the species Stegolophodon cautleyi hitherto unknown is described in this report.

  8. A Checklist of the Mammals of small Italian islands

    Directory of Open Access Journals (Sweden)

    Francesco Angelici

    2009-11-01

    Full Text Available Abstract Present knowledge on mammals of small Italian islands consists mainly of episodic records. In this paper we collect all available information about the distribution of wild mammals on 47 small Italian islands. A total of 37-38 species was found, including: 1 Erinaceomorpha, 4 Soricomorpha, 16-17 Chiroptera, 3 Lagomorpha, 7 Rodentia, 2 Carnivora and 4 Artiodactyla. The subspecific level has been identified whenever possible. The mammal fauna of the Isle of Elba (Tuscan Archipelago is the richest, with 24 species, while the most common species are Rattus rattus present on 47 islands Oryctolagus cuniculus (34, and Mus musculus (33. With the exception of Crocidura sicula, the current mammal fauna on small Italian islands originated from introductions.
    Riassunto Checklist dei mammiferi delle piccole isole italiane Lo stato attuale delle conoscenze sui mammiferi delle piccole isole del territorio italiano è frutto, perlopiù, di segnalazioni episodiche. Abbiamo raccolto le informazioni disponibili riguardo i mammiferi selvatici. Sono state prese in esame 47 isole, sulle quali è stata segnalata la presenza di un totale di 37-38 specie così ripartite: 1 Erinaceomorpha, 4 Soricomorpha, 16-17 Chiroptera, 3 Lagomorpha, 7 Rodentia, 2 Carnivora e 4 Artiodactyla. Quando possibile è stato identificato anche il livello subspecifico. In base ai dati finora disponibili, la teriofauna dell’Isola d’Elba (Arcipelago Toscano risulta quella più diversificata (24 specie, mentre le specie più diffuse sono Rattus rattus, presente su 47 isole, Oryctolagus cuniculus (34 e Mus musculus (33. Con l’eccezione di Crocidura sicula, i popolamenti attuali di mammiferi selvatici nelle piccole isole italiane sono originati da introduzioni operate dall’uomo.

  9. Investigation of the protein osteocalcin of Camelops hesternus: Sequence, structure and phylogenetic implications

    Science.gov (United States)

    Humpula, James F.; Ostrom, Peggy H.; Gandhi, Hasand; Strahler, John R.; Walker, Angela K.; Stafford, Thomas W.; Smith, James J.; Voorhies, Michael R.; George Corner, R.; Andrews, Phillip C.

    2007-12-01

    Ancient DNA sequences offer an extraordinary opportunity to unravel the evolutionary history of ancient organisms. Protein sequences offer another reservoir of genetic information that has recently become tractable through the application of mass spectrometric techniques. The extent to which ancient protein sequences resolve phylogenetic relationships, however, has not been explored. We determined the osteocalcin amino acid sequence from the bone of an extinct Camelid (21 ka, Camelops hesternus) excavated from Isleta Cave, New Mexico and three bones of extant camelids: bactrian camel ( Camelus bactrianus); dromedary camel ( Camelus dromedarius) and guanaco ( Llama guanacoe) for a diagenetic and phylogenetic assessment. There was no difference in sequence among the four taxa. Structural attributes observed in both modern and ancient osteocalcin include a post-translation modification, Hyp 9, deamidation of Gln 35 and Gln 39, and oxidation of Met 36. Carbamylation of the N-terminus in ancient osteocalcin may result in blockage and explain previous difficulties in sequencing ancient proteins via Edman degradation. A phylogenetic analysis using osteocalcin sequences of 25 vertebrate taxa was conducted to explore osteocalcin protein evolution and the utility of osteocalcin sequences for delineating phylogenetic relationships. The maximum likelihood tree closely reflected generally recognized taxonomic relationships. For example, maximum likelihood analysis recovered rodents, birds and, within hominins, the Homo-Pan-Gorilla trichotomy. Within Artiodactyla, character state analysis showed that a substitution of Pro 4 for His 4 defines the Capra-Ovis clade within Artiodactyla. Homoplasy in our analysis indicated that osteocalcin evolution is not a perfect indicator of species evolution. Limited sequence availability prevented assigning functional significance to sequence changes. Our preliminary analysis of osteocalcin evolution represents an initial step towards a

  10. CACERÍA DE SUBSISTENCIA DE MAMÍFEROS EN EL SECTOR ORIENTAL DE LA RESERVA DE BIÓSFERA EL TUPARRO – VICHADA

    Directory of Open Access Journals (Sweden)

    Mónica del Pilar Martínez Salas

    2015-11-01

    Full Text Available RESUMENLa cacería de subsistencia ha sido una actividad de vital importancia para las comunidades indígenas como fuente de proteína y venta. Se caracterizó la cacería de subsistencia realizada por comunidades de las etnias Piaroa y Curripaco presentes en la Reserva de Biosfera el Tuparro, por medio de registros de caza durante nueve meses de estudio. Se encontró que no hay diferencias significativas en cuanto a especies y número de individuos cazados entre las dos etnias, siendo Artiodactyla y Rodentia los órdenes con mayor aporte respecto al número de individuos, biomasa y riqueza de especies, lo cual fue similar a otros estudios realizados en el Neotrópico. Los Piaroa cazan más frecuentemente cuando los estudiantes llegan de la ciudad al resguardo, mientras que los Curripaco lo hacen para las reuniones evangélicas. El arte de caza más usado por las comunidades de las dos etnias fue la escopeta. Las etnias estudiadas tienen sus zonas de caza en la Reserva de Biósfera El Tuparro, y en ellas, los Curripaco están aprovechando directamente los recursos de su zona núcleo del Parque Nacional Natural El Tuparro.ABSTRACTSubsistence hunting has been an activity of vital importance to indigenous communities as a source of protein and sale. We characterized subsistence hunting by Curripaco and Piaroa ethnic groups present in the Tuparro Biosphere Reserve, through hunting records over nine months of study. We found no significant differences in species and number of individuals hunted by the two ethnic groups. The orders Rodentia and Artiodactyla contributed the most in terms of number of individuals, biomass and species richness, which was similar to studies to the Neotropics. The Piaroa hunt more frequently when students return to the community lands from the city, while the Curripaco do so for religious gatherings. The hunting method used most often by both ethnic groups was the shotgun. The hunting areas used by ethnic groups are within

  11. An explanation of the relationship between mass, metabolic rate and characteristic length for placental mammals

    Directory of Open Access Journals (Sweden)

    Charles C. Frasier

    2015-09-01

    Full Text Available The Mass, Metabolism and Length Explanation (MMLE was advanced in 1984 to explain the relationship between metabolic rate and body mass for birds and mammals. This paper reports on a modernized version of MMLE. MMLE deterministically computes the absolute value of Basal Metabolic Rate (BMR and body mass for individual animals. MMLE is thus distinct from other examinations of these topics that use species-averaged data to estimate the parameters in a statistically best fit power law relationship such as BMR = a(bodymassb. Beginning with the proposition that BMR is proportional to the number of mitochondria in an animal, two primary equations are derived that compute BMR and body mass as functions of an individual animal’s characteristic length and sturdiness factor. The characteristic length is a measureable skeletal length associated with an animal’s means of propulsion. The sturdiness factor expresses how sturdy or gracile an animal is. Eight other parameters occur in the equations that vary little among animals in the same phylogenetic group. The present paper modernizes MMLE by explicitly treating Froude and Strouhal dynamic similarity of mammals’ skeletal musculature, revising the treatment of BMR and using new data to estimate numerical values for the parameters that occur in the equations. A mass and length data set with 575 entries from the orders Rodentia, Chiroptera, Artiodactyla, Carnivora, Perissodactyla and Proboscidea is used. A BMR and mass data set with 436 entries from the orders Rodentia, Chiroptera, Artiodactyla and Carnivora is also used. With the estimated parameter values MMLE can calculate characteristic length and sturdiness factor values so that every BMR and mass datum from the BMR and mass data set can be computed exactly. Furthermore MMLE can calculate characteristic length and sturdiness factor values so that every body mass and length datum from the mass and length data set can be computed exactly. Whether or

  12. An explanation of the relationship between mass, metabolic rate and characteristic length for placental mammals

    Science.gov (United States)

    2015-01-01

    The Mass, Metabolism and Length Explanation (MMLE) was advanced in 1984 to explain the relationship between metabolic rate and body mass for birds and mammals. This paper reports on a modernized version of MMLE. MMLE deterministically computes the absolute value of Basal Metabolic Rate (BMR) and body mass for individual animals. MMLE is thus distinct from other examinations of these topics that use species-averaged data to estimate the parameters in a statistically best fit power law relationship such as BMR = a(bodymass)b. Beginning with the proposition that BMR is proportional to the number of mitochondria in an animal, two primary equations are derived that compute BMR and body mass as functions of an individual animal’s characteristic length and sturdiness factor. The characteristic length is a measureable skeletal length associated with an animal’s means of propulsion. The sturdiness factor expresses how sturdy or gracile an animal is. Eight other parameters occur in the equations that vary little among animals in the same phylogenetic group. The present paper modernizes MMLE by explicitly treating Froude and Strouhal dynamic similarity of mammals’ skeletal musculature, revising the treatment of BMR and using new data to estimate numerical values for the parameters that occur in the equations. A mass and length data set with 575 entries from the orders Rodentia, Chiroptera, Artiodactyla, Carnivora, Perissodactyla and Proboscidea is used. A BMR and mass data set with 436 entries from the orders Rodentia, Chiroptera, Artiodactyla and Carnivora is also used. With the estimated parameter values MMLE can calculate characteristic length and sturdiness factor values so that every BMR and mass datum from the BMR and mass data set can be computed exactly. Furthermore MMLE can calculate characteristic length and sturdiness factor values so that every body mass and length datum from the mass and length data set can be computed exactly. Whether or not MMLE can

  13. Late and middle Pleistocene ungulates dietary diversity in Western Europe indicate variations of Neanderthal paleoenvironments through time and space

    Science.gov (United States)

    Rivals, Florent; Schulz, Ellen; Kaiser, Thomas M.

    2009-12-01

    Mesowear and microwear on enamel from 763 teeth of middle and late Pleistocene ungulates were analysed to infer the potential of dental wear analysis of faunal remains as a paleoenvironmental and paleoclimatic proxy in relation to climatic changes and diversity of vegetation available in the environment. Fossil localities including levels belonging to two glacial and two interglacial stages were selected in Germany, France, and Spain. At a temporal scale, results indicate that the dietary diversity in ungulates is higher during interglacial phases (MIS 5 and 3) than during pleniglacial phases (MIS 8 and 4). Dietary diversity is concluded to be related to climate-driven vegetation changes which during interglacials lead to increased variety of potential food items available to ungulates. At the geographical scale, during interglacials, changes in diet composition are evident along geographical gradients. The corresponding dietary gradients are proposed to be related to climate and vegetation gradients reflecting more arid climates in the Mediterranean area compared to North-Western Europe. Species consistently represented at all localities investigated are Cervus elaphus (Cervidae, Artiodactyla) and Equus ferus (Equidae, Perissodactyla). C. elaphus populations are found to consistently have less abrasive diets than E. ferus populations but dietary traits of both species varied largely, revealing a significant plasticity in the feeding adaptation of both species. Those traits are concluded to be related to differences in vegetation structure at each locality and complement the evidence that ungulates have broader dietary habits than what is usually assumed.

  14. Larger brain size indirectly increases vulnerability to extinction in mammals.

    Science.gov (United States)

    Gonzalez-Voyer, Alejandro; González-Suárez, Manuela; Vilà, Carles; Revilla, Eloy

    2016-06-01

    Although previous studies have addressed the question of why large brains evolved, we have limited understanding of potential beneficial or detrimental effects of enlarged brain size in the face of current threats. Using novel phylogenetic path analysis, we evaluated how brain size directly and indirectly, via its effects on life history and ecology, influences vulnerability to extinction across 474 mammalian species. We found that larger brains, controlling for body size, indirectly increase vulnerability to extinction by extending the gestation period, increasing weaning age, and limiting litter sizes. However, we found no evidence of direct, beneficial, or detrimental effects of brain size on vulnerability to extinction, even when we explicitly considered the different types of threats that lead to vulnerability. Order-specific analyses revealed qualitatively similar patterns for Carnivora and Artiodactyla. Interestingly, for Primates, we found that larger brain size was directly (and indirectly) associated with increased vulnerability to extinction. Our results indicate that under current conditions, the constraints on life history imposed by large brains outweigh the potential benefits, undermining the resilience of the studied mammals. Contrary to the selective forces that have favored increased brain size throughout evolutionary history, at present, larger brains have become a burden for mammals.

  15. Macroscopic and microscopic aspects of collared peccary and white-lipped peccary placenta.

    Science.gov (United States)

    Santos, T C; Dantzer, V; Jones, C J P; Oliveira, M F; Miglino, M A

    2006-01-01

    This study examines middle and late gestational placentae from 13 Tayassu tajacu (collared peccary) and 3 Tayassu pecari (white-lipped peccary), which are Artiodactyla belonging to the Family Tayassuidae. The chorionic sac of Tayassu species is diffuse and chorioallantoic. These epitheliochorial placentae show no trophoblast invasion into the uterine epithelium and there is interdigitation between fetal and maternal microvilli. Two distinct regions of the fetomaternal interface can be identified: the interareolar and the areolar regions. The uterine epithelium has eosinophilic cytoplasm with dispersed, basophilic and electron-dense granules. Trophoblast cells are irregularly cuboidal on top of the fetal ridges and columnar on troughs, where cells have cytoplasmic vesicles and large basal vacuoles, surrounded by whorls of smooth membranes. Capillaries indent the trophoblast cells forming a placental barrier 3 microm or less thick. The columnar uterine glandular epithelium has a subpopulation of granules staining with Perl's Prussian blue reaction, suggesting iron secretion. In areolar areas, the trophoblast cells show apical microvilli, a basophilic cytoplasm with electron-dense intracellular vacuoles and cisternae. The placenta can therefore be classified as non-deciduate. The ultrastructural aspects of this study reveal features that have not previously been described and extend our knowledge of functions relating to materno-fetal transport in these species.

  16. Modular evolution of the Cetacean vertebral column.

    Science.gov (United States)

    Buchholtz, Emily A

    2007-01-01

    Modular theory predicts that hierarchical developmental processes generate hierarchical phenotypic units that are capable of independent modification. The vertebral column is an overtly modular structure, and its rapid phenotypic transformation in cetacean evolution provides a case study for modularity. Terrestrial mammals have five morphologically discrete vertebral series that are now known to be coincident with Hox gene expression patterns. Here, I present the hypothesis that in living Carnivora and Artiodactyla, and by inference in the terrestrial ancestors of whales, the series are themselves components of larger precaudal and caudal modular units. Column morphology in a series of fossil and living whales is used to predict the type and sequence of developmental changes responsible for modification of that ancestral pattern. Developmental innovations inferred include independent meristic additions to the precaudal column in basal archaeocetes and basilosaurids, stepwise homeotic reduction of the sacral series in protocetids, and dissociation of the caudal series into anterior tail and fluke subunits in basilosaurids. The most dramatic change was the novel association of lumbar and anterior caudal vertebrae in a module that crosses the precaudal/caudal boundary. This large unit is defined by shared patterns of vertebral morphology, count, and size in all living whales (Neoceti).

  17. Modular organizations of novel cetacean papillomaviruses.

    Science.gov (United States)

    Gottschling, Marc; Bravo, Ignacio G; Schulz, Eric; Bracho, Maria A; Deaville, Rob; Jepson, Paul D; Van Bressem, Marie-Françoise; Stockfleth, Eggert; Nindl, Ingo

    2011-04-01

    The phylogenetic position of cetacean papillomaviruses (PVs: Omikron-PVs and Upsilon-PVs) varies depending on the region of the genome analysed. They cluster together with Alpha-PVs when analysing early genes and with Xi-PVs and Phi-PVs when analysing late genes. We cloned and sequenced the complete genomes of five novel PVs, sampled from genital and oesophageal lesions of free-ranging cetaceans: Delphinus delphis (DdPV1), Lagenorhynchus acutus (TtPV3 variant), and Phocoena phocoena (PphPV1, PphPV2, and PphPV3). Using Maximum Likelihood and Bayesian approaches, all cetacean PVs constituted a monophyletic group with Alpha-, Omega-, and Dyodelta-PVs as inferred from E1-E2 early genes analyses, thus matching the shared phenotype of mucosal tropism. However, cetacean PVs, with the exception of PphPV3, were the closest relatives of Xi-PVs and Phi-PVs in L2-L1 late genes analyses, isolated from cow and goat, thus reflecting the close relationship between Cetacea and Artiodactyla. Our results are compatible with a recombination between ancestral PVs infecting the Cetartiodactyla lineage. Our study supports a complex evolutionary scenario with multiple driving forces for PV diversification, possibly including recombination and also interspecies transmission.

  18. Mitogenomic analyses of eutherian relationships.

    Science.gov (United States)

    Arnason, U; Janke, A

    2002-01-01

    Reasonably correct phylogenies are fundamental to the testing of evolutionary hypotheses. Here, we present phylogenetic findings based on analyses of 67 complete mammalian mitochondrial (mt) genomes. The analyses, irrespective of whether they were performed at the amino acid (aa) level or on nucleotides (nt) of first and second codon positions, placed Erinaceomorpha (hedgehogs and their kin) as the sister group of remaining eutherians. Thus, the analyses separated Erinaceomorpha from other traditional lipotyphlans (e.g., tenrecs, moles, and shrews), making traditional Lipotyphla polyphyletic. Both the aa and nt data sets identified the two order-rich eutherian clades, the Cetferungulata (comprising Pholidota, Carnivora, Perissodactyla, Artiodactyla, and Cetacea) and the African clade (Tenrecomorpha, Macroscelidea, Tubulidentata, Hyracoidea, Proboscidea, and Sirenia). The study corroborated recent findings that have identified a sister-group relationship between Anthropoidea and Dermoptera (flying lemurs), thereby making our own order, Primates, a paraphyletic assembly. Molecular estimates using paleontologically well-established calibration points, placed the origin of most eutherian orders in Cretaceous times, 70-100 million years before present (MYBP). The same estimates place all primate divergences much earlier than traditionally believed. For example, the divergence between Homo and Pan is estimated to have taken place approximately 10 MYBP, a dating consistent with recent findings in primate paleontology.

  19. Stomach lysozymes of the three-toed sloth (Bradypus variegatus), an arboreal folivore from the Neotropics.

    Science.gov (United States)

    Pacheco, M Andreína; Concepción, Juan Luís; Rangel, José David Rosales; Ruiz, Marie Christine; Michelangeli, Fabián; Domínguez-Bello, María G

    2007-07-01

    Lysozymes are antimicrobial defences that act as digestive enzymes when expressed in the stomach of herbivores with pre-gastric fermentation. We studied this enzyme in the complex stomach of the three-toed sloth (Bradypus variegatus), a folivore with pre-gastric fermentation. Lysozymes were identified by SDS-PAGE and immunoblotting in all portions: diverticulum, pouch, glandular and muscular prepyloric area with 14.3 kDa of molecular mass. Purified lysozymes from all areas but the diverticulum were characterized by MALDI-TOF, optimal pH, optimal ionic strength, and specific activity. The differences observed suggested at least three isoforms. The optimal pHs were similar to the pH of the stomach portion where the enzymes were isolated. The lysozyme from the pouch (fermentation chamber) exhibited higher specific activity and concentration than the others. The specific activity of the enzyme from the acid muscular prepyloric portion was comparable to that reported in the cow abomasums; however, its concentration was lower than that observed in cow. This distinctive pattern of secretion/specific activity and overall low concentration suggests different roles for the lysozymes in this herbivore compared to Artiodactyla. We postulate that sloth stomach lysozymes may still be antimicrobial defences by protecting the microbial flora of the fermentation chamber against foreign bacteria.

  20. Gene expression of axon growth promoting factors in the deer antler.

    Directory of Open Access Journals (Sweden)

    Wolfgang Pita-Thomas

    Full Text Available The annual regeneration cycle of deer (Cervidae, Artiodactyla antlers represents a unique model of epimorphic regeneration and rapid growth in adult mammals. Regenerating antlers are innervated by trigeminal sensory axons growing through the velvet, the modified form of skin that envelopes the antler, at elongation velocities that reach one centimetre per day in the common deer (Cervus elaphus. Several axon growth promoters like NT-3, NGF or IGF-1 have been described in the antler. To increase the knowledge on the axon growth environment, we have combined different gene-expression techniques to identify and characterize the expression of promoting molecules not previously described in the antler velvet. Cross-species microarray analyses of deer samples on human arrays allowed us to build up a list of 90 extracellular or membrane molecules involved in axon growth that were potentially being expressed in the antler. Fifteen of these genes were analysed using PCR and sequencing techniques to confirm their expression in the velvet and to compare it with the expression in other antler and skin samples. Expression of 8 axon growth promoters was confirmed in the velvet, 5 of them not previously described in the antler. In conclusion, our work shows that antler velvet provides growing axons with a variety of promoters of axon growth, sharing many of them with deer's normal and pedicle skin.

  1. Preliminary study of insects associated to indoor body decay in Colombia

    Directory of Open Access Journals (Sweden)

    Yardany Ramos-Pastrana

    2014-12-01

    Full Text Available Preliminary study of insects associated to indoor body decay in Colombia. This is the first report studying insects associated to indoor body decay process of a white pig (Sus scrofa (Artiodactyla, Suidae in a controlled indoor environment in an urban area of Florencia city, Amazonia Piedmont, Colombia. For a period of 54 days, 9,220 individuals (immature and adults, distributed in 3 orders, 5 families, 10 genera, and 10 species were collected using entomological nets and tweezers. Five decaying stages are described (fresh, bloated, active decay, advanced decay and remains. During the fresh stage we recorded Cochliomyia macellaria (Fabricius, 1775, Chrysomya albiceps (Wiedemann, 1819, Ophyra aenescens (Wiedemann, 1830, Oxysarcodexia sp., Lepidodexia sp. and Lasiophanes sp.; during the bloating stage C. macellaria, C. albiceps, Lucilia eximia (Wiedemann, 1819, Hemilucillia semidiaphana (Rondani, 1850, Musca domestica Linnaeus, 1758, O. aenescens, Oxysarcodexia sp., Lepidodexia sp., Dermestes maculatus De Geer, 1774 and Lasiphanes sp.; during the active decay C. macellaria, C. albiceps, L. eximia, M. domestica, O. aenescens, Lepidodexia sp. D. maculatus and Lasiophanes sp.; during the advanced decay C. macellaria, C. albiceps, M. domestica, Lepidodexia sp. and Lasiophanes sp.; and during the remains stage C. albiceps, D. maculatus and Lasiophanes sp. The insects were sorted out in 3 ecological categories; necrophagous, predators and parasites and sarco-saprophagous. According to Chao and Jack estimators, total richness was observed on day 20, with 100% of the expected species.

  2. The evolution of micro-cursoriality in mammals.

    Science.gov (United States)

    Lovegrove, Barry G; Mowoe, Metobor O

    2014-04-15

    In this study we report on the evolution of micro-cursoriality, a unique case of cursoriality in mammals smaller than 1 kg. We obtained new running speed and limb morphology data for two species of elephant-shrews (Elephantulus spp., Macroscelidae) from Namaqualand, South Africa, which we compared with published data for other mammals. Elephantulus maximum running speeds were higher than those of most mammals smaller than 1 kg. Elephantulus also possess exceptionally high metatarsal:femur ratios (1.07) that are typically associated with fast unguligrade cursors. Cursoriality evolved in the Artiodactyla, Perissodactyla and Carnivora coincident with global cooling and the replacement of forests with open landscapes in the Oligocene and Miocene. The majority of mammal species, though, remained non-cursorial, plantigrade and small (mammal earlier than in other mammalian crown groups. Micro-cursoriality evolved first in forests, presumably in response to selection for rapid running speeds facilitated by local knowledge, in order to avoid predators. During the Miocene, micro-cursoriality was pre-adaptive to open, arid habitats, and became more derived in the newly evolved Elephantulus and Macroscelides elephant-shrews with trail running.

  3. Seed predation by mammals in forest fragments in Monteverde, Costa Rica.

    Science.gov (United States)

    Chinchilla, Federico A

    2009-09-01

    Few studies have evaluated seed predation in fragmented landscapes, in which lower species diversity is expected to modifying ecological interactions. The rates of seed removal by mammals were investigated in a continuous forest and two fragmented patches of Premontane Tropical Moist Forest, in Monteverde, Costa Rica. The composition of mammalian seed-predators in each site was recorded during 16 months. The removal of four native tree species of experimental seeds: Ocotea valeriana and Ocotea whitei (Lauraceae), Panopsis costaricensis (Proteaceae) and Billia colombiana (Hippocastanaceae) in forest understories was followed during two annual fruiting seasons for each species. Results indicated similar species composition of seed-predators between continuous forest, the largest fragment (350 ha). However the smaller fragment (20 ha), had fewer seed predators. In this fragment, the specialized seed predator Heteromys desmarestianus (Rodentia) was more abundant. Unexpectedly, seed-predation in the two forest fragments and the continuous forest did not differ statistically for any of the seed species. Apparently, the higher abundance of small seed-predators in the fragments was compensated by the absence of medium and large seed-predators, like Agouti paca, Dasyprocta punctata (both Rodentia) and Pecari tajacu (Artiodactyla) recorded in continuous forest. Removal of experimentally-placed seeds was higher when the number of naturally occurring seeds in the sites was lower. This result could best be attributed to differential satiation of seed predators rather than differences in richness or abundance of seed predators.

  4. Cranial arterial pattern of the Sri Lankan spotted chevrotain, Moschiola memmina, and comparative basicranial osteology of the Tragulidae.

    Science.gov (United States)

    O'Brien, Haley D

    2015-01-01

    The cranial arterial pattern of artiodactyls deviates significantly from the typical mammalian pattern. One of the most striking atypical features is the rete mirabile epidurale: a subdural arterial meshwork that functionally and anatomically replaces the arteria carotis interna. This meshwork facilitates an exceptional ability to cool the brain, and was thought to be present in all artiodactyls. Recent research, however, has found that species of mouse deer (Artiodactyla: Tragulidae) endemic to the Malay Archipelago possess a complete a. carotis interna instead of a rete mirabile epidurale. As tragulids are the sister group to pecoran ruminants, the lack of a rete mirabile epidurale in these species raises intriguing evolutionary questions about the origin and nature of artiodactyl thermoregulatory cranial vasculature. In this study, cranial arterial patterns are documented for the remaining species within the Tragulidae. Radiopaque latex vascular injection, computed tomography (CT-scanning), and digital 3-dimensional anatomical reconstruction are used to image the cranial arteries of a Sri Lankan spotted chevrotain, Moschiola meminna. Sites of hard and soft tissue interaction were identified, and these osteological correlates were then sought in nine skulls representative of the remaining tragulid species. Both hard and soft tissue surveys confirm that the presence of an a. carotis interna is the common condition for tragulids. Moreover, the use of a 3-D, radiographic anatomical imaging technique enabled identification of a carotico-maxillary anastomosis that may have implications for the evolution of the artiodactyl rete mirabile epidurale.

  5. Comparison of virokine from camel pseudocowpoxvirus (PCPV) with interleukin 10 of the Dromedary camel (Camelus dromedarius).

    Science.gov (United States)

    Nagarajan, G; Swami, Shelesh Kumar; Dahiya, Shyam Singh; Sivakumar, G; Narnaware, S D; Tuteja, F C; Patil, N V

    2013-02-01

    Cellular interleukin-10 (IL-10) gene from the peripheral blood mononuclear cells of the healthy Dromedary camel (Camelus dromedarius) and viral IL-10 (vIL-10) from the skin scabs of the Dromedary camels infected with contagious ecthyma (a parapoxviral infection in the camels) were amplified by polymerase chain reaction, cloned and characterized. Sequence analysis revealed that the open reading frame (ORF) of dromedarian camel IL-10 is 537 bp in length, encoding 178 amino acid polypeptide while open reading frame of vIL-10 from camel is 561 bp, encoding 187 amino acid polypeptide. The Dromedary camel IL-10 exhibited 62.6% and 68.5% sequence identity at the nucleotide and amino acid level, respectively, with vIL-10 from camel. Sequence analysis also revealed that the Dromedary camel IL-10 shared 99.4% and 98.3% identity at the nucleotide and amino acid level, respectively, with the Bactrian camel (Camelus bactrianus). But vIL-10 from camel shared 84.7% and 83.4% sequence identity at the nucleotide and amino acid level, respectively, with vIL-10 from reindeer (Rangifer tarandus), which is a ruminant species belonging to the order Artiodactyla. The present study was conducted to evaluate the evolutionary origin of the camel parapoxvirus with parapoxviruses of cattle and sheep and the resultant sequence analysis revealed that camel parapoxvirus is closely related to cattle parapoxvirus than sheep parapoxvirus (Orf virus).

  6. A phylogenetic blueprint for a modern whale.

    Science.gov (United States)

    Gatesy, John; Geisler, Jonathan H; Chang, Joseph; Buell, Carl; Berta, Annalisa; Meredith, Robert W; Springer, Mark S; McGowen, Michael R

    2013-02-01

    The emergence of Cetacea in the Paleogene represents one of the most profound macroevolutionary transitions within Mammalia. The move from a terrestrial habitat to a committed aquatic lifestyle engendered wholesale changes in anatomy, physiology, and behavior. The results of this remarkable transformation are extant whales that include the largest, biggest brained, fastest swimming, loudest, deepest diving mammals, some of which can detect prey with a sophisticated echolocation system (Odontoceti - toothed whales), and others that batch feed using racks of baleen (Mysticeti - baleen whales). A broad-scale reconstruction of the evolutionary remodeling that culminated in extant cetaceans has not yet been based on integration of genomic and paleontological information. Here, we first place Cetacea relative to extant mammalian diversity, and assess the distribution of support among molecular datasets for relationships within Artiodactyla (even-toed ungulates, including Cetacea). We then merge trees derived from three large concatenations of molecular and fossil data to yield a composite hypothesis that encompasses many critical events in the evolutionary history of Cetacea. By combining diverse evidence, we infer a phylogenetic blueprint that outlines the stepwise evolutionary development of modern whales. This hypothesis represents a starting point for more detailed, comprehensive phylogenetic reconstructions in the future, and also highlights the synergistic interaction between modern (genomic) and traditional (morphological+paleontological) approaches that ultimately must be exploited to provide a rich understanding of evolutionary history across the entire tree of Life.

  7. Insights from stable light isotopes on enamel defects and weaning in Pliocene herbivores

    Indian Academy of Sciences (India)

    Tamara A Franz-Odendaal; Julia A Lee-Thorp; Anusuya Chinsamy

    2003-12-01

    A high prevalence of enamel hypoplasia in several herbivores from the early Pliocene Langebaanweg locality, South Africa, indicates general systemic stress during the growing years of life. The presence of several linear enamel hypoplasias per tooth crown in many teeth further suggest that these stress events may be episodic. The 18O values along tooth crowns of mandibular second molars of Sivatherium hendeyi (Artiodactyla, Giraffidae) were used to investigate the cause of the stress events in this tooth type. Results show that weaning in this fossil giraffid occurred at a similar ontogenetic age to that in extant giraffes, and that the observed enamel hypoplasia towards the base of this tooth type manifested post-weaning. Further, high-resolution oxygen isotope analyses across S. hendeyi third molars suggest that the entire development of defective tooth crowns occurred under conditions of increased aridity in which the cool, rainy part of the seasonal cycle was missing. The high prevalence of this defect in many herbivores suggests that climatic conditions were not favourable. This study reiterates the value of stable isotope analyses in determining both the behaviour of fossil animals and the environmental conditions that prevailed during tooth development.

  8. [Neurophysins of Mammals: evolution and biological signification].

    Science.gov (United States)

    Chauvet, M T; Coffe, G; Chauvet, J; Acher, R

    1976-01-01

    Neurohypophysial hormone-Neurophysin complexes have been prepared from posterior pituitary glands of Artiodactyla (ox, sheep, pig), Perissodactyla (horse) and Cetacea (whale), by fractionated salt precipitation. The components have been separated by molecular sieving in 0.2 M acetic acid and neurophysins have been purified by ion-exchange chromatography on DEAE-Sephadex A-50. Two types of neurophysins, MSEL-neurophysins and VLDV-neurophysins, can be distinguished according to the amino acid residues in positions 2, 3, 6 and 7. MSEL-neurophysins of sheep, ox and pig have been characterized by the amino acid sequence. Ovine and bovine MSEL-neurophysins are nearly identical (one substitution out of 95 residues) and porcine MSEL-neurophysin is very similar (four substitutions and an apparent 3-residue C-terminal deletion). The biological function of neurophysins might be the carriage of neurohypophysial hormones but in this respect, each type of neurophysin is not clearly specific for a given hormone. On the other hand, each neurophysin might share a common precursor with a neurohypophysial hormone, the two parts remaining associated after cleavage. However, in the sheep posterior pituitary gland, the molar proportions of the two types of neurophysins, oxytocin and arginine vasopressin, are not equal, MSEL-neurophysin being more abundant than the other components. If a common precursor exists, neurophysins and neurohypophysial hormones are not merely produced by a simple cleavage mechanism.

  9. Parasitic infections in wild ruminants and wild boar

    Directory of Open Access Journals (Sweden)

    Ilić Tamara

    2011-01-01

    Full Text Available Wild ruminants and wild boar belong to the order Artiodactyla, the suborders Ruminantia and Nonruminantia and are classified as wild animals for big game hunting, whose breeding presents a very important branch of the hunting economy. Diseases caused by protozoa are rarely found in wild ruminants in nature. Causes of coccidiosis, cryptosporidiosis, toxoplasmosis, sarcocystiosis, giardiasis, babesiosis, and theileriosis have been diagnosed in deer. The most significant helminthoses in wild ruminants are fasciosis, dicrocoeliasis, paramphistomosis, fascioloidosis, cysticercosis, anoplocephalidosis, coenurosis, echinococcosis, pulmonary strongyloidiasis, parasitic gastroenteritis, strongyloidiasis and trichuriasis, with certain differences in the extent of prevalence of infection with certain species. The most frequent ectoparasitoses in wild deer and doe are diseases caused by ticks, mites, scabies mites, and hypoderma. The most represented endoparasitoses in wild boar throughout the world are coccidiosis, balantidiasis, metastrongyloidiasis, verminous gastritis, ascariasis, macracanthorhynchosis, trichinelosis, trichuriasis, cystecercosis, echinococcosis, and less frequently, there are also fasciolosis and dicrocoeliasis. The predominant ectoparasitoses in wild boar are ticks and scabies mites. Knowledge of the etiology and epizootiology of parasitic infections in wild ruminants and wild boar is of extreme importance for the process of promoting the health protection system for animals and humans, in particular when taking into account the biological and ecological hazard posed by zoonotic infections.

  10. GEOGRAPHIC DISTRIBUTION AND MOLECULAR DIVERSITY OF BARTONELLA SPP. INFECTIONS IN MOOSE (ALCES ALCES) IN FINLAND.

    Science.gov (United States)

    Pérez Vera, Cristina; Aaltonen, Kirsi; Spillmann, Thomas; Vapalahti, Olli; Sironen, Tarja

    2016-04-28

    Moose, Alces alces (Artiodactyla: Cervidae) in Finland are heavily infested with deer keds, Lipoptena cervi (Diptera: Hippoboschidae). The deer ked, which carries species of the genus Bartonella, has been proposed as a vector for the transmission of bartonellae to animals and humans. Previously, bartonella DNA was found in deer keds as well as in moose blood collected in Finland. We investigated the prevalence and molecular diversity of Bartonella spp. infection from blood samples collected from free-ranging moose. Given that the deer ked is not present in northernmost Finland, we also investigated whether there were geographic differences in the prevalence of bartonella infection in moose. The overall prevalence of bartonella infection was 72.9% (108/148). Geographically, the prevalence was highest in the south (90.6%) and lowest in the north (55.9%). At least two species of bartonellae were identified by multilocus sequence analysis. Based on logistic regression analysis, there was no significant association between bartonella infection and either age or sex; however, moose from outside the deer ked zone were significantly less likely to be infected (Pmoose hunted within the deer ked zone.

  11. Conserved synteny between pig chromosome 8 and human chromosome 4 but rearranged and distorted linkage maps

    Energy Technology Data Exchange (ETDEWEB)

    Ellegren, H.; Edfors-Lilja, I.; Anderson, L. (Swedish Univ. of Agricultural Sciences, Uppsala (Sweden)); Wintero, A.K. (Royal Veterinary and Agricultural Univ., Fredriksberg (Denmark))

    1993-09-01

    The porcine genes encoding interleukin 2, alcohol dehydrogenase (class I) gamma polypeptide, and osteopontin were mapped to chromosome 8 by linkage analysis. Together with previous assignments to this chromosome (the albumin, platelet-derived growth factor receptor A, and fibrinogen genes), an extensive syntenic homology with human chromosome 4 was discovered. Loci from about three-quarters of the q arm of human chromosome 4 are on pig chromosome 8. However, the linear order of the markers is not identical in the two species, and there are several examples of interspecific differences in the recombination fractions between adjacent markers. The conserved synteny between man and the pig gives strong support to a previous suggestion that a synteny group present in the ancestor of mammalian species has been retained on human chromosome 4q. Since loci from this synteny group are found on two cattle chromosomes, the bovine rearrangement must have occurred after the split of Suidae and Bovidae within Artiodactyla. 29 refs., 3 figs., 1 tab.

  12. REVISED AND COMMENTED CHECKLIST OF MAMMAL SPECIES OF THE ROMANIAN FAUNA

    Directory of Open Access Journals (Sweden)

    Dumitru Murariu

    2015-12-01

    Full Text Available Due to the permanent influences of different factors (habitat degradation and fragmentation, deforestation, infrastructure and urbanization, natural extension or decreasing of some species’ distribution, increasing number of alien species etc., from time to time the faunistic structure of a certain area is changing. As a result of the permanent and increasing anthropic and invasive species’ pressure, our previous checklist of recent mammals from Romania (since 1984 became out of date. A number of 108 taxa are mentioned in this checklist, representing 7 orders of mammals: Insectivora (10 species, Chiroptera (30 sp., Lagomorpha (2 sp., Rodentia (35 sp., Cetacea (3 sp., Carnivora (19 sp., Artiodactyla (8 sp.. In this list are mentioned the scientific and vernacular names (in Romanian and English languages, species distribution and conservation status, according to the Romanian regulations. Thus, only 21 species have stable populations while 76 have populations in decline or in drastic decline. Other categories are not evaluated or even present an increase in their population.

  13. Status of dosage compensation of X chromosome in bovine genome.

    Science.gov (United States)

    Ka, Sojeong; Ahn, Hyeonju; Seo, Minseok; Kim, Heebal; Kim, Jin Nam; Lee, Hyun-Jeong

    2016-08-01

    Dosage compensation system with X chromosome upregulation and inactivation have evolved to overcome the genetic imbalance between sex chromosomes in both male and female of mammals. Although recent development of chromosome-wide technologies has allowed us to test X upregulation, discrete data processing and analysis methods draw disparate conclusions. A series of expression studies revealed status of dosage compensation in some species belonging to monotremes, marsupials, rodents and primates. However, X upregulation in the Artiodactyla order including cattle have not been studied yet. In this study, we surveyed the genome-wide transcriptional upregulation in X chromosome in cattle RNA-seq data using different gene filtration methods. Overall examination of RNA-seq data revealed that X chromosome in the pituitary gland expressed more genes than in other peripheral tissues, which was consistent with the previous results observed in human and mouse. When analyzed with globally expressed genes, a median X:A expression ratio was 0.94. The ratio of 1-to-1 ortholog genes between chicken and mammals, however, showed considerable reduction to 0.68. These results indicate that status of dosage compensation for cattle is not deviated from those found in rodents and primate, and this is consistent with the evolutionary history of cattle.

  14. Immunocontraception of captive exotic species: V. Prolonged antibody titers in Dall sheep (Ovis dalli dalli) and domestic goats (Capra hircus) immunized with porcine zona pellucida.

    Science.gov (United States)

    Lyda, Robin O; Frank, Kimberly M; Wallace, Roberta; Lamberski, Nadine; Kirkpatrick, Jay F

    2013-12-01

    Native porcine zona pellucida (PZP) immunocontraception has been used to inhibit fertility in more than 80 species of ungulates, although the duration of contraception efficacy varies among species in both Perissodactyla and Artiodactyla. This study examined anti-PZP antibody titers in Dall sheep and domestic goats at the Milwaukee County Zoo, and also Himalayan tahr and Armenian Mouflon sheep at the San Diego Zoo Safari Park, and, for comparison, Altai wapiti, lowland wisent, Javan banteng, and southern pudu at the San Diego Zoo Safari Park, all were given a primer dose and booster dose of PZP. Of the San Diego Zoo Safari Park animals, the 4 comparison species demonstrated the typical 1-yr pattern of anti-PZP antibodies, whereas the Armenian sheep and Himalayan tahr showed prolonged (2-3 yr) antibody responses after a single primer and booster dose. The Dall sheep and domestic goats had significantly longer durations of antibody titers (3 yr) from a single year's treatment (primer plus booster). Analysis of the data indicates that Armenian sheep, Himalayan tahr, Dall sheep, and domestic goats have prolonged responses, and are more sensitive to PZP in that they produce a protracted antibody response.

  15. Hyalomma (Hyalommina) arabica sp. n. parasitizing goats and sheep in the Yemen Arab Republic and Saudi Arabia.

    Science.gov (United States)

    Pegram, R G; Hoogstraal, H; Wassef, H Y

    1982-02-01

    Hyalomma (Hyalommina) arabica sp. n. is described from 62 adults (29 males, 33 females) taken throughout the year from 23 goats and two sheep, mostly at 200 m altitude in the southern tihama foothills of Ta'izz Province, Yemen Arab Republic. One female from a goat at 2,300 m altitude in this Province may have attached to the host elsewhere and a male from Mecca, Saudi Arabia, was on a goat imported from an unknown source for the traditional religious pilgrimage feast. We postulate that the original host of adults was the Nubian ibex, Capra ibex nubiana F. Cuvier (Artiodactyla: Caprinae). This parasite is most closely related to H. (H.) kumari Sharif, which infests chiefly wild and domestic Caprinae from India to northwestern Iran and Tadzhik, SSR. It also shows relationships to H. (H.) punt Hoogstraal, Kaiser and Pedersen, which parasitizes gazelles and domestic mammals in Somalia and Ethiopia, but differs more widely from the third African-Arabian member of this subgenus, H. (H.) rhipicephaloides Neumann, which feeds on the Nubian ibex and gazelles in the Red Sea and Dead Sea areas. The Hyalomma subgenus Hyalommina now contains seven species, four confined to the Indian subcontinent (including Nepal, Burma, India, Sri Lanka, Pakistan, and Afghanistan) and Southwest Asia, and three in eastern Africa north of the equator and Arabia.

  16. An examination of the proteolytic activity for bovine pregnancy-associated glycoproteins 2 and 12.

    Science.gov (United States)

    Telugu, Bhanu Prakash V L; Palmier, Mark O; Van Doren, Steven R; Green, Jonathan A

    2010-01-01

    The pregnancy-associated glycoproteins (PAGs) represent a complex group of putative aspartic peptidases expressed exclusively in the placentas of species in the Artiodactyla order. The ruminant PAGs segregate into two classes: the 'ancient' and 'modern' PAGs. Some of the modern PAGs possess alterations in the catalytic center that are predicted to preclude their ability to act as peptidases. The ancient ruminant PAGs in contrast are thought to be peptidases, although no proteolytic activity has been described for these members. The aim of the present study was to investigate (1) if the ancient bovine PAGs (PAG-2 and PAG-12) have proteolytic activity, and (2) if there are any differences in activity between these two closely related members. Recombinant bovine PAG-2 and PAG-12 were expressed in a baculovirus expression system and the purified proteins were analyzed for proteolytic activity against a synthetic fluorescent cathepsin D/E substrate. Both proteins exhibited proteolytic activity with acidic pH optima. The k(cat)/K(m) for bovine PAG-2 was 2.7x10(5) m(-1) s(-1) and for boPAG-12 it was 6.8x10(4) m(-1) s(-1). The enzymes were inhibited by pepstatin A with a K(i) of 0.56 and 7.5 nm for boPAG-2 and boPAG-12, respectively. This is the first report describing proteolytic activity in PAGs from ruminant ungulates.

  17. Morphology of the tracheobronchial tree and the route of the pulmonary artery in the fetal minke whale (Balaenoptera acutorostrata).

    Science.gov (United States)

    Kida, M Y

    1998-12-01

    Molecular and statistical studies support the close phylogenetic relation between Cetacea and Artiodactyla. The presence of the tracheal bronchus has been pointed out as one of the common traits between only these groups. Nakakuki (1980) has investigated the mammalian tracheobronchial trees in 50 species based on his new nomenclature, and his study has consequently demonstrated the above-mentioned indication. Therefore, comparative anatomy of the tracheobronchial tree based on the nomenclature seems to be useful for investigations of the cetacean phylogeny. Three pairs of fetal lungs of the minke whale (Balaenoptera acutorostrata) were supplied from the Institute of Cetacean Research, Tokyo (1991) to observe their tracheobronchial trees and the ramification of the pulmonary artery. The fetal tracheobronchial tree consisted of one tracheal, four lateral, four dorsal and one medial secondary bronchi in the right lung, and five or six lateral and four or five dorsal secondary bronchi in the left, using the new nomenclature. The right pulmonary artery crossed the right axial bronchus from the ventral side to the dorsal over the third lateral bronchus. The tracheal bronchus in the fetal minke whale seems to belong to the type II of Nakakuki's nomenclature, and this type is seen in one species of the river dolphins. The other conspicuous traits of the fetal lungs are the defect of the second lateral broncus and the route of the pulmonary artery in the right side. This route is very different from that of many other mammals.

  18. For whales and seals the ocean is not blue: a visual pigment loss in marine mammals.

    Science.gov (United States)

    Peichl, L; Behrmann, G; Kröger, R H

    2001-04-01

    Most terrestrial mammals have colour vision based on two spectrally different visual pigments located in two types of retinal cone photoreceptors, i.e. they are cone dichromats with long-to-middle-wave-sensitive (commonly green) L-cones and short-wave-sensitive (commonly blue) S-cones. With visual pigment-specific antibodies, we here demonstrate an absence of S-cones in the retinae of all whales and seals studied. The sample includes seven species of toothed whales (Odontoceti) and five species of marine carnivores (eared and earless seals). These marine mammals have only L-cones (cone monochromacy) and hence are essentially colour-blind. For comparison, the study also includes the wolf, ferret and European river otter (Carnivora) as well as the mouflon and pygmy hippopotamus (Artiodactyla), close terrestrial relatives of the seals and whales, respectively. These have a normal complement of S-cones and L-cones. The S-cone loss in marine species from two distant mammalian orders strongly argues for convergent evolution and an adaptive advantage of that trait in the marine visual environment. To us this suggests that the S-cones may have been lost in all whales and seals. However, as the spectral composition of light in clear ocean waters is increasingly blue-shifted with depth, an S-cone loss would seem particularly disadvantageous. We discuss some hypotheses to explain this paradox.

  19. Epidemiology of leptospirosis at Sorocaba Zoo, São Paulo state, Southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Leila S. Ullmann

    2012-11-01

    Full Text Available Leptospirosis is considered a worldwide distributed zoonosis, caused by the bacteria Leptospira spp. Since several species of wildlife animals are reportedly reservoirs, the aim of the present study was to know the epidemiology of leptospirosis at the Sorocaba Zoo, Southern Brazil. Serum samples of wild mammals from Artiodactyla, Carnivora, Didelphimorphia, Diprotodontia, Perissodactyla, Pilosa, Primates, Proboscidea and Rodentia orders, kept in captivity as well as from zoological staff were assayed by microscopic agglutination test (MAT. Whole blood, urine and tissue samples from wild mammals and synanthropic animals were assayed by polymerase chain reaction (PCR. An epidemiological survey was applied to evaluate the risk factors for animal infection and staff level of knowledge on leptospirosis. A total of 13/229 (5.68%; CI95% 3.37-9.47% serum samples from wild mammals were reagent on MAT. Serology from synanthropic animals, zoo staff and molecular analysis of animal samples were all negative. Leptospirosis knowledge of zoo park staff was considered medium. In conclusion, leptospiral infection occurs at the studied zoo but due to the low occurrence found, the lowest reported in literature, wild captive mammals do not act as source of infection of leptospirosis to other animals and human beings.

  20. Serological survey of bovine viral diarrhoea virus in Namibian and South African kudu (Tragelaphus strepsiceros and eland (Taurotragus oryx

    Directory of Open Access Journals (Sweden)

    Terence P. Scott

    2013-02-01

    Full Text Available Bovine viral diarrhoea virus (BVDV is a pestivirus that affects members of the order Artiodactyla, including members of the subfamily Bovinae. Little is known about the seroprevalence of BVDV in southern Africa, especially the prevalence in wild ruminant populations such as kudu (Tragelaphus strepsiceros. A handful of random surveys suggested that seroprevalence ranged between 6% and 70% in southern African wild ruminants. The present study aimed to determine the seroprevalence of BVDV amongst kudu and eland (Taurotragus oryx from Namibia and South Africa. A BVDV-specific enzyme-linked immunosorbent assay was performed on 50 serum samples from kudu and eland from South Africa and Namibia. The seroprevalence of BVDV in South African kudu was 71%, identical to that in Namibian kudu. The seroprevalence in Namibian eland was 40%. The kudu and cattle farming (free ranging regions in Namibia predominantly overlap in the central regions, ensuring ample opportunity for cross-species transmission of BVDV. It is therefore important to determine the true prevalence of BVDV in southern Africa in both domesticated and wild animals. In addition, a potential link between BVDV incidence and a devastating rabies epidemic in Namibian kudu was proposed and such a notion could be supported or discredited by comparative prevalence data.

  1. A survey of recent mammal collections in italy

    Directory of Open Access Journals (Sweden)

    Anna Maria De Marinis

    2008-02-01

    Full Text Available Abstract A survey was designed to assess the status of the collections of recent mammals in Italy through 79 questionnaires mailed to the main University institutions, municipal, provincial or regional museums and other institutions (including some private collections. We received 58 questionnaires (return rate of 73%. The minimum number of specimens in recent mammal collections in Italy is 161,268 (70% are in Italian collections and 30% in exotic ones. Most of these specimens are concentrated in a quarter of the collections. Taxidermy is the main preservation technique, above all in exotic collections (84%. 82% of the exotic collections date back to the 19th century, while specimens collected after 1950 form 91% of the Italian ones. During the 20th century the Italian collections progressively increased in number and spread through the peninsula and in Sicily. Insectivora, Rodentia, Carnivora, Lagomorpha, Artiodactyla and Primates are represented in more than 80% of the collections. Research results the primary goal both in Italian (70% and exotic (57% collections.

    Appendix
    This paper contains an appendix, available in electronic format only.
    Click here to download supplementary files.
    Riassunto Le collezioni di mammiferi attuali in Italia. Per delineare lo status delle collezioni museali di mammiferi attuali in Italia è stata condotta un’indagine mediante 79 questionari inviati a istituzioni universitarie, musei civici, provinciali e regionali ed altre istituzioni (comprese alcune collezioni private. Abbiamo ricevuto 58 questionari (73%. In Italia il numero minimo di esemplari di mammiferi attuali presenti nelle collezioni è risultato 161.268 (il 70% in collezioni italiane, il rimanente 30% in collezioni esotiche. La maggior parte degli

  2. Faster speciation and reduced extinction in the tropics contribute to the Mammalian latitudinal diversity gradient.

    Directory of Open Access Journals (Sweden)

    Jonathan Rolland

    2014-01-01

    Full Text Available The increase in species richness from the poles to the tropics, referred to as the latitudinal diversity gradient, is one of the most ubiquitous biodiversity patterns in the natural world. Although understanding how rates of speciation and extinction vary with latitude is central to explaining this pattern, such analyses have been impeded by the difficulty of estimating diversification rates associated with specific geographic locations. Here, we use a powerful phylogenetic approach and a nearly complete phylogeny of mammals to estimate speciation, extinction, and dispersal rates associated with the tropical and temperate biomes. Overall, speciation rates are higher, and extinction rates lower, in the tropics than in temperate regions. The diversity of the eight most species-rich mammalian orders (covering 92% of all mammals peaks in the tropics, except that of the Lagomorpha (hares, rabbits, and pikas reaching a maxima in northern-temperate regions. Latitudinal patterns in diversification rates are strikingly consistent with these diversity patterns, with peaks in species richness associated with low extinction rates (Primates and Lagomorpha, high speciation rates (Diprotodontia, Artiodactyla, and Soricomorpha, or both (Chiroptera and Rodentia. Rates of range expansion were typically higher from the tropics to the temperate regions than in the other direction, supporting the "out of the tropics" hypothesis whereby species originate in the tropics and disperse into higher latitudes. Overall, these results suggest that differences in diversification rates have played a major role in shaping the modern latitudinal diversity gradient in mammals, and illustrate the usefulness of recently developed phylogenetic approaches for understanding this famous yet mysterious pattern.

  3. The role of wild mammals in the maintenance of Rift Valley fever virus.

    Science.gov (United States)

    Olive, Marie-Marie; Goodman, Steven M; Reynes, Jean-Marc

    2012-04-01

    Rift Valley fever virus (RVFV) is a zoonotic arbovirus affecting primarily domestic ruminants and humans. Numerous vector species are known or implicated in the transmission of RVFV. The role of mammals in the maintenance of RVFV, and the existence of a wild mammal reservoir in the epidemiologic cycle of RVFV, remain largely unknown. Our objective is to present a detailed review of studies undertaken on RVFV, often associated with wild mammals, with the aim of focusing future research on potential reservoirs of the virus. Natural and experimental infections related to RVFV in several mammalian orders, including Artiodactyla, Chiroptera, Rodentia, Primata (nonhuman), Perissodactyla, Carnivora, Proboscidea, Erinaceomorpha, and Lagomorpha, are reviewed; the first four orders have received the greatest attention. The possible role of wild ruminants, especially African buffalo (Syncerus caffer), is also discussed. Conflicting results have been published concerning rodents but, based on the literature, the likely candidate species include the African genera Arvicanthis and Micaelamys and the widely introduced roof rat (Rattus rattus). Members of the orders Chiroptera and Rodentia should receive greater attention associated with new research programs. For the other orders mentioned above, few data are available. We are unaware of any investigation concerning the orders Afrosoricida and Soricomorpha, which are represented in the geographic area of RVFV and can be abundant. As a first step to resolve the question of wild mammals as a reservoir of RVFV, serologic and virologic surveys should be promoted during epizootic periods to document infected wild animals and, in the case of positive results, extended to interepidemic periods to explore the role of wild animals as possible reservoirs.

  4. Mammalian Herbivores in the Boreal Forests: Their Numerical Fluctuations and Use by Man

    Directory of Open Access Journals (Sweden)

    Kjell Danell

    1998-12-01

    Full Text Available Within the boreal zone, there are about 50 native mammalian herbivore species that belong to the orders Artiodactyla, Rodentia, and Lagomorpha. Of these species, 31 occur in the Nearctic and 24 in the Palaearctic. Only six species occur in both regions. Species of the family Cervidae have probably been, and still are, the most important group for man, as they provide both meat and hides. Pelts from squirrels, muskrats, and hares were commercially harvested at the beginning of the century, but have less value today. The semi-domestic reindeer in the Palaearctic produces meat and hides on a commercial basis. It is also used for milking, to a limited extent, as is the semi-domestic moose in Russia. The Siberian musk deer is used for its musk and is raised in captivity in China. All species heavier than 1 kg are utilized by man, those with a body mass in the range 1 kg - 1 hg are sometimes used, and species lighter than 1 hg are rarely used. Here, we review the numerical fluctuations in terms of periodicity and amplitude, based on an extensive data set found in the literature, especially from the former Soviet Union. Current understanding of the underlying factors behind the population fluctuations is briefly reviewed. Management and conservation aspects of the mammalian herbivores in the boreal zone are also discussed. We conclude that there is a challenge to manage the forests for the mammalian herbivores, but there is also a challenge to manage the populations of mammalian herbivores for the forests.

  5. A nationwide database linking information on the hosts with sequence data of their virus strains: A useful tool for the eradication of bovine viral diarrhea (BVD) in Switzerland.

    Science.gov (United States)

    Stalder, Hanspeter; Hug, Corinne; Zanoni, Reto; Vogt, Hans-Rudolf; Peterhans, Ernst; Schweizer, Matthias; Bachofen, Claudia

    2016-06-15

    Pestiviruses infect a wide variety of animals of the order Artiodactyla, with bovine viral diarrhea virus (BVDV) being an economically important pathogen of livestock globally. BVDV is maintained in the cattle population by infecting fetuses early in gestation and, thus, by generating persistently infected (PI) animals that efficiently transmit the virus throughout their lifetime. In 2008, Switzerland started a national control campaign with the aim to eradicate BVDV from all bovines in the country by searching for and eliminating every PI cattle. Different from previous eradication programs, all animals of the entire population were tested for virus within one year, followed by testing each newborn calf in the subsequent four years. Overall, 3,855,814 animals were tested from 2008 through 2011, 20,553 of which returned an initial BVDV-positive result. We were able to obtain samples from at least 36% of all initially positive tested animals. We sequenced the 5' untranslated region (UTR) of more than 7400 pestiviral strains and compiled the sequence data in a database together with an array of information on the PI animals, among others, the location of the farm in which they were born, their dams, and the locations where the animals had lived. To our knowledge, this is the largest database combining viral sequences with animal data of an endemic viral disease. Using unique identification tags, the different datasets within the database were connected to run diverse molecular epidemiological analyses. The large sets of animal and sequence data made it possible to run analyses in both directions, i.e., starting from a likely epidemiological link, or starting from related sequences. We present the results of three epidemiological investigations in detail and a compilation of 122 individual investigations that show the usefulness of such a database in a country-wide BVD eradication program.

  6. Metrical analysis of dromedary digital bones.

    Science.gov (United States)

    Nourinezhad, Jamal; Mazaheri, Yazdan; Ahi, Mohammad Reza

    2015-03-01

    Dromedary camels are large even-toed ungulates which are well adapted to life in large deserts. Examinations of their feet have revealed many structural peculiarities. We have measured the digital bones of the dromedary in order to determine whether there are morphometric variations in the digital bones between the lateral and medial sides in individual limbs and/or in the right and left thoracic and pelvic limbs, with the aim to clarify whether there are anatomical differences in the digital bones of dromedary as a suborder of the order Artiodactyla. Measurements were made of 240 lateral and medial proximal, middle, and distal phalanges in the left and right thoracic and pelvic limbs of ten healthy adult male dromedaries, ranging in age from 6 to 10 years. A total of 17 linear dimensions were measured using a caliper. The results indicate that there are no significant differences between corresponding measurements of digital bones of the lateral and medial in the same limb, nor between measurements of the right and left sides. The lengths and widths of the proximal and middle, and distal phalanges in the thoracic limb were found to be greater than those of the pelvic limb. The sum of the total lengths of the three phalanges of the thoracic limbs was 15 mm greater than that of the phalanges of the pelvic limbs due to a longer proximal phalanx (76 %) and middle phalanx of the former (24 %). The perspectives obtained by our morphometric study of dromedary digital bones not only provide a tool to distinguish the osteological remains of the dromedary from those of the Bactrian camel or other artiodactyls in archaeological sites, but they also suggest a possible influence of digital structure on digit functions and digital disorders.

  7. Cross-reactivity between immunoglobulin G antibodies of whales and dolphins correlates with evolutionary distance.

    Science.gov (United States)

    Nollens, Hendrik H; Ruiz, Carolina; Walsh, Michael T; Gulland, Frances M D; Bossart, Gregory; Jensen, Eric D; McBain, James F; Wellehan, James F X

    2008-10-01

    Growing morphological and molecular evidence indicates that the porpoises, dolphins, and whales evolved within the even-toed ungulates, formerly known as Artiodactyla. These animals are now grouped in the Cetartiodactyla. We evaluated the antigenic similarity of the immunoglobulin G (IgG) molecules of 15 cetacean species and the domestic cow. The similarity was scored using three distinct antibodies raised against bottlenose dolphin (Tursiops truncatus) IgG in a Western blot, an indirect enzyme-linked immunosorbent assay (ELISA), and a competitive ELISA format. A score was generated for the genetic distance between each species and T. truncatus using the cytochrome b sequence. Each antibody displayed a distinct pattern of reactivity with the IgG antibodies of the various species. The monoclonal antibody (MAb) specific for the gamma heavy chain of T. truncatus was reactive with all monodontids, delphinids, and phocoenids. The light-chain-specific MAb reacted with IgG of delphinoid and phocoenid species and one of the two mysticete species tested. The polyclonal antibody was broadly cross-reactive across all cetaceans and the domestic cow. Using the MAb specific for the gamma heavy chain, the degree of IgG cross-reactivity ranged from less than 17% for the mysticetes to 106% for killer whale Orcinus orca. The IgG in beaked whale and baleen whale sera was significantly less cross-reactive with bottlenose dolphin IgG than sera from other toothed whales. A strong negative correlation was demonstrated between antigenic cross-reactivity of IgG molecules and the genetic distance of their hosts. The data generated will be useful for the development of clinical serodiagnostics in diverse cetacean species.

  8. Parasitism of the deer ked, Lipoptena cervi, on the moose, Alces alces, in eastern Finland.

    Science.gov (United States)

    Paakkonen, T; Mustonen, A-M; Roininen, H; Niemelä, P; Ruusila, V; Nieminen, P

    2010-12-01

    The deer ked, Lipoptena cervi L. (Diptera: Hippoboscidae), is an ectoparasitic fly that spread to Finland in the early 1960s from the southeast across the Soviet border. It is currently a common parasite of the moose, Alces alces (Artiodactyla: Cervidae), in the southern part of the country and its area of distribution is gradually spreading to Finnish Lapland, where it will come into contact with another potential cervid host, the semi-domesticated reindeer, Rangifer tarandus tarandus. The aim of this study was to determine the intensity of deer ked parasitism on the moose in eastern Finland. Whole skins of 23 moose were examined for the presence of deer keds, which were extracted and their total numbers estimated. The intensity of deer ked parasitism was correlated to the age, sex, skin area and anatomical region of the host. Bulls had the highest total number of keds (10616 ± 1375) and the highest deer ked density (35.7 ± 4.4 keds/dm(2) of skin). Cows had a higher total number of keds than calves (3549 ± 587 vs. 1730 ± 191), but ked densities on cows and calves were roughly equal (11.8 ± 1.7 vs. 9.4 ± 1.1 keds/dm(2) of skin). The density of keds was highest on the anterior back, followed by the posterior back, front limbs, abdomen, head and hind limbs. The sex ratio of deer keds was close to equal (male : female, 1.0 : 1.1). After they had consumed blood, male keds were heavier than females. As the total numbers and densities of deer keds were higher than reported previously on moose or for any other louse fly species, the effects of parasitism on the health of the host species should be determined.

  9. Evolution of C, D and S-type cystatins in mammals: an extensive gene duplication in primates.

    Science.gov (United States)

    de Sousa-Pereira, Patrícia; Abrantes, Joana; Pinheiro, Ana; Colaço, Bruno; Vitorino, Rui; Esteves, Pedro J

    2014-01-01

    Cystatins are a family of inhibitors of cysteine peptidases that comprises the salivary cystatins (D and S-type cystatins) and cystatin C. These cystatins are encoded by a multigene family (CST3, CST5, CST4, CST1 and CST2) organized in tandem in the human genome. Their presence and functional importance in human saliva has been reported, however the distribution of these proteins in other mammals is still unclear. Here, we performed a proteomic analysis of the saliva of several mammals and studied the evolution of this multigene family. The proteomic analysis detected S-type cystatins (S, SA, and SN) in human saliva and cystatin D in rat saliva. The evolutionary analysis showed that the cystatin C encoding gene is present in species of the most representative mammalian groups, i.e. Artiodactyla, Rodentia, Lagomorpha, Carnivora and Primates. On the other hand, D and S-type cystatins are mainly retrieved from Primates, and especially the evolution of S-type cystatins seems to be a dynamic process as seen in Pongo abelii genome where several copies of CST1-like gene (cystatin SN) were found. In Rodents, a group of cystatins previously identified as D and S has also evolved. Despite the high divergence of the amino acid sequence, their position in the phylogenetic tree and their genome organization suggests a common origin with those of the Primates. These results suggest that the D and S type cystatins have emerged before the mammalian radiation and were retained only in Primates and Rodents. Although the mechanisms driving the evolution of cystatins are unknown, it seems to be a dynamic process with several gene duplications evolving according to the birth-and-death model of evolution. The factors that led to the appearance of a group of saliva-specific cystatins in Primates and its rapid evolution remain undetermined, but may be associated with an adaptive advantage.

  10. Ex vivo bioluminescence detection of alcelaphine herpesvirus 1 infection during malignant catarrhal fever.

    Science.gov (United States)

    Dewals, Benjamin; Myster, Françoise; Palmeira, Leonor; Gillet, Laurent; Ackermann, Mathias; Vanderplasschen, Alain

    2011-07-01

    Alcelaphine herpesvirus 1 (AlHV-1), carried by wildebeest asymptomatically, causes malignant catarrhal fever (WD-MCF) when cross-species transmitted to a variety of susceptible species of the Artiodactyla order. Experimentally, WD-MCF can be reproduced in rabbits. WD-MCF is described as a combination of lymphoproliferation and degenerative lesions in virtually all organs and is caused by unknown mechanisms. Recently, we demonstrated that WD-MCF is associated with the proliferation of CD8(+) cells supporting a latent type of infection in lymphoid tissues. Here, we investigated the macroscopic distribution of AlHV-1 infection using ex vivo bioluminescence imaging in rabbit to determine whether it correlates with the distribution of lesions in lymphoid and nonlymphoid organs. To reach that goal, a recombinant AlHV-1 strain was produced by insertion of a luciferase expression cassette (luc) in an intergenic region. In vitro, the reconstituted AlHV-1 luc(+) strain replicated comparably to the parental strain, and luciferase activity was detected by bioluminescence imaging. In vivo, rabbits infected with the AlHV-1 luc(+) strain developed WD-MCF comparably to rabbits infected with the parental wild-type strain, with hyperthermia and increases of both CD8(+) T cell frequencies and viral genomic charge over time in peripheral blood mononuclear cells and in lymph nodes at time of euthanasia. Bioluminescent imaging revealed that AlHV-1 infection could be detected ex vivo in lymphoid organs but also in lung, liver, and kidney during WD-MCF, demonstrating that AlHV-1 infection is prevalent in tissue lesions. Finally, we show that the infiltrating mononuclear leukocytes in nonlymphoid organs are mainly CD8(+) T cells and that latency is predominant during WD-MCF.

  11. Behavioral Traits and Airport Type Affect Mammal Incidents with U.S. Civil Aircraft

    Science.gov (United States)

    Schwarz, Kristin B.; Belant, Jerrold L.; Martin, James A.; DeVault, Travis L.; Wang, Guiming

    2014-10-01

    Wildlife incidents with aircraft cost the United States (U.S.) civil aviation industry >US1.4 billion in estimated damages and loss of revenue from 1990 to 2009. Although terrestrial mammals represented only 2.3 % of wildlife incidents, damage to aircraft occurred in 59 % of mammal incidents. We examined mammal incidents (excluding bats) at all airports in the Federal Aviation Administration (FAA) National Wildlife Strike Database from 1990 to 2010 to characterize these incidents by airport type: Part-139 certified (certificated) and general aviation (GA). We also calculated relative hazard scores for species most frequently involved in incidents. We found certificated airports had more than twice as many incidents as GA airports. Incidents were most frequent in October ( n = 215 of 1,764 total) at certificated airports and November ( n = 111 of 741 total) at GA airports. Most (63.2 %) incidents at all airports ( n = 1,523) occurred at night but the greatest incident rate occurred at dusk (177.3 incidents/hr). More incidents with damage ( n = 1,594) occurred at GA airports (38.6 %) than certificated airports (19.0 %). Artiodactyla (even-toed ungulates) incidents incurred greatest (92.4 %) damage costs ( n = 326; US51.8 million) overall and mule deer ( Odocoileus hemionus) was the most hazardous species. Overall, relative hazard score increased with increasing log body mass. Frequency of incidents was influenced by species relative seasonal abundance and behavior. We recommend airport wildlife officials evaluate the risks mammal species pose to aircraft based on the hazard information we provide and consider prioritizing management strategies that emphasize reducing their occurrence on airport property.

  12. Cholinergic urethral brush cells are widespread throughout placental mammals.

    Science.gov (United States)

    Deckmann, Klaus; Krasteva-Christ, Gabriela; Rafiq, Amir; Herden, Christine; Wichmann, Judy; Knauf, Sascha; Nassenstein, Christina; Grevelding, Christoph G; Dorresteijn, Adriaan; Chubanov, Vladimir; Gudermann, Thomas; Bschleipfer, Thomas; Kummer, Wolfgang

    2015-11-01

    We previously identified a population of cholinergic epithelial cells in murine, human and rat urethrae that exhibits a structural marker of brush cells (villin) and expresses components of the canonical taste transduction signaling cascade (α-gustducin, phospholipase Cβ2 (PLCβ2), transient receptor potential cation channel melanostatin 5 (TRPM5)). These cells serve as sentinels, monitoring the chemical composition of the luminal content for potentially hazardous compounds such as bacteria, and initiate protective reflexes counteracting further ingression. In order to elucidate cross-species conservation of the urethral chemosensory pathway we investigated the occurrence and molecular make-up of urethral brush cells in placental mammals. We screened 11 additional species, at least one in each of the five mammalian taxonomic units primates, carnivora, perissodactyla, artiodactyla and rodentia, for immunohistochemical labeling of the acetylcholine synthesizing enzyme, choline acetyltransferase (ChAT), villin, and taste cascade components (α-gustducin, PLCβ2, TRPM5). Corresponding to findings in previously investigated species, urethral epithelial cells with brush cell shape were immunolabeled in all 11 mammals. In 8 species, immunoreactivities against all marker proteins and ChAT were observed, and double-labeling immunofluorescence confirmed the cholinergic nature of villin-positive and chemosensory (TRPM5-positive) cells. In cat and horse, these cells were not labeled by the ChAT antiserum used in this study, and unspecific reactions of the secondary antiserum precluded conclusions about ChAT-expression in the bovine epithelium. These data indicate that urethral brush cells are widespread throughout the mammalian kingdom and evolved not later than about 64.5millionyears ago.

  13. An Acute Multispecies Episode of Sheep-Associated Malignant Catarrhal Fever in Captive Wild Animals in an Italian Zoo.

    Science.gov (United States)

    Frontoso, R; Autorino, G L; Friedrich, K G; Li, H; Eleni, C; Cocumelli, C; Di Cerbo, P; Manna, G; Scicluna, M T

    2016-12-01

    In July 2011, in a zoological garden in Rome, Italy, malignant catarrhal fever (MCF), a fatal, systemic disease of Artiodactyla, was suspected on the basis of neurological signs and gross lesions observed in a banteng, the first animal to die of this infection. An MCF type-specific PCR with subsequent sequencing of the PCR amplicon confirmed the aetiological agent as ovine herpesvirus-2 (OvHV-2). Biological samples were collected from the dead animals for gross, histological, bacteriological, virological and serological examinations. An epidemiological investigation was conducted to identify the source of the outbreak, as further deaths due to OvHV-2 still occurred after the removal of the acknowledged reservoirs, domestic sheep and goats. For this purpose, samples from other susceptible species and reservoir hosts were collected for virological and serological analysis. In conjunction, a retrospective sero-investigation was conducted on sera collected between 1999 and 2010 from some of the species involved in the present episode. In total, 11 animals belonging to four different species (banteng, Himalayan tahr, Nile lechwe and sika deer) died between July 2011 and October 2012. The severe gross and histological lesions were consistent with the disease, namely haemorrhages and congestion of several organs as well as lymphoid cell infiltrates and vasculitis of varying severity. The virological tests confirmed that all animals had died of sheep-associated MCF. The investigation indicated that the OvHV-2 infection could have been due to the arrival of sheep in the petting zoo, with cases commencing after first lambing and subsequent shedding of virus. This was also supported by the serological retrospective study that indicated limited previous MCF virus circulation. Further MCF cases that occurred even after the removal of the domestic sheep and goats were attributed to the mouflon. This episode confirms the importance of biosecurity measures in zoos, which house MCF

  14. Historical biogeography of the strepsirhine primates of Madagascar.

    Science.gov (United States)

    Tattersall, Ian

    2006-01-01

    Lying some 400 km off the coast of southeastern Africa, Madagascar is the world's largest oceanic island. It has been in roughly the same position relative to its parent continent for 120 million years, and as a consequence its mammal fauna is unusual in composition, with a low number of major taxa but a high diversity at lower taxonomic levels. Among Madagascar's native terrestrial mammals, only the orders Primates, Rodentia, Carnivora and Insectivora are represented (plus, until recently, the enigmatic and endemic Bibymalagasia, and Artiodactyla in the form of semiaquatic pygmy hippopotamuses). This reflects the fact that terrestrial mammals are notoriously poor over-water dispersers; yet at the same time the ancestors of all of Madagascar's mammals had to have crossed a wide oceanic barrier to get to the island at various points during the Tertiary. Here I examine the palaeogeographic evidence for potential land bridge or 'stepping-stone' connections with adjacent continents from the Mesozoic through the Cenozoic, and review the fossil records and phylogenies of each of Madagascar's mammalian groups in an attempt to estimate the minimum number of crossings necessary to produce the island's current faunal composition. Probable monophyletic origins for each major group, and thus a smaller rather than a larger number of crossings of the Mozambique Channel, imply that this water barrier has acted as a powerful filter; so powerful that it is unclear whether any crossings would have been possible without some form of subaerial connection, however ephemeral, at least from time to time during the Tertiary. Clarification of how Madagascar's terrestrial mammal fauna may have originated is thus as likely to emerge from the geology of the seafloor surrounding the island as it is to come from the fossil record or from the internal and external relationships of its various components.

  15. Molecular evolution of the mitochondrial 12S rRNA in Ungulata (mammalia).

    Science.gov (United States)

    Douzery, E; Catzeflis, F M

    1995-11-01

    , but the relationships between Artiodactyla, Cetacea, and Perissodactyla remained unresolved. Nevertheless, we found no support for a Perissodactyla + Hyracoidea clade, neither with distance approach, nor with parsimony reconstruction. The 12S rRNA was useful to solve intraordinal relationships among Ungulata, but it seemed to harbor too few informative positions to decipher the bushlike radiation of some Ungulata orders, an event which has most probably occurred in a short span of time between 55 and 70 MYA.

  16. Surface Model and Tomographic Archive of Fossil Primate and Other Mammal Holotype and Paratype Specimens of the Ditsong National Museum of Natural History, Pretoria, South Africa.

    Science.gov (United States)

    Adams, Justin W; Olah, Angela; McCurry, Matthew R; Potze, Stephany

    2015-01-01

    Nearly a century of paleontological excavation and analysis from the cave deposits of the Cradle of Humankind UNESCO World Heritage Site in northeastern South Africa underlies much of our understanding of the evolutionary history of hominins, other primates and other mammal lineages in the late Pliocene and early Pleistocene of Africa. As one of few designated fossil repositories, the Plio-Pleistocene Palaeontology Section of the Ditsong National Museum of Natural History (DNMNH; the former Transvaal Museum) curates much of the mammalian faunas recovered from the fossil-rich deposits of major South African hominin-bearing localities, including the holotype and paratype specimens of many primate, carnivore, and other mammal species (Orders Primates, Carnivora, Artiodactyla, Eulipotyphla, Hyracoidea, Lagomorpha, Perissodactyla, and Proboscidea). Here we describe an open-access digital archive of high-resolution, full-color three-dimensional (3D) surface meshes of all 89 non-hominin holotype, paratype and significant mammalian specimens curated in the Plio-Pleistocene Section vault. Surface meshes were generated using a commercial surface scanner (Artec Spider, Artec Group, Luxembourg), are provided in formats that can be opened in both open-source and commercial software, and can be readily downloaded either via an online data repository (MorphoSource) or via direct request from the DNMNH. In addition to providing surface meshes for each specimen, we also provide tomographic data (both computerized tomography [CT] and microfocus [microCT]) for a subset of these fossil specimens. This archive of the DNMNH Plio-Pleistocene collections represents the first research-quality 3D datasets of African mammal fossils to be made openly available. This simultaneously provides the paleontological community with essential baseline information (e.g., updated listing and 3D record of specimens in their current state of preservation) and serves as a single resource of high

  17. Surface Model and Tomographic Archive of Fossil Primate and Other Mammal Holotype and Paratype Specimens of the Ditsong National Museum of Natural History, Pretoria, South Africa.

    Directory of Open Access Journals (Sweden)

    Justin W Adams

    Full Text Available Nearly a century of paleontological excavation and analysis from the cave deposits of the Cradle of Humankind UNESCO World Heritage Site in northeastern South Africa underlies much of our understanding of the evolutionary history of hominins, other primates and other mammal lineages in the late Pliocene and early Pleistocene of Africa. As one of few designated fossil repositories, the Plio-Pleistocene Palaeontology Section of the Ditsong National Museum of Natural History (DNMNH; the former Transvaal Museum curates much of the mammalian faunas recovered from the fossil-rich deposits of major South African hominin-bearing localities, including the holotype and paratype specimens of many primate, carnivore, and other mammal species (Orders Primates, Carnivora, Artiodactyla, Eulipotyphla, Hyracoidea, Lagomorpha, Perissodactyla, and Proboscidea. Here we describe an open-access digital archive of high-resolution, full-color three-dimensional (3D surface meshes of all 89 non-hominin holotype, paratype and significant mammalian specimens curated in the Plio-Pleistocene Section vault. Surface meshes were generated using a commercial surface scanner (Artec Spider, Artec Group, Luxembourg, are provided in formats that can be opened in both open-source and commercial software, and can be readily downloaded either via an online data repository (MorphoSource or via direct request from the DNMNH. In addition to providing surface meshes for each specimen, we also provide tomographic data (both computerized tomography [CT] and microfocus [microCT] for a subset of these fossil specimens. This archive of the DNMNH Plio-Pleistocene collections represents the first research-quality 3D datasets of African mammal fossils to be made openly available. This simultaneously provides the paleontological community with essential baseline information (e.g., updated listing and 3D record of specimens in their current state of preservation and serves as a single resource of

  18. Signatures of positive selection in Toll-like receptor (TLR genes in mammals

    Directory of Open Access Journals (Sweden)

    Areal Helena

    2011-12-01

    recognized. The analyses performed in this work encompassed a large number of species covering some of the most representative mammalian groups - Artiodactyla, Rodents, Carnivores, Lagomorphs and Primates - that are affected by different families of viruses. This might explain the role of adaptive evolution in shaping viral TLR genes.

  19. 四川一例疑似野生动物的分子鉴定%Molecular Identification of One Suspected Wildlife Residual Body in Sichuan Province

    Institute of Scientific and Technical Information of China (English)

    金辉; 李华; 刘忠诚; 雷开明; 曾涛; 涂飞云; 刘洋

    2012-01-01

    The sequence determination was made of the mitochondrial cytochrome b (cytb) gene of 1 sus- pected wildlife specimen, which came from Wenchuan County, Sichuan Province, China. The results of BLAST through NCBI website showed that this sequence ( Wenchuan 0301 ) had a great similarity to Capra hircus. In order to identify what species the undetermined specimen was, 18 species, which all were distributed in Sichuan Province, were downloaded from GenBank. The phylogenetic trees were established by using the maximum likelihood method through RAxML BlackBox. The results showed that the undetermined specimen clustered with Capra hircus first and then clustered with Capra caucasica, finally formed a sister clade with Capra sibirica. In the mean while, this sequence was exactly identical to 2 other sequences in the alignment(Genbank Accession No. :EU259127 and EU259129) ,which came from Korea Combined with the current distribution of Artiodactyla in Sichuan Provice, the undetermined specimen should belong to Capra hircus.%测定了一例来自四川汶川的疑似野生动物残体的细胞色素B基因(cytb)。利用NCBI数据库中的BLAST功能对目标序列进行相似性搜索,发现与所测序列相似性高的是偶蹄目洞角科山羊(Caprahircus);联合下载四川有分布偶蹄目野生动物4科18种cytb基因序列和我国有分布山羊、高加索山羊(Capra caucasica)和亚洲山羊(Capra sibirica)进行系统发育关系重建分析,结果显示该物种对应序列与下载的山羊序列聚成一支后与高加索山羊构成姊妹关系;同时测定的汶川序列与下载的来自韩国的两条序列(基因序列号:EU259127和EU259129)为同一单倍型。结合四川有分布偶蹄目状况,认为来自汶川的疑似野生动物残体对应物种为家养动物山羊。

  20. Influence of continental history on the ecological specialization and macroevolutionary processes in the mammalian assemblage of South America: Differences between small and large mammals

    Directory of Open Access Journals (Sweden)

    Fernández Manuel

    2008-03-01

    Full Text Available Abstract Background This paper tests Vrba's resource-use hypothesis, which predicts that generalist species have lower specialization and extinction rates than specialists, using the 879 species of South American mammals. We tested several predictions about this hypothesis using the biomic specialization index (BSI for each species, which is based on its geographical range within different climate-zones. The four predictions tested are: (1 there is a high frequency of species restricted to a single biome, which henceforth are referred to as stenobiomic species, (2 certain clades are more stenobiomic than others, (3 there is a higher proportion of biomic specialists in biomes that underwent through major expansion-contraction alternation due to the glacial-interglacial cycles, (4 certain combinations of inhabited biomes occur more frequently among species than do others. Results Our results are consistent with these predictions. (1 We found that 42 % of the species inhabit only one biome. (2 There are more generalists among species of Carnivora than in clades of herbivores. However, Artiodactyla, shows a distribution along the specialization gradient different from the one expected. (3 Biomic specialists are predominant in tropical rainforest and desert biomes. Nevertheless, we found some differences between small and large mammals in relation to these results. Stenobiomic species of micromammalian clades are more abundant in most biomes than expected by chance, while in the case of macromammalian clades stenobiomic species are more frequent than expected in tropical rainforest, tropical deciduous woodland and desert biomes only. (4 The most frequent combinations of inhabited biomes among the South American mammals are those with few biomes, i.e., the ones that suffered a higher rate of vicariance due to climatic cycles. Conclusion Our results agree with the resource-use hypothesis and, therefore, with a major role of the past climatic changes as

  1. Characterization of the bovine pregnancy-associated glycoprotein gene family – analysis of gene sequences, regulatory regions within the promoter and expression of selected genes

    Directory of Open Access Journals (Sweden)

    Walker Angela M

    2009-04-01

    Full Text Available Abstract Background The Pregnancy-associated glycoproteins (PAGs belong to a large family of aspartic peptidases expressed exclusively in the placenta of species in the Artiodactyla order. In cattle, the PAG gene family is comprised of at least 22 transcribed genes, as well as some variants. Phylogenetic analyses have shown that the PAG family segregates into 'ancient' and 'modern' groupings. Along with sequence differences between family members, there are clear distinctions in their spatio-temporal distribution and in their relative level of expression. In this report, 1 we performed an in silico analysis of the bovine genome to further characterize the PAG gene family, 2 we scrutinized proximal promoter sequences of the PAG genes to evaluate the evolution pressures operating on them and to identify putative regulatory regions, 3 we determined relative transcript abundance of selected PAGs during pregnancy and, 4 we performed preliminary characterization of the putative regulatory elements for one of the candidate PAGs, bovine (bo PAG-2. Results From our analysis of the bovine genome, we identified 18 distinct PAG genes and 14 pseudogenes. We observed that the first 500 base pairs upstream of the translational start site contained multiple regions that are conserved among all boPAGs. However, a preponderance of conserved regions, that harbor recognition sites for putative transcriptional factors (TFs, were found to be unique to the modern boPAG grouping, but not the ancient boPAGs. We gathered evidence by means of Q-PCR and screening of EST databases to show that boPAG-2 is the most abundant of all boPAG transcripts. Finally, we provided preliminary evidence for the role of ETS- and DDVL-related TFs in the regulation of the boPAG-2 gene. Conclusion PAGs represent a relatively large gene family in the bovine genome. The proximal promoter regions of these genes display differences in putative TF binding sites, likely contributing to observed

  2. The Late Pleistocene Duoi U'Oi cave in northern Vietnam: palaeontology, sedimentology, taphonomy and palaeoenvironments

    Science.gov (United States)

    Bacon, Anne-Marie; Demeter, F.; Duringer, P.; Helm, C.; Bano, M.; Vu, The Long; Kim Thuy, Nguyen Thi; Antoine, P.-O.; Thi Mai, Bui; Huong, Nguyen Thi Mai; Dodo, Y.; Chabaux, F.; Rihs, S.

    2008-08-01

    This paper describes new fossil materials recovered at the Duoi U'Oi site, in December 2003, by a Vietnamese-French-Japanese team. The Duoi U'Oi cave is located in Man Duc village, 25 km of Hoà Binh city in northern Vietnam. It belongs to a karstic network developed in a dark grey micritic marine limestone dated from the Lower to the Middle Triassic. The sedimentary fill produced a rich mammalian fauna, essentially composed of isolated teeth of middle- to large-sized mammals (Artiodactyla, Perissodactyla, Proboscidea, Carnivora, Rodentia, Primates), and characteristic of Late Pleistocene. The results of the Duoi U'Oi fieldwork are of great interest for the following reasons: (1) the biochronological age of the fauna is consistent with 230Th/ 234U/ 238U dating from the calcitic floors (66±3 ka). The Duoi U'Oi fauna is thus the oldest well-dated modern fauna known for the Southeast Asian mainland; (2) in terms of sedimentology, the analysis of the formation of the fossiliferous breccia and that of the processes of deposits shows a close relation between the karstic deposits inside the cave and the deposits in the alluvial terraces. The observation of three levels of alluvial terraces associated with three caves situated at 62, 10 and 3 m above the present alluvial plain suggests that exokarstic and endokarstic sediments evolved together; (3) in terms of palaeobiogeography, Duoi U'Oi is the continental fauna showing the strongest resemblance with the Late Pleistocene faunas from Indonesian islands (Punung, Gunung Dawung, Lida Ajer, Sibrambang and Djambu caves); this implies that, at the time of Duoi U'Oi, ca 70 ka, the Sundaland was mainly characterised by faunas of modern aspect; (4) the analysis of major taphonomic factors that led to the mammal assemblage reveals a combination of selective agents (selective role of predators and porcupines, selective destruction of age classes for some species, selective preservation of fossils due to the deposition processes in

  3. Paleocene-Eocene Thermal Maximum (PETM) and its Effects on Continental Biotas: Evidence from Polecat Bench in Northwestern Wyoming

    Science.gov (United States)

    Gingerich, P. D.

    2012-12-01

    Many important environmental events in the geological past were first recognized by their effects on the associated biota, and this is true for the Paleocene-Eocene Thermal Maximum or PETM global greenhouse warming event, which happened 55 million years before present. In the Southern Ocean, PETM carbon and oxygen isotope anomalies were found to coincide with a major terminal-Paleocene disappearance or extinction of benthic foraminiferans. On North America the PETM carbon isotope excursion (CIE) was found to coincide with mammalian dwarfing and a major initial-Eocene appearance or origination event of continental mammals. Linking the two records, marine and continental, resolved a long-standing disagreement over competing definitions of the Paleocene-Eocene epoch boundary, and more importantly indicated that the PETM greenhouse warming event was global. Dwarfing of herbivorous mammals can be interpreted as a response to elevated atmospheric CO2. The origin of modern orders of mammals including Artiodactyla, Perissodactyla, and Primates ('APP' taxa) is more complicated and difficult to explain but the origin of these orders may also be a response, directly or indirectly, to PETM warming. We now know from Polecat Bench and elsewhere in North America that the biotic response to PETM greenhouse warming involved the appearance of at least two new mammalian faunas distinct from previously known Clarkforkian mammals of the upper or late Paleocene and previously known Wasatchian mammals of the lower or early Eocene. Three stages and ages of the former are known (Cf-1 to Cf-3) and seven stages and ages of the latter are known (Wa-1 to Wa-7), each occupying about a hundred meters of strata representing a half-million years or so of time. Between the standard Clarkforkian and Wasatchian faunal zones is an initial 'Wa-M' faunal zone of only five or so meters in thickness and something on the order of 20 thousand years of geological time. The Wa-M fauna includes the first