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Information Resources on the North American Opossum (Didelphis virginiana) Austad SN (1993) Retarded senescence in an insular population of Virginia opossums (Didelphis virginiana). Blumenthal EM, Kirkland GL (1976) The biology of the opossum, Didelphis virginiana, in southcentral Pennsylvania. Wright DD (1989) Mortality and dispersal of juvenile opossums, Didelphis virginiana. www.nal.usda.gov /awic/pubs/opossum.htm   (4533 words)

Digimorph - Didelphis virginiana (Opossum) This clade (Didelphis + Philander) is nested within a larger clade that includes Lutreolina, the thick-tailed opossum; Chironectes, the water opossum; and Metachirus, the brown 'four-eyed' opossum (Jansa and Voss, 2000; Voss and Jansa, 2003). Didelphis virginiana first appears in the fossil record in the Pliocene of South America and is first seen in North America during the Pleistocene, having crossed the Panamanian land bridge during the Great American Interchange (McManus, 1974). Didelphis virginiana is mostly nocturnal and occupies a variety of habitats, but prefers wet areas of its distribution (McManus, 1974). www.digimorph.org /specimens/Didelphis_virginiana   (837 words)

Abstracts - Laboratório de Vertebrados   (Site not responding. Last check: 2007-10-20) Didelphis aurita and Philander frenata overlapped somewhat, reflecting shape similarities associated with their phylogenetic affinities, while the few differences observed are probably allometric consequences of size differences. Discrimination of millipedes by the opossum Didelphis albiventris (Marsupialia, Didelphidae). Didelphis aurita and Metachirus nudicaudatus presented low densities, disappearing occasionally from the study area, and they can be characterized by the absence of permanent population center. www.biologia.ufrj.br /labs/labvert/Abstracts.htm   (11179 words)

Bioline International Official Site (site up-dated regularly) Trypanosoma cruzi in the opossum Didelphis marsupialis: Parasitological and serological follow-up of the acute infection. The transmission cycle and the heteregeneity of trypanosoma cruzi isolates derived from marsupials (Didelphis marsupialis and Philander opossum) captured in Teresopolis, Rio de Janeiro. Trypanosoma cruzi in marsupials (Didelphis marsupialis and Philander opossum) and bugs: biological and biochemical characterization of the isolates. www.bioline.org.br /request?oc99069   (2285 words)

Bioline International Official Site (site up-dated regularly) Between 1984 and 1993 the prevalence of the Trypanosoma cruzi infection in opossums (Didelphis marsupialis) was studied in Santa Catarina and Arvoredo Islands, State of Santa Catarina, Brazil. Opossums from the genus Didelphis have a wide distribution in South America, being frequently observed in close association with triatomines and human dwellings in both sylvatic and urban areas. Didelphis marsupialis, an important reservoir of Trypanosoma (Schizotrypanum) cruzi and Leishmania (Leishmania) chagasi in Colombia. www.bioline.org.br /request?oc00127   (3268 words)

The Marsupial Didelphis albiventris is an Improbable Host of Pa The Marsupial Didelphis albiventris is an Improbable Host of Pa The Marsupial Didelphis albiventris is an Improbable Host of Paracoccidioides brasiliensis in an Endemic Area of Paracoccidioidomycosis in Minas Gerais, Brazil To determine whether Didelphis albiventris is naturally infected with Paracoccidioides brasiliensis, 20 specimens of this mammal were studied by both direct cultivation of their viscera (spleen, liver and lungs) and by inoculation of Swiss mice by the intraperitoneal route with a suspension of fragments of these viscera. Didelphis marsupialis, one of the most common species, has been found to be naturally infected with Histoplasma capsulatum on several occasions (Taylor and Shaclette 1962). memorias.ioc.fiocruz.br /966/4231.html   (359 words)

Memórias do Instituto Oswaldo Cruz - The opossum Didelphis virginiana as a synanthropic reservoir of Trypanosoma cruzi ...   (Site not responding. Last check: 2007-10-20) In México, the role of mammals in the transmission cycle of Trypanosoma cruzi is poorly known. Opossums of the genus Didelphis (Marsupialia: Didelphimorphia) are considered the most important wild reservoirs of T. Wild reservoirs of Trypanosoma cruzi with special mention of the opossum, Didelphis marsupialis, and its role in the epidemiology of Chagas disease in an endemic area of Costa Rica. www.scielo.br /scielo.php?script=sci_arttext&pid=S0074-02762002000500003&lng=en&nrm=iso   (3281 words)

PAHO Online Bookstore Study of the prevalence of infection by Trypanosoma cruzi in opossums (Didelphis albiventris) in Santiago del Estero, Argentina The opossum of the genus Didelphis is one of the principal wild reservoirs of Trypanosoma cruzi and is widely distributed in the Western Hemisphere. Didelphis albiventris is the most common marsupial in Amamá and Trinidad, two communities in the province of Santiago del Estero, Argentina. publications.paho.org /english/backissues/backissues.cfm?Product_ID=474   (5058 words)

Morphologic Aspects of Tetratrichomonas didelphidis Isolated from Opossums Didelphis marsupialis and Lutreolina ... Tetratrichomonas didelphidis (Hegner and Ratcliffe, 1927) Andersen and Reilly, 1965 is a flagellate protozoan found in the intestine, cecum, and colon of Didelphis marsupialis. The parasitic protozoa used in this study was found and isolated in the intestine of opossums in Pavlova starch-containing medium in Florianópolis, State of Santa Catarina, Brazil, from D. Tetratrichomonas didelphidis is a parasitic protozoan found in the intestine, cecum and colon of the opossum Didelphis marsupialis. memorias.ioc.fiocruz.br /962/4043.html   (393 words)

ARS | Publication request: The South American Opossum, Didelphis Marsupialis, from Brazil As Another Definitive Host ...   (Site not responding. Last check: 2007-10-20) Technical Abstract: An unidentified isolate of a Sarcocystis falcatula-like parasite was obtained from the lungs of budgerigars (Melopsittacus undulatus) fed sporocysts from a naturally-infected South American opossum, Didelphis albiventris from Brazil. Four captive budgerigars fed sporocysts from the opossum intestine died of acute sarcocystosis 8, 10, and 12 days after oral linoculation (DAI); 1 budgerigar was killed 12 DAI when it was lethargic. Results of this study indicated that the South American opossum, D. albiventris, is a definitive host for yet another S. falcatula-like parasite. www.ars.usda.gov /research/publications/publications.htm?SEQ_NO_115=113426   (367 words)

[No title] Fossil remains indicate the virginia opossum lived during the Pleistocene Period, in what is referred to as the “Sangamon Interglacial Stage.” The earliest remains were found in South America. Today’s virginia opossum probably evolved from the common opossum (Didelphis marsupialis) late in the Pleistocene Period. The common opossum (Didelphis marsupialis) is found today in Central and South America. www.cnr.umn.edu /fwcb/courses/fw8576/1marsupials_DL.doc   (786 words)

IngentaConnect Winter energetics of Virginia opossums Didelphis virginiana and i...   (Site not responding. Last check: 2007-10-20) IngentaConnect Winter energetics of Virginia opossums Didelphis virginiana and i... While climatic limitations are widely recognized as primary factors determining the distributions of many species, the physiological link between climate and species’ persistence is poorly understood. The Virginia opossum Didelphis virginiana is a species for which winter energetics have been evaluated and a northern geographical limit has been hypothesized. www.ingentaconnect.com /content/mksg/eco/2005/00000028/00000006/art00003   (310 words)

Ask an Expert: Didelphis uterus In general, uterine didelphys is a duplication of both the cervix and the uterus. It is caused by failure of fusion between the right and left sides of the uterus and cervix during development. Uterine didelphys can effect fertility and the course of a pregnancy but many women with this condition can have children. www.netwellness.org /question.cfm/9021.htm   (228 words)

ARS | Publication request: Characterization of Sarcocystis Falcatula Isolates from the Argentinian Opossum, Didelphis ...   (Site not responding. Last check: 2007-10-20) Scientists at the Beltsville Agricultural Research Center and a University in La Plata, Argentina provide conclusive evidence that S. falcatula is found in Argentina and that the Argentinian opossum, Didelphis albiventris, is another definitive host for it. Technical Abstract: Two isolates of Sarcocystis falcatula were obtained from the lungs of budgerigars (Melopsittacus undulatus) fed sporocysts from two naturally-infected South American opossums (Didelphis albiventris). Thus, South American opossum, D. albiventris, is a definitive host for S. falcatula. www.ars.usda.gov /research/publications/publications.htm?SEQ_NO_115=109801   (221 words)

Comparative Mammalian Brain Collections: Gamba (Didelphis albiventris)   (Site not responding. Last check: 2007-10-20) The head and body length of Didelphis albiventris is 325-500 mm with tail length ranging from 255-535 mm. Coloration varies from gray, fl, reddish or rarely, white and unique to Didelphis, white guard hairs. The basal tenth of the tail is furred with the remainder almost naked. brainmuseum.org /Specimens/marsupalia/gamba   (208 words)

Genus Didelphis - Large American Opossums They are not particularly territorial; males may stay only 1 night per nest, though females may spend up to 5 nights in one nest. They are more aggressive than the Didelphis virginiana opossum. Rather than "playing dead", when threatened they hiss, rock side-to-side and may spray urine and feces. www.knowyoursto.com /didelphidae/didelphis.html   (821 words)

(Didelphis, Mammalia) Cell functions - Reproduction and Genetics - Mitosis and Cytokinesis - Animal Cell - (Didelphis, Mammalia) Because they have relatively few chromosomes, the cells of the rat kangaroo are well suited for studying mitosis. For further films please search the IWF media catalogue for "cell biology". www.cells.de /cellseng/1medienarchiv/Zellfunktionen/Fortpfl_u_Genetik_/Mitose_u_Cytokinese/Tierische_Zelle/Beutelratte/index.jsp   (281 words)

Positions of the National Opossum Society The National Opossum Society exists for the benefit and improvement in care of the Didelphis genus, particularly Didelphis virginiana and Didelphis marsupialis. Within institutions such as universities where opossums are kept captive for research projects of questionable value, they are rarely given the most basic care they require to live healthy lives. The National Opossum Society supports clinical research that strives to improve the health of the Didelphis genus or the individual opossum. www.opossum.org /position.htm   (623 words)

Find in a Library: The brain of the opossum (Didelphis marsupialis); a cytoarchitectonic atlas in stereotaxic ... The brain of the opossum (Didelphis marsupialis); a cytoarchitectonic atlas in stereotaxic coordinates To find this item in a library, enter a postal code, state, province, or country in the field above. WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries. www.worldcatlibraries.org /wcpa/oclc/60087   (92 words)

Amazon.com: Development of the digestive system in the North American opossum (Didelphis virginiana) (Advances in ...   (Site not responding. Last check: 2007-10-20) Amazon.com: Development of the digestive system in the North American opossum (Didelphis virginiana) (Advances in anatomy, embryology, and cell biology): Books: William J Krause This item is not eligible for Amazon Prime, but over a million other items are. I own the rights to this title and would like to make it available again through Amazon. www.amazon.com /exec/obidos/tg/detail/-/3540551492?v=glance   (313 words)

Functional analysis of DM64, an antimyotoxic protein with immunoglobulin-like structure from Didelphis marsupialis ...   (Site not responding. Last check: 2007-10-20) Functional analysis of DM64, an antimyotoxic protein with immunoglobulin-like structure from Didelphis marsupialis serum -- Rocha et al. Functional analysis of DM64, an antimyotoxic protein with immunoglobulin-like structure from Didelphis marsupialis serum Keywords: Didelphis marsupialis; inhibitor; myotoxin; phospholipase; snake venom. content.febsjournal.org /cgi/content/abstract/269/24/6052   (385 words)

Pediatric Radiology Case : Pedrad :: Uterus didelphis -- The Pediatric Radiology teaching case collection   (Site not responding. Last check: 2007-10-20) Uterus, didelphis, bicornate, uterus didelphis, uterus bicornis, bicornate uterus, vaginal septum, incomplete fusion, mueller duct, child, childhood, pediatric radiology I'm a Junior at Jordan High School in North Carolina and I attend a College Course at Duke University called HPREP. We are to research topics of interest, about medical abnormalties I have choosing this topic (Uterus Didelphis) and would like to receive more information on the matter. www.pedrad.info /?search=20021010131153   (541 words)

Virginia opossum, Didelphis virginiana (Didelphimorpha: Didelphidae) @ Forestry Images   (Site not responding. Last check: 2007-10-20) Virginia opossum, Didelphis virginiana (Didelphimorpha: Didelphidae) @ Forestry Images Mammalia > Didelphimorpha > Didelphidae > Didelphis virginiana Kerr, 1792 Forestry Images is a joint project of The Bugwood Network and USDA Forest Service. www.forestryimages.org /browse/subimages.cfm?sub=3913   (78 words)

* Virginian Opossum (Didelphis virginiana ) *: The Virginia Opossum   (Site not responding. Last check: 2007-10-20) * Virginian Opossum (Didelphis virginiana) *: The Virginia Opossum Classification Kingdom Animalia, Phylum Chordata, Class Mammalia, Subclass Metatheria (marsupials), Order Didelphimorphia (opossums), Family Didelphidae, Genus Didelphis, species virginiana The only North American marsupial, the Virginia opossum, often referred to simply as a "possum." These are large as opossums go and are nocturnal. mammaliadidephisvirginiana.blogspot.com /2004/12/virginia-opossum.html   (1446 words)

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