| seroepidemiology of toxoplasma gondii in zoo animals in selected zoos in the midwestern united states. | toxoplasma gondii infections in zoo animals are of interest because many captive animals die of clinical toxoplasmosis and because of the potential risk of exposure of children and elderly to t. gondii oocysts excreted by cats in the zoos. seroprevalence of t. gondii antibodies in wild zoo felids, highly susceptible zoo species, and feral cats from 8 zoos of the midwestern united states was determined by using the modified agglutination test (mat). a titer of 1:25 was considered indicative of t. ... | 2008 | 18605803 |
| ranavirus infection of free-ranging and captive box turtles and tortoises in the united states. | iridoviruses of the genus ranavirus are well known for causing mass mortality events of fish and amphibians with sporadic reports of infection in reptiles. this article describes five instances of ranavirus infection in chelonians between 2003 and 2005 in georgia, florida, new york, and pennsylvania, usa. affected species included captive burmese star tortoises (geochelone platynota), a free-ranging gopher tortoise (gopherus polyphemus), free-ranging eastern box turtles (terrapene carolina carol ... | 2008 | 18957641 |
| constraints on temperature-dependent sex determination in the leopard gecko (eublepharis macularius): response to kratochvil et al. | kratochvil et al. (naturwissenschaften 95:209-215, 2008) reported recently that in the leopard gecko (eublepharis macularius) of the family eublepharidae with temperature-dependent sex determination (tsd), clutches in which eggs were incubated at the same temperature produce only same-sex siblings. interpreting this result in light of studies of sex steroid hormone involvement in sex determination, they suggested that maternally derived yolk steroid hormones could constrain sex-determining mecha ... | 2008 | 18690420 |
| experimental exposure of adult san marcos salamanders and larval leopard frogs to the cercariae of centrocestus formosanus. | the gill parasite centrocestus formosanus (trematoda: heterophyidae) is an exotic parasite of concern in texas because it has been shown to infect multiple threatened and endangered fish species. the purpose of this study was to determine if c. formosanus could present a threat to larval anurans, as well as threatened neotenic salamanders endemic to the spring-fed systems of texas. we exposed adults of the san marcos salamander eurycea nana (caudata: plethodontidae) and tadpoles of the rio grand ... | 2014 | 24303882 |