| efficacy of fenbendazole and levamisole treatments in captive houston toads (bufo [anaxyrus] houstonensis). | effective disease monitoring and prevention is critical to the success of captive amphibian care. nematodes, including the genera rhabdias and strongyloides, are known to contribute to mortality in captive amphibians and have been identified in the houston zoo's endangered houston toad (bufo [anaxyrus] houstonensis) captive assurance colony. five years of fecal data for the toad colony were compiled and analyzed in order to investigate the efficacy of two anthelminthic medications, fenbendazole ... | 2014 | 25314823 |
| potential component allee effects and their impact on wetland management in the conservation of endangered anurans. | effective management of wetland quantity and quality is crucial for effective conservation of declining amphibian populations. in particular, frogs and toads that employ aggregative breeding strategies may suffer negative population impacts in response to changes in availability of aquatic breeding habitat, including overabundance of suitable habitat, if density of conspecifics attending aggregations is positively correlated with reproductive success. here we document such a positive relationshi ... | 2010 | 20404930 |
| a geographic information system approach to evaluating the effects of the endangered species protection program on mosquito control. | the purpose of this study was to assess what impacts on organized mosquito control the implementation of an endangered species protection program for the houston toad might have in chambers and harris counties, texas. the study was also intended to demonstrate the value of using geographic information system (gis) techniques and methodologies in making such assessments to those in mosquito control who are unfamiliar with gis and its applications. using the gis, geographical analysis support syst ... | 1998 | 9673913 |
| chlamydia pneumoniae polioencephalomyelitis and ganglionitis in captive houston toads (anaxyrus houstonensis). | chlamydia pneumoniae is a ubiquitous pathogen causing disease in humans, mammals, birds, reptiles, and amphibians. since 2012, c. pneumoniae infection has caused neurologic disease and mortality in a breeding colony of endangered houston toads (anaxyrus houstonensis) at the houston zoo. the purpose of this report is to present the histopathologic and ultrastructural characteristics of c. pneumoniae infection in houston toads. fourteen cases were evaluated by histopathology and 1 case was evaluat ... | 2019 | 31221032 |
| evaluating the effects of red imported fire ants (solenopsis invicta) on juvenile houston toads (bufo [=anaxyrus] houstonensis) in colorado county, tx. | the spread of invasive species is considered a major threat to biodiversity, second only to habitat loss. red imported fire ants (solenopsis invicta) are a globally invasive species with negative impacts reported on native invertebrate and vertebrate species. federally endangered houston toads (bufo [=anaxyrus] houstonensis), endemic to texas, are among the vertebrates reportedly negatively impacted by red imported fire ants (rifa). threats posed by rifa to houston toads needed to be explicitly ... | 2020 | 32095338 |