| historic occurrence of the amphibian chytrid fungus batrachochytrium dendrobatidis in hellbender cryptobranchus alleganiensis populations from missouri. | the pathogenic fungus batrachochytrium dendrobatidis (bd) was recently detected in missouri hellbender cryptobranchus alleganiensis populations that have declined precipitously for unclear reasons. the objective of this study was to determine whether bd occurred historically in missouri hellbender populations or is a relatively novel occurrence. epidermal tissue was removed from 216 archived hellbenders collected from 7 missouri streams between 1896 and 1994. histological techniques and an immun ... | 2011 | 21991660 |
| characterization of the cutaneous bacterial communities of two giant salamander subspecies. | pathogens currently threaten the existence of many amphibian species. in efforts to combat global declines, researchers have characterized the amphibian cutaneous microbiome as a resource for disease management. characterization of microbial communities has become useful in studying the links between organismal health and the host microbiome. hellbender salamanders (cryptobranchus alleganiensis) provide an ideal system to explore the cutaneous microbiome as this species requires extensive conser ... | 2017 | 27677893 |
| climate change simulations predict altered biotic response in a thermally heterogeneous stream system. | climate change is predicted to increase water temperatures in many lotic systems, but little is known about how changes in air temperature affect lotic systems heavily influenced by groundwater. our objectives were to document spatial variation in temperature for spring-fed ozark streams in southern missouri usa, create a spatially explicit model of mean daily water temperature, and use downscaled climate models to predict the number of days meeting suitable stream temperature for three aquatic ... | 2014 | 25356982 |
| heavy metals, hematology, plasma chemistry, and parasites in adult hellbenders (cryptobranchus alleganiensis). | ozark (cryptobranchus alleganiensis bishopi) and eastern hellbenders (c. a. alleganiensis) from seven rivers in missouri, usa, were collected to investigate essential information on hematology, parasites, and plasma chemistry and levels of select heavy metals (hg, pb, cd, cr, and co) in the animals' blood. the body masses of ozark hellbenders were much smaller than those of eastern hellbenders. blood parasites were detected in ozark hellbenders, but not eastern hellbenders. the higher frequency ... | 2010 | 20821549 |