Fall 2017 Biology Seminar Series: Catherine Bevier
Biology Professor Douglas Woodhams will be bringing in guest speaker Catherine Bevier from Colby College. Her talk title is "Assessing Mechanisms of Disease Resistance in Green Frogs and Mink Frogs."
The discussion abstract is as follows:
"Global decline and extinction of amphibian populations have been attributed in large part to emerging infectious diseases such as chytridiomycosis caused by the chytrid fungus, Batrachochytrium dendrobatidis (Bd). Not all frog populations are at risk of this disease, and many species, including Green Frogs (Lithobates clamitans) and Mink Frogs (L. septentrionalis), are carriers and remain seemingly unaffected by infection. This resistance may be related to extrinsic factors of a frog’s environment, the pathogen itself, or is an inherent character of the frog’s immune system. Antimicrobial peptides (AMPs) produced in frog skin secretions and metabolites produced by beneficial bacteria in a frog’s skin microbiome offer intrinsic protection against pathogens and are extremely variable among frog species. In this seminar, I will report on results from surveys and experiments that investigate mechanisms of disease resistance in these two ranid frogs, including an isolated island population of Green Frogs. Results suggest that bacterial metabolites are highly effective and may work in complement with skin secretions to fight pathogenic infections in amphibians. Importantly, however, differences in environmental quality, morphology, and behavior among populations likely exist and should be explored given the implications for susceptibility to infectious diseases."
For disability-related accommodations, including dietary accommodations, please visit www.ada.umb.edu two weeks prior to the event.