Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Life Sciences
Updated And New Amphibian And Reptile Records From Clark County, Illinois [Abstract], C. Drew Foster, Stephen J. Mullin
Updated And New Amphibian And Reptile Records From Clark County, Illinois [Abstract], C. Drew Foster, Stephen J. Mullin
Faculty Publications
No abstract provided.
Population Responses Of Wood Frog (Rana Sylvatica) Tadpoles To Overwintered Bullfrog (Rana Catesbeiana) Tadpoles, Leroy J. Walston, Stephen J. Mullin
Population Responses Of Wood Frog (Rana Sylvatica) Tadpoles To Overwintered Bullfrog (Rana Catesbeiana) Tadpoles, Leroy J. Walston, Stephen J. Mullin
Faculty Publications
A fundamental goal in ecology is to understand how environmental variation influences the distribution of individuals within a population. In this study, we used laboratory experiments to examine the population responses of sympatric Wood Frog (Rana sylvatica) tadpoles to native overwintered Bullfrog (Rana catesbeiana) tadpoles. For periods of up to two weeks, we measured growth, activity, and refuge use of Wood Frog tadpoles in small mesocosms with and without an overwintered Bullfrog tadpole present. Bullfrog tadpoles had a negative effect on the growth of Wood Frog tadpoles allotopic (naive) to Bullfrogs, whereas the presence of Bullfrogs had no effect on …