Vania Regina Assis

TL;DR: It is shown that for R. icterica restraint for 24h proved to be a stressful condition, increasing CORT by 3-fold without consistent immunological changes, but the application of a more intense stressor (restraint with movement restriction), for the same period, potentiated this response resulting in a 9-fold increase in CORT.

TL;DR: Results showed a pattern of co-variation between CORT and T across the breeding season of Hypsiboas faber, a large and territorial Neotropical treefrog, and individuals with higher steroid levels, mainly T, showed higher responsivity to social stimulation by other males in the chorus.

TL;DR: Newly captured Brazilian toads were subjected to a daily transdermal application of corticosterone or vehicle for 30 consecutive days, revealing a decrease in T and BKA associated with the time in captivity, suggesting that captivity may be a chronic stressor for these toads.

TL;DR: The estimation of ACP by spectrophotometry provides a convenient and accurate method for evaluating innate immunocompetence in comparative and ecophysiological studies of anuran amphibians.

TL;DR: Investigation of captivity-associated stress effects on plasma corticosterone and testosterone levels, body index, and innate immunity in toads shows steroids-immunity inter-relationships arising from prolonged exposure to a stressor in toad are highly dependent on body condition.