Event Title
Lack of Effect of Dehydration on Cutaneous Resistance to Evaporative Water Loss in Green Tree Frogs
Faculty Mentor
Mark Wygoda
Location
Memorial Gym
Start Date
20-4-2012 2:30 PM
End Date
20-4-2012 3:30 PM
Description
This study aimed to determine whether dehydration causes increased cutaneous resistance to evaporative water loss (EWL) in Hyla cinerea. Total resistance was determined by measuring EWL and body temperature of 10 animals at varying hydration states using a wind tunnel measuring system. Boundary layer resistance was determined using agar replicas. Hydration state had no effect on cutaneous resistance. Based on evidence of increased ventral skin blood flow, circulating levels of arginine vasotocin and angiotensin II likely were elevated. Thus, water loss reduction appears not to be controlled by the same factors that govern the rate of water uptake.
Lack of Effect of Dehydration on Cutaneous Resistance to Evaporative Water Loss in Green Tree Frogs
Memorial Gym
This study aimed to determine whether dehydration causes increased cutaneous resistance to evaporative water loss (EWL) in Hyla cinerea. Total resistance was determined by measuring EWL and body temperature of 10 animals at varying hydration states using a wind tunnel measuring system. Boundary layer resistance was determined using agar replicas. Hydration state had no effect on cutaneous resistance. Based on evidence of increased ventral skin blood flow, circulating levels of arginine vasotocin and angiotensin II likely were elevated. Thus, water loss reduction appears not to be controlled by the same factors that govern the rate of water uptake.