First records of increased plasma glucose levels in adults of Pleurodema thaul (Lesson, 1826) (Anura: Leptodactylidae) subjected to cold stress

Abstract

This study analyzed the synthesis of glucose in Pleurodema thaul exposed to cold thermal stress as an antifreezing molecule. The plasma glucose concentrations were measured using a glucose meter Accu-Chek Active and a commercial kit. The results showed signifi cant increase of plasma glucose in individuals under the cold thermal stress, indicating that glucose have a function as antifreeze mechanism in this species.