TitleBEHAVIORAL VARIATION IN NATURAL-POPULATIONS .7. MATERNAL BODY-TEMPERATURE DOES NOT AFFECT JUVENILE THERMOREGULATION IN A GARTER SNAKE
Publication TypeJournal Article
Year of Publication1995
AuthorsArnold, SJ, Peterson, CR, Gladstone, J
JournalAnimal Behaviour
Volume50
Pagination623-633
Keywordsenvironmental sex determination incubation-temperature thamnophis-sirtalis sauria-iguanidae locomotor performance selection evolution reptiles display term
Abstract

This study was aimed to determine whether thermoregulation by juvenile garter snakes is affected by developmental temperature imposed by their mothers during pregnancy. Maternal temperature treatments were created by maintaining six groups of females at six different constant temperatures (24-32 degrees C) during pregnancy. A seventh group of females was allowed to thermoregulate during pregnancy. The body temperatures of juveniles (N=324) on thermal gradients were monitored in the morning and afternoon for 5 consecutive days, beginning 5 days after birth. The body temperatures of juveniles were consistent, apparently heritable and remarkably stereotyped. Juvenile body temperature was virtually unaffected by maternal temperature treatment. (C) 1995 The Association for the Study of Animal Behaviour