Polar Bear (Ursus maritimus) Life History and Population Dynamics in a Changing Climate


Prey availability influences the ontogeny and timing of chemoreception-based prey shifting in the striped crayfish snake, Regina alleni

Striped crayfish snakes (Regina alleni) undergo a dietary shift from dragonfly larvae to crayfish during ontogeny. Godley (1980) suggested that this shift is attributable to crayfish availability rather than an initial preference for dragonfly larvae. We experimentally tested this hypothesis by measuring the chemosensory response of newborn snakes to prey odors at 2 ages and […]