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Effect of Temperature on Jump Performance of the Frog Limnodynastes tasmaniensis

Jump performance in the frog Limnodynastes tasmaniensis was measured over body temperature range (Tb) of 2° to 37° C after acclimation at 9° and 30° C. Horizontal jump performance increased linearly with Tb between 7° and 30° C but declined markedly outside this range. There was no performance "plateau" over which jump distance was relatively temperature-independent. The scale of the thermal response (Q10 = 1.56) was similar to temperature effects on locomotor performance in other amphibians and reptiles. Acclimation regime did not significantly influence jump distance within the range of Tb at which L. tasmaniensis is normally active. The optimal performance temperature, between 30° and 33° C, was avoided in a thermal gradient. None of the descriptors of thermal sensitivity examined (optimal temperature, optimum performance breadth, preferred temperature, and acclimation response) correlates with the observed thermal niche of L. tasmaniensis. Successful exploitation of temporally variable thermal environments by anurans need not be associated with temperature independence of locomotor performance around ecologically relevant Tb.