Perspectives of endothermy revisited: The endothermic temperature range
1991; Elsevier BV; Volume: 16; Issue: 4 Linguagem: Inglês
10.1016/0306-4565(91)90025-w
ISSN1879-0992
AutoresBarry G. Lovegrove, Gerhard Heldmaier, Thomas Ruf,
Tópico(s)Animal Behavior and Reproduction
Resumo1. Theoretical predictions and verifications from the literature of various body temperature patterns in small mammals indicate (a) labile core (abdominal) temperature regulation, (b) marked skin temperature regulation (direct and indirect evidence), and (c) evidence of extra-hypopthelamic setpoint temperatures. 2. Adopting a concept of conductance and heat production optimization in terms of the range of Tas experienced daily or seasonally, the (a) low TRMRs of desert and arboreal endotherms, (b) high Tbs of birds, and (c) the absolute Tbs of all endotherms, are predirected are verified. 3. Definitions of various critical Tbs are presented whicha llow a more analytical evaluation of species-specific Tbs and intra- and interspecific Tb comparisons. Two "endothermic temperature range" statistics are proposed which quantify the range of ambient temperatures over which an endotherm can remain potentially active.
Referência(s)