Within terrestrial systems endotherms displayed larger trophic breadths and smaller vulnerability values than ectotherms
on the same trophic level (Fig.
The role of behavior in temperature acclimation and tolerance in ectotherms
Temperature variation makes ectotherms
more sensitive to climate change.
Size-fecundity relationships, growth trajectories, and the temperature-size rule for ectotherms
Studies have shown that ectotherms
subject to high temperatures, but within the normal range they experience in the field, suffer denaturation of cellular proteins (Hofmann & Somero 1995); replacing these proteins requires energy that must be diverted from other tasks including, perhaps, maintaining the structures required for limb extension and retraction.
1997b), and other ectotherms
(Salt 1965, Bale 1987, Bale et al.
Behavioral implications of mechanistic ecology: thermal and behavioral modeling of desert ectotherms
and their microenvironment.
Thus, we use natural variation in climate modes related to the Pacific Northwest to test whether these modes will have an impact on the life history of terrestrial ectotherms
, in particular reptiles.
However, the study of ectothermic vertebrates might provide a fruitful alternative for such studies, providing a system where one can potentially separate the consequences of altering metabolism and body temperature, since these two functions are not as intricately intertwined in ectotherms
as they are in endotherms.
Clinal variation in body and cell size in a widely distributed vertebrate ectotherm
p] constrain the metabolic type of the consumer and predator (endotherm, vertebrate ectotherm
, and invertebrate ectotherm
), where the maximum value of y is 1.
b]) selected by an ectotherm
to the available thermal environment and the preferred body temperature range of the animal in a thermal gradient.