Bergmann's rule

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Related to Bergmann's rule: Gloger's rule

Berg·mann's rule

The principle that in wide-ranging, warm-blooded animal species, individuals living in a cold climate tend to be larger than individuals of that same species living in a warm climate.

[After Carl Bergmann (1814-1865), German biologist.]
References in periodicals archive ?
Dichroplus vittatus (Orthoptera: Acrididae) follows the converse to Bergmann's rule although male morphological variability increases with latitude.
With respect to Bergmann's rule, it is clear that L.
The generality of Bergmann's rule has been disputed (Meiri et al.
Patterns of within-species body size variation of birds: strong evidence for Bergmann's rule.
Their findings from this large dataset showed that "body size generally conformed to Bergmann's Rule.
Bergmann's Rule generally holds true for whitetail deer.
Heftier animals have a smaller surface area-to-volume ratio, which helps reduce heat loss - a pattern known as Bergmann's Rule.
While Bergmann's Rule explains how animals deal with issues of heat loss and heat regulation in the cold, there may be other reasons to pack more pounds in colder climates.
For example, on the basis of Bergmann's rule (below), Van Bushirk et al.
There is a general principle, called Bergmann's Rule, that suggests animals tend to increase their body size in colder environments," Discovery News quoted co-author Xiaoming Wang, as saying.
Washington, Feb 25 (ANI): Scientists have across new clues that offers new insight to Bergmann's rule that animals grow larger at high, cold latitudes than their counterparts closer to the equator.
The temperature-size rule, also known as Bergmann's rule, says that species size increases with latitude: they tend to be smaller in the tropics, and larger closer to the poles.