2003: Bergmann's rule
in shrews: geographical variation of body size in Palearctic Sorex species.
Their findings from this large dataset showed that "body size generally conformed to Bergmann's Rule
Dichroplus vittatus (Orthoptera: Acrididae) follows the converse to Bergmann's rule
although male morphological variability increases with latitude.
Conformity to Bergmann's rule
in the Plateau pika (Ochotona curzoniae Hodgson, 1857) on the Qinghai-Tibetan Plateau.
Energy and interspecific body size patterns of amphibian faunas in Europe and North America: anurans follow Bergmann's rule
, urodeles its converse.
Temperature per se may explain Bergmann's rule
in ectotherms (Atkinson & Sibly 1997, Blanckenhorn & Demont 2004), but not its converse, except when temperature operates as an indirect selective factor on body size by limiting nymphal growth and development (Masaki 1967).
Peters 1983), body size tends to directly parallel development time, and likely leads to the converse of Bergmann's Rule
that has been reported for insects.
Hence, these two species follow the converse Bergmann's Rule
, as is observed in many other terrestrial insects (Blanckenhorn & Demont 2004, Dillon et al.
Rules, as opposed to exceptions, are seen in Bergmann's rule
for the size of animal species in their northern range, and Allen's rule for the size of their extremities (Moment, 1967).
In fact, the early literature on Bergmann's rule
in both ecto- and endotherms often assumes that geographic differences in the character reflect adaptive developmental responses to local temperatures and not genetic differentiation among populations.
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.
There are numerous examples in which Bergmann's rule
appears to hold and others in which it does not (see summary in Meiri et al.