Tail Length and Sexual Size Dimorphism (SSD) in Desmognathan Salamanders
作者： Kristin A. Bakkegard , Rebecca A. Rhea
DOI: 10.1670/10-307
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摘要: Abstract Tails serve multiple functions in salamanders: energy storage, courtship, antipredator defense, and respiration. Differences life history strategies between males females may generate sexual size dimorphism (SSD) tail length. However, the contribution of length to SSD is relatively unstudied. Because basal member desmognathan salamander Phaeognathus hubrichti shows dimensions (females have long, thin tails compared shorter, thicker males), we hypothesized that other desmognathans follow same pattern. We took standard morphological measurements, aged, sexed 342 Desmognathus quadramaculatus (the largest species Desmognathus) 244 aeneus (one smallest species) determine whether followed pattern as P. hubrichti. Neither showed trends were opposite directions. Males both had significantly wider diameters than th...
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