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Body Size Evolution in Insular Speckled Rattlesnakes (Viperidae: Crotalus mitchellii)

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Meik, Jesse M, Lawing, A Michelle, and Pires-daSilva, Andre, Body Size Evolution in Insular Speckled Rattlesnakes (Viperidae: Crotalus mitchellii): .

Summary

Speckled rattlesnakes (Crotalus mitchellii) inhabit multiple islands off the coast of Baja California, Mexico. Two of the 14 known insular populations have been recognized as subspecies based primarily on body size divergence from putative mainland ancestral populations; however, a survey of body size variation from other islands occupied by these snakes has not been previously reported. We examined body size variation between island and mainland speckled rattlesnakes, and the relationship between body size and various island physical variables among 12 island populations. We also examined relative head size among giant, dwarfed, and mainland speckled rattlesnakes to determine whether allometric differences conformed to predictions [...]

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:12:57 MDT 2012

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Title Citation Body Size Evolution in Insular Speckled Rattlesnakes (Viperidae: Crotalus mitchellii)

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