Relationships between Female Density and Sexual Size Dimorphism in Samples of Anolis sagrei

  • Stamps J
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Abstract

mples of Anolis sagrei. A positive relationship between SSDavg and female density is predicted by the "territory defense hypothesis," under the assumption that indi- vidual males more easily defend multiple females when females are closely spaced than when they are widely scattered. However, contra this assumption, male A. sagrei sexual size dimorphism as measured by asymptotic size (SSDas) and female density. The current study asks whether a comparable relationship exists between sexual size dimorphism as measured by average size (SSDavg) and female density across 25 A recent comparative study of anoles revealed a positive relationship between adjusted their territory sizes in relation to female density, defending relatively larger territories when females were widely scattered than when they were closely spaced. In turn, there was no indication of a relationship between sexual size dimorphism and female density among the samples of A. sagrei in this study. In most of the samples, male size distributions were skewed in favor of larger males than predicted by null growth-based adult males, as compared to females of the same ages.

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Authors

  • J.a. Stamps

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