Size constraints and the evolution of display complexity: Why do large lizards have simple displays?
Biological Journal of the Linnean Society, ISSN: 0024-4066, Vol: 76, Issue: 1, Page: 145-161
2002
- 28Citations
- 115Captures
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Article Description
Social, environmental, and perceptual factors have been suggested to account for the evolution of visual signal diversity in lizards. Previous investigations have inferred that signal complexity may also be related to body size. In this study, we use three complementary comparative analyses to investigate whether body size has influenced macroevolutionary trends in display modifier repertoire size for 110 species of iguanian lizards. We found evidence that signal complexity, as measured by repertoire size, is negatively associated with body size. However, this relationship was not strictly linear. Rather, body size seems to impose a threshold on signal evolution. Specifically, the evolution of large repertoire size appears to be less likely above a particular size threshold, which results in large-bodied lizards having a significantly lower probability of evolving elaborate displays. This relationship may reflect the influence of body size on resource use and the emergent social dynamics it promotes. Large lizards tend to be herbivorous and typically do not defend foraging patches. Consistent with this hypothesis is the previously reported finding of a similar size threshold dividing herbivorous from insectivorous lizards. We suggest to fully understand the evolutionary processes acting on communicative systems, it is important that we identify both the selective forces involved and the nature of their influence. © 2002 The Linnean Society of London.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0036585597&origin=inward; http://dx.doi.org/10.1046/j.1095-8312.2002.00058.x; http://doi.wiley.com/10.1046/j.1095-8312.2002.00058.x; http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1095-8312.2002.00058.x; https://dx.doi.org/10.1046/j.1095-8312.2002.00058.x; https://academic.oup.com/biolinnean/article-abstract/76/1/145/2639791?redirectedFrom=fulltext
Oxford University Press (OUP)
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