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Trait differences among discrete morphs of a color polymorphic lizard, Podarcis erhardii

Kinsey M. Brock, Simon Baeckens (UGent) , Colin M. Donihue, Jose Martin, Panayiotis Pafilis and Danielle L. Edwards
(2020) PEERJ. 8.
Author
Organization
Abstract
Color polymorphism defies evolutionary expectations as striking phenotypic variation is maintained within a single species. Color and other traits mediate social interactions, and stable polymorphism within a population is hypothesized to be related to correlational selection of other phenotypic traits among color morphs. Here, we report on a previously unknown throat color polymorphism in the Aegean Wall Lizard (Podarcis erhardii) and examine morph-correlated differences in traits important to social behavior and communication: maximum bite force capacity and chemical signal profile. We find that both sexes of P. erhardii have three color morphs: orange, yellow, and white. Moreover, orange males are significantly larger and tend to bite harder than yellow and white males. Although the established color polymorphism only partially matches the observed intraspecific variation in chemical signal signatures, the chemical profile of the secretions of orange males is significantly divergent from that of white males. Our findings suggest that morph colors are related to differences in traits that are crucial for social interactions and competitive ability, illustrating the need to look beyond color when studying polymorphism evolution.
Keywords
COMMON WALL LIZARDS, FEMORAL GLAND SECRETIONS, BITE-FORCE, SEXUAL-DIMORPHISM, TREE LIZARDS, THROAT COLOR, HEAD SIZE, CHEMICAL, POLYMORPHISM, DIVERGENCE HYPOTHESIS, PARASITE LOAD, Color polymorphism, Bite force, Chemical signals, Lizard, Traits, Podarcis erhardii

Citation

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MLA
Brock, Kinsey M., et al. “Trait Differences among Discrete Morphs of a Color Polymorphic Lizard, Podarcis Erhardii.” PEERJ, vol. 8, 2020, doi:10.7717/peerj.10284.
APA
Brock, K. M., Baeckens, S., Donihue, C. M., Martin, J., Pafilis, P., & Edwards, D. L. (2020). Trait differences among discrete morphs of a color polymorphic lizard, Podarcis erhardii. PEERJ, 8. https://doi.org/10.7717/peerj.10284
Chicago author-date
Brock, Kinsey M., Simon Baeckens, Colin M. Donihue, Jose Martin, Panayiotis Pafilis, and Danielle L. Edwards. 2020. “Trait Differences among Discrete Morphs of a Color Polymorphic Lizard, Podarcis Erhardii.” PEERJ 8. https://doi.org/10.7717/peerj.10284.
Chicago author-date (all authors)
Brock, Kinsey M., Simon Baeckens, Colin M. Donihue, Jose Martin, Panayiotis Pafilis, and Danielle L. Edwards. 2020. “Trait Differences among Discrete Morphs of a Color Polymorphic Lizard, Podarcis Erhardii.” PEERJ 8. doi:10.7717/peerj.10284.
Vancouver
1.
Brock KM, Baeckens S, Donihue CM, Martin J, Pafilis P, Edwards DL. Trait differences among discrete morphs of a color polymorphic lizard, Podarcis erhardii. PEERJ. 2020;8.
IEEE
[1]
K. M. Brock, S. Baeckens, C. M. Donihue, J. Martin, P. Pafilis, and D. L. Edwards, “Trait differences among discrete morphs of a color polymorphic lizard, Podarcis erhardii,” PEERJ, vol. 8, 2020.
@article{8740495,
  abstract     = {{Color polymorphism defies evolutionary expectations as striking phenotypic variation is maintained within a single species. Color and other traits mediate social interactions, and stable polymorphism within a population is hypothesized to be related to correlational selection of other phenotypic traits among color morphs. Here, we report on a previously unknown throat color polymorphism in the Aegean Wall Lizard (Podarcis erhardii) and examine morph-correlated differences in traits important to social behavior and communication: maximum bite force capacity and chemical signal profile. We find that both sexes of P. erhardii have three color morphs: orange, yellow, and white. Moreover, orange males are significantly larger and tend to bite harder than yellow and white males. Although the established color polymorphism only partially matches the observed intraspecific variation in chemical signal signatures, the chemical profile of the secretions of orange males is significantly divergent from that of white males. Our findings suggest that morph colors are related to differences in traits that are crucial for social interactions and competitive ability, illustrating the need to look beyond color when studying polymorphism evolution.}},
  articleno    = {{e10284}},
  author       = {{Brock, Kinsey M. and Baeckens, Simon and Donihue, Colin M. and Martin, Jose and Pafilis, Panayiotis and Edwards, Danielle L.}},
  issn         = {{2167-8359}},
  journal      = {{PEERJ}},
  keywords     = {{COMMON WALL LIZARDS,FEMORAL GLAND SECRETIONS,BITE-FORCE,SEXUAL-DIMORPHISM,TREE LIZARDS,THROAT COLOR,HEAD SIZE,CHEMICAL,POLYMORPHISM,DIVERGENCE HYPOTHESIS,PARASITE LOAD,Color polymorphism,Bite force,Chemical signals,Lizard,Traits,Podarcis erhardii}},
  language     = {{eng}},
  pages        = {{29}},
  title        = {{Trait differences among discrete morphs of a color polymorphic lizard, Podarcis erhardii}},
  url          = {{http://doi.org/10.7717/peerj.10284}},
  volume       = {{8}},
  year         = {{2020}},
}
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