Evolutionary drivers of sexual signal variation in Amazon Slender Anoles

Autor(es)

Prates, Ivan ^{[1, 2, 3]} ; D'Angiolella, Annelise B. ^[4] ; Rodrigues, Miguel T. ^[5] ; Melo-Sampaio, Paulo R. ^[6] ; de Queiroz, Kevin ^[1] ; Bell, Rayna C. ^{[1, 7]}

Afiliação do(s) autor(es)

^[1] Smithsonian Inst, Dept Vertebrate Zool, Natl Museum Nat Hist, Washington, DC 20560 - USA

^[2] Univ Michigan, Dept Ecol & Evolutionary Biol, Ann Arbor, MI 48109 - USA

^[3] Univ Michigan, Museum Zool, Ann Arbor, MI 48109 - USA

^[4] Univ Fed Rural Amazonia Campus Capitao Poco, Capitao Poco, Para - Brazil

^[5] Univ Sao Paulo, Inst Biociencias, Dept Zool, Sao Paulo, SP - Brazil

^[6] Univ Fed Rio De Janeiro, Dept Vertebrados, Museu Nacl, Rio De Janeiro - Brazil

^[7] Calif Acad Sci, Herpetol Dept, San Francisco, CA 94118 - USA

• Tipo de documento: Artigo Científico
• Fonte: Evolution; v. 75, n. 6, p. 1361-1376, JUN 2021.
• Citações Web of Science: 0

Resumo

Phenotypic variation among populations, as seen in the signaling traits of many species, provides an opportunity to test whether similar factors generate repeated phenotypic patterns in different parts of a species' range. We investigated whether genetic divergence, abiotic gradients, and sympatry with closely related species explain variation in the dewlap colors of Amazon Slender Anoles, Anolis fuscoauratus. To this aim, we characterized dewlap diversity in the field with respect to population genetic structure and evolutionary relationships, assessed whether dewlap phenotypes are associated with climate or landscape variables, and tested for nonrandom associations in the distributions of A. fuscoauratus phenotypes and sympatric Anolis species. We found that dewlap colors vary among but not within sites in A. fuscoauratus. Regional genetic clusters included multiple phenotypes, while populations with similar dewlaps were often distantly related. Phenotypes did not segregate in environmental space, providing no support for optimized signal transmission at a local scale. Instead, we found a negative association between certain phenotypes and sympatric Anolis species with similar dewlap color attributes, suggesting that interactions with closely related species promoted dewlap divergence among A. fuscoauratus populations. Amazon Slender Anoles emerge as a promising system to address questions about parallel trait evolution and the contribution of signaling traits to speciation. (AU)

• Processo FAPESP: 11/50146-6 - Filogeografia comparada, filogenia, modelagem paleoclimática e taxonomia de répteis e anfíbios neotropicais
• Beneficiário: Miguel Trefaut Urbano Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 03/10335-8 - Sistemática e evolução da herpetofauna neotropical
• Beneficiário: Miguel Trefaut Urbano Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/50297-0 - Dimensions US-BIOTA São Paulo: integrando disciplinas para a predição da biodiversidade da Floresta Atlântica no Brasil
• Beneficiário: Cristina Yumi Miyaki
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático