cology and behavior predict an evolutionary trade-off between song complexity and elaborate plumages in antwrens (Aves, Thamnophilidae

Autor(es)

Beco, Renata ^{[1, 2]} ; Silveira, Luis F. ^[2] ; Derryberry, Elizabeth P. ^[3] ; Bravo, Gustavo A. ^{[4, 5, 2]}

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, BR-05508090 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Secao Aves, Museu Zool, BR-04263000 Sao Paulo - Brazil

^[3] Univ Tennessee, Dept Ecol & Evolutionary Biol, Knoxville, TN 37996 - USA

^[4] Harvard Univ, Museum Comparat Zool, Cambridge, MA 02138 - USA

^[5] Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 - USA

• Tipo de documento: Artigo Científico
• Fonte: Evolution; v. 75, n. 10 AUG 2021.
• Citações Web of Science: 1

Resumo

The environment can impose constraints on signal transmission properties such that signals should evolve in predictable directions (Sensory Drive Hypothesis). However, behavioral and ecological factors can limit investment in more than one sensory modality leading to a trade-off in use of different signals (Transfer Hypothesis). In birds, there is mixed evidence for both sensory drive and transfer hypothesis. Few studies have tested sensory drive while also evaluating the transfer hypothesis, limiting understanding of the relative roles of these processes in signal evolution. Here, we assessed both hypotheses using acoustic and visual signals in male and female antwrens (Thamnophilidae), a species-rich group that inhabits diverse environments and exhibits behaviors, such as mixed-species flocking, that could limit investment in different signal modalities. We uncovered significant effects of habitat (sensory drive) and mixed-species flocking behavior on both sensory modalities, and we revealed evolutionary trade-offs between song and plumage complexity, consistent with the transfer hypothesis. We also showed sex- and trait-specific responses in visual signals that suggest both natural and social selection play an important role in the evolution of sexual dimorphism. Altogether, these results support the idea that environmental (sensory drive) and behavioral pressures (social selection) shape signal evolution in antwrens. (AU)

• Processo FAPESP: 16/08814-5 - Evolução dos sinais acústicos e visuais nos thamnofilídeos da tribo Formicivorini (Aves: Passeriformes)
• Beneficiário: Renata Pereira Beco
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 12/23852-0 - Sistemática, biogeografia e evolução fenotípica dos Thamnophilini (Aves, Thamnophilidae): uma aproximação baseada em sequenciamento maciço de DNA
• Beneficiário: Gustavo Adolfo Bravo Mora
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/16938-9 - Evolução dos sinais visuais nos thamnofilídeos da tribo Formicivorini (aves, Thamnophilidae)
• Beneficiário: Renata Pereira Beco
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Mestrado