Novel morphological structures in frogs: vocal sac diversity and evolution in Microhylidae (Amphibia: Anura)

Autor(es)

Targino, Mariane ^{[1, 2]} ; Elias-Costa, Agustin J. ^{[3, 2]} ; Taboada, Carlos ^{[2, 4]} ; Faivovich, Julian ^{[3, 2]}

Afiliação do(s) autor(es)

^[1] Univ Fed Rio de Janeiro, Museu Nacl, Dept Vertebrados, BR-20940040 Rio De Janeiro, RJ - Brazil

^[2] Consejo Nacl Invest Cient & Tecn, Museo Argentino Ciencias Nat Bernardino Rivadavia, Div Herpetol, Av Angel Gallardo 470, C1405DJR, Buenos Aires, DF - Argentina

^[3] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Biodiversidad & Biol Expt, Buenos Aires, DF - Argentina

^[4] Duke Univ, Dept Biol, 125 Sci Dr, Durham, NC 27708 - USA

• Tipo de documento: Artigo Científico
• Fonte: ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY; v. 187, n. 2, p. 479-493, OCT 2019.
• Citações Web of Science: 0

Resumo

Vocal sacs are present in most species of frogs and are the product of the interaction of three elements: the gular skin, the superficial submandibular musculature and an internal mucosa derived from the buccal floor. In this paper, we surveyed the structural diversity in the vocal sac of microhylids and related families in 109 exemplar species, including 11 of the 13 currently recognized subfamilies. We defined five characters related to anatomical and histological properties of the m. interhyoideus, as well as the relationship of this muscle and the vocal sac internal mucosa. We describe a vocal sac configuration characterized by highly abundant elastic fibres in association with muscle fibres, a very unusual structure in animal tissues. We discuss the evolution of novel structures in a phylogenetic context and identify new synapomorphies for Microhylidae and internal clades. Furthermore, we comment on the functional implications that these features have in vocal sac inflation. (AU)

• Processo FAPESP: 12/10000-5 - Uma abordagem multidisciplinar para o estudo da diversificação de anfíbios
• Beneficiário: Taran Grant
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 13/50741-7 - Diversidade e conservação dos anfíbios brasileiros
• Beneficiário: Célio Fernando Baptista Haddad
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 12/09401-5 - Análise filogenética de Pristimantis Jiménez de la Espada, 1870, um gênero megadiverso de anfíbios (Anura, Terrarana, Craugastoridae)
• Beneficiário: Mariane Targino Rocha
• Modalidade de apoio: Bolsas no Brasil - Doutorado