Gland composition in sexually dimorphic skin structures of two species of Hylid frogs: Plectrohyla guatemalensis and Ptychohyla hypomykter

Autor(es)

Celeste Luna, Maria ^[1] ; Roberto Vasquez-Almazan, Carlos ^[2] ; Faivovich, Julian ^{[3, 1]} ; Eduardo Brunetti, Andres ^{[4, 5]}

Afiliação do(s) autor(es)

^[1] Consejo Nacl Invest Cient & Tecn, Museo Argentino Ciencias Nat Bernardino Rivadavia, Div Herpetol, Angel Gallardo 470, DJR1405, RA-1405 Buenos Aires, DF - Argentina

^[2] Univ San Carlos, Escuela Biol, Museo Hist Nat, Guatemala City - Guatemala

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

^[4] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, Dept Fis & Quim, NPPNS, Ribeirao Preto, SP - Brazil

^[5] UNAM, CONICET, Inst Biol Subtrop Claudio Juan Bidau, Lab Genet Evolut, Posadas, Misiones - Argentina

• Tipo de documento: Artigo Científico
• Fonte: Amphibia-Reptilia; v. 40, n. 4, p. 523-529, 2019.
• Citações Web of Science: 0

Resumo

Secondary sexual characters form a diverse group of traits widely spread in amphibians. Within anurans, the Hylini tribe represents an interesting group to examine the evolution of this type of characters because it has different skin structure modifications, including ventrolateral glands, nuptial pads, and unique swollen upper lips. We analysed the skin gland composition in the upper lip of Plectrohyla guatemalensis and the ventrolateral gland of Ptychohyla hypomykter (Hylidae: Hylinae: Hylini). Each of these species is characterized by a different type of sexually dimorphic skin gland; specialized mucous glands (SMGs) in Pl. guatemalensis and specialized serous glands (SSGs) in Pt. hypomykter. The SMGs conform to the general type of sexually dimorphic skin glands in amphibians, whereas SSGs are very rare. Because SMGs are likely involved in the production of sexual pheromones, their distinctive location and their co-occurrence with other secondary sexual characters like long and pointed maxillary and premaxillary teeth in Pl. guatemalensis suggests that the system used for their delivery may be a distinguishing behavioral feature in this species. The presence of both types of glands in Pt. hypomykter (SMGs in nuptial pads, and SSGs in ventrolateral glands) suggests a different or, at least, a complementary role of these two types of glands during reproduction. (AU)

• 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: 12/10000-5 - Uma abordagem multidisciplinar para o estudo da diversificação de anfíbios
• Beneficiário: Taran Grant
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 14/20915-6 - Ecologia química em anuros: caracterização de compostos voláteis e feromônios peptídicos em secreções de peles de rãs
• Beneficiário: Andrés Eduardo Brunetti
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/23725-1 - Análise genômico de bactérias simbióticas de pele em pererecas como fonte potencial de compostos voláteis
• Beneficiário: Andrés Eduardo Brunetti
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado