Chromosome evolution in Cophomantini (Amphibia, Anura, Hylinae)

Autor(es):Mostrar menos -

Ferro, Juan M. ^[1] ; Cardozo, Dario E. ^[1] ; Suarez, Pablo ^[2] ; Boeris, Juan M. ^[1] ; Blasco-Zuniga, Ailin ^[3] ; Barbero, Gaston ^[4] ; Gomes, Anderson ^[5] ; Gazoni, Thiago ^[6] ; Costa, William ^[7] ; Nagamachi, Cleusa Y. ^[8] ; Rivera, Miryan ^[3] ; Parise-Maltempi, Patricia P. ^[6] ; Wiley, John E. ^[9] ; Pieczarka, Julio C. ^[8] ; Haddad, Celio F. B. ^{[10, 11]} ; Faivovich, Julia A. N. ^{[12, 13]} ; Baldo, Diego ^[1]

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^[1] Univ Nacl Misiones, Fac Ciencias Exactas Quim & Nat, UNaM, Lab Genet Evolut, Inst Biol Subtrop, CONICET, Posadas, Misiones - Argentina

^[2] UNaM, CONICET, Inst Biol Subtrop, Puerto Iguazu, Misiones - Argentina

^[3] Pontificia Univ Catolica Ecuador, Ctr Invest Salud Amer Latina CISeAL, LICBA, Quito - Ecuador

^[4] Univ Maimonides, CONICET, Ctr Estudios Biomed Biotecnol Ambientales & Diagn, Buenos Aires, DF - Argentina

^[5] Inst Fed Educ Ciencia & Tecnol Para, Abaetetuba, Para - Brazil

^[6] UNESP Univ Estadual Paulista, Inst Biociencias, Dept Biol, Campus Rio Claro, Sao Paulo - Brazil

^[7] UNICAMP Univ Estadual Campinas, Inst Biol, Dept Biol Estrutural & Func, Campinas, SP - Brazil

^[8] Univ Fed Para, Inst Ciencias Biol, Lab Citogenet, Ctr Estudos Avancados Biodiversidade, Belem, Para - Brazil

^[9] East Carolina Univ, Brody Sch Med, Greenville, NC - USA

^[10] UNESP Univ Estadual Paulista, Dept Zool, Sao Paulo - Brazil

^[11] UNESP Univ Estadual Paulista, Ctr Aquicultura, Inst Biociencias, Sao Paulo - Brazil

^[12] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Biodiversidad & Biol Expt, Buenos Aires, DF - Argentina

^[13] Consejo Nacl Invest Cient & Tecn, Museo Argentino Ciencias Naturales Bernardino Riv, Div Herpetol, Buenos Aires, DF - Argentina

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 13, n. 2 FEB 14 2018.
• Citações Web of Science: 7

Resumo

The hylid tribe Cophomantini is a diverse clade of Neotropical treefrogs composed of the genera Aplastodiscus, Boana, Bokermannohyla, Hyloscirtus, and Myersiohyla. The phylo-genetic relationships of Cophomantini have been comprehensively reviewed in the literature, providing a suitable framework for the study of chromosome evolution. Employing different banding techniques, we studied the chromosomes of 25 species of Boana and 3 of Hyloscirtus; thus providing, for the first time, data for Hyloscirtus and for 15 species of Boana. Most species showed karyotypes with 2n = 2x = 24 chromosomes; some species of the B. albopunctata group have 2n = 2x = 22, and H. alytolylax has 2n = 2x = 20. Karyotypes are all bi-armed in most species presented, with the exception of H. larinopygion (FN = 46) and H. alytolylax (FN = 38), with karyotypes that have a single pair of small telocentric chromosomes. In most species of Boana, NORs are observed in a single pair of chromosomes, mostly in the small chromosomes, although in some species of the B. albopunctata, B. pulchella, and B. semilineata groups, this marker occurs on the larger pairs 8, 1, and 7, respectively. In Hyloscirtus, NOR position differs in the three studied species: H. alytolylax (4p), H. palmeri (4q), and H. larinopygion (1p). Heterochromatin is a variable marker that could provide valuable evidence, but it would be necesserary to understand the molecular composition of the C-bands that are observed in different species in order to test its putative homology. In H. alytolylax, a centromeric DAPI+band was observed on one homologue of chromosome pair 2. The band was present in males but absent in females, providing evidence for an XX/XY sex determining system in this species. We review and discuss the importance of the different chromosome markers (NOR position, C-bands, and DAPI/CMA(3) patterns) for their impact on the taxonomy and karyotype evolution in Cophomantini. (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