The non-monotypic status of the neotropical fish genus Hemiodontichthys (Siluriformes, Loricariidae) evidenced by genetic approaches

Autor(es)

Carvalho, Margarida Lima ^[1] ; da Costa Silva, Guilherme Jose ^{[2, 3]} ; Melo, Silvana ^[3] ; Ashikaga, Fernando Yuldi ^[3] ; Shinnabukuro-Dias, Cristiane Kioko ^[3] ; Scacchetti, Priscilla Cardim ^[3] ; Devide, Renato ^[3] ; Foresti, Fausto ^[3] ; Oliveira, Claudio ^[3]

Afiliação do(s) autor(es)

^[1] Univ Fed Acre, Lab Citogenet & Genet Mol LABGENE, Rio Branco, Acre - Brazil

^[2] Univ Santo Amaro, Dept Biol, Sao Paulo - Brazil

^[3] Univ Estadual Paulista, LBGP, Inst Biociencias Botucatu, Botucatu, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MITOCHONDRIAL DNA PART A; v. 29, n. 8, p. 1224-1230, 2018.
• Citações Web of Science: 1

Resumo

The combination of cytogenetic and molecular data with those traditionally obtained in areas like systematics and taxonomy created interesting perspectives for the analysis of natural populations under different aspects. In this context, this study aimed to evaluate the genetic differentiation among populations of the genus Hemiodontichthys Bleeker, 1862, through combined genetic techniques and included the analysis of populations sampled in the Araguaia River, Guama River, Madeira River and two populations from the Purus River. Hemiodontichthys samples from the two localities in Purus River were also karyotyped in order to address the degree of chromosomal variation between populations. Through GMYC analysis of the COI tree, the patterns of genetic variation among local populations revealed to be higher than the ones found among distinct species from other genera of the subfamily Loricariinae, suggesting the existence of probable four cryptic species in this genus. The possible existence of a species complex in the genus is corroborated by the different cytogenetic patterns between Hemiodontichthys sp. 1 and sp. 2, revealing the necessity of a deep taxonomic review of the group. (AU)

• Processo FAPESP: 14/26508-3 - Filogenia da hiperdiversa ordem Characiformes (Teleostei: Ostariophysi) utilizando elementos ultraconservados
• Beneficiário: Claudio de Oliveira
• Modalidade de apoio: Auxílio à Pesquisa - Temático