alexa Phylogenetic and Phylogeographic Relationships among Lineages of the Armored Catfish Ancistrus Kner, 1854 (Loricariidae: Ancistrini), from the Amazon and Paraguay Basins| Abstract
ISSN: 2329-9002

Journal of Phylogenetics & Evolutionary Biology
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  • Research Article   
  • J Phylogenetics Evol Biol 2018, Vol 6(2): 199
  • DOI: 10.4172/2329-9002.1000199

Phylogenetic and Phylogeographic Relationships among Lineages of the Armored Catfish Ancistrus Kner, 1854 (Loricariidae: Ancistrini), from the Amazon and Paraguay Basins

Rafael Splendore De Borba1, Sandra Mariotto2, Liano Centofante3 and Patricia Pasquali Parise-Maltempi1*
1Instituto de Biociências, UNESP Universidade Estadual Paulista, , Rio Claro, São Paulo, Brazil
2IFMT Instituto Federal do Mato Grosso, , Cuiabá, Mato Grosso, Brazil
3Instituto de Biociências, UFMT Universidade Federal de Mato Grosso, , Cuiabá, Mato Grosso, Brazil
*Corresponding Author : Patricia Pasquali Parise-Maltempi, Instituto de Biociências, UNESP Universidade Estadual Paulista, 24A Avenida, 1515, CEP 13506900, Rio Claro, SP, Brazil, Tel: +5519 3526-4148, Email: [email protected]

Received Date: Apr 11, 2018 / Accepted Date: Apr 17, 2018 / Published Date: Apr 20, 2018

Abstract

Ancistrus is one of the most diverse genera in the Ancistrini tribe, with 64 nominal species. The group is characterized by high cytogenetic variability; the diploid number of chromosomes ranges from 2n = 34 to 2n = 54. Ancistrus is widely distributed in the basins of the Uruguay, Paraguay, and Amazonian rivers; the latter two regions show the greatest diversity of Ancistrus species and karyotypes. Despite these characteristics, the group includes species for which taxonomic identification is difficult, and phylogenetic relationships and phylogeographic patterns, especially in the Paraguay and Amazon basins, have not yet been revealed. In this study, we determined the phylogenetic and phylogeographic relationships among the Ancistrus lineages in these regions. In particular, 93 concatenated sequences of mitochondrial ATPase 6/8 and COI as well as nuclear Rag2 were used for a phylogenetic analysis, and ATPase 6/8 were used for a phylogeographic analysis. The topology generated by the Bayesian method included three distinct clades subdivided into 21 groups. The clades indicated a monophyletic relationship among the lineages from the Amazon and Paraguay basins. The 21 groups had a high average genetic distance (8.4%) and were structured genetically. In the haplotype network, eight large groups were observed, seven belonging to the Paraguay basin and one corresponding to the Amazon basin, and no haplotypes were shared between the two basins. These results indicate that Ancistrus lineages form a monophyletic unit in the Paraguay and Amazon basins, and these lineages have a high level of divergence and genetic isolation. These results corroborate the existence of cryptic species in the region and emphasize the need for a taxonomic revision of the genus in these basins.

Keywords: Catfish; Hypostominae; Genetic structure; Distancebased tree; Taxonomy

Citation: de Borba RS, Mariotto S, Centofante L, Parise-Maltempi PP (2018) Phylogenetic and Phylogeographic Relationships among Lineages of the Armored Catfish Ancistrus Kner, 1854 (Loricariidae: Ancistrini), from the Amazon and Paraguay Basins. J Phylogenetics Evol Biol 6:199. Doi: 10.4172/2329-9002.1000199

Copyright: © 2018 de Borba RS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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