Comparative chromosomal mapping of microsatellite repeats reveals divergent patterns of accumulation in 12 Siluridae (Teleostei: Siluriformes) species

Autor(es)

Ditcharoen, Sukhonthip ^[1] ; Cavalcante Sassi, Francisco de Menezes ^[2] ; Carlos Bertollo, Luiz Antonio ^[2] ; Molina, Wagner Franco ^[3] ; Liehr, Thomas ^[4] ; Saenjundaeng, Pasakorn ^[5] ; Tanomtong, Alongklod ^[1] ; Supiwong, Weerayuth ^[5] ; Suwannapoom, Chatmongkon ^[6] ; Cioffi, Marcelo de Bello ^[2]

Afiliação do(s) autor(es)

^[1] Khon Kaen Univ, Fac Sci, Dept Biol, Tox Subst Livestock & Aquat Anim Res Grp, Khon Kaen - Thailand

^[2] Univ Fed Sao Carlos UFSCar, Dept Genet & Evolucao, Rodovia Washington Luiz Km 235, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[3] Univ Fed Rio Grande do Norte UFRN, Ctr Biociencias, Dept Biol Celular & Genet, Natal, RN - Brazil

^[4] Univ Hosp Jena, Inst Human Genet, Jena - Germany

^[5] Khon Kaen Univ, Fac Appl Sci & Engn, Nong Khai Campus, Nong Khai - Thailand

^[6] Univ Phayao, Sch Agr & Nat Resources, Dept Fishery, Muang Phayao - Thailand

• Tipo de documento: Artigo Científico
• Fonte: GENETICS AND MOLECULAR BIOLOGY; v. 43, n. 4 2020.
• Citações Web of Science: 0

Resumo

The freshwater family Siluridae occurs in Eurasia and is especially speciose in South and Southeast Asia, representing an important aquaculture and fishery targets. However, despite the restricted cytogenetic data, a high diploid number variation (from 2n=40 to 92) characterizes this fish group. Considering the large genomic divergence among its species, silurid genomes have experienced an enormous diversification throughout their evolutionary history. Here, we aim to investigate the chromosomal distribution of several microsatellite repeats in 12 Siluridae species and infer about their possible roles in the karyotype evolution that occurred in this group. Our results indicate divergent patterns of microsatellite distribution and accumulation among the analyzed species. Indeed, they are especially present in significant chromosome locations, such as the centromeric and telomeric regions, precisely the ones associated with several kinds of chromosomal rearrangements. Our data provide pieces of evidence that repetitive DNAs played a direct role in fostering the chromosomal differentiation and biodiversity in this fish family. (AU)

• Processo FAPESP: 18/22033-1 - Uma abordagem intercontinental para a investigação da evolução cromossômica, diversidade genética e biogeografia na ordem Osteoglossiformes (Teleostei: Osteoglossomorpha). Parte III.
• Beneficiário: Marcelo de Bello Cioffi
• Modalidade de apoio: Auxílio à Pesquisa - Regular