Genetic differentiation among distinct karyomorphs of the wolf fish Hoplias malabaricus species complex (Characiformes, Erythrinidae) and report of unusual hybridization with natural triploidy

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniv Ensino Super Inga
dc.contributorUniversidade Federal de São Carlos (UFSCar)
dc.creatorUtsunomia, R. [UNESP]
dc.creatorPansonato Alves, J. C. [UNESP]
dc.creatorPaiva, L. R. S.
dc.creatorCosta Silva, G. J. [UNESP]
dc.creatorOliveira, C. [UNESP]
dc.creatorBertollo, L. A. C.
dc.creatorForesti, F. [UNESP]
dc.date2015-03-18T15:55:16Z
dc.date2015-03-18T15:55:16Z
dc.date2014-11-01
dc.date.accessioned2023-09-12T03:06:32Z
dc.date.available2023-09-12T03:06:32Z
dc.identifierhttp://dx.doi.org/10.1111/jfb.12526
dc.identifierJournal Of Fish Biology. Hoboken: Wiley-blackwell, v. 85, n. 5, p. 1682-1692, 2014.
dc.identifier0022-1112
dc.identifierhttp://hdl.handle.net/11449/117133
dc.identifier10.1111/jfb.12526
dc.identifierWOS:000343970400023
dc.identifier0804793944846367
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8766618
dc.descriptionIn this study, genetic differentiation between karyomorphs A (2n=42) and D (2n=39/40) of the wolf fish Hoplias malabaricus, which is comprised of several cryptic species that present a wide variety of diploid chromosome numbers and sex chromosome systems, resulting in the identification of seven distinct karyomorphs (A-G), was investigated using a combination of molecular and cytogenetic tools. Deep sequence divergences for both karyomorphs were observed and indicate a long period of reproductive isolation between karyomorphs A and D. Additionally, one individual with 61 chromosomes was identified, which, as far as is known, is the first case of natural triploidy resulting from the hybridization between these highly differentiated karyomorphs of H. malabaricus. Molecular and cytogenetic analyses revealed that this allotriploid specimen carries two sets of maternal chromosomes from karyomorph D (2n=40) and one set of chromosomes from karyomorph A (n=21). Moreover, ribosomal sites and active nucleolus organizer regions from both parental contributors were found in the triploid hybrid. Considering the significant genetic distances between karyomorphs A and D, one of the primary reasons for the lack of recurrent reports of hybridization in the H. malabaricus species complex may be due to post-zygotic barriers, such as hybrid sterility or unviability. (C) 2014 The Fisheries Society of the British Isles
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionUniv Estadual Paulista, Inst Biociencias, Dept Morfol, BR-18618970 Botucatu, SP, Brazil
dc.descriptionUniv Ensino Super Inga, BR-87070000 Maringa, Parana, Brazil
dc.descriptionUniv Fed Sao Carlos, Dept Genet & Evolucao, BR-13565905 Sao Carlos, SP, Brazil
dc.descriptionUniv Estadual Paulista, Inst Biociencias, Dept Morfol, BR-18618970 Botucatu, SP, Brazil
dc.format1682-1692
dc.languageeng
dc.publisherWiley-Blackwell
dc.relationJournal Of Fish Biology
dc.relation1.702
dc.relation0,822
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectcytogenetic mapping
dc.subjectErythrinidae
dc.subjectgenetic divergence
dc.subjectpost-zygotic barrier
dc.subjectreproductive isolation
dc.titleGenetic differentiation among distinct karyomorphs of the wolf fish Hoplias malabaricus species complex (Characiformes, Erythrinidae) and report of unusual hybridization with natural triploidy
dc.typeArtigo


Este ítem pertenece a la siguiente institución