Highest Diploid Number Among Gymnotiformes: First Cytogenetic Insights into Rhabdolichops (Sternopygidae)

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dc.contributor.authorSuarez, Pablo
dc.contributor.authorGuerreiro Pinto Barroso, Inae Cristina
dc.contributor.authorSilva, Danillo dos Santos
dc.contributor.authorMilhomem, Susana S. R.
dc.contributor.authorCabral-de-Mello, Diogo Cavalcanti [UNESP]
dc.contributor.authorMartins, Cesar [UNESP]
dc.contributor.authorPieczarka, Julio Cesar
dc.contributor.authorNagamachi, Cleusa Yoshiko
dc.contributor.institutionUniv Fed Para
dc.contributor.institutionCONICET UNaM
dc.contributor.institutionUniv Estado Para
dc.contributor.institutionInst Fed Educ Ciencia & Tecnol Goias
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-28T13:17:38Z
dc.date.available2018-11-28T13:17:38Z
dc.date.issued2017-06-01
dc.description.abstractWe report the first comparative cytogenetic analysis of two species from electrogenic fish of genus Rhabdo-lichops (Sternopygidae, Gymnotiformes): Rhabdolichops troscheli and Rhabdolichops cf eastwardi. R. troscheli has 2n = 54 (fundamental number [FN] = 66), whereas R. cf. eastwardi has 2n = 74 (FN = 78). C-banding revealed centromeric constitutive heterochromatin in both species. Ag-NORs mapped on pair 6 in R. troscheli and pair 30 in R. cf eastwardi. Fluorescense in situ hybridization with 18S rDNA probes confirmed the Ag-NOR staining results and revealed additional (presumably silent) ribosomal genes on pairs 12, 13, 21, 23, 26, and 27 in R. cf eastwardi. 5S rDNA was found on the centromeres of pair 7 in both species. Telomeric probes showed only distal locations. Dispersed signal patterns were obtained using probes for retrotransposons Rex1 and Rex3. Histone H1 and H3 genes were found together on pair 6 in R. cf eastwardi. The high diploid number found in Rhabdolichops suggests that chromosome fission may have contributed to its chromosomal evolution, phylogenetic relationship of the Sternopygidae suggests that this increase in diploid number could be a synapomorphic characteristic of genus Rhabdolichops. Although both species are phylogenetically close related, their karyotype structure has undergone divergent evolutionary directions. All in all, our results strongly suggest that R. cf eastwardi experencied recent intense genome reorganization.en
dc.description.affiliationUniv Fed Para, Inst Ciencias Biol, Ctr Estudos Avancados Biodiversidade, Lab Citogenet, Rua Augusto Correa 01, BR-66075110 Belem, Para, Brazil
dc.description.affiliationCONICET UNaM, Inst Biol Subtrop, Puerto Iguazu, Argentina
dc.description.affiliationUniv Estado Para, Maraba, Brazil
dc.description.affiliationInst Fed Educ Ciencia & Tecnol Goias, Valparaiso De Goias, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Rio Claro, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Rio Claro, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Botucatu, SP, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipBanco Nacional de Desenvolvimento Economico e Social (BNDES)
dc.description.sponsorshipIdCNPq: 475013/2012-3
dc.description.sponsorshipIdCAPES: 047/2012
dc.description.sponsorshipIdFAPESP: TO 011/2008
dc.description.sponsorshipIdBanco Nacional de Desenvolvimento Economico e Social (BNDES): Operacao 2.318.698.0001
dc.description.sponsorshipIdCNPq: 308428/2013-7
dc.description.sponsorshipIdCNPq: 308401/2013-1
dc.format.extent272-279
dc.identifierhttp://dx.doi.org/10.1089/zeb.2016.1405
dc.identifier.citationZebrafish. New Rochelle: Mary Ann Liebert, Inc, v. 14, n. 3, p. 272-279, 2017.
dc.identifier.doi10.1089/zeb.2016.1405
dc.identifier.fileWOS000402566000009.pdf
dc.identifier.issn1545-8547
dc.identifier.lattes8858800699425352
dc.identifier.orcid0000-0003-3534-974X
dc.identifier.urihttp://hdl.handle.net/11449/165626
dc.identifier.wosWOS:000402566000009
dc.language.isoeng
dc.publisherMary Ann Liebert, Inc
dc.relation.ispartofZebrafish
dc.relation.ispartofsjr0,795
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectelectric fish
dc.subjectchromosomes
dc.subjectbiodiversity
dc.subjectAmazon rainforest
dc.subjectkaryotypic diversity
dc.titleHighest Diploid Number Among Gymnotiformes: First Cytogenetic Insights into Rhabdolichops (Sternopygidae)en
dc.typeArtigo
dcterms.rightsHolderMary Ann Liebert, Inc
unesp.author.lattes8858800699425352[6]
unesp.author.orcid0000-0003-3534-974X[6]
unesp.author.orcid0000-0003-1516-2734[8]

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