Increased B chromosome frequency and absence of drive in the fish Prochilodus lineatus

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dc.contributor.authorOliveira, Claudio [UNESP]
dc.contributor.authorRodrigues Saboya, Silvia Maria [UNESP]
dc.contributor.authorForesti, Fausto [UNESP]
dc.contributor.authorSenhorini, José Augusto [UNESP]
dc.contributor.authorBernardino, Geraldo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:18:16Z
dc.date.available2014-05-27T11:18:16Z
dc.date.issued1997-11-01
dc.description.abstractThe neotropical freshwater fish species Prochilodus lineatus (Pisces, Prochilodontidae) shows 2n = 54 chromosomes plus supernumerary microchromosomes ranging in number from zero to seven among different animals. The transmission rates of B chromosomes were studied by the analysis of the parental and F1 generations in 10 controlled crosses performed with specimens from a natural population. The mean transmission rate observed for B chromosomes (k(B) = 0.511) was consistent with that expected from a regular meiotic behaviour orbs in both sexes and with the theoretical value under a Mendelian mode of transmission (0.5). Possible explanations for the dramatic increase in B frequency observed in this population during the last 10 years are discussed, bearing in mind the current absence of drive.en
dc.description.affiliationDepartamento de Morfologia Instituto de Biociências UNESP, 18618-000, Botucatu, SP
dc.description.affiliationCAUNESP Ctro. Pesquisa Treinamento em A. IBAMA, Pirassununga, SP
dc.description.affiliationUnespDepartamento de Morfologia Instituto de Biociências UNESP, 18618-000, Botucatu, SP
dc.description.affiliationUnespCAUNESP Ctro. Pesquisa Treinamento em A. IBAMA, Pirassununga, SP
dc.format.extent473-476
dc.identifierhttp://dx.doi.org/10.1038/sj.hdy.6882210
dc.identifierhttp://dx.doi.org/10.1038/hdy.1997.186
dc.identifier.citationHeredity, v. 79, n. 5, p. 473-476, 1997.
dc.identifier.doi10.1038/sj.hdy.6882210
dc.identifier.issn0018-067X
dc.identifier.lattes0804793944846367
dc.identifier.scopus2-s2.0-15444348779
dc.identifier.urihttp://hdl.handle.net/11449/65214
dc.identifier.wosWOS:A1997YF50900004
dc.language.isoeng
dc.relation.ispartofHeredity
dc.relation.ispartofjcr3.872
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectB chromosome evolutionen
dc.subjectB chromosomes inheritanceen
dc.subjectFish cytogeneticsen
dc.subjectSupernumerary chromosomesen
dc.subjectProchilodus lineatusen
dc.titleIncreased B chromosome frequency and absence of drive in the fish Prochilodus lineatusen
dc.typeArtigo
dcterms.licensehttp://www.nature.com/authors/policies/license.html
unesp.author.lattes0804793944846367
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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Artigos - Morfologia - IBB
Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp