Genetic Diversity of an Imperiled Neotropical Catfish and Recommendations for Its Restoration

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dc.citation.volume8
dc.contributor.authorFonseca, Fernando S.
dc.contributor.authorDomingues, Rodrigo R. [UNIFESP]
dc.contributor.authorHallerman, Eric M.
dc.contributor.authorHilsdorf, Alexandre W. S.
dc.coverageLausanne
dc.date.accessioned2020-07-02T18:52:19Z
dc.date.available2020-07-02T18:52:19Z
dc.date.issued2017
dc.description.abstractThe long-whiskered catfish Steindachneridion parahybae (Family Pimelodidae) is endemic to the Paraiba do Sul River basin in southeastern Brazil. This species was heavily exploited by artisanal fisheries and faces challenges posed by dams, introduced species, and deterioration of critical habitat. The remaining populations are small and extirpated from some locales, and the species is listed as critically endangered in Brazil. Screening variation at a partial mitochondrial control region sequence (mtCR) and 20 microsatellite loci, we: (i) describe the patterns of genetic diversity along its current distributional rangeen
dc.description.abstract(ii) test the null hypothesis of panmixiaen
dc.description.abstract(iii) investigate the main factors driving its current population structure, and (iv) propose management of broodstock for fostering recovery of wild populations through genetically cognizant restocking. Our microsatellite data for 70 individuals from five collections indicate moderate levels of heterozygosity (H-O = 0.45) and low levels of inbreeding (F-IS = 0.016). Individual-based cluster analyses showed clear genetic structure, with three clusters of individuals over the collection area with no mis-assigned individuals, suggesting no recent migration among the three clusters. Pairwise D-EST values showed moderate and significant genetic differentiation among all populations so identified. The MUR population may have suffered a recent demographic reduction. mtCRs for 70 individuals exhibited 36 haplotypes resulting from 38 polymorphic sites. Overall, mitochondrial haplotype diversity was 0.930 (+/- 0.023) and nucleotide diversity was 0.011 (+/- 0.002). Significant population structure was observed, with phi(ST) = 0.226. Genetic markers could be used in a hatchery-based restoration program emphasizing breeding of pairs with low kinship values in order to promote retention of genetic diversity and avoid inbreeding. Individual average kinship relationships showed 87.3% advised matings, 11.0% marginal matings, and 1.7% advised against. While these results comprise a contribution toward planning better breeding management and monitoring, parallel actions to be undertaken include surveying healthy riverine habits for reintroduction and continued searching for wild individuals to introduce new variation into the captive broodstock to avoid adaptation to captivity and to minimize inbreeding.en
dc.description.affiliationUniv Mogi das Cruzes, Lab Genet Organismos Aquat & Aquicultura, Unidade Biotecnol, Nucleo Integrado Biotecnol, Mogi Das Cruzes, Brazil
dc.description.affiliationAgencia Paulista Tecnol Agronegocios, Inst Pesca, Secretaria Agr & Abastecimento Estado Sao Paulo, Sao Jose Do Rio Preto, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Inst Mar, Santos, Brazil
dc.description.affiliationVirginia Polytech Inst & State Univ, Dept Fish & Wildlife Conservat, Blacksburg, VA 24061 USA
dc.description.affiliationUnifespUniv Fed Sao Paulo, Inst Mar, Santos, Brazil
dc.description.provenanceMade available in DSpace on 2020-07-02T18:52:19Z (GMT). No. of bitstreams: 0 Previous issue date: 2017. Added 1 bitstream(s) on 2020-07-02T20:12:37Z : No. of bitstreams: 1 WOS000417740300001.pdf: 7667199 bytes, checksum: f9fda5dfba176533015ee69ee39d92e3 (MD5)en
dc.description.sourceWeb of Science
dc.description.sponsorshipSao Paulo Research Foundation (FAPESP) [11/23752-2]
dc.description.sponsorshipAGEVAP [10/2012]
dc.description.sponsorshipFUNDEPAG
dc.description.sponsorshipInstituto de Pesca
dc.description.sponsorshipIDFAPESP [11/23752-2]
dc.description.sponsorshipIDAGEVAP [10/2012]
dc.format.extent-
dc.identifierhttp://dx.doi.org/10.3389/fgene.2017.00196
dc.identifier.citationFrontiers In Genetics. Lausanne, v. 8, p. -, 2017.
dc.identifier.doi10.3389/fgene.2017.00196
dc.identifier.fileWOS000417740300001.pdf
dc.identifier.issn1664-8021
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/54000
dc.identifier.wosWOS:000417740300001
dc.language.isoeng
dc.publisherFrontiers Media Sa
dc.relation.ispartofFrontiers In Genetics
dc.rightsAcesso aberto
dc.subjectSteindachneridion parahybaeen
dc.subjectsurubim-do-paraibaen
dc.subjectParaiba do Sul Riveren
dc.subjectSiluriformesen
dc.subjectpopulation structureen
dc.subjectconservation aquacultureen
dc.titleGenetic Diversity of an Imperiled Neotropical Catfish and Recommendations for Its Restorationen
dc.typeArtigo
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