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dc.contributor.author
Pimper, Lida Elena
dc.contributor.author
Scott Baker, C.
dc.contributor.author
Prosser Goodall, Rae Natalie
dc.contributor.author
Olavarría, Carlos
dc.contributor.author
Remis, Maria Isabel
dc.date.available
2017-05-16T21:16:28Z
dc.date.issued
2010-12
dc.identifier.citation
Pimper, Lida Elena; Scott Baker, C.; Prosser Goodall, Rae Natalie; Olavarría, Carlos; Remis, Maria Isabel; Mitochondrial DNA variation and population structure of Commerson’s dolphins (Cephalorhynchus commersonii) in their southernmost distribution; Springer; Conservation Genetics; 11; 6; 12-2010; 2157-2168
dc.identifier.issn
1566-0621
dc.identifier.uri
http://hdl.handle.net/11336/16562
dc.description.abstract
The Commerson’s dolphin, Cephalorhynchus commersonii, is found in shallow waters of the continental shelf off the eastern coast of South America between 40°S and 56°S. This species is taken incidentally in artisanal gillnet fisheries, especially along the shallow coastline of northern Tierra del Fuego and southern Patagonia. The biological importance of by-catch is likely to be underestimated if the boundaries of subpopulations are not properly defined. Here, we report on the sequence variation of the mitochondrial DNA control region of the Commerson’s dolphin from five areas defined in Tierra del Fuego, Argentina and Chile, to provide a preliminary assessment of population structure where conservation efforts are most needed. A 466 bp fragment of the mitochondrial DNA control region was sequenced from 196 samples of skin, teeth and bone, defining 20 haplotypes from 17 polymorphic sites. Nucleotide (π = 0.40%) and haplotype (h = 0.807) diversity were low compared to some other odontocete populations, but similar to that of other species of this genus. Genetic differentiation evaluated through analyses of molecular variance (AMOVA) showed significant overall differences among areas within Tierra del Fuego (ΦST = 0.059, P < 0.01). An analysis of sex-specific population structure suggested that the dispersal rates of both females and males are low, indicative of females displaying greater site fidelity. The results from mtDNA control region sequences alone revealed significant differentiation among studied areas, which should be considered as independent management units. We recommend that the impact of localized gillnet mortalities should be managed on a local scale in these areas of Tierra del Fuego.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Commerson'S Dolphin
dc.subject
Mtdna Variation
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Population Structure
dc.subject
Conservation Genetics
dc.subject.classification
Genética y Herencia
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Mitochondrial DNA variation and population structure of Commerson’s dolphins (Cephalorhynchus commersonii) in their southernmost distribution
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-05-15T21:08:53Z
dc.identifier.eissn
1572-9737
dc.journal.volume
11
dc.journal.number
6
dc.journal.pagination
2157-2168
dc.journal.pais
Países Bajos
dc.journal.ciudad
Dordrecht
dc.description.fil
Fil: Pimper, Lida Elena. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Museo Acatushún de Aves y Mamíferos Marinos Australes; Argentina
dc.description.fil
Fil: Scott Baker, C.. The University Of Auckland; Nueva Zelanda. State University of Oregon; Estados Unidos
dc.description.fil
Fil: Prosser Goodall, Rae Natalie. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Museo Acatushún de Aves y Mamíferos Marinos Australes; Argentina
dc.description.fil
Fil: Olavarría, Carlos. The University Of Auckland; Nueva Zelanda. Fundación Centro de Estudios del Cuaternario; Chile
dc.description.fil
Fil: Remis, Maria Isabel. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; Argentina
dc.journal.title
Conservation Genetics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10592-010-0102-z
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10592-010-0102-z


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