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dc.contributor.author
Venerus, Leonardo Ariel
dc.contributor.author
Ciancio Blanc, Javier Ernesto
dc.contributor.author
Riva Rossi, Carla Marcela
dc.contributor.author
Gilbert Horvath, Elizabeth A.
dc.contributor.author
Gosztonyi, Atila Esteban
dc.contributor.author
Garza, John Carlos
dc.date.available
2016-04-25T19:32:38Z
dc.date.issued
2013-06
dc.identifier.citation
Venerus, Leonardo Ariel; Ciancio Blanc, Javier Ernesto; Riva Rossi, Carla Marcela; Gilbert Horvath, Elizabeth A.; Gosztonyi, Atila Esteban; et al.; Genetic structure and different color morphotypes suggest the occurrence and bathymetric segregation of two incipient species of Sebastes off Argentina; Springer; Naturwissenschaften; 100; 7; 6-2013; 645-658
dc.identifier.issn
0028-1042
dc.identifier.uri
http://hdl.handle.net/11336/5369
dc.description.abstract
Rockfishes of the genus Sebastes are extensively distributed in the Pacific and Atlantic oceans. Although the occurrence of two morphologically similar species in the Southern Hemisphere, Sebastes oculatus and Sebastes capensis, is now clearly established, the taxonomic status and phylogeographic patterns for the genus in the region have not yet been completely resolved. In this study, we provide new insights into the taxonomy and evolutionary relationships of rockfishes inhabiting the Southwestern Atlantic Ocean, off the coast of mainland Argentina, by combining mitochondrial DNA (mtDNA) control region sequences, microsatellite data and color pattern analyses. Differences in coloration (-dark- and -light- fish) together with bathymetric segregation between color morphotypes were evident from fish collection and literature review. In addition, the mtDNA phylogenetic analysis and Bayesian clustering analysis using microsatellite data separated the fish into two distinct groups (FST = 0.041), most likely representing incipient species. Our results suggest that speciation-by-depth in the absence of physical barriers could be a widespread mechanism of speciation in Sebastes from both the Northern and Southern Hemispheres. Nevertheless, the degree of genetic differentiation found, added to the large number of individuals displaying high levels of admixture, points to the occurrence of incomplete reproductive barriers between color morphotypes. Beyond the taxonomic and phylogeographic implications of our findings, the occurrence of distinct groups of Sebastes off the coast of Argentina being targeted by different fisheries (angling and trawling) have consequences for the design and implementation of appropriate fishery regulations to avoid overharvest of either group.
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
Sebastidae
dc.subject
Phylogeography
dc.subject
Rocky Reef Fish
dc.subject
Incomplete Reproductive Isolation
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Incipient Speciation
dc.subject
Morphotypes
dc.subject.classification
Zoología, Ornitología, Entomología, Etología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Genetic structure and different color morphotypes suggest the occurrence and bathymetric segregation of two incipient species of Sebastes off Argentina
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-05-06 15:52:43.262787-03
dc.journal.volume
100
dc.journal.number
7
dc.journal.pagination
645-658
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Venerus, Leonardo Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Ciancio Blanc, Javier Ernesto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Riva Rossi, Carla Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Gilbert Horvath, Elizabeth A.. National Marine Fisheries Service; Estados Unidos
dc.description.fil
Fil: Gosztonyi, Atila Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina
dc.description.fil
Fil: Garza, John Carlos. National Marine Fisheries Service; Estados Unidos
dc.journal.title
Naturwissenschaften
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/article/10.1007%2Fs00114-013-1061-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s00114-013-1061-2
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00114-013-1061-2


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