Blue whale population structure along the eastern south pacific ocean: evidence of more than one population

Simple item page
dc.contributor.authorTorres - Florez, JP
dc.contributor.authorHucke - Gaete, R.
dc.contributor.authorLeDuc, R.
dc.contributor.authorLang, A.
dc.contributor.authorTaylor, B.
dc.contributor.authorPimper, L.E.
dc.contributor.authorBedrinana - Romano, L.
dc.contributor.authorRosenbaum, H.C.
dc.contributor.authorFigueroa, C.C.
dc.date.accessioned2019-01-04T20:41:52Z
dc.date.available2019-01-04T20:41:52Z
dc.date.issued2014-12
dc.descriptionSin acceso al documento completo.es_ES
dc.description.abstractBlue whales (Balaenoptera musculus) were among the most intensively exploited species of whales in the world. As a consequence of this intense exploitation, blue whale sightings off the coast of Chile were uncommon by the end of the 20th century. In 2004, a feeding and nursing ground was reported in southern Chile (SCh). With the aim to investigate the genetic identity and relationship of these Chilean blue whales to those in other Southern Hemisphere areas, 60 biopsy samples were collected from blue whales in SCh between 2003 and 2009. These samples were genotyped at seven microsatellite loci and the mitochondrial control region was sequenced, allowing us to identify 52 individuals. To investigate the genetic identity of this suspected remnant population, we compared these 52 individuals to blue whales from Antarctica (ANT, n = 96), Northern Chile (NCh, n = 19) and the eastern tropical Pacific (ETP, n = 31). No significant differentiation in haplotype frequencies (mtDNA) or among genotypes (nDNA) was found between SCh, NCh and ETP, while significant differences were found between those three areas and Antarctica for both the mitochondrial and microsatellite analyses. Our results suggest at least two breeding population units or subspecies exist, which is also supported by other lines of evidence such as morphometrics and acoustics. The lack of differences detected between SCh/NCh/ETP areas supports the hypothesis that eastern South Pacific blue whales are using the ETP area as a possible breeding area. Considering the small population sizes previously reported for the SCh area, additional conservation measures and monitoring of this population should be developed and prioritized.es_ES
dc.description.sponsorshipThis work was part of the PhD thesis of JPTF conducted at Programa de Doctorado en Ciencias mencion Ecologia y Evolucion, Universidad Austral de Chile (UACh), under the supervision of CCF. We thank the staff of Centro Ballena Azul for their hard work during sample collection over the years. Likewise, we thank Centro de Investigacion Eutropia (especially Rodrigo Moraga) for providing NCh samples. Also, we want to thank people from the Laboratorio de Ecologia Molecular y Genomica Evolutiva at UACh, Sackler Institute for Comparative Genomics, AMNH (NYC) and SWFSC (SD) for their valuable support during the laboratory work. JPTF was funded by a PhD fellowship and a thesis grant from CONICYT-Chile and by a thesis grant from DID/UACh and Centro Ballena Azul. This work was mostly funded by grants to RHG from the Wildlife Conservation Society, Direccion de Investigacion-UACH, Whale & Dolphin Conservation Society, Fundacion AVINA, Oregon State University, Natural Resources Defense Council, World Wildlife Fund, Rufford Small Grants Foundation, Whitley Fund for Nature and a gift from David and Susan Rockefeller through the research program 'Large whale ecology and conservation in Chile'. Genetic analyses detailed in this manuscript were supported by several grants to HCR. We want to especially thank Dr. Robert Brownell Jr. for his valuable commentaries and support. We also want to thank Dr. William Perrin, Dr. Frederick Archer, Brittany Hancock and Francine Kershaw for their useful comments.es_ES
dc.identifier.citationMolecular Ecology (2014) 23, 5998–6010es_ES
dc.identifier.issne1365-294X
dc.identifier.otherDOI: 10.1111/mec.12990
dc.identifier.urihttp://hdl.handle.net/20.500.11894/1213
dc.language.isoenes_ES
dc.publisherWiley & Sonses_ES
dc.relation.ispartofMolecular Ecologyes_ES
dc.relation.ispartofVol. 23
dc.relation.urihttps://doi.org/10.1111/mec.12990
dc.rights© Wiley & Sons Ltda. Derechos protegidos por la editoriales_ES
dc.subjectCienciaes_ES
dc.subjectMultilocus genotype dataes_ES
dc.subjectHumpback whaleses_ES
dc.subjectCetacean populationses_ES
dc.subjectWhaleses_ES
dc.subjectBallenases_ES
dc.subjectCetáceoses_ES
dc.titleBlue whale population structure along the eastern south pacific ocean: evidence of more than one populationes_ES
dc.typeArtículoes_ES

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Blue whale population structure along the eastern South Pacific Ocean.pdf
Size:
44.21 KB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Artículos
Identidad del Fin del MundoUniversidad de Magallanes• Avenida Bulnes 01855 • Punta Arenas • ChileTeléfono: +56 61 207135 • Email: walter.molina@umag.clSistema desarrollado por Prodigio Consultores en Sistema Dspace