FN Archimer Export Format
PT J
TI From Settlers to Subspecies: Genetic Differentiation in Commerson’s Dolphins Between South America and the Kerguelen Islands
BT 
AF Kraft, Sebastián
   Pérez-Alvarez, MJosé
   Olavarría, Carlos
   Moraga, Rodrigo
   Baker, C. Scott
   Steel, Debbie
   Tixier, Paul
   Guinet, Christophe
   Viricel, Amelia
   Brickle, Paul
   Costa, Marina
   Crespo, Enrique
   Durante, Cristian
   Loizaga, Rocio
   Poulin, Elie
AS 1:1;2:1,2,3,4;3:3,5;4:3;5:6;6:6;7:7,8;8:8;9:9;10:10;11:11;12:11;13:11;14:11;15:1,4;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;
C1 Laboratorio de Ecología Molecular, Facultad de Ciencias, Instituto de Ecología y Biodiversidad (IEB), Universidad de Chile, Santiago, Chile
   Facultad de Ciencias, Escuela de Medicina Veterinaria, Universidad Mayor, Santiago, Chile
   Centro de Investigación Eutropia, Santiago, Chile
   Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), Santiago, Chile
   Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena, Chile
   Marine Mammal Institute, Oregon State University, Newport, OR, United States
   MARBEC, Université de Montpellier-CNRS-IFREMER-IRD, Séte, France
   Centre d’Etudes Biologiques de Chizé (CEBC) CNRS-ULR, UMR 7273, Villiers-en-Bois, France
   Littoral Environnement et Sociétés (LIENSs), UMR 7266, CNRS-Université de la Rochelle, La Rochelle, France
   South Atlantic Environmental Research Institute (SAERI), Stanley Cottage, Stanley, Falkland Islands
   Laboratorio de Mamíferos Marinos, Centro para el Estudio de Sistemas Marinos (CESIMAR-CONICET), Puerto Madryn, Argentina
C2 UNIV CHILE, CHILE
   UNIV MAYOR, CHILE
   CENTRO INVESTIG EUTROPIA, CHILE
   BASE, CHILE
   CEAZA, CHILE
   UNIV OREGON STATE, USA
   UNIV MONTPELLIER, FRANCE
   CNRS, FRANCE
   UNIV LA ROCHELLE, FRANCE
   SAERI, FALKLAND ISLANDS
   CESIMAR-CONICET, ARGENTINA
UM MARBEC
IN WOS Cotutelle UMR
   DOAJ
   copubli-france
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 5.247
TC 1
UR https://archimer.ifremer.fr/doc/00742/85412/90474.pdf
   https://archimer.ifremer.fr/doc/00742/85412/90475.pdf
LA English
DT Article
DE ;Cephalorhynchus commersonii;colonization;divergence;last glacial maximum;mitochondrial DNA;phylogeography
AB Commerson’s dolphins (Cephalorhynchus commersonii) are separated into the subspecies C. c. commersonii, found along southern South America (SA) and the Falkland Islands/Islas Malvinas (FI/IM), and C. c. kerguelenensis, restricted to the subantarctic Kerguelen Islands (KI). Following the dispersal model proposed for the genus, the latter is thought to have originated from SA after a long-distance dispersal event. To evaluate this biogeographic scenario, a distribution-wide, balanced sampling of mitochondrial DNA (mtDNA) control region sequences was designed. New tissue samples from southern Chile, Argentina, FI/IM, and KI were added to published sequences from SA and KI, for a total of 256 samples. Genetic diversity indices, genetic and phylogeographic structure, and migration rates were calculated. One haplotype was shared between subspecies, with which all haplotypes of C. c. kerguelenensis formed a distinct group in the haplotype network. A new haplotype for C. c. kerguelenensis is reported. Differentiation in haplotype frequencies was found among localities within the distribution of C. c. commersonii, yet the phylogeographic signal was only statistically significant between subspecies. Coalescent-based historical gene flow estimations indicated migration between the northern and southern portions of the species’ range in SA as well as between SA and the FI/IM, but not between these and the KI. The net nucleotide divergence between dolphins from SA and the FI/IM was lower than the recommended threshold value suggested for delimiting subspecies, unlike that found between C. c. commersonii and C. c. kerguelenensis. The results are consistent with the model of post-glacial colonization of KI by South American C. commersonii, followed by an ongoing divergence process and subspecies status. Thus, C. c. kerguelenensis may represent the most recent diversification step of Cephalorhynchus, where isolation from their source population is driving a process of incipient speciation. 
PY 2021
PD DEC
SO Frontiers In Marine Science
SN 2296-7745
PU Frontiers Media SA
VL 8
UT 000742699300001
DI 10.3389/fmars.2021.782512
ID 85412
ER

EF