Phylogeography and population dynamics of the white-sided dolphin (Lagenorhynchus acutus) in the North Atlantic

Banguera-Hinestroza, Eulalia; Evans, Peter G. H.; Mirimin, Luca; Reid, Robert J.; Mikkelsen, Bjarni; Couperus, A.S.; Deaville, Rob; Rogan, Emer; Hoelzel, A. Rus

doi:10.1007/s10592-014-0578-z

Cited by 13 publications

(26 citation statements)

References 65 publications

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“…() investigating habitat suitability for grey seals ( Halichoerus grypus ), during the LGM the higher latitudes of the North Atlantic Ocean were isolated, and only the Biscay Gulf and Iberian Peninsula were suitable for habitation. Our data suggest that population differentiation was generated in this region following the LGM, and a post‐glacial expansion associated with population structuring in the eastern North Atlantic has been discussed for other marine mammals (Banguera‐Hinestroza et al., , ; Fontaine et al., ). Of course earlier glacial/ interglacial transitions during the Pleistocene Milankovitch cycles may have had the potential to generate structure in this region as well.…”

Section: Discussionsupporting

confidence: 67%

“…For example, studies report that modern harbour porpoise ( Phocoena phocoena ) populations in the eastern North Atlantic and North Sea have evolved during the late Pleistocene (Martinez‐Bakker, Sell, Swanson, Kelly, & Tallmon, ) or early Holocene (see Fontaine et al., ), including phenotypic adaptation and differential prey choice suited to different habitats (de Luna Lopez et al., ; Fontaine et al., ). A similar effect was suggested for Lagenorhynchus species in the North Atlantic (Banguera‐Hinestroza et al., ).…”

Section: Introductionsupporting

confidence: 81%

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Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters

Gkafas

Exadactylos

Rogan

et al. 2017

Journal of Biogeography

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Aim We investigated the population genetic structure of a highly mobile marine species, the striped dolphin, Stenella coeruleoalba (Meyen, 1833), along a geographical range with habitat transitions and historical dynamics to identify the causes of genetic divergence, and to assess the effect of past climate change on demography and population connectivity. Location North‐east Atlantic Ocean and Mediterranean Sea. Methods Twenty microsatellite loci were used in conjunction with coalescent methods to investigate the genetic structure and demographic history of striped dolphins (Stenella coeruleoalba) in the Mediterranean Sea and eastern North Atlantic Ocean. Approximate Bayesian modelling was used to compare the support for alternative scenarios for the pattern of divergence over time in the context of known geographical transitions and environmental change over the course of the Quaternary. Results We describe a novel pattern of structure among the extant populations along north–south and east–west axes. Modern gene flow shows strong directionality from north‐east to south and west in the North Atlantic, and from west to east in the Mediterranean. On a temporal scale we found evidence for a progression starting with a division between the North Atlantic and Mediterranean Sea populations during the middle Pleistocene, followed by a division within the Mediterranean between the east and west basins towards the end of the Pleistocene, and finally an east–west division in the eastern North Atlantic at the start of the Holocene. Main conclusions In the context of known population structure for other marine species along the same geographical range, our data facilitate inference of the more general processes that shaped patterns of biogeography across this region through the environmental transitions of the Quaternary. In particular, Pleistocene era divisions apparently reflect strong physical habitat boundaries, with later divisions associated with climate warming in the Holocene.

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Section: Discussionsupporting

confidence: 67%

Section: Introductionsupporting

confidence: 81%

Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters

Gkafas

Exadactylos

Rogan

et al. 2017

Journal of Biogeography

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“…; Banguera‐Hinestroza et al . ). The scenario testing also detected an expansion of populations as the main event shaping the demographic history in both seas.…”

Section: Discussionmentioning

confidence: 97%

Contemporary genetic structure and postglacial demographic history of the black scorpionfish, Scorpaena porcus, in the Mediterranean and the Black Seas

et al. 2016

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Understanding the distribution of genetic diversity in the light of past demographic events linked with climatic shifts will help to forecast evolutionary trajectories of ecosystems within the current context of climate change. In this study, mitochondrial sequences and microsatellite loci were analysed using traditional population genetic approaches together with Bayesian dating and the more recent approximate Bayesian computation scenario testing. The genetic structure and demographic history of a commercial fish, the black scorpionfish, Scorpaena porcus, was investigated throughout the Mediterranean and Black Seas. The results suggest that the species recently underwent population expansions, in both seas, likely concomitant with the warming period following the Last Glacial Maximum, 20 000 years ago. A weak contemporaneous genetic differentiation was identified between the Black Sea and the Mediterranean Sea. However, the genetic diversity was similar for populations of the two seas, suggesting a high number of colonizers entered the Black Sea during the interglacial period and/or the presence of a refugial population in the Black Sea during the glacial period. Finally, within seas, an east/west genetic differentiation in the Adriatic seems to prevail, whereas the Black Sea does not show any structured spatial genetic pattern of its population. Overall, these results suggest that the Black Sea is not that isolated from the Mediterranean, and both seas revealed similar evolutionary patterns related to climate change and changes in sea level.

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“…In contrast, no clear substructure was found between NW ( N = 88) and NE ( N = 267) Atlantic white‐sided dolphins (Banguera‐Hinestroza et al . ). Within the NE Atlantic, genetic differentiation was significant between white‐sided dolphins from the Faroe Islands and those from the North Sea and the Scottish coast when considering 322 bp of the mtDNA D‐loop region.…”

Section: Introductionmentioning

confidence: 97%

A genomewide catalogue of single nucleotide polymorphisms in white‐beaked and Atlantic white‐sided dolphins

Fernández

Schubert

Vargas-Velázquez

et al. 2015

Molecular Ecology Resources

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The field of population genetics is rapidly moving into population genomics as the quantity of data generated by high-throughput sequencing platforms increases. In this study, we used restriction-site-associated DNA sequencing (RADSeq) to recover genomewide genotypes from 70 white-beaked (Lagenorhynchus albirostris) and 43 Atlantic white-sided dolphins (L. acutus) gathered throughout their north-east Atlantic distribution range. Both species are at a high risk of being negatively affected by climate change. Here, we provide a resource of 38,240 RAD-tags and 52,981 nuclear SNPs shared between both species. We have estimated overall higher levels of nucleotide diversity in white-sided (π = 0.0492 ± 0.0006%) than in white-beaked dolphins (π = 0.0300 ± 0.0004%). White-sided dolphins sampled in the Faroe Islands, belonging to two pods (N = 7 and N = 11), showed similar levels of diversity (π = 0.0317 ± 0.0007% and 0.0267 ± 0.0006%, respectively) compared to unrelated individuals of the same species sampled elsewhere (e.g. π = 0.0285 ± 0.0007% for 11 Scottish individuals). No evidence of higher levels of kinship within pods can be derived from our analyses. When identifying the most likely number of genetic clusters among our sample set, we obtained an estimate of two to four clusters, corresponding to both species and possibly, two further clusters within each species. A higher diversity and lower population structuring was encountered in white-sided dolphins from the north-east Atlantic, in line with their preference for pelagic waters, as opposed to white-beaked dolphins that have a more patchy distribution, mainly across continental shelves.

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Phylogeography and population dynamics of the white-sided dolphin (Lagenorhynchus acutus) in the North Atlantic

Cited by 13 publications

References 65 publications

Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters

Biogeography and temporal progression during the evolution of striped dolphin population structure in European waters

Contemporary genetic structure and postglacial demographic history of the black scorpionfish, Scorpaena porcus, in the Mediterranean and the Black Seas

A genomewide catalogue of single nucleotide polymorphisms in white‐beaked and Atlantic white‐sided dolphins

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