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Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? / Nykänen, Milaja; Kaschner, Kristin; Dabin, Willy et al.
In: Journal of Heredity, Vol. 110, No. 6, 09.2019, p. 662-674.

Research output: Contribution to journalArticlepeer-review

HarvardHarvard

Nykänen, M, Kaschner, K, Dabin, W, Brownlow, Davison, NJ, Deaville, R, Garilao, C, Kesner-Reyes, K, Gilbert, MTP, Penrose, R, Islas-Villanueva, V, Wales, N, Ingram, S, Rogan, E, Louis, M & Foote, A 2019, 'Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion?', Journal of Heredity, vol. 110, no. 6, pp. 662-674. https://doi.org/10.1093/jhered/esz039

APA

Nykänen, M., Kaschner, K., Dabin, W., Brownlow, Davison, N. J., Deaville, R., Garilao, C., Kesner-Reyes, K., Gilbert, M. T. P., Penrose, R., Islas-Villanueva, V., Wales, N., Ingram, S., Rogan, E., Louis, M., & Foote, A. (2019). Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? Journal of Heredity, 110(6), 662-674. https://doi.org/10.1093/jhered/esz039

CBE

Nykänen M, Kaschner K, Dabin W, Brownlow, Davison NJ, Deaville R, Garilao C, Kesner-Reyes K, Gilbert MTP, Penrose R, et al. 2019. Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion?. Journal of Heredity. 110(6):662-674. https://doi.org/10.1093/jhered/esz039

MLA

VancouverVancouver

Nykänen M, Kaschner K, Dabin W, Brownlow, Davison NJ, Deaville R et al. Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion? Journal of Heredity. 2019 Sept;110(6):662-674. Epub 2019 Jun 17. doi: 10.1093/jhered/esz039

Author

Nykänen, Milaja ; Kaschner, Kristin ; Dabin, Willy et al. / Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion?. In: Journal of Heredity. 2019 ; Vol. 110, No. 6. pp. 662-674.

RIS

TY - JOUR

T1 - Post-glacial colonization of northern coastal habitat by bottlenose dolphins: A marine leading-edge expansion?

AU - Nykänen, Milaja

AU - Kaschner, Kristin

AU - Dabin, Willy

AU - Brownlow, null

AU - Davison, Nicholas J

AU - Deaville, Rob

AU - Garilao, Christina

AU - Kesner-Reyes, Kathleen

AU - Gilbert, M. Thomas P.

AU - Penrose, Rod

AU - Islas-Villanueva, Valentina

AU - Wales, Nathan

AU - Ingram, Simon

AU - Rogan, Emer

AU - Louis, Marie

AU - Foote, Andrew

PY - 2019/9

Y1 - 2019/9

N2 - Oscillations in the Earth’s temperature and the subsequent retreating and advancing of ice-sheets around the polar regions are thought to have played an important role in shaping the distribution and genetic structuring of contemporary high-latitude populations. After the Last Glacial Maximum (LGM), retreating of the ice-sheets would have enabled early colonizers to rapidly occupy suitable niches to the exclusion of other conspecifics, thereby reducing genetic diversity at the leading-edge. Bottlenose dolphins (genus Tursiops) form distinct coastal and pelagic ecotypes, with finer-scale genetic structuring observed within each ecotype. We reconstruct the postglacial colonization of the Northeast Atlantic (NEA) by bottlenose dolphins using habitat modeling and phylogenetics. The AquaMaps model hindcasted suitable habitat for the LGM in the Atlantic lower latitude waters and parts of the Mediterranean Sea. The time-calibrated phylogeny, constructed with 86 complete mitochondrial genomes including 30 generated for this study and created using a multispecies coalescent model, suggests that the expansion to the available coastal habitat in the NEA happened via founder events starting ~15 000 years ago (95% highest posterior density interval: 4 900–26 400). The founders of the 2 distinct coastal NEA populations comprised as few as 2 maternal lineages that originated from the pelagic population. The low effective population size and genetic diversity estimated for the shared ancestral coastal population subsequent to divergence from the pelagic source population are consistent with leading-edge expansion. These findings highlight the legacy of the Late Pleistocene glacial cycles on the genetic structuring and diversity of contemporary populations.

AB - Oscillations in the Earth’s temperature and the subsequent retreating and advancing of ice-sheets around the polar regions are thought to have played an important role in shaping the distribution and genetic structuring of contemporary high-latitude populations. After the Last Glacial Maximum (LGM), retreating of the ice-sheets would have enabled early colonizers to rapidly occupy suitable niches to the exclusion of other conspecifics, thereby reducing genetic diversity at the leading-edge. Bottlenose dolphins (genus Tursiops) form distinct coastal and pelagic ecotypes, with finer-scale genetic structuring observed within each ecotype. We reconstruct the postglacial colonization of the Northeast Atlantic (NEA) by bottlenose dolphins using habitat modeling and phylogenetics. The AquaMaps model hindcasted suitable habitat for the LGM in the Atlantic lower latitude waters and parts of the Mediterranean Sea. The time-calibrated phylogeny, constructed with 86 complete mitochondrial genomes including 30 generated for this study and created using a multispecies coalescent model, suggests that the expansion to the available coastal habitat in the NEA happened via founder events starting ~15 000 years ago (95% highest posterior density interval: 4 900–26 400). The founders of the 2 distinct coastal NEA populations comprised as few as 2 maternal lineages that originated from the pelagic population. The low effective population size and genetic diversity estimated for the shared ancestral coastal population subsequent to divergence from the pelagic source population are consistent with leading-edge expansion. These findings highlight the legacy of the Late Pleistocene glacial cycles on the genetic structuring and diversity of contemporary populations.

KW - genetic diversity

KW - habitat modeling

KW - Last Glacial Maximum

KW - multispecies coalescent

KW - phylogenetics

KW - time-dependency

U2 - 10.1093/jhered/esz039

DO - 10.1093/jhered/esz039

M3 - Article

VL - 110

SP - 662

EP - 674

JO - Journal of Heredity

JF - Journal of Heredity

SN - 0022-1503

IS - 6

ER -