[MARMAM] New article on bottlenose dolphin population demographic history, ecology and morphology in the North-east Atlantic
marielouis17 at hotmail.com
Wed Oct 8 10:50:07 PDT 2014
We are pleased to announce the publication of the following article:
Louis M., Fontaine M. C., Spitz J., Schlund E., Dabin W., Deaville R., Caurant F., Cherel Y., Guinet C. and Simon-Bouhet B. 2014. Ecological opportunities and specializations shaped genetic divergence in a highly mobile marine top predator. Proc. R. Soc. B 281(1795): 20141558. (doi:
Environmental conditions can shape genetic and morphological divergence.
Release of new habitats during historical environmental
changes was a major driver of evolutionary
diversification. Here, forces shaping population structure and ecotype
(‘pelagic’ and ‘coastal’) of bottlenose dolphins in
the North-east Atlantic were investigated using complementary
and ecological approaches. Inference of population
demographic history using approximate Bayesian computation indicated
coastal populations were likely founded by the
Atlantic pelagic population after the Last Glacial Maxima probably as a
of newly available coastal ecological niches.
Pelagic dolphins from the Atlantic and the Mediterranean Sea likely
during a period of high productivity in the
Mediterranean Sea. Genetic differentiation between coastal and pelagic
may be maintained by niche specializations, as
indicated by stable isotope and stomach content analyses, and social
The two ecotypes were only weakly morphologically
segregated in contrast to other parts of the World Ocean. This may be
to weak contrasts between coastal and pelagic
habitats and/or a relatively recent divergence. We suggest that
to specialize is a major driver of genetic and
morphological divergence. Combining genetic, ecological and
is essential to understanding the population
structure of mobile and cryptic species.
The article can be download from: http://rspb.royalsocietypublishing.org/content/281/1795/20141558.abstract or you can email me for a copy.
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