Molecular markers reveal spatially segregated cryptic species in a critically endangered fish, the common skate (Dipturus batis).

Proceedings. Biological Sciences
Andrew M GriffithsMartin J Genner

Abstract

Many sharks and skates are particularly vulnerable to overfishing because of their large size, slow growth, late maturity and low fecundity. In Europe dramatic population declines have taken place in common skate (Dipturus batis L.), one of the largest demersal fish in regional shelf seas, leading to extirpations from substantial parts of its former range. Here we report the discovery of cryptic species in common skate collected from the northeast Atlantic continental shelf. Data from nuclear microsatellite markers indicated two clearly distinct clades and phylogenetic analysis of mitochondrial DNA sequences demonstrated monophyly of each one of them. Capture locations showed evidence of strong spatial segregation, with one taxon occurring mainly in waters off the southern British Isles and around Rockall, while the other was restricted to more northerly shelf waters. These apparently cryptic species showed overlapping substrate and depth preferences, but distributional limits were closely related to temperature gradients, potentially indicating thermal limits to their distributions. This discovery of hidden diversity within a large, critically endangered marine vertebrate demonstrates how marine biodiversity can be underestima...Continue Reading

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Citations

Sep 15, 2015·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Hafiz Muhammad TahirAtif Yaqub
Nov 20, 2014·BMC Evolutionary Biology·Pierre FeutryPeter M Grewe
May 4, 2013·Journal of Fish Biology·C Izzo, E B Drew
Jun 22, 2013·Ecology and Evolution·Robert HarnimanMery L Martinez
Jun 13, 2015·Royal Society Open Science·Chrysoula GubiliAndrew M Griffiths
Oct 21, 2014·PloS One·Joseph J BizzarroAdam P Summers
Apr 16, 2016·Global Change Biology·Camilla SguottiGeorg H Engelhard
Aug 4, 2020·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Noorul-Azliana JamaludinSiti-Azizah Mohd Nor
Jun 11, 2019·PeerJ·Pierluigi CarbonaraMaria Cristina Follesa
May 20, 2011·Integrative and Comparative Biology·Maria P MigliettaFrancesco Santini
Jan 19, 2021·Mitochondrial DNA. Part B, Resources·Aurélien DelavalLeslie R Noble

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