Data from: Genetics redraws pelagic biogeography of Calanus

Planktonic copepods of the genus Calanus play a central role in North Atlantic/Arctic marine food webs. Here, using molecular markers, we redrew the distributional ranges of Calanus species inhabiting the North Atlantic and Arctic Oceans and revealed much wider and more broadly overlapping distribut...

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Bibliographic Details
Main Authors: Choquet, Marvin, Hatlebakk, Maja, Dhanasiri, Anusha K.S., Kosobokova, Ksenia, Smolina, Irina, Søreide, Janne E., Svensen, Camilla, Melle, Webjørn, Kwaśniewski, Sławomir, Eiane, Ketil, Daase, Malin, Tverberg, Vigdis, Skreslet, Stig, Bucklin, Ann, Hoarau, Galice
Format: Dataset
Language:unknown
Published: 2017
Subjects:
Calanus spp
population differentiation
genotypes
Calanus helgolandicus
ecosystem shift
InDels
fjord
genetics
Calanus finmarchicus
species identification
Calanus glacialis
Calanus hyperboreus
Arctic
Atlantic Arctic
Atlantic-Arctic
North Atlantic
Zooplankton
Copepods
Online Access:https://zenodo.org/record/4963600
https://doi.org/10.5061/dryad.tq71j
Description
Summary:Planktonic copepods of the genus Calanus play a central role in North Atlantic/Arctic marine food webs. Here, using molecular markers, we redrew the distributional ranges of Calanus species inhabiting the North Atlantic and Arctic Oceans and revealed much wider and more broadly overlapping distributions than previously described. The Arctic shelf species, C. glacialis, dominated the zooplankton assemblage of many Norwegian fjords, where only C. finmarchicus has been reported previously. In these fjords, high occurrences of the Arctic species C. hyperboreus were also found. Molecular markers revealed that the most common method of species identification, prosome length, cannot reliably discriminate the species in Norwegian fjords. Differences in degree of genetic differentiation among fjord populations of the two species suggested that C. glacialis is a more permanent resident of the fjords than C. finmarchicus. We found no evidence of hybridisation between the species. Our results indicate a critical need for the wider use of molecular markers to reliably identify and discriminate these morphologically-similar copepod species, which serve as important indicators of climate responses. Genotypes of microsatellites and InDels markers for Calanus spp.Sheet 1: Genotypes of 10 microsatellites used for population differentiation study of Calanus finmarchicus and Calanus glacialis. Sheets 2-3: Genotypes of 6 InDels markers used for species identification of Calanus species in the North Atlantic and the Arctic Oceans.Genotypes_Microsatellites_InDels_BiologyLetters.xlsx

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