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Gametogenesis of an intertidal population of Mytilus trossulus in NW Greenland: not a limitation for potential Arctic range expansion

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Gametogenesis of an intertidal population of Mytilus trossulus in NW Greenland: not a limitation for potential Arctic range expansion. / Thyrring, Jakob; Jensen, Kurt Thomas; Sejr, Mikael Kristian.

In: Marine Ecology - Progress Series, Vol. 574, 04.07.2017, p. 65-74.

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@article{fe6b50ff15b2419ebddd8465084c80c4,
title = "Gametogenesis of an intertidal population of Mytilus trossulus in NW Greenland: not a limitation for potential Arctic range expansion",
abstract = "The drivers determining species{\textquoteright} northern distribution limits remain elusive and, combined with inadequate knowledge of past and current distribution ranges, this prevents accurate determination of potential changes in the Arctic. The northernmost population of the bivalve Mytilus trossulus is found in north Greenland, an area characterised by low temperature, prolonged winters and a short productive period. This population, therefore, provides a unique opportunity to study whether a temperate bivalve species can sustain a population near its pole-ward distribution limit through reproduction. We assessed gametogenesis and biochemical composition in intertidal M. trossulus specimens during the ice-free period (July−September). Results showed that the qualitative traits of gametogenesis and oocyte production in this population were comparable to M. trossulus found in temperate regions. In addition, we found that M. trossulus larvae settle annually in the lowest intertidal zone, indicating successful fertilization of eggs and larval survival. Our combined results suggest that gonadal development or larval sur- vival do not limit the northern distribution of this species, even in a region characterized by limited food supply and sub-zero water temperatures for 9 mo of the year. Instead, for this marine invertebrate with a larval life-stage, oceanographic conditions and dispersal barriers, rather than physiological constraints, could be more important in determining the northern range limit.",
keywords = "Arctic, benthos, biochemical, blue mussels, glycogen, Gametogenesis, spawning, temperature, Oogenesis",
author = "Jakob Thyrring and Jensen, {Kurt Thomas} and Sejr, {Mikael Kristian}",
year = "2017",
month = jul,
day = "4",
doi = "10.3354/meps12179",
language = "English",
volume = "574",
pages = "65--74",
journal = "Marine Ecology - Progress Series",
issn = "0171-8630",
publisher = "Inter-Research",

}

RIS

TY - JOUR

T1 - Gametogenesis of an intertidal population of Mytilus trossulus in NW Greenland: not a limitation for potential Arctic range expansion

AU - Thyrring, Jakob

AU - Jensen, Kurt Thomas

AU - Sejr, Mikael Kristian

PY - 2017/7/4

Y1 - 2017/7/4

N2 - The drivers determining species’ northern distribution limits remain elusive and, combined with inadequate knowledge of past and current distribution ranges, this prevents accurate determination of potential changes in the Arctic. The northernmost population of the bivalve Mytilus trossulus is found in north Greenland, an area characterised by low temperature, prolonged winters and a short productive period. This population, therefore, provides a unique opportunity to study whether a temperate bivalve species can sustain a population near its pole-ward distribution limit through reproduction. We assessed gametogenesis and biochemical composition in intertidal M. trossulus specimens during the ice-free period (July−September). Results showed that the qualitative traits of gametogenesis and oocyte production in this population were comparable to M. trossulus found in temperate regions. In addition, we found that M. trossulus larvae settle annually in the lowest intertidal zone, indicating successful fertilization of eggs and larval survival. Our combined results suggest that gonadal development or larval sur- vival do not limit the northern distribution of this species, even in a region characterized by limited food supply and sub-zero water temperatures for 9 mo of the year. Instead, for this marine invertebrate with a larval life-stage, oceanographic conditions and dispersal barriers, rather than physiological constraints, could be more important in determining the northern range limit.

AB - The drivers determining species’ northern distribution limits remain elusive and, combined with inadequate knowledge of past and current distribution ranges, this prevents accurate determination of potential changes in the Arctic. The northernmost population of the bivalve Mytilus trossulus is found in north Greenland, an area characterised by low temperature, prolonged winters and a short productive period. This population, therefore, provides a unique opportunity to study whether a temperate bivalve species can sustain a population near its pole-ward distribution limit through reproduction. We assessed gametogenesis and biochemical composition in intertidal M. trossulus specimens during the ice-free period (July−September). Results showed that the qualitative traits of gametogenesis and oocyte production in this population were comparable to M. trossulus found in temperate regions. In addition, we found that M. trossulus larvae settle annually in the lowest intertidal zone, indicating successful fertilization of eggs and larval survival. Our combined results suggest that gonadal development or larval sur- vival do not limit the northern distribution of this species, even in a region characterized by limited food supply and sub-zero water temperatures for 9 mo of the year. Instead, for this marine invertebrate with a larval life-stage, oceanographic conditions and dispersal barriers, rather than physiological constraints, could be more important in determining the northern range limit.

KW - Arctic

KW - benthos

KW - biochemical

KW - blue mussels

KW - glycogen

KW - Gametogenesis

KW - spawning

KW - temperature

KW - Oogenesis

U2 - 10.3354/meps12179

DO - 10.3354/meps12179

M3 - Journal article

VL - 574

SP - 65

EP - 74

JO - Marine Ecology - Progress Series

JF - Marine Ecology - Progress Series

SN - 0171-8630

ER -