Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus)

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Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus). / Nielsen, Julius; Hedeholm, Rasmus B.; Lynghammar, Arve; McClusky, Leon M.; Berland, Bjørn; Steffensen, John F.; Christiansen, Jørgen S.

In: PLoS ONE, Vol. 15, No. 10, e0238986, 2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Nielsen, J, Hedeholm, RB, Lynghammar, A, McClusky, LM, Berland, B, Steffensen, JF & Christiansen, JS 2020, 'Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus)', PLoS ONE, vol. 15, no. 10, e0238986. https://doi.org/10.1371/journal.pone.0238986

APA

Nielsen, J., Hedeholm, R. B., Lynghammar, A., McClusky, L. M., Berland, B., Steffensen, J. F., & Christiansen, J. S. (2020). Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus). PLoS ONE, 15(10), [e0238986]. https://doi.org/10.1371/journal.pone.0238986

Vancouver

Nielsen J, Hedeholm RB, Lynghammar A, McClusky LM, Berland B, Steffensen JF et al. Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus). PLoS ONE. 2020;15(10). e0238986. https://doi.org/10.1371/journal.pone.0238986

Author

Nielsen, Julius ; Hedeholm, Rasmus B. ; Lynghammar, Arve ; McClusky, Leon M. ; Berland, Bjørn ; Steffensen, John F. ; Christiansen, Jørgen S. / Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus). In: PLoS ONE. 2020 ; Vol. 15, No. 10.

Bibtex

@article{d4259560908147059dc058c6997badad,
title = "Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus)",
abstract = "The Greenland shark (Somniosus microcephalus, Squaliformes: Somniosidae) is a longlived Arctic top predator, which in combination with the high historical and modern fishing pressures, has made it subject to increased scientific focus in recent years. Key aspects of reproduction are not well known as exemplified by sparse and contradictory information e.g. on birth size and number of pups per pregnancy. This study represents the first comprehensive work on Greenland shark reproductive biology based on data from 312 specimens collected over the past 60 years. We provide guidelines quantifying reproductive parameters to assess specific maturation stages, as well as calculate body length-at-maturity (TL50) which was 2.84±0.06 m for males and 4.19±0.04 m for females. From the available information on the ovarian fecundity of Greenland sharks as well as a meta-analysis of Squaliform reproductive parameters, we estimate up to 200-324 pups per pregnancy (depending on maternal size) with a body length-at-birth of 35-45 cm. These estimates remain to be verified by future observations from gravid Greenland sharks.",
author = "Julius Nielsen and Hedeholm, {Rasmus B.} and Arve Lynghammar and McClusky, {Leon M.} and Bj{\o}rn Berland and Steffensen, {John F.} and Christiansen, {J{\o}rgen S.}",
year = "2020",
doi = "10.1371/journal.pone.0238986",
language = "English",
volume = "15",
journal = "PLoS ONE",
issn = "1932-6203",
publisher = "Public Library of Science",
number = "10",

}

RIS

TY - JOUR

T1 - Assessing the reproductive biology of the Greenland shark (Somniosus microcephalus)

AU - Nielsen, Julius

AU - Hedeholm, Rasmus B.

AU - Lynghammar, Arve

AU - McClusky, Leon M.

AU - Berland, Bjørn

AU - Steffensen, John F.

AU - Christiansen, Jørgen S.

PY - 2020

Y1 - 2020

N2 - The Greenland shark (Somniosus microcephalus, Squaliformes: Somniosidae) is a longlived Arctic top predator, which in combination with the high historical and modern fishing pressures, has made it subject to increased scientific focus in recent years. Key aspects of reproduction are not well known as exemplified by sparse and contradictory information e.g. on birth size and number of pups per pregnancy. This study represents the first comprehensive work on Greenland shark reproductive biology based on data from 312 specimens collected over the past 60 years. We provide guidelines quantifying reproductive parameters to assess specific maturation stages, as well as calculate body length-at-maturity (TL50) which was 2.84±0.06 m for males and 4.19±0.04 m for females. From the available information on the ovarian fecundity of Greenland sharks as well as a meta-analysis of Squaliform reproductive parameters, we estimate up to 200-324 pups per pregnancy (depending on maternal size) with a body length-at-birth of 35-45 cm. These estimates remain to be verified by future observations from gravid Greenland sharks.

AB - The Greenland shark (Somniosus microcephalus, Squaliformes: Somniosidae) is a longlived Arctic top predator, which in combination with the high historical and modern fishing pressures, has made it subject to increased scientific focus in recent years. Key aspects of reproduction are not well known as exemplified by sparse and contradictory information e.g. on birth size and number of pups per pregnancy. This study represents the first comprehensive work on Greenland shark reproductive biology based on data from 312 specimens collected over the past 60 years. We provide guidelines quantifying reproductive parameters to assess specific maturation stages, as well as calculate body length-at-maturity (TL50) which was 2.84±0.06 m for males and 4.19±0.04 m for females. From the available information on the ovarian fecundity of Greenland sharks as well as a meta-analysis of Squaliform reproductive parameters, we estimate up to 200-324 pups per pregnancy (depending on maternal size) with a body length-at-birth of 35-45 cm. These estimates remain to be verified by future observations from gravid Greenland sharks.

U2 - 10.1371/journal.pone.0238986

DO - 10.1371/journal.pone.0238986

M3 - Journal article

C2 - 33027263

AN - SCOPUS:85092645931

VL - 15

JO - PLoS ONE

JF - PLoS ONE

SN - 1932-6203

IS - 10

M1 - e0238986

ER -

ID: 250868527