Assessing the reproductive biology of the Greenland shark ( Somniosus microcephalus )
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 a...
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2020
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Online Access: | https://curis.ku.dk/portal/da/publications/assessing-the-reproductive-biology-of-the-greenland-shark-somniosus-microcephalus(d4259560-9081-4705-9dc0-58c6997badad).html https://doi.org/10.1371/journal.pone.0238986 https://curis.ku.dk/ws/files/250868531/Assessing_the_reproductive_biology_of_the_Greenland_shark_Somniosus_microcephalus_.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/d4259560-9081-4705-9dc0-58c6997badad 2024-05-19T07:36:14+00:00 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. 2020 application/pdf https://curis.ku.dk/portal/da/publications/assessing-the-reproductive-biology-of-the-greenland-shark-somniosus-microcephalus(d4259560-9081-4705-9dc0-58c6997badad).html https://doi.org/10.1371/journal.pone.0238986 https://curis.ku.dk/ws/files/250868531/Assessing_the_reproductive_biology_of_the_Greenland_shark_Somniosus_microcephalus_.pdf eng eng info:eu-repo/semantics/openAccess 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 , vol. 15 , no. 10 , e0238986 . https://doi.org/10.1371/journal.pone.0238986 article 2020 ftcopenhagenunip https://doi.org/10.1371/journal.pone.0238986 2024-05-02T00:33:11Z 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. Article in Journal/Newspaper Arctic Greenland Somniosus microcephalus University of Copenhagen: Research PLOS ONE 15 10 e0238986 |
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Open Polar |
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University of Copenhagen: Research |
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ftcopenhagenunip |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Nielsen, Julius Hedeholm, Rasmus B. Lynghammar, Arve McClusky, Leon M. Berland, Bjørn Steffensen, John F. Christiansen, Jørgen S. |
spellingShingle |
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 ) |
author_facet |
Nielsen, Julius Hedeholm, Rasmus B. Lynghammar, Arve McClusky, Leon M. Berland, Bjørn Steffensen, John F. Christiansen, Jørgen S. |
author_sort |
Nielsen, Julius |
title |
Assessing the reproductive biology of the Greenland shark ( Somniosus microcephalus ) |
title_short |
Assessing the reproductive biology of the Greenland shark ( Somniosus microcephalus ) |
title_full |
Assessing the reproductive biology of the Greenland shark ( Somniosus microcephalus ) |
title_fullStr |
Assessing the reproductive biology of the Greenland shark ( Somniosus microcephalus ) |
title_full_unstemmed |
Assessing the reproductive biology of the Greenland shark ( Somniosus microcephalus ) |
title_sort |
assessing the reproductive biology of the greenland shark ( somniosus microcephalus ) |
publishDate |
2020 |
url |
https://curis.ku.dk/portal/da/publications/assessing-the-reproductive-biology-of-the-greenland-shark-somniosus-microcephalus(d4259560-9081-4705-9dc0-58c6997badad).html https://doi.org/10.1371/journal.pone.0238986 https://curis.ku.dk/ws/files/250868531/Assessing_the_reproductive_biology_of_the_Greenland_shark_Somniosus_microcephalus_.pdf |
genre |
Arctic Greenland Somniosus microcephalus |
genre_facet |
Arctic Greenland Somniosus microcephalus |
op_source |
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 , vol. 15 , no. 10 , e0238986 . https://doi.org/10.1371/journal.pone.0238986 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0238986 |
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PLOS ONE |
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15 |
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10 |
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e0238986 |
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