A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea
The snow crab Chionoecetes opilioFabricius, 1788 is a newly established species in the Barents Sea. Since the first individuals were recorded in 1996, the population has increased and a fishery was initiated in 2012. Mature female snow crab caught in the central Barents Sea were investigated with re...
Published in: | Journal of Crustacean Biology |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/2637392 https://doi.org/10.1093/jcbiol/ruz039 |
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ftimr:oai:imr.brage.unit.no:11250/2637392 2023-05-15T15:38:31+02:00 A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea Danielsen, Hanna Ellerine Helle Hjelset, Ann Merete Bluhm, Bodil Hvingel, Carsten Agnalt, Ann-Lisbeth 2019 application/pdf http://hdl.handle.net/11250/2637392 https://doi.org/10.1093/jcbiol/ruz039 eng eng Journal of Crustacean Biology. 2019, 39 (4), 485-492. urn:issn:0278-0372 http://hdl.handle.net/11250/2637392 https://doi.org/10.1093/jcbiol/ruz039 cristin:1736340 485-492 39 Journal of Crustacean Biology 4 Journal article Peer reviewed 2019 ftimr https://doi.org/10.1093/jcbiol/ruz039 2021-09-23T20:15:50Z The snow crab Chionoecetes opilioFabricius, 1788 is a newly established species in the Barents Sea. Since the first individuals were recorded in 1996, the population has increased and a fishery was initiated in 2012. Mature female snow crab caught in the central Barents Sea were investigated with regards to fecundity. Ovigerous females (N = 185) ranged from 48 to 100 mm carapace width (CW). Fecundity was 15,000–184,000 eggs per female with 100% clutch fullness, and was positively related to body size (fecundity = 0.233 * CW2.944) consistent with relationships described for other snow crab populations. Eight females had less than 100% clutch fullness, two of which had only 10% clutch fullness along with an old shell, indicating senescence. Dry egg weight was on average 0.065 mg and was hardly affected by CW. Females across all sizes invest similarly in individual eggs, and potential size-dependent differences in fitness are more related to the number of eggs produced than to the investment into individual eggs. We conclude that the fecundity-at-size of females is overall comparable to that of other populations, although the presence of large females results in high maximum individual fecundity estimates. publishedVersion Article in Journal/Newspaper Barents Sea Chionoecetes opilio Snow crab Institute for Marine Research: Brage IMR Barents Sea Journal of Crustacean Biology 39 4 485 492 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The snow crab Chionoecetes opilioFabricius, 1788 is a newly established species in the Barents Sea. Since the first individuals were recorded in 1996, the population has increased and a fishery was initiated in 2012. Mature female snow crab caught in the central Barents Sea were investigated with regards to fecundity. Ovigerous females (N = 185) ranged from 48 to 100 mm carapace width (CW). Fecundity was 15,000–184,000 eggs per female with 100% clutch fullness, and was positively related to body size (fecundity = 0.233 * CW2.944) consistent with relationships described for other snow crab populations. Eight females had less than 100% clutch fullness, two of which had only 10% clutch fullness along with an old shell, indicating senescence. Dry egg weight was on average 0.065 mg and was hardly affected by CW. Females across all sizes invest similarly in individual eggs, and potential size-dependent differences in fitness are more related to the number of eggs produced than to the investment into individual eggs. We conclude that the fecundity-at-size of females is overall comparable to that of other populations, although the presence of large females results in high maximum individual fecundity estimates. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Danielsen, Hanna Ellerine Helle Hjelset, Ann Merete Bluhm, Bodil Hvingel, Carsten Agnalt, Ann-Lisbeth |
spellingShingle |
Danielsen, Hanna Ellerine Helle Hjelset, Ann Merete Bluhm, Bodil Hvingel, Carsten Agnalt, Ann-Lisbeth A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea |
author_facet |
Danielsen, Hanna Ellerine Helle Hjelset, Ann Merete Bluhm, Bodil Hvingel, Carsten Agnalt, Ann-Lisbeth |
author_sort |
Danielsen, Hanna Ellerine Helle |
title |
A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea |
title_short |
A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea |
title_full |
A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea |
title_fullStr |
A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea |
title_full_unstemmed |
A first fecundity study of the female snow crab Chionoecetes opilio Fabricius, 1788 (Decapoda: Brachyura: Oregoniidae) of the newly established population in the Barents Sea |
title_sort |
first fecundity study of the female snow crab chionoecetes opilio fabricius, 1788 (decapoda: brachyura: oregoniidae) of the newly established population in the barents sea |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2637392 https://doi.org/10.1093/jcbiol/ruz039 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Chionoecetes opilio Snow crab |
genre_facet |
Barents Sea Chionoecetes opilio Snow crab |
op_source |
485-492 39 Journal of Crustacean Biology 4 |
op_relation |
Journal of Crustacean Biology. 2019, 39 (4), 485-492. urn:issn:0278-0372 http://hdl.handle.net/11250/2637392 https://doi.org/10.1093/jcbiol/ruz039 cristin:1736340 |
op_doi |
https://doi.org/10.1093/jcbiol/ruz039 |
container_title |
Journal of Crustacean Biology |
container_volume |
39 |
container_issue |
4 |
container_start_page |
485 |
op_container_end_page |
492 |
_version_ |
1766369510514753536 |