New insights into the biology of Calanus spp. (Copepoda) males in the Arctic
Adult males of Calanus copepods in the Arctic are mainly observed between late autumn and late spring, and are seldom recorded during summer. Due to logistical constraints, there are still relatively few studies on zooplankton in high-latitude regions during the winter, and subsequently, little is k...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2018
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Online Access: | https://pure.uhi.ac.uk/en/publications/0c871157-651b-403b-bd91-ac282b435699 https://doi.org/10.3354/meps12788 https://pureadmin.uhi.ac.uk/ws/files/49032358/m607p053.pdf http://www.scopus.com/inward/record.url?scp=85058159222&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85058159222&partnerID=8YFLogxK |
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ftuhipublicatio:oai:pure.atira.dk:publications/0c871157-651b-403b-bd91-ac282b435699 2024-02-04T09:56:31+01:00 New insights into the biology of Calanus spp. (Copepoda) males in the Arctic Daase, Malin Kosobokova, Ksenia Last, Kim S. Cohen, Jonathan H. Choquet, Marvin Hatlebakk, Maja Søreide, Janne E. 2018-12-06 application/pdf https://pure.uhi.ac.uk/en/publications/0c871157-651b-403b-bd91-ac282b435699 https://doi.org/10.3354/meps12788 https://pureadmin.uhi.ac.uk/ws/files/49032358/m607p053.pdf http://www.scopus.com/inward/record.url?scp=85058159222&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85058159222&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Daase , M , Kosobokova , K , Last , K S , Cohen , J H , Choquet , M , Hatlebakk , M & Søreide , J E 2018 , ' New insights into the biology of Calanus spp. (Copepoda) males in the Arctic ' , Marine Ecology Progress Series , vol. 607 , pp. 53-69 . https://doi.org/10.3354/meps12788 Calanus glacialis Mating Metabolism Polar night Sex ratio Svalbard article 2018 ftuhipublicatio https://doi.org/10.3354/meps12788 2024-01-11T23:21:41Z Adult males of Calanus copepods in the Arctic are mainly observed between late autumn and late spring, and are seldom recorded during summer. Due to logistical constraints, there are still relatively few studies on zooplankton in high-latitude regions during the winter, and subsequently, little is known about Calanus males. Here, we present data on abundance, spatial distribution, prosome length, lipid content, respiration and swimming activity of Calanus adults, along with adult sex ratios in Calanus populations from 5 Arctic fjords in Svalbard, Norway (78−80° N) during the polar night in January 2015, 2016 and 2017. Adult males and females of Calanus were observed at all locations and occurred throughout the entire water column. Morphological examination and molecular identification of Calanus males proved that all males encountered belong to Calanus glacialis, even in the fjords where overwintering copepodite stage CV of C. finmarchicus dominated at the time. Adult sex ratios in C. glacialis populations varied from 1 male per 4 females to 2 males per female. From 3 to 18% of females carried spermatophores attached to the genital segment. Lipid content in males was slightly higher than in females. Shipboard experiments showed that males had higher swimming activity and respiration rates than females. Our observations indicate that adult males of C. glacialis stay active and demonstrate active mating behavior in mid-winter, and that the mating phenology of C. glacialis is decoupled from that of C. finmarchicus in the study area in January. Article in Journal/Newspaper Arctic Arctic Calanus glacialis polar night Svalbard Zooplankton Copepods University of the Highlands and Islands: Research Database of UHI Arctic Norway Svalbard Marine Ecology Progress Series 607 53 69 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
Calanus glacialis Mating Metabolism Polar night Sex ratio Svalbard |
spellingShingle |
Calanus glacialis Mating Metabolism Polar night Sex ratio Svalbard Daase, Malin Kosobokova, Ksenia Last, Kim S. Cohen, Jonathan H. Choquet, Marvin Hatlebakk, Maja Søreide, Janne E. New insights into the biology of Calanus spp. (Copepoda) males in the Arctic |
topic_facet |
Calanus glacialis Mating Metabolism Polar night Sex ratio Svalbard |
description |
Adult males of Calanus copepods in the Arctic are mainly observed between late autumn and late spring, and are seldom recorded during summer. Due to logistical constraints, there are still relatively few studies on zooplankton in high-latitude regions during the winter, and subsequently, little is known about Calanus males. Here, we present data on abundance, spatial distribution, prosome length, lipid content, respiration and swimming activity of Calanus adults, along with adult sex ratios in Calanus populations from 5 Arctic fjords in Svalbard, Norway (78−80° N) during the polar night in January 2015, 2016 and 2017. Adult males and females of Calanus were observed at all locations and occurred throughout the entire water column. Morphological examination and molecular identification of Calanus males proved that all males encountered belong to Calanus glacialis, even in the fjords where overwintering copepodite stage CV of C. finmarchicus dominated at the time. Adult sex ratios in C. glacialis populations varied from 1 male per 4 females to 2 males per female. From 3 to 18% of females carried spermatophores attached to the genital segment. Lipid content in males was slightly higher than in females. Shipboard experiments showed that males had higher swimming activity and respiration rates than females. Our observations indicate that adult males of C. glacialis stay active and demonstrate active mating behavior in mid-winter, and that the mating phenology of C. glacialis is decoupled from that of C. finmarchicus in the study area in January. |
format |
Article in Journal/Newspaper |
author |
Daase, Malin Kosobokova, Ksenia Last, Kim S. Cohen, Jonathan H. Choquet, Marvin Hatlebakk, Maja Søreide, Janne E. |
author_facet |
Daase, Malin Kosobokova, Ksenia Last, Kim S. Cohen, Jonathan H. Choquet, Marvin Hatlebakk, Maja Søreide, Janne E. |
author_sort |
Daase, Malin |
title |
New insights into the biology of Calanus spp. (Copepoda) males in the Arctic |
title_short |
New insights into the biology of Calanus spp. (Copepoda) males in the Arctic |
title_full |
New insights into the biology of Calanus spp. (Copepoda) males in the Arctic |
title_fullStr |
New insights into the biology of Calanus spp. (Copepoda) males in the Arctic |
title_full_unstemmed |
New insights into the biology of Calanus spp. (Copepoda) males in the Arctic |
title_sort |
new insights into the biology of calanus spp. (copepoda) males in the arctic |
publishDate |
2018 |
url |
https://pure.uhi.ac.uk/en/publications/0c871157-651b-403b-bd91-ac282b435699 https://doi.org/10.3354/meps12788 https://pureadmin.uhi.ac.uk/ws/files/49032358/m607p053.pdf http://www.scopus.com/inward/record.url?scp=85058159222&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85058159222&partnerID=8YFLogxK |
geographic |
Arctic Norway Svalbard |
geographic_facet |
Arctic Norway Svalbard |
genre |
Arctic Arctic Calanus glacialis polar night Svalbard Zooplankton Copepods |
genre_facet |
Arctic Arctic Calanus glacialis polar night Svalbard Zooplankton Copepods |
op_source |
Daase , M , Kosobokova , K , Last , K S , Cohen , J H , Choquet , M , Hatlebakk , M & Søreide , J E 2018 , ' New insights into the biology of Calanus spp. (Copepoda) males in the Arctic ' , Marine Ecology Progress Series , vol. 607 , pp. 53-69 . https://doi.org/10.3354/meps12788 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps12788 |
container_title |
Marine Ecology Progress Series |
container_volume |
607 |
container_start_page |
53 |
op_container_end_page |
69 |
_version_ |
1789960987802075136 |