Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland
AbstractThis study describes the annual reproductive cycles of the three dominant Calanus species, C. finmarchicus, C. glacialis and C. hyperboreus, in Disko Bay (West Greenland) in relation to the seasonal phytoplankton development. Relative abundance of females, copepodite stage 5 (CV) and males,...
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ftawi:oai:epic.awi.de:4681 2024-09-15T18:00:42+00:00 Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland Niehoff, Barbara Madsen, S. D. Hansen, Birte Nielsen, T. G. 2002 https://epic.awi.de/id/eprint/4681/ https://doi.org/10.1007/s00227-001-0731-3 https://hdl.handle.net/10013/epic.15249 unknown Niehoff, B. , Madsen, S. D. , Hansen, B. and Nielsen, T. G. (2002) Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland , Marine Biology, 140 , pp. 567-576 . doi:10.1007/s00227-001-0731-3 <https://doi.org/10.1007/s00227-001-0731-3> , hdl:10013/epic.15249 EPIC3Marine Biology, 140, pp. 567-576 Article isiRev 2002 ftawi https://doi.org/10.1007/s00227-001-0731-3 2024-06-24T03:54:51Z AbstractThis study describes the annual reproductive cycles of the three dominant Calanus species, C. finmarchicus, C. glacialis and C. hyperboreus, in Disko Bay (West Greenland) in relation to the seasonal phytoplankton development. Relative abundance of females, copepodite stage 5 (CV) and males, and the developmental stage of the female gonad were examined from plankton samples collected at weekly to monthly intervals from May 1996 to June 1997 with a WP2 net or a pump. During spring and summer, egg production rates were determined. Females of all three species were present year round. Maximum relative abundance was reached by C. hyperboreus females at the beginning of February, by C. glacialis in mid February, and by C. finmarchicus in April. All three species reproduced successfully in Disko Bay. Their reproductive cycles were considerably different with respect to the timing of final gonad maturation and spawning, and hence in their relation to the seasonal phytoplankton development. In all three species, early gonad development took place during winter before living food became plentiful suggesting that these processes were largely food independent. Final gonad maturation and spawning in C. finmarchicus was related to the phytoplankton concentration reflecting that final gonad maturation processes are food dependant in this species. C. glacialis females matured and spawned prior to the spring bloom. Our results indicate that first internal lipid stores, and later ice algae grazing, supplied final gonad maturation and egg production. Maximum egg production rates of C. glacialis were found in spring and summer when the chlorophyll a concentration was high. Mature female C. hyperboreus were found from February until mid April when the chlorophyll a concentration was still low. In this species, reproductive activity was decoupled from the phytoplankton development, and final maturation processes and spawning were solely fuelled by internal energy stores.Keywords: Calanus finmarchicus, Calanus glacialis, ... Article in Journal/Newspaper Calanus finmarchicus Calanus glacialis Disko Bay Greenland ice algae Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Marine Biology 140 3 567 576 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
AbstractThis study describes the annual reproductive cycles of the three dominant Calanus species, C. finmarchicus, C. glacialis and C. hyperboreus, in Disko Bay (West Greenland) in relation to the seasonal phytoplankton development. Relative abundance of females, copepodite stage 5 (CV) and males, and the developmental stage of the female gonad were examined from plankton samples collected at weekly to monthly intervals from May 1996 to June 1997 with a WP2 net or a pump. During spring and summer, egg production rates were determined. Females of all three species were present year round. Maximum relative abundance was reached by C. hyperboreus females at the beginning of February, by C. glacialis in mid February, and by C. finmarchicus in April. All three species reproduced successfully in Disko Bay. Their reproductive cycles were considerably different with respect to the timing of final gonad maturation and spawning, and hence in their relation to the seasonal phytoplankton development. In all three species, early gonad development took place during winter before living food became plentiful suggesting that these processes were largely food independent. Final gonad maturation and spawning in C. finmarchicus was related to the phytoplankton concentration reflecting that final gonad maturation processes are food dependant in this species. C. glacialis females matured and spawned prior to the spring bloom. Our results indicate that first internal lipid stores, and later ice algae grazing, supplied final gonad maturation and egg production. Maximum egg production rates of C. glacialis were found in spring and summer when the chlorophyll a concentration was high. Mature female C. hyperboreus were found from February until mid April when the chlorophyll a concentration was still low. In this species, reproductive activity was decoupled from the phytoplankton development, and final maturation processes and spawning were solely fuelled by internal energy stores.Keywords: Calanus finmarchicus, Calanus glacialis, ... |
format |
Article in Journal/Newspaper |
author |
Niehoff, Barbara Madsen, S. D. Hansen, Birte Nielsen, T. G. |
spellingShingle |
Niehoff, Barbara Madsen, S. D. Hansen, Birte Nielsen, T. G. Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland |
author_facet |
Niehoff, Barbara Madsen, S. D. Hansen, Birte Nielsen, T. G. |
author_sort |
Niehoff, Barbara |
title |
Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland |
title_short |
Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland |
title_full |
Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland |
title_fullStr |
Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland |
title_full_unstemmed |
Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland |
title_sort |
reproductive cycles of three dominant calanus species in disko bay, west greenland |
publishDate |
2002 |
url |
https://epic.awi.de/id/eprint/4681/ https://doi.org/10.1007/s00227-001-0731-3 https://hdl.handle.net/10013/epic.15249 |
genre |
Calanus finmarchicus Calanus glacialis Disko Bay Greenland ice algae |
genre_facet |
Calanus finmarchicus Calanus glacialis Disko Bay Greenland ice algae |
op_source |
EPIC3Marine Biology, 140, pp. 567-576 |
op_relation |
Niehoff, B. , Madsen, S. D. , Hansen, B. and Nielsen, T. G. (2002) Reproductive cycles of three dominant Calanus species in Disko Bay, West Greenland , Marine Biology, 140 , pp. 567-576 . doi:10.1007/s00227-001-0731-3 <https://doi.org/10.1007/s00227-001-0731-3> , hdl:10013/epic.15249 |
op_doi |
https://doi.org/10.1007/s00227-001-0731-3 |
container_title |
Marine Biology |
container_volume |
140 |
container_issue |
3 |
container_start_page |
567 |
op_container_end_page |
576 |
_version_ |
1810437877715173376 |