Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska
Neocalanus cristatus feeding on phytoplankton and microzooplankton was measured in the coastal Gulf of Alaska during spring and early summer of 2001 and 2003. Neocalanus cristatus CV fed primarily on particles >20 μm. Particles in the 5- to 20-μm size range were ingested in some experiments under...
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ftunivsthongkong:oai:repository.ust.hk:1783.1-10866 2023-05-15T18:48:48+02:00 Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska Liu, Hongbin Dagg, Michael J. Strom, Suzanne L. 2005 http://repository.ust.hk/ir/Record/1783.1-10866 https://doi.org/10.1093/plankt/fbi039 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0142-7873&rft.volume=27&rft.issue=7&rft.date=2005&rft.spage=647&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Grazing%20by%20the%20calanoid%20copepod%20Neocalanus%20cristatus%20on%20the%20microbial%20food%20web%20in%20the%20coastal%20Gulf%20of%20Alaska&rft.title=Journal%20of%20Plankton%20Research http://www.scopus.com/record/display.url?eid=2-s2.0-24344503061&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000231691300003 English eng http://repository.ust.hk/ir/Record/1783.1-10866 Journal of Plankton Research, v. 27, (7), July 2005, p. 647-662 0142-7873 https://doi.org/10.1093/plankt/fbi039 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0142-7873&rft.volume=27&rft.issue=7&rft.date=2005&rft.spage=647&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Grazing%20by%20the%20calanoid%20copepod%20Neocalanus%20cristatus%20on%20the%20microbial%20food%20web%20in%20the%20coastal%20Gulf%20of%20Alaska&rft.title=Journal%20of%20Plankton%20Research http://www.scopus.com/record/display.url?eid=2-s2.0-24344503061&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000231691300003 Article 2005 ftunivsthongkong https://doi.org/10.1093/plankt/fbi039 2019-09-03T18:27:33Z Neocalanus cristatus feeding on phytoplankton and microzooplankton was measured in the coastal Gulf of Alaska during spring and early summer of 2001 and 2003. Neocalanus cristatus CV fed primarily on particles >20 μm. Particles in the 5- to 20-μm size range were ingested in some experiments under nonbloom conditions but not under bloom conditions. Particles <5 μm were not ingested but increased during incubations because N. cristatus consumed their microzooplanktonic predators. Neocalanus cristatus are sufficiently abundant in nature to induce such a cascade effect in situ. Microzooplankton provided >70% of the carbon ingested by M. cristatus under nonbloom conditions but only ∼30% under bloom conditions. Neocalanus cristatus ingested about two times more carbon under bloom conditions (average 21.4 μg C copepod-1 day-1) than under nonbloom conditions (average 10.0 μg C copepod-1 day-1), but these rates were inadequate to meet nutritional demands for growth and metabolism, estimated to be between 40 and 140 μg C copepod-1 day-1. We believe our ingestion rates are underestimates of in situ rates because (i) we are underestimating consumption rates of large particles, (ii) we may not be including some very large particles that should be considered as diet items and (iii) we are not properly accounting for the ingestion of aggregates. The feeding behavior of N. cristatus, one of the most abundant copepods in the North Pacific Ocean, remains incompletely understood. © The Author 2005. Published by Oxford University Press. All rights reserved. Article in Journal/Newspaper Alaska Copepods The Hong Kong University of Science and Technology: HKUST Institutional Repository Gulf of Alaska Pacific Journal of Plankton Research 27 7 647 662 |
institution |
Open Polar |
collection |
The Hong Kong University of Science and Technology: HKUST Institutional Repository |
op_collection_id |
ftunivsthongkong |
language |
English |
description |
Neocalanus cristatus feeding on phytoplankton and microzooplankton was measured in the coastal Gulf of Alaska during spring and early summer of 2001 and 2003. Neocalanus cristatus CV fed primarily on particles >20 μm. Particles in the 5- to 20-μm size range were ingested in some experiments under nonbloom conditions but not under bloom conditions. Particles <5 μm were not ingested but increased during incubations because N. cristatus consumed their microzooplanktonic predators. Neocalanus cristatus are sufficiently abundant in nature to induce such a cascade effect in situ. Microzooplankton provided >70% of the carbon ingested by M. cristatus under nonbloom conditions but only ∼30% under bloom conditions. Neocalanus cristatus ingested about two times more carbon under bloom conditions (average 21.4 μg C copepod-1 day-1) than under nonbloom conditions (average 10.0 μg C copepod-1 day-1), but these rates were inadequate to meet nutritional demands for growth and metabolism, estimated to be between 40 and 140 μg C copepod-1 day-1. We believe our ingestion rates are underestimates of in situ rates because (i) we are underestimating consumption rates of large particles, (ii) we may not be including some very large particles that should be considered as diet items and (iii) we are not properly accounting for the ingestion of aggregates. The feeding behavior of N. cristatus, one of the most abundant copepods in the North Pacific Ocean, remains incompletely understood. © The Author 2005. Published by Oxford University Press. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Liu, Hongbin Dagg, Michael J. Strom, Suzanne L. |
spellingShingle |
Liu, Hongbin Dagg, Michael J. Strom, Suzanne L. Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska |
author_facet |
Liu, Hongbin Dagg, Michael J. Strom, Suzanne L. |
author_sort |
Liu, Hongbin |
title |
Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska |
title_short |
Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska |
title_full |
Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska |
title_fullStr |
Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska |
title_full_unstemmed |
Grazing by the calanoid copepod Neocalanus cristatus on the microbial food web in the coastal Gulf of Alaska |
title_sort |
grazing by the calanoid copepod neocalanus cristatus on the microbial food web in the coastal gulf of alaska |
publishDate |
2005 |
url |
http://repository.ust.hk/ir/Record/1783.1-10866 https://doi.org/10.1093/plankt/fbi039 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0142-7873&rft.volume=27&rft.issue=7&rft.date=2005&rft.spage=647&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Grazing%20by%20the%20calanoid%20copepod%20Neocalanus%20cristatus%20on%20the%20microbial%20food%20web%20in%20the%20coastal%20Gulf%20of%20Alaska&rft.title=Journal%20of%20Plankton%20Research http://www.scopus.com/record/display.url?eid=2-s2.0-24344503061&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000231691300003 |
geographic |
Gulf of Alaska Pacific |
geographic_facet |
Gulf of Alaska Pacific |
genre |
Alaska Copepods |
genre_facet |
Alaska Copepods |
op_relation |
http://repository.ust.hk/ir/Record/1783.1-10866 Journal of Plankton Research, v. 27, (7), July 2005, p. 647-662 0142-7873 https://doi.org/10.1093/plankt/fbi039 http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0142-7873&rft.volume=27&rft.issue=7&rft.date=2005&rft.spage=647&rft.aulast=Liu&rft.aufirst=Hongbin%7C&rft.atitle=Grazing%20by%20the%20calanoid%20copepod%20Neocalanus%20cristatus%20on%20the%20microbial%20food%20web%20in%20the%20coastal%20Gulf%20of%20Alaska&rft.title=Journal%20of%20Plankton%20Research http://www.scopus.com/record/display.url?eid=2-s2.0-24344503061&origin=inward http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000231691300003 |
op_doi |
https://doi.org/10.1093/plankt/fbi039 |
container_title |
Journal of Plankton Research |
container_volume |
27 |
container_issue |
7 |
container_start_page |
647 |
op_container_end_page |
662 |
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1766242090893705216 |