Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill
“Recruitment potential” in Antarctic krill in the Palmer Long-Term Ecological Research (LTER) study region west of the Antarctic Peninsula varied significantly over the 7-yr time series between January 1993 and January 1999. Timing of ovarian maturation, the percent of the population reproducing, an...
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Oxford University Press
2001
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fthighwire:oai:open-archive.highwire.org:icbiol:41/1/74 2023-05-15T14:03:07+02:00 Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill Quetin, Langdon B. Ross, Robin M. 2001-02-01 00:00:00.0 text/html http://icb.oxfordjournals.org/cgi/content/short/41/1/74 https://doi.org/10.1093/icb/41.1.74 en eng Oxford University Press http://icb.oxfordjournals.org/cgi/content/short/41/1/74 http://dx.doi.org/10.1093/icb/41.1.74 Copyright (C) 2001, The Society for Integrative and Comparative Biology Regular Article TEXT 2001 fthighwire https://doi.org/10.1093/icb/41.1.74 2007-06-24T22:08:17Z “Recruitment potential” in Antarctic krill in the Palmer Long-Term Ecological Research (LTER) study region west of the Antarctic Peninsula varied significantly over the 7-yr time series between January 1993 and January 1999. Timing of ovarian maturation, the percent of the population reproducing, and individual reproductive output (batch volume, embryo diameter) were measured. Indices have been developed to quantify the timing and intensity of reproduction in Antarctic krill. One finding important to estimates of population fecundity for this long-lived species is that the percent of the population reproducing can vary widely, from 10 to 98%. Each season was characterized as having delayed, average or advanced ovarian development. In this study we relate these indices to direct and indirect indicators of spring or annual food availability. The timing of the spring sea ice retreat and the extent of sea ice in the spring (September through November) appear to significantly affect the intensity and timing of reproduction in the population. Intensity of reproduction was highest under “average” conditions, and o o ¨ cyte development fastest with conditions of a late retreat and high spring sea ice extent. Text Antarc* Antarctic Antarctic Krill Antarctic Peninsula Sea ice HighWire Press (Stanford University) Antarctic Antarctic Peninsula The Antarctic American Zoologist 41 1 74 89 |
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Open Polar |
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HighWire Press (Stanford University) |
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fthighwire |
language |
English |
topic |
Regular Article |
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Regular Article Quetin, Langdon B. Ross, Robin M. Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill |
topic_facet |
Regular Article |
description |
“Recruitment potential” in Antarctic krill in the Palmer Long-Term Ecological Research (LTER) study region west of the Antarctic Peninsula varied significantly over the 7-yr time series between January 1993 and January 1999. Timing of ovarian maturation, the percent of the population reproducing, and individual reproductive output (batch volume, embryo diameter) were measured. Indices have been developed to quantify the timing and intensity of reproduction in Antarctic krill. One finding important to estimates of population fecundity for this long-lived species is that the percent of the population reproducing can vary widely, from 10 to 98%. Each season was characterized as having delayed, average or advanced ovarian development. In this study we relate these indices to direct and indirect indicators of spring or annual food availability. The timing of the spring sea ice retreat and the extent of sea ice in the spring (September through November) appear to significantly affect the intensity and timing of reproduction in the population. Intensity of reproduction was highest under “average” conditions, and o o ¨ cyte development fastest with conditions of a late retreat and high spring sea ice extent. |
format |
Text |
author |
Quetin, Langdon B. Ross, Robin M. |
author_facet |
Quetin, Langdon B. Ross, Robin M. |
author_sort |
Quetin, Langdon B. |
title |
Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill |
title_short |
Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill |
title_full |
Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill |
title_fullStr |
Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill |
title_full_unstemmed |
Environmental Variability and Its Impact on the Reproductive Cycle of Antarctic Krill |
title_sort |
environmental variability and its impact on the reproductive cycle of antarctic krill |
publisher |
Oxford University Press |
publishDate |
2001 |
url |
http://icb.oxfordjournals.org/cgi/content/short/41/1/74 https://doi.org/10.1093/icb/41.1.74 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Sea ice |
op_relation |
http://icb.oxfordjournals.org/cgi/content/short/41/1/74 http://dx.doi.org/10.1093/icb/41.1.74 |
op_rights |
Copyright (C) 2001, The Society for Integrative and Comparative Biology |
op_doi |
https://doi.org/10.1093/icb/41.1.74 |
container_title |
American Zoologist |
container_volume |
41 |
container_issue |
1 |
container_start_page |
74 |
op_container_end_page |
89 |
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1766273647203319808 |