Journal
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
Volume 57, Issue 1-2, Pages 49-56Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.dsr2.2009.08.004
Keywords
Pseudocalanus; Egg production; Arctic Ocean; Chukchi Sea
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Funding
- NOAA's Office of Ocean Exploration
- NOAA's Arctic Research Office
- Cooperative Institute for Arctic Research (CIFAR), University of Alaska [NA17RJ1224]
- Russian Foundation for Basic Research [06-05-65187]
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The distribution and egg production of Pseudocalanus species was studied in the Chukchi Sea during August 2004. Three species were identified throughout the study area, Pseudocalanus minutus, Pseudocalanus acuspes and Pseudocalanus newmani. The more subpolar/temperate P. newmani-dominated stations where water was warmer and likely influenced by Alaska coastal waters, and it penetrated northward into the south-eastern corner of Herald Valley. The Arctic P. acuspes dominated the colder waters. The number of eggs produced by individuals and populations differed among species, primarily because of differences in body size, but mass-specific egg production was similar among species, and was on the order of 15% per day. Future increases in the prevalence of P. newmani within the Chukchi Sea might be anticipated, and would result in a decreased average size of the copepod community, with potential implication for higher trophic levels. (C) 2009 Elsevier Ltd. All rights reserved.
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