Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific
Thesis (M.S.) University of Alaska Fairbanks, 2004 Copepods dominate oceanic mesozooplankton in terms of abundance and biomass thus contributing a significant source of secondary production. I determined development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri at...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/4984 2023-05-15T18:28:16+02:00 Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific Slater, Laura Michelle 2004-08 http://hdl.handle.net/11122/4984 en_US eng http://hdl.handle.net/11122/4984 Graduate Program in Marine Science and Limnology Thesis ms 2004 ftunivalaska 2023-02-23T21:36:20Z Thesis (M.S.) University of Alaska Fairbanks, 2004 Copepods dominate oceanic mesozooplankton in terms of abundance and biomass thus contributing a significant source of secondary production. I determined development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri at temperatures representative of the northern Gulf of Alaska in spring. Median development times from eggs to adults were 42 and 59 days for C. abdominalis at 5 and 7°C, respectively, and 117 days from eggs to copepodite stage five for N. flemingeri at 5°C. Average copepodite growth rates were 0.08 and 0.17 d⁻¹ for C. abdominalis at 5 and 7°C, respectively, and 0.15 d⁻¹ for N. flemingeri at 5°C. In situ egg production of C. abdominalis was 37 ± 22 eggs female⁻¹ d⁻¹ (mean ± S.D.), corresponding to a growth rate of 0.14 d⁻¹. Lifetime fecundity of N. flemingeri determined at 5°C was 535 ± 258 eggs female⁻¹ (mean ± S.D.). Comparing these results to in situ populations reveals that C. abdominalis may be food limited during the summer and fall, while N. flemingeri is likely not food limited in late spring. Overall, this information helps clarify the life history patterns of these two species and allows production to be estimated and models of secondary production created for conditions within the Gulf of Alaska. Ch. 1. Development, growth, and egg production of Centropages abdominalis in the eastern subarctic Pacific -- ch. 2. Development, growth, and egg production of Neocalanus flemingeri -- Conclusion. Thesis Subarctic Alaska Copepods University of Alaska: ScholarWorks@UA Fairbanks Gulf of Alaska Pacific |
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University of Alaska: ScholarWorks@UA |
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English |
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Thesis (M.S.) University of Alaska Fairbanks, 2004 Copepods dominate oceanic mesozooplankton in terms of abundance and biomass thus contributing a significant source of secondary production. I determined development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri at temperatures representative of the northern Gulf of Alaska in spring. Median development times from eggs to adults were 42 and 59 days for C. abdominalis at 5 and 7°C, respectively, and 117 days from eggs to copepodite stage five for N. flemingeri at 5°C. Average copepodite growth rates were 0.08 and 0.17 d⁻¹ for C. abdominalis at 5 and 7°C, respectively, and 0.15 d⁻¹ for N. flemingeri at 5°C. In situ egg production of C. abdominalis was 37 ± 22 eggs female⁻¹ d⁻¹ (mean ± S.D.), corresponding to a growth rate of 0.14 d⁻¹. Lifetime fecundity of N. flemingeri determined at 5°C was 535 ± 258 eggs female⁻¹ (mean ± S.D.). Comparing these results to in situ populations reveals that C. abdominalis may be food limited during the summer and fall, while N. flemingeri is likely not food limited in late spring. Overall, this information helps clarify the life history patterns of these two species and allows production to be estimated and models of secondary production created for conditions within the Gulf of Alaska. Ch. 1. Development, growth, and egg production of Centropages abdominalis in the eastern subarctic Pacific -- ch. 2. Development, growth, and egg production of Neocalanus flemingeri -- Conclusion. |
format |
Thesis |
author |
Slater, Laura Michelle |
spellingShingle |
Slater, Laura Michelle Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific |
author_facet |
Slater, Laura Michelle |
author_sort |
Slater, Laura Michelle |
title |
Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific |
title_short |
Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific |
title_full |
Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific |
title_fullStr |
Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific |
title_full_unstemmed |
Development, growth, and egg production of Centropages abdominalis and Neocalanus flemingeri from the eastern subarctic Pacific |
title_sort |
development, growth, and egg production of centropages abdominalis and neocalanus flemingeri from the eastern subarctic pacific |
publishDate |
2004 |
url |
http://hdl.handle.net/11122/4984 |
geographic |
Fairbanks Gulf of Alaska Pacific |
geographic_facet |
Fairbanks Gulf of Alaska Pacific |
genre |
Subarctic Alaska Copepods |
genre_facet |
Subarctic Alaska Copepods |
op_relation |
http://hdl.handle.net/11122/4984 Graduate Program in Marine Science and Limnology |
_version_ |
1766210654331469824 |