The biochemical composition of krill, Euphausia superba Dana, from South Georgia
Krill, Euphausia superba Dana, sampled from waters around South Georgia in 1978 contained 10–11% protein, 2–6% lipid, 0.3–0.6% carbohydrate, 2% chitin, and 3–4% mineral ash (all mean values, % fresh weight). Lipid content varied greatly with sexual maturity: males contained 2–4% lipid, immature anim...
Published in: | Journal of Experimental Marine Biology and Ecology |
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ftnerc:oai:nora.nerc.ac.uk:524891 2023-05-15T13:41:44+02:00 The biochemical composition of krill, Euphausia superba Dana, from South Georgia Clarke, Andrew 1980 http://nora.nerc.ac.uk/id/eprint/524891/ https://doi.org/10.1016/0022-0981(80)90049-0 unknown Elsevier Clarke, Andrew orcid:0000-0002-7582-3074 . 1980 The biochemical composition of krill, Euphausia superba Dana, from South Georgia. Journal of Experimental Marine Biology and Ecology, 43 (3). 221-236. https://doi.org/10.1016/0022-0981(80)90049-0 <https://doi.org/10.1016/0022-0981(80)90049-0> Biology and Microbiology Publication - Article PeerReviewed 1980 ftnerc https://doi.org/10.1016/0022-0981(80)90049-0 2023-02-04T19:49:08Z Krill, Euphausia superba Dana, sampled from waters around South Georgia in 1978 contained 10–11% protein, 2–6% lipid, 0.3–0.6% carbohydrate, 2% chitin, and 3–4% mineral ash (all mean values, % fresh weight). Lipid content varied greatly with sexual maturity: males contained 2–4% lipid, immature animals 4% (both increasing to 5–6% later in the season) and mature females 5–6% (although some contained as much as 9%). Gravid females lost ≈60% of their lipid at spawning, and a biochemical estimate of fecundity gave values in the range 7000 to 15 000. The major lipid classes were phospholipid, triacylglyceropl, and free sterol, and there was 1–2% wax ester. The mean pigment content was 21.5 μg/g fresh weight. Triacylglycerol fatty acids were low in polyenoic acids and contained up to 4% phytanic acid; compositions were variable and showed the probable influence of dietary input. Phospholipids were rich in polyenoic acids, especially 20 : 5ω3 and 22 : 6ω3, and usually had 18 : 1ω7 > 18 : 1ω9. Ovarian triacylglycerol contained almost no polyenoic acids, but ovarian phospholipid was fairly unsaturated. These results are discussed in relation to the Antarctic environment, and compared with the results of previous work on caridean decapods. Article in Journal/Newspaper Antarc* Antarctic Euphausia superba Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Journal of Experimental Marine Biology and Ecology 43 3 221 236 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
topic |
Biology and Microbiology |
spellingShingle |
Biology and Microbiology Clarke, Andrew The biochemical composition of krill, Euphausia superba Dana, from South Georgia |
topic_facet |
Biology and Microbiology |
description |
Krill, Euphausia superba Dana, sampled from waters around South Georgia in 1978 contained 10–11% protein, 2–6% lipid, 0.3–0.6% carbohydrate, 2% chitin, and 3–4% mineral ash (all mean values, % fresh weight). Lipid content varied greatly with sexual maturity: males contained 2–4% lipid, immature animals 4% (both increasing to 5–6% later in the season) and mature females 5–6% (although some contained as much as 9%). Gravid females lost ≈60% of their lipid at spawning, and a biochemical estimate of fecundity gave values in the range 7000 to 15 000. The major lipid classes were phospholipid, triacylglyceropl, and free sterol, and there was 1–2% wax ester. The mean pigment content was 21.5 μg/g fresh weight. Triacylglycerol fatty acids were low in polyenoic acids and contained up to 4% phytanic acid; compositions were variable and showed the probable influence of dietary input. Phospholipids were rich in polyenoic acids, especially 20 : 5ω3 and 22 : 6ω3, and usually had 18 : 1ω7 > 18 : 1ω9. Ovarian triacylglycerol contained almost no polyenoic acids, but ovarian phospholipid was fairly unsaturated. These results are discussed in relation to the Antarctic environment, and compared with the results of previous work on caridean decapods. |
format |
Article in Journal/Newspaper |
author |
Clarke, Andrew |
author_facet |
Clarke, Andrew |
author_sort |
Clarke, Andrew |
title |
The biochemical composition of krill, Euphausia superba Dana, from South Georgia |
title_short |
The biochemical composition of krill, Euphausia superba Dana, from South Georgia |
title_full |
The biochemical composition of krill, Euphausia superba Dana, from South Georgia |
title_fullStr |
The biochemical composition of krill, Euphausia superba Dana, from South Georgia |
title_full_unstemmed |
The biochemical composition of krill, Euphausia superba Dana, from South Georgia |
title_sort |
biochemical composition of krill, euphausia superba dana, from south georgia |
publisher |
Elsevier |
publishDate |
1980 |
url |
http://nora.nerc.ac.uk/id/eprint/524891/ https://doi.org/10.1016/0022-0981(80)90049-0 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Euphausia superba |
genre_facet |
Antarc* Antarctic Euphausia superba |
op_relation |
Clarke, Andrew orcid:0000-0002-7582-3074 . 1980 The biochemical composition of krill, Euphausia superba Dana, from South Georgia. Journal of Experimental Marine Biology and Ecology, 43 (3). 221-236. https://doi.org/10.1016/0022-0981(80)90049-0 <https://doi.org/10.1016/0022-0981(80)90049-0> |
op_doi |
https://doi.org/10.1016/0022-0981(80)90049-0 |
container_title |
Journal of Experimental Marine Biology and Ecology |
container_volume |
43 |
container_issue |
3 |
container_start_page |
221 |
op_container_end_page |
236 |
_version_ |
1766155694572044288 |