Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run
The composition of the muscle, liver, and gonads of adult river lampreys (Lampetra fluviatilis L.) was studied in northern Finland from the beginning of the spawning run in August–September until the end of the spawning season in late May or early June of the following spring. During the spawning ru...
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1984
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crcansciencepubl:10.1139/z84-330 2023-12-17T10:47:27+01:00 Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run Heikkala, R. M. Laukkanen, A. T. Mikkonen, A. V. 1984 http://dx.doi.org/10.1139/z84-330 http://www.nrcresearchpress.com/doi/pdf/10.1139/z84-330 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 62, issue 11, page 2272-2279 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1984 crcansciencepubl https://doi.org/10.1139/z84-330 2023-11-19T13:38:47Z The composition of the muscle, liver, and gonads of adult river lampreys (Lampetra fluviatilis L.) was studied in northern Finland from the beginning of the spawning run in August–September until the end of the spawning season in late May or early June of the following spring. During the spawning run period, which may last for9–10 months, lampreys spend 6 months in water with a temperature around 0 °C. These harsh physical circumstances only have remarkable delaying or economizing effects on the results when compared with findings on lampreys with a shorter spawning run. The locomotor activity of the lamprey was very minor during the winter, and so it did not need greater than 10–15% wet weight (w.w.) muscular lipid reserves as an energy source for swimming. The gonads were well developed; i.e., the gonadosomic index was 5% in males and 11% in females at the beginning of the spawning run (9 and 26%, respectively, during the spawning time) and, as a result, the lipid concentration of liver, where vitellogenesis takes place, was not greater than 15% w.w. in males and 5% w.w. in females. Our results suggested that after wintering in the northernmost parts of the species' range, river lampreys were prepared for the rapid start of spawning in the spring, as soon as the water temperature was appropriate. Article in Journal/Newspaper Northern Finland Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 62 11 2272 2279 |
institution |
Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
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Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Heikkala, R. M. Laukkanen, A. T. Mikkonen, A. V. Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
The composition of the muscle, liver, and gonads of adult river lampreys (Lampetra fluviatilis L.) was studied in northern Finland from the beginning of the spawning run in August–September until the end of the spawning season in late May or early June of the following spring. During the spawning run period, which may last for9–10 months, lampreys spend 6 months in water with a temperature around 0 °C. These harsh physical circumstances only have remarkable delaying or economizing effects on the results when compared with findings on lampreys with a shorter spawning run. The locomotor activity of the lamprey was very minor during the winter, and so it did not need greater than 10–15% wet weight (w.w.) muscular lipid reserves as an energy source for swimming. The gonads were well developed; i.e., the gonadosomic index was 5% in males and 11% in females at the beginning of the spawning run (9 and 26%, respectively, during the spawning time) and, as a result, the lipid concentration of liver, where vitellogenesis takes place, was not greater than 15% w.w. in males and 5% w.w. in females. Our results suggested that after wintering in the northernmost parts of the species' range, river lampreys were prepared for the rapid start of spawning in the spring, as soon as the water temperature was appropriate. |
format |
Article in Journal/Newspaper |
author |
Heikkala, R. M. Laukkanen, A. T. Mikkonen, A. V. |
author_facet |
Heikkala, R. M. Laukkanen, A. T. Mikkonen, A. V. |
author_sort |
Heikkala, R. M. |
title |
Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run |
title_short |
Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run |
title_full |
Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run |
title_fullStr |
Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run |
title_full_unstemmed |
Proximate composition of the river lamprey, Lampetra fluviatilis , during the spawning run |
title_sort |
proximate composition of the river lamprey, lampetra fluviatilis , during the spawning run |
publisher |
Canadian Science Publishing |
publishDate |
1984 |
url |
http://dx.doi.org/10.1139/z84-330 http://www.nrcresearchpress.com/doi/pdf/10.1139/z84-330 |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
Canadian Journal of Zoology volume 62, issue 11, page 2272-2279 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z84-330 |
container_title |
Canadian Journal of Zoology |
container_volume |
62 |
container_issue |
11 |
container_start_page |
2272 |
op_container_end_page |
2279 |
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1785571314817302528 |