Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway
Diet and food consumption of a stunted population of Arctic charr in Takvatn, northern Norway, was studied throughout the ice‐free season. Chironomid pupae dominated the diet in June, July and August, while zooplankton and three‐spined sticklebacks dominated in September and October. Estimates of ga...
Published in: | Journal of Fish Biology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1988
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1988.tb05515.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05515.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05515.x |
id |
crwiley:10.1111/j.1095-8649.1988.tb05515.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1095-8649.1988.tb05515.x 2024-10-13T14:04:01+00:00 Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway Amundsen, P. A. Klemetsen, A. 1988 http://dx.doi.org/10.1111/j.1095-8649.1988.tb05515.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05515.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05515.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 33, issue 5, page 697-709 ISSN 0022-1112 1095-8649 journal-article 1988 crwiley https://doi.org/10.1111/j.1095-8649.1988.tb05515.x 2024-09-17T04:46:09Z Diet and food consumption of a stunted population of Arctic charr in Takvatn, northern Norway, was studied throughout the ice‐free season. Chironomid pupae dominated the diet in June, July and August, while zooplankton and three‐spined sticklebacks dominated in September and October. Estimates of gastric evacuation rates were obtained from laboratory experiments with wild‐caught, acclimated charr, and these estimates were used for in situ estimation of food consumption from weights of stomach contents. The daily food consumption was greatest in July, after which it decreased markedly towards autumn. The estimated food intake rates were low, especially in September and October. The food supply appears to be restricted, which is probably the main reason why the charr in Takvaln exhibit stunted growth. Article in Journal/Newspaper Arctic charr Arctic Northern Norway Salvelinus alpinus Zooplankton Wiley Online Library Arctic Norway Journal of Fish Biology 33 5 697 709 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Diet and food consumption of a stunted population of Arctic charr in Takvatn, northern Norway, was studied throughout the ice‐free season. Chironomid pupae dominated the diet in June, July and August, while zooplankton and three‐spined sticklebacks dominated in September and October. Estimates of gastric evacuation rates were obtained from laboratory experiments with wild‐caught, acclimated charr, and these estimates were used for in situ estimation of food consumption from weights of stomach contents. The daily food consumption was greatest in July, after which it decreased markedly towards autumn. The estimated food intake rates were low, especially in September and October. The food supply appears to be restricted, which is probably the main reason why the charr in Takvaln exhibit stunted growth. |
format |
Article in Journal/Newspaper |
author |
Amundsen, P. A. Klemetsen, A. |
spellingShingle |
Amundsen, P. A. Klemetsen, A. Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway |
author_facet |
Amundsen, P. A. Klemetsen, A. |
author_sort |
Amundsen, P. A. |
title |
Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway |
title_short |
Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway |
title_full |
Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway |
title_fullStr |
Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway |
title_full_unstemmed |
Diet, gastric evacuation rates and food consumption in a stunted population of Arctic charr, Salvelinus alpinus L., in Takvatn, northern Norway |
title_sort |
diet, gastric evacuation rates and food consumption in a stunted population of arctic charr, salvelinus alpinus l., in takvatn, northern norway |
publisher |
Wiley |
publishDate |
1988 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1988.tb05515.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1988.tb05515.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1988.tb05515.x |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic Northern Norway Salvelinus alpinus Zooplankton |
genre_facet |
Arctic charr Arctic Northern Norway Salvelinus alpinus Zooplankton |
op_source |
Journal of Fish Biology volume 33, issue 5, page 697-709 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1988.tb05515.x |
container_title |
Journal of Fish Biology |
container_volume |
33 |
container_issue |
5 |
container_start_page |
697 |
op_container_end_page |
709 |
_version_ |
1812809191280082944 |