Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.)
Morphological differences, haematocrit value and chloride cells were examined in downstream migrating Arctic charr, Salvelinus alpinus (L.) from the Hals River, North Norway, and resident charr from Lake Storvann. Fish were classified as visual parr, silvery parr or smolt based on the degree of silv...
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crwiley:10.1111/j.1095-8649.1991.tb04406.x 2024-06-02T08:00:03+00:00 Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.) Damsgård, B. 1991 http://dx.doi.org/10.1111/j.1095-8649.1991.tb04406.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1991.tb04406.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1991.tb04406.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 39, issue 5, page 765-774 ISSN 0022-1112 1095-8649 journal-article 1991 crwiley https://doi.org/10.1111/j.1095-8649.1991.tb04406.x 2024-05-03T11:24:18Z Morphological differences, haematocrit value and chloride cells were examined in downstream migrating Arctic charr, Salvelinus alpinus (L.) from the Hals River, North Norway, and resident charr from Lake Storvann. Fish were classified as visual parr, silvery parr or smolt based on the degree of silvering and the Occurrence of lateral parr marks. On average, 47% of downstream migrating Arctic charr were classified as visual molts, but only 14% of the resident charr. Charr longer than 20 cm fork length were mainly classified as visual molts. Morphometrical analyses of body size and shape revealed that most of the variations could be explained in terms of variations in fork length. Length adjusted ratios of post‐anal distances were significantly higher in migrating charr than in resident charr. The number of developed chloride cells, the cell nucleus diameter in the basin of secondary gill lamellae and blood haematocrit values were significantly higher among downstream migrating charr than in resident charr. However, morphological differences between anadromous and resident Arctic charr were not necessarily synchronized with the development of chloride cells. Article in Journal/Newspaper Arctic charr Arctic North Norway Salvelinus alpinus Wiley Online Library Arctic Norway Journal of Fish Biology 39 5 765 774 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Morphological differences, haematocrit value and chloride cells were examined in downstream migrating Arctic charr, Salvelinus alpinus (L.) from the Hals River, North Norway, and resident charr from Lake Storvann. Fish were classified as visual parr, silvery parr or smolt based on the degree of silvering and the Occurrence of lateral parr marks. On average, 47% of downstream migrating Arctic charr were classified as visual molts, but only 14% of the resident charr. Charr longer than 20 cm fork length were mainly classified as visual molts. Morphometrical analyses of body size and shape revealed that most of the variations could be explained in terms of variations in fork length. Length adjusted ratios of post‐anal distances were significantly higher in migrating charr than in resident charr. The number of developed chloride cells, the cell nucleus diameter in the basin of secondary gill lamellae and blood haematocrit values were significantly higher among downstream migrating charr than in resident charr. However, morphological differences between anadromous and resident Arctic charr were not necessarily synchronized with the development of chloride cells. |
format |
Article in Journal/Newspaper |
author |
Damsgård, B. |
spellingShingle |
Damsgård, B. Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.) |
author_facet |
Damsgård, B. |
author_sort |
Damsgård, B. |
title |
Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.) |
title_short |
Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.) |
title_full |
Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.) |
title_fullStr |
Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.) |
title_full_unstemmed |
Smolting characters in anadromous and resident Arctic charr, Salvelinus alpinus (L.) |
title_sort |
smolting characters in anadromous and resident arctic charr, salvelinus alpinus (l.) |
publisher |
Wiley |
publishDate |
1991 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1991.tb04406.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1991.tb04406.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1991.tb04406.x |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic charr Arctic North Norway Salvelinus alpinus |
genre_facet |
Arctic charr Arctic North Norway Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 39, issue 5, page 765-774 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1991.tb04406.x |
container_title |
Journal of Fish Biology |
container_volume |
39 |
container_issue |
5 |
container_start_page |
765 |
op_container_end_page |
774 |
_version_ |
1800744064013828096 |