Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska
Dolly Varden (Salvelinus malma) smolts were enumerated and sampled in 1967, 1968, and 1969 at Hood Bay Creek, a nonlake system on Admiralty Island, and in 1962, 1963, and 1964 at Eva Lake, on Baranof Island.Dolly Varden smolts left Hood Bay Creek from early May to late June and from early September...
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Canadian Science Publishing
1970
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crcansciencepubl:10.1139/f70-116 2023-12-17T10:48:48+01:00 Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska Armstrong, Robert H. 1970 http://dx.doi.org/10.1139/f70-116 http://www.nrcresearchpress.com/doi/pdf/10.1139/f70-116 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 27, issue 6, page 991-1004 ISSN 0015-296X General Medicine journal-article 1970 crcansciencepubl https://doi.org/10.1139/f70-116 2023-11-19T13:39:00Z Dolly Varden (Salvelinus malma) smolts were enumerated and sampled in 1967, 1968, and 1969 at Hood Bay Creek, a nonlake system on Admiralty Island, and in 1962, 1963, and 1964 at Eva Lake, on Baranof Island.Dolly Varden smolts left Hood Bay Creek from early May to late June and from early September to mid-November. At Eva Lake, a smolt migration occurred in May and June but not during the fall. Most of the smolts at Hood Bay Creek belonged to age-groups II, III, and IV and at Eva Lake to age-groups III and IV. Smolts from the two systems were similar in size, varying from 100 to 180 mm in fork length, with annual mean lengths ranging from 134 to 136 mm.Insects and fry of chum (Oncorhynchus keta) and pink salmon (O. gorbuscha) were the principal food items of Dolly Varden and coho salmon (O. kisutch) smolts sampled at the Hood Bay Creek weir in May and June. Dolly Varden smolts leaving Hood Bay Creek in the fall fed primarily on salmon eggs, whereas insects were the principal food items of smolts sampled at the Eva Lake weir.Suggestions for management of Dolly Varden are given. The number of eggs, fry, or smolts necessary to maintain a given run of Dolly Varden indicates a high return from smolts and a low return from eggs or fry. Transplanting smolts from one system to another to establish or enhance a population in a depleted system is suggested. Article in Journal/Newspaper Pink salmon Alaska Canadian Science Publishing (via Crossref) Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Weir ENVELOPE(177.167,177.167,-84.983,-84.983) Varden ENVELOPE(7.656,7.656,62.534,62.534) Admiralty Island ENVELOPE(-101.115,-101.115,69.488,69.488) Hood Bay ENVELOPE(-103.901,-103.901,57.217,57.217) Bay Creek ENVELOPE(-123.120,-123.120,61.100,61.100) Journal of the Fisheries Research Board of Canada 27 6 991 1004 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Armstrong, Robert H. Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska |
topic_facet |
General Medicine |
description |
Dolly Varden (Salvelinus malma) smolts were enumerated and sampled in 1967, 1968, and 1969 at Hood Bay Creek, a nonlake system on Admiralty Island, and in 1962, 1963, and 1964 at Eva Lake, on Baranof Island.Dolly Varden smolts left Hood Bay Creek from early May to late June and from early September to mid-November. At Eva Lake, a smolt migration occurred in May and June but not during the fall. Most of the smolts at Hood Bay Creek belonged to age-groups II, III, and IV and at Eva Lake to age-groups III and IV. Smolts from the two systems were similar in size, varying from 100 to 180 mm in fork length, with annual mean lengths ranging from 134 to 136 mm.Insects and fry of chum (Oncorhynchus keta) and pink salmon (O. gorbuscha) were the principal food items of Dolly Varden and coho salmon (O. kisutch) smolts sampled at the Hood Bay Creek weir in May and June. Dolly Varden smolts leaving Hood Bay Creek in the fall fed primarily on salmon eggs, whereas insects were the principal food items of smolts sampled at the Eva Lake weir.Suggestions for management of Dolly Varden are given. The number of eggs, fry, or smolts necessary to maintain a given run of Dolly Varden indicates a high return from smolts and a low return from eggs or fry. Transplanting smolts from one system to another to establish or enhance a population in a depleted system is suggested. |
format |
Article in Journal/Newspaper |
author |
Armstrong, Robert H. |
author_facet |
Armstrong, Robert H. |
author_sort |
Armstrong, Robert H. |
title |
Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska |
title_short |
Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska |
title_full |
Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska |
title_fullStr |
Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska |
title_full_unstemmed |
Age, Food, and Migration of Dolly Varden Smolts in Southeastern Alaska |
title_sort |
age, food, and migration of dolly varden smolts in southeastern alaska |
publisher |
Canadian Science Publishing |
publishDate |
1970 |
url |
http://dx.doi.org/10.1139/f70-116 http://www.nrcresearchpress.com/doi/pdf/10.1139/f70-116 |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) ENVELOPE(177.167,177.167,-84.983,-84.983) ENVELOPE(7.656,7.656,62.534,62.534) ENVELOPE(-101.115,-101.115,69.488,69.488) ENVELOPE(-103.901,-103.901,57.217,57.217) ENVELOPE(-123.120,-123.120,61.100,61.100) |
geographic |
Keta Weir Varden Admiralty Island Hood Bay Bay Creek |
geographic_facet |
Keta Weir Varden Admiralty Island Hood Bay Bay Creek |
genre |
Pink salmon Alaska |
genre_facet |
Pink salmon Alaska |
op_source |
Journal of the Fisheries Research Board of Canada volume 27, issue 6, page 991-1004 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f70-116 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
27 |
container_issue |
6 |
container_start_page |
991 |
op_container_end_page |
1004 |
_version_ |
1785573054883037184 |