The timing of spawning migration: implications of environmental variation, life history, and sex
During 1960–2002, the arrival times of all spawning male and female Atlantic salmon (Salmo salar L., 1758) and brown trout (Salmo trutta L., 1758) entering Dalälven River were recorded. To study the role of environmental variation in spawning migration timing, we used long-term temperature (river an...
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crcansciencepubl:10.1139/z04-184 2023-12-17T10:27:26+01:00 The timing of spawning migration: implications of environmental variation, life history, and sex Dahl, Jonas Dannewitz, Johan Karlsson, Lars Petersson, Erik Löf, Anna Ragnarsson, Bjarne 2004 http://dx.doi.org/10.1139/z04-184 http://www.nrcresearchpress.com/doi/pdf/10.1139/z04-184 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 82, issue 12, page 1864-1870 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2004 crcansciencepubl https://doi.org/10.1139/z04-184 2023-11-19T13:39:39Z During 1960–2002, the arrival times of all spawning male and female Atlantic salmon (Salmo salar L., 1758) and brown trout (Salmo trutta L., 1758) entering Dalälven River were recorded. To study the role of environmental variation in spawning migration timing, we used long-term temperature (river and sea) and river discharge data. For salmon, the spawning migration peak was strongly correlated with mean monthly sea and river temperatures during spring: salmon arrived earlier when temperatures were higher and later when temperatures were lower. River discharge explained little of the variation in migration timing. Female salmon migration showed a stronger correlation with temperature than male salmon migration, and female salmon arrived ≈18 days earlier than males. Trout showed a larger variation in their spawning migration, but river and sea temperatures and river discharge explained little of the variation. Trout females arrived ≈7 days earlier than males. The sea and river temperatures were highly correlated during the spawning migration, indicating that large climate processes determine the temperature regimes in the Baltic Sea and its tributaries. Time of arrival at the river was not correlated with ovulation date; a female salmon or brown trout arriving late could ovulate almost immediately, whereas a female arriving early could wait to ovulate. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 82 12 1864 1870 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Dahl, Jonas Dannewitz, Johan Karlsson, Lars Petersson, Erik Löf, Anna Ragnarsson, Bjarne The timing of spawning migration: implications of environmental variation, life history, and sex |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
During 1960–2002, the arrival times of all spawning male and female Atlantic salmon (Salmo salar L., 1758) and brown trout (Salmo trutta L., 1758) entering Dalälven River were recorded. To study the role of environmental variation in spawning migration timing, we used long-term temperature (river and sea) and river discharge data. For salmon, the spawning migration peak was strongly correlated with mean monthly sea and river temperatures during spring: salmon arrived earlier when temperatures were higher and later when temperatures were lower. River discharge explained little of the variation in migration timing. Female salmon migration showed a stronger correlation with temperature than male salmon migration, and female salmon arrived ≈18 days earlier than males. Trout showed a larger variation in their spawning migration, but river and sea temperatures and river discharge explained little of the variation. Trout females arrived ≈7 days earlier than males. The sea and river temperatures were highly correlated during the spawning migration, indicating that large climate processes determine the temperature regimes in the Baltic Sea and its tributaries. Time of arrival at the river was not correlated with ovulation date; a female salmon or brown trout arriving late could ovulate almost immediately, whereas a female arriving early could wait to ovulate. |
format |
Article in Journal/Newspaper |
author |
Dahl, Jonas Dannewitz, Johan Karlsson, Lars Petersson, Erik Löf, Anna Ragnarsson, Bjarne |
author_facet |
Dahl, Jonas Dannewitz, Johan Karlsson, Lars Petersson, Erik Löf, Anna Ragnarsson, Bjarne |
author_sort |
Dahl, Jonas |
title |
The timing of spawning migration: implications of environmental variation, life history, and sex |
title_short |
The timing of spawning migration: implications of environmental variation, life history, and sex |
title_full |
The timing of spawning migration: implications of environmental variation, life history, and sex |
title_fullStr |
The timing of spawning migration: implications of environmental variation, life history, and sex |
title_full_unstemmed |
The timing of spawning migration: implications of environmental variation, life history, and sex |
title_sort |
timing of spawning migration: implications of environmental variation, life history, and sex |
publisher |
Canadian Science Publishing |
publishDate |
2004 |
url |
http://dx.doi.org/10.1139/z04-184 http://www.nrcresearchpress.com/doi/pdf/10.1139/z04-184 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Zoology volume 82, issue 12, page 1864-1870 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z04-184 |
container_title |
Canadian Journal of Zoology |
container_volume |
82 |
container_issue |
12 |
container_start_page |
1864 |
op_container_end_page |
1870 |
_version_ |
1785579301533384704 |