Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships
In this paper, we demonstrate how information from broodstocks can be combined with lab information on alevins to obtain annual stock-specific mortality estimates from early mortality syndromes (EMS) using a probabilistic approach, how a hierarchical model structure can be used to predict these mort...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f06-095 http://www.nrcresearchpress.com/doi/pdf/10.1139/f06-095 |
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crcansciencepubl:10.1139/f06-095 2023-12-17T10:27:21+01:00 Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships Michielsens, Catherine G.J Mäntyniemi, Samu Vuorinen, Pekka J 2006 http://dx.doi.org/10.1139/f06-095 http://www.nrcresearchpress.com/doi/pdf/10.1139/f06-095 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 63, issue 9, page 1968-1981 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2006 crcansciencepubl https://doi.org/10.1139/f06-095 2023-11-19T13:39:09Z In this paper, we demonstrate how information from broodstocks can be combined with lab information on alevins to obtain annual stock-specific mortality estimates from early mortality syndromes (EMS) using a probabilistic approach, how a hierarchical model structure can be used to predict these mortality rates for related, partly sampled, or unsampled stocks, and why these estimates should be used to remove the effect of this mortality on stockrecruit estimates. The approach has been illustrated for Atlantic salmon (Salmo salar) stocks in the Baltic Sea affected by the M74 syndrome. Results indicate that data on the proportion of M74-affected females, commonly used to approximate M74 mortality, overestimate actual M74-related mortality because of a declining trend in mortality among offspring of these females. The stock-specific M74 mortality estimates are used to account for nonstationarity in the stockrecruitment relationship caused by this fluctuating mortality. Because hierarchical meta-analyses assume exchangeability, the effect of M74 mortality is removed before including these stocks within hierarchical stockrecruit analyses of Atlantic salmon stocks, which are commonly unaffected by M74 mortality. Failure to remove the effect of M74 mortality on the stockrecruit data results in underestimation of the stock's productivity and resilience to exploitation, especially in the case of stocks with steep stockrecruit curves. Article in Journal/Newspaper Atlantic salmon Salmo salar Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 63 9 1968 1981 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Michielsens, Catherine G.J Mäntyniemi, Samu Vuorinen, Pekka J Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
In this paper, we demonstrate how information from broodstocks can be combined with lab information on alevins to obtain annual stock-specific mortality estimates from early mortality syndromes (EMS) using a probabilistic approach, how a hierarchical model structure can be used to predict these mortality rates for related, partly sampled, or unsampled stocks, and why these estimates should be used to remove the effect of this mortality on stockrecruit estimates. The approach has been illustrated for Atlantic salmon (Salmo salar) stocks in the Baltic Sea affected by the M74 syndrome. Results indicate that data on the proportion of M74-affected females, commonly used to approximate M74 mortality, overestimate actual M74-related mortality because of a declining trend in mortality among offspring of these females. The stock-specific M74 mortality estimates are used to account for nonstationarity in the stockrecruitment relationship caused by this fluctuating mortality. Because hierarchical meta-analyses assume exchangeability, the effect of M74 mortality is removed before including these stocks within hierarchical stockrecruit analyses of Atlantic salmon stocks, which are commonly unaffected by M74 mortality. Failure to remove the effect of M74 mortality on the stockrecruit data results in underestimation of the stock's productivity and resilience to exploitation, especially in the case of stocks with steep stockrecruit curves. |
format |
Article in Journal/Newspaper |
author |
Michielsens, Catherine G.J Mäntyniemi, Samu Vuorinen, Pekka J |
author_facet |
Michielsens, Catherine G.J Mäntyniemi, Samu Vuorinen, Pekka J |
author_sort |
Michielsens, Catherine G.J |
title |
Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships |
title_short |
Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships |
title_full |
Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships |
title_fullStr |
Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships |
title_full_unstemmed |
Estimation of annual mortality rates caused by early mortality syndromes (EMS) and their impact on salmonid stockrecruit relationships |
title_sort |
estimation of annual mortality rates caused by early mortality syndromes (ems) and their impact on salmonid stockrecruit relationships |
publisher |
Canadian Science Publishing |
publishDate |
2006 |
url |
http://dx.doi.org/10.1139/f06-095 http://www.nrcresearchpress.com/doi/pdf/10.1139/f06-095 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 63, issue 9, page 1968-1981 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f06-095 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
63 |
container_issue |
9 |
container_start_page |
1968 |
op_container_end_page |
1981 |
_version_ |
1785579199554125824 |