Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries
Abstract To evaluate the species‐specific and stream‐specific suitability of juvenile salmonine habitat in the southern Lake Ontario watershed, we studied the effects of multiple environmental gradients on the first‐summer apparent survival and growth of various combinations of Atlantic salmon Salmo...
Published in: | Transactions of the American Fisheries Society |
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Online Access: | http://dx.doi.org/10.1577/t06-127.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/T06-127.1 |
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crwiley:10.1577/t06-127.1 2023-12-03T10:19:07+01:00 Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries Coghlan, Stephen M. Connerton, Michael J. Ringler, Neil H. Stewart, Donald J. Mead, Jerry V. 2007 http://dx.doi.org/10.1577/t06-127.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/T06-127.1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Transactions of the American Fisheries Society volume 136, issue 1, page 56-71 ISSN 0002-8487 1548-8659 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2007 crwiley https://doi.org/10.1577/t06-127.1 2023-11-09T13:53:36Z Abstract To evaluate the species‐specific and stream‐specific suitability of juvenile salmonine habitat in the southern Lake Ontario watershed, we studied the effects of multiple environmental gradients on the first‐summer apparent survival and growth of various combinations of Atlantic salmon Salmo salar , rainbow trout Oncorhynchus mykiss , and coho salmon O. kisutch stocked in tributaries. Costocking of either Oncorhynchus species had no detectable effect on the apparent survival or change in cohort biomass of Atlantic salmon, but their growth rates were reduced slightly when they were stocked with rainbow trout. Generally, Atlantic salmon outperformed their putative competitors. Summer temperatures were near the physiological optimum for Atlantic salmon but may have limited the success of rainbow trout and especially coho salmon. Total salmonine biomass was maximized at sites in which only Atlantic salmon were planted. Apparent survival and biomass elaboration of Atlantic salmon varied inversely with stream size, temperature, and the abundance of wild salmonines and piscivores, whereas growth rate responded positively to moderate increases in summer temperature, agricultural development, and nutrient enrichment. These regional and species‐specific differences in stocked salmonine success may, in part, be explained by variations in temperature, geomorphology, and anthropogenic influences. We recommend that the feasibility of restoring Atlantic salmon continues to be evaluated, especially in those tributaries considered to be of marginal quality for other salmonines. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library (via Crossref) Southern Lake ENVELOPE(-94.333,-94.333,62.217,62.217) Transactions of the American Fisheries Society 136 1 56 71 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Coghlan, Stephen M. Connerton, Michael J. Ringler, Neil H. Stewart, Donald J. Mead, Jerry V. Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract To evaluate the species‐specific and stream‐specific suitability of juvenile salmonine habitat in the southern Lake Ontario watershed, we studied the effects of multiple environmental gradients on the first‐summer apparent survival and growth of various combinations of Atlantic salmon Salmo salar , rainbow trout Oncorhynchus mykiss , and coho salmon O. kisutch stocked in tributaries. Costocking of either Oncorhynchus species had no detectable effect on the apparent survival or change in cohort biomass of Atlantic salmon, but their growth rates were reduced slightly when they were stocked with rainbow trout. Generally, Atlantic salmon outperformed their putative competitors. Summer temperatures were near the physiological optimum for Atlantic salmon but may have limited the success of rainbow trout and especially coho salmon. Total salmonine biomass was maximized at sites in which only Atlantic salmon were planted. Apparent survival and biomass elaboration of Atlantic salmon varied inversely with stream size, temperature, and the abundance of wild salmonines and piscivores, whereas growth rate responded positively to moderate increases in summer temperature, agricultural development, and nutrient enrichment. These regional and species‐specific differences in stocked salmonine success may, in part, be explained by variations in temperature, geomorphology, and anthropogenic influences. We recommend that the feasibility of restoring Atlantic salmon continues to be evaluated, especially in those tributaries considered to be of marginal quality for other salmonines. |
format |
Article in Journal/Newspaper |
author |
Coghlan, Stephen M. Connerton, Michael J. Ringler, Neil H. Stewart, Donald J. Mead, Jerry V. |
author_facet |
Coghlan, Stephen M. Connerton, Michael J. Ringler, Neil H. Stewart, Donald J. Mead, Jerry V. |
author_sort |
Coghlan, Stephen M. |
title |
Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries |
title_short |
Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries |
title_full |
Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries |
title_fullStr |
Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries |
title_full_unstemmed |
Survival and Growth Responses of Juvenile Salmonines Stocked in Eastern Lake Ontario Tributaries |
title_sort |
survival and growth responses of juvenile salmonines stocked in eastern lake ontario tributaries |
publisher |
Wiley |
publishDate |
2007 |
url |
http://dx.doi.org/10.1577/t06-127.1 https://afspubs.onlinelibrary.wiley.com/doi/pdf/10.1577/T06-127.1 |
long_lat |
ENVELOPE(-94.333,-94.333,62.217,62.217) |
geographic |
Southern Lake |
geographic_facet |
Southern Lake |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Transactions of the American Fisheries Society volume 136, issue 1, page 56-71 ISSN 0002-8487 1548-8659 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1577/t06-127.1 |
container_title |
Transactions of the American Fisheries Society |
container_volume |
136 |
container_issue |
1 |
container_start_page |
56 |
op_container_end_page |
71 |
_version_ |
1784266262860267520 |