Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field
Through the 137Cs mass balance method, annual consumption rates were estimated for juvenile Atlantic salmon parr and precocious males, as well as brook trout from 4 sites within the Ste Marguerite river system, Quebec. With explicit age analysis, feeding rates and growth rates were derived on an ind...
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McGill University
1998
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ftcanadathes:oai:collectionscanada.gc.ca:QMM.20883 2023-05-15T15:29:09+02:00 Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field Tucker, Strahan. Rasmussen, J. B. (advisor) Master of Science (Department of Biology.) 1998 application/pdf http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20883 en eng McGill University alephsysno: 001641346 proquestno: MQ44304 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20883 All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. Atlantic salmon -- Food -- Québec (Province) -- Sainte-Marguerite River Atlantic salmon -- Québec (Province) -- Sainte-Marguerite River -- Growth Brook trout -- Food -- Québec (Province) -- Sainte-Marguerite River Brook trout -- Québec (Province) -- Sainte-Marguerite River -- Growth Electronic Thesis or Dissertation 1998 ftcanadathes 2014-02-16T01:06:18Z Through the 137Cs mass balance method, annual consumption rates were estimated for juvenile Atlantic salmon parr and precocious males, as well as brook trout from 4 sites within the Ste Marguerite river system, Quebec. With explicit age analysis, feeding rates and growth rates were derived on an individual fish and age class basis. These represent the first consumption estimates for Atlantic salmon in the wild. The individual fish approach provided a range of data for a single site, as opposed to a single estimate per age class, allowing for an evaluation of the relationship between consumption and growth for each species or life-history variant. Subsequently, the concept of field maintenance ration was introduced as the intercept of consumption over growth. Salmonid feeding rates were coupled with density estimates to derive total fish exploitation rates for two streams. The application of age- and site-specific feeding rates derived from the 137Cs mass balance method, solved a long standing paradox in stream ecology as all previously inferred salmonid exploitation rates have been in excess of prey turnover. (Abstract shortened by UMI.) Thesis Atlantic salmon Salmo salar Theses Canada/Thèses Canada (Library and Archives Canada) Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite River ENVELOPE(-109.929,-109.929,57.560,57.560) |
institution |
Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
Atlantic salmon -- Food -- Québec (Province) -- Sainte-Marguerite River Atlantic salmon -- Québec (Province) -- Sainte-Marguerite River -- Growth Brook trout -- Food -- Québec (Province) -- Sainte-Marguerite River Brook trout -- Québec (Province) -- Sainte-Marguerite River -- Growth |
spellingShingle |
Atlantic salmon -- Food -- Québec (Province) -- Sainte-Marguerite River Atlantic salmon -- Québec (Province) -- Sainte-Marguerite River -- Growth Brook trout -- Food -- Québec (Province) -- Sainte-Marguerite River Brook trout -- Québec (Province) -- Sainte-Marguerite River -- Growth Tucker, Strahan. Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field |
topic_facet |
Atlantic salmon -- Food -- Québec (Province) -- Sainte-Marguerite River Atlantic salmon -- Québec (Province) -- Sainte-Marguerite River -- Growth Brook trout -- Food -- Québec (Province) -- Sainte-Marguerite River Brook trout -- Québec (Province) -- Sainte-Marguerite River -- Growth |
description |
Through the 137Cs mass balance method, annual consumption rates were estimated for juvenile Atlantic salmon parr and precocious males, as well as brook trout from 4 sites within the Ste Marguerite river system, Quebec. With explicit age analysis, feeding rates and growth rates were derived on an individual fish and age class basis. These represent the first consumption estimates for Atlantic salmon in the wild. The individual fish approach provided a range of data for a single site, as opposed to a single estimate per age class, allowing for an evaluation of the relationship between consumption and growth for each species or life-history variant. Subsequently, the concept of field maintenance ration was introduced as the intercept of consumption over growth. Salmonid feeding rates were coupled with density estimates to derive total fish exploitation rates for two streams. The application of age- and site-specific feeding rates derived from the 137Cs mass balance method, solved a long standing paradox in stream ecology as all previously inferred salmonid exploitation rates have been in excess of prey turnover. (Abstract shortened by UMI.) |
author2 |
Rasmussen, J. B. (advisor) |
format |
Thesis |
author |
Tucker, Strahan. |
author_facet |
Tucker, Strahan. |
author_sort |
Tucker, Strahan. |
title |
Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field |
title_short |
Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field |
title_full |
Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field |
title_fullStr |
Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field |
title_full_unstemmed |
Using radiocesium (137Cs) to measure and compare the bioenergetic budgets of juvenile Atlantic salmon (Salmo salar) and brook trout (Salvelinus fontinalis) in the field |
title_sort |
using radiocesium (137cs) to measure and compare the bioenergetic budgets of juvenile atlantic salmon (salmo salar) and brook trout (salvelinus fontinalis) in the field |
publisher |
McGill University |
publishDate |
1998 |
url |
http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20883 |
op_coverage |
Master of Science (Department of Biology.) |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-109.929,-109.929,57.560,57.560) |
geographic |
Marguerite Marguerite River |
geographic_facet |
Marguerite Marguerite River |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
alephsysno: 001641346 proquestno: MQ44304 Theses scanned by UMI/ProQuest. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20883 |
op_rights |
All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
_version_ |
1766359525949964288 |