Spawning migration of American eel Anguilla rostrata from pristine (1843–1872) to contemporary (1963–1990) periods in the St Lawrence Estuary, Canada
Identifieur interne : 000F52 ( Istex/Corpus ); précédent : 000F51; suivant : 000F53Spawning migration of American eel Anguilla rostrata from pristine (1843–1872) to contemporary (1963–1990) periods in the St Lawrence Estuary, Canada
Auteurs : G. Verreault ; M. Mingelbier ; P. DumontSource :
- Journal of Fish Biology [ 0022-1112 ] ; 2012-07.
English descriptors
- KwdEn :
Abstract
Daily American eel Anguilla rostrata catches and their dates of passage (starting, median and ending dates) were compared between pristine (1843–1872) and contemporary periods (1963–1990) to determine any changes and see whether these were related to environmental variations and water discharge regulation. Timing and duration of A. rostrata migration patterns differed significantly between the two periods. In the contemporary period, migrating A. rostrata were intercepted significantly earlier than in pristine times (18 days earlier on average), and ended at the same average period. Early A. rostrata migration was also significantly related to high spring flow and secondarily to high spring temperature, while migration ended later when high temperature or low water level occurred during the autumn period. A recent slight increase in the water temperature of the St Lawrence River could partially explain the earlier A. rostrata migration observed during the contemporary period. In return, the effect of high spring flow should have been more contrasted if the river discharge would have not been regulated. Recent A. rostrata production now being mainly restricted to the lower part of St Lawrence River mainstream, resulting shorter travelling distance to the estuary may explain why migrating progress was earlier during the contemporary period.
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DOI: 10.1111/j.1095-8649.2012.03366.x
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ISTEX:9851564AA7D9CE2F9158B79828E4CF7D81185683Le document en format XML
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Timing and duration of A. rostrata migration patterns differed significantly between the two periods. In the contemporary period, migrating A. rostrata were intercepted significantly earlier than in pristine times (18 days earlier on average), and ended at the same average period. Early A. rostrata migration was also significantly related to high spring flow and secondarily to high spring temperature, while migration ended later when high temperature or low water level occurred during the autumn period. A recent slight increase in the water temperature of the St Lawrence River could partially explain the earlier A. rostrata migration observed during the contemporary period. In return, the effect of high spring flow should have been more contrasted if the river discharge would have not been regulated. Recent A. rostrata production now being mainly restricted to the lower part of St Lawrence River mainstream, resulting shorter travelling distance to the estuary may explain why migrating progress was earlier during the contemporary period.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>G. Verreault</name><affiliations><json:string>Ministère des Ressources Naturelles et de la Faune du Québec, 186 rue Fraser, Rivière‐du‐Loup, Québec, G5R 1C8 Canada</json:string><json:string>E-mail: guy.verreault@mrnf.gouv.qc.ca</json:string></affiliations></json:item><json:item><name>M. Mingelbier</name><affiliations><json:string>Ministère des Ressources Naturelles et de la Faune du Québec, 880 chemin Ste‐Foy, Québec, G1S 4X4 Canada</json:string></affiliations></json:item><json:item><name>P. 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Timing and duration of A. rostrata migration patterns differed significantly between the two periods. In the contemporary period, migrating A. rostrata were intercepted significantly earlier than in pristine times (18 days earlier on average), and ended at the same average period. Early A. rostrata migration was also significantly related to high spring flow and secondarily to high spring temperature, while migration ended later when high temperature or low water level occurred during the autumn period. A recent slight increase in the water temperature of the St Lawrence River could partially explain the earlier A. rostrata migration observed during the contemporary period. In return, the effect of high spring flow should have been more contrasted if the river discharge would have not been regulated. 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Timing and duration of A. rostrata migration patterns differed significantly between the two periods. In the contemporary period, migrating A. rostrata were intercepted significantly earlier than in pristine times (18 days earlier on average), and ended at the same average period. Early A. rostrata migration was also significantly related to high spring flow and secondarily to high spring temperature, while migration ended later when high temperature or low water level occurred during the autumn period. A recent slight increase in the water temperature of the St Lawrence River could partially explain the earlier A. rostrata migration observed during the contemporary period. In return, the effect of high spring flow should have been more contrasted if the river discharge would have not been regulated. 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Journal of Fish Biology © 2012 The Fisheries Society of the British Isles</copyright><eventGroup><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:3.1.6 mode:FullText" date="2012-07-17"></event><event type="firstOnline" date="2012-07-17"></event><event type="publishedOnlineFinalForm" date="2012-07-17"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-30"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.3.4 mode:FullText" date="2015-02-25"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="387">387</numbering><numbering type="pageLast" number="407">407</numbering></numberingGroup><correspondenceTo> Tel.: +1 418 862 8213 ext. 306; email: <email>guy.verreault@mrnf.gouv.qc.ca</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:JFB.JFB3366.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="7"></count><count type="tableTotal" number="1"></count><count type="formulaTotal" number="0"></count><count type="referenceTotal" number="7"></count></countGroup><titleGroup><title type="main">Spawning migration of American eel <i>Anguilla rostrata</i> from pristine (1843–1872) to contemporary (1963–1990) periods in the St Lawrence Estuary, Canada</title><title type="shortAuthors">G. VERREAULT <i>ET AL</i>.</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" corresponding="yes"><personName><givenNames>G.</givenNames><familyName>Verreault</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>M.</givenNames><familyName>Mingelbier</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a3"><personName><givenNames>P.</givenNames><familyName>Dumont</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="CA"><unparsedAffiliation><i>Ministère des Ressources Naturelles et de la Faune du Québec, 186 rue Fraser, Rivière‐du‐Loup, Québec, G5R 1C8 Canada</i></unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="CA"><unparsedAffiliation><i>Ministère des Ressources Naturelles et de la Faune du Québec, 880 chemin Ste‐Foy, Québec, G1S 4X4 Canada</i></unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="CA"><unparsedAffiliation><i>Ministère des Ressources Naturelles et de la Faune du Québec, 201 Place Charles‐LeMoyne, Longueuil, Québec, J4K 2T5 Canada</i></unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">downstream migration</keyword><keyword xml:id="k2">duration</keyword><keyword xml:id="k3">silver eel</keyword><keyword xml:id="k4">timing</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><p>Daily American eel <i>Anguilla rostrata</i> catches and their dates of passage (starting, median and ending dates) were compared between pristine (1843–1872) and contemporary periods (1963–1990) to determine any changes and see whether these were related to environmental variations and water discharge regulation. Timing and duration of <i>A. rostrata</i> migration patterns differed significantly between the two periods. In the contemporary period, migrating <i>A. rostrata</i> were intercepted significantly earlier than in pristine times (18 days earlier on average), and ended at the same average period. Early <i>A. rostrata</i> migration was also significantly related to high spring flow and secondarily to high spring temperature, while migration ended later when high temperature or low water level occurred during the autumn period. A recent slight increase in the water temperature of the St Lawrence River could partially explain the earlier <i>A. rostrata</i> migration observed during the contemporary period. In return, the effect of high spring flow should have been more contrasted if the river discharge would have not been regulated. 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Timing and duration of A. rostrata migration patterns differed significantly between the two periods. In the contemporary period, migrating A. rostrata were intercepted significantly earlier than in pristine times (18 days earlier on average), and ended at the same average period. Early A. rostrata migration was also significantly related to high spring flow and secondarily to high spring temperature, while migration ended later when high temperature or low water level occurred during the autumn period. A recent slight increase in the water temperature of the St Lawrence River could partially explain the earlier A. rostrata migration observed during the contemporary period. In return, the effect of high spring flow should have been more contrasted if the river discharge would have not been regulated. Recent A. rostrata production now being mainly restricted to the lower part of St Lawrence River mainstream, resulting shorter travelling distance to the estuary may explain why migrating progress was earlier during the contemporary period.</abstract><subject lang="en"><genre>keywords</genre><topic>downstream migration</topic><topic>duration</topic><topic>silver eel</topic><topic>timing</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Fish Biology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0022-1112</identifier><identifier type="eISSN">1095-8649</identifier><identifier type="DOI">10.1111/(ISSN)1095-8649</identifier><identifier type="PublisherID">JFB</identifier><part><date>2012</date><detail type="title"><title>Fish Migration in the 21st Century: Opportunities and Challenges</title></detail><detail type="volume"><caption>vol.</caption><number>81</number></detail><detail type="issue"><caption>no.</caption><number>2</number></detail><extent unit="pages"><start>387</start><end>407</end><total>7</total></extent></part></relatedItem><identifier type="istex">9851564AA7D9CE2F9158B79828E4CF7D81185683</identifier><identifier type="DOI">10.1111/j.1095-8649.2012.03366.x</identifier><identifier type="ArticleID">JFB3366</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2012 The Authors. 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