Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)
Identifieur interne : 000C98 ( Istex/Corpus ); précédent : 000C97; suivant : 000C99Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)
Auteurs : J. M. Craig ; M. V. Thomas ; S. J. NicholsSource :
- Journal of Applied Ichthyology [ 0175-8659 ] ; 2005-04.
Abstract
Several USA state, federal, and Canadian agencies study lake sturgeon (Acipenser fulvescens) within the St Clair River and Lake St Clair, collectively referred to hereafter as the St Clair River (SCR) system. Previously, there has been no set standard for determining condition for SCR system lake sturgeon. Condition measures the variation from the expected weight for length as an indicator of fatness, general well‐being, gonad development, etc. The aim of this project was to determine the length–weight relationship of lake sturgeon caught from the SCR system, from which a relative condition factor (Kn) equation could be derived. Total length (TL, mm) and weight (W, kg) were measured for 1074 lake sturgeon (101 males and 16 females were identifiable) collected by setline and bottom trawl from the SCR system in May–September, 1997–2002. Analysis of covariance found no difference in the length–weight relationship between sampling gear or sex. Least‐squares regression of log10W × log10TL produced the overall equation logW = 3.365logTL − 9.320. Using the exponential form of the slope and y‐intercept, relative condition factor for lake sturgeon from the SCR system can be calculated as Kn = W/[(4.786 × 10−10)(TL3.365)]. Equations for males and females were also developed. Overall, body condition was significantly correlated with both age and girth; no significant difference in Kn by sex was found. In general, the SCR lake sturgeon population was near the upper ends of growth and condition ranges listed in the literature, comparable with those populations that are at similar latitudes. Although condition factors should be interpreted with caution, proper use of a standard equation provides a non‐lethal measure of overall fish health that can be used by biologists and managers in ongoing efforts to restore lake sturgeon throughout the Great Lakes.
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DOI: 10.1111/j.1439-0426.2004.00635.x
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Previously, there has been no set standard for determining condition for SCR system lake sturgeon. Condition measures the variation from the expected weight for length as an indicator of fatness, general well‐being, gonad development, etc. The aim of this project was to determine the length–weight relationship of lake sturgeon caught from the SCR system, from which a relative condition factor (Kn) equation could be derived. Total length (TL, mm) and weight (W, kg) were measured for 1074 lake sturgeon (101 males and 16 females were identifiable) collected by setline and bottom trawl from the SCR system in May–September, 1997–2002. Analysis of covariance found no difference in the length–weight relationship between sampling gear or sex. Least‐squares regression of log10W × log10TL produced the overall equation logW = 3.365logTL − 9.320. Using the exponential form of the slope and y‐intercept, relative condition factor for lake sturgeon from the SCR system can be calculated as Kn = W/[(4.786 × 10−10)(TL3.365)]. Equations for males and females were also developed. Overall, body condition was significantly correlated with both age and girth; no significant difference in Kn by sex was found. In general, the SCR lake sturgeon population was near the upper ends of growth and condition ranges listed in the literature, comparable with those populations that are at similar latitudes. Although condition factors should be interpreted with caution, proper use of a standard equation provides a non‐lethal measure of overall fish health that can be used by biologists and managers in ongoing efforts to restore lake sturgeon throughout the Great Lakes.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>J. M. 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Previously, there has been no set standard for determining condition for SCR system lake sturgeon. Condition measures the variation from the expected weight for length as an indicator of fatness, general well‐being, gonad development, etc. The aim of this project was to determine the length–weight relationship of lake sturgeon caught from the SCR system, from which a relative condition factor (Kn) equation could be derived. Total length (TL, mm) and weight (W, kg) were measured for 1074 lake sturgeon (101 males and 16 females were identifiable) collected by setline and bottom trawl from the SCR system in May–September, 1997–2002. Analysis of covariance found no difference in the length–weight relationship between sampling gear or sex. Least‐squares regression of log10W × log10TL produced the overall equation logW = 3.365logTL − 9.320. Using the exponential form of the slope and y‐intercept, relative condition factor for lake sturgeon from the SCR system can be calculated as Kn = W/[(4.786 × 10−10)(TL3.365)]. Equations for males and females were also developed. Overall, body condition was significantly correlated with both age and girth; no significant difference in Kn by sex was found. In general, the SCR lake sturgeon population was near the upper ends of growth and condition ranges listed in the literature, comparable with those populations that are at similar latitudes. Although condition factors should be interpreted with caution, proper use of a standard equation provides a non‐lethal measure of overall fish health that can be used by biologists and managers in ongoing efforts to restore lake sturgeon throughout the Great Lakes.</abstract><qualityIndicators><score>6.981</score><pdfVersion>1.4</pdfVersion><pdfPageSize>595 x 842 pts (A4)</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1870</abstractCharCount><pdfWordCount>3481</pdfWordCount><pdfCharCount>22206</pdfCharCount><pdfPageCount>5</pdfPageCount><abstractWordCount>278</abstractWordCount></qualityIndicators><title>Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)</title><genre><json:string>article</json:string></genre><host><volume>21</volume><publisherId><json:string>JAI</json:string></publisherId><pages><total>5</total><last>85</last><first>81</first></pages><issn><json:string>0175-8659</json:string></issn><issue>2</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1439-0426</json:string></eissn><title>Journal of Applied Ichthyology</title><doi><json:string>10.1111/(ISSN)1439-0426</json:string></doi></host><categories><wos><json:string>science</json:string><json:string>marine & freshwater biology</json:string><json:string>fisheries</json:string></wos><scienceMetrix><json:string>applied sciences</json:string><json:string>agriculture, fisheries & forestry</json:string><json:string>fisheries</json:string></scienceMetrix></categories><publicationDate>2005</publicationDate><copyrightDate>2005</copyrightDate><doi><json:string>10.1111/j.1439-0426.2004.00635.x</json:string></doi><id>1101B16A44D0D207646501A1E01595BAF1B2E59A</id><score>0.08612785</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/1101B16A44D0D207646501A1E01595BAF1B2E59A/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/1101B16A44D0D207646501A1E01595BAF1B2E59A/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/1101B16A44D0D207646501A1E01595BAF1B2E59A/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Verlag GmbH</publisher><pubPlace>Berlin, Germany</pubPlace><availability><p>WILEY</p></availability><date>2005</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)</title><author xml:id="author-1"><persName><forename type="first">J. M.</forename><surname>Craig</surname></persName><affiliation>United States Geological Survey, Great Lakes Science Center, Ann Arbor, MI</affiliation></author><author xml:id="author-2"><persName><forename type="first">M. V.</forename><surname>Thomas</surname></persName><affiliation>Michigan Department of Natural Resources, Mt. Clemens Fisheries Research Station, Mt Clemens, MI, USA</affiliation></author><author xml:id="author-3"><persName><forename type="first">S. J.</forename><surname>Nichols</surname></persName><affiliation>United States Geological Survey, Great Lakes Science Center, Ann Arbor, MI</affiliation></author></analytic><monogr><title level="j">Journal of Applied Ichthyology</title><idno type="pISSN">0175-8659</idno><idno type="eISSN">1439-0426</idno><idno type="DOI">10.1111/(ISSN)1439-0426</idno><imprint><publisher>Blackwell Verlag GmbH</publisher><pubPlace>Berlin, Germany</pubPlace><date type="published" when="2005-04"></date><biblScope unit="volume">21</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="81">81</biblScope><biblScope unit="page" to="85">85</biblScope></imprint></monogr><idno type="istex">1101B16A44D0D207646501A1E01595BAF1B2E59A</idno><idno type="DOI">10.1111/j.1439-0426.2004.00635.x</idno><idno type="ArticleID">JAI635</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2005</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Several USA state, federal, and Canadian agencies study lake sturgeon (Acipenser fulvescens) within the St Clair River and Lake St Clair, collectively referred to hereafter as the St Clair River (SCR) system. Previously, there has been no set standard for determining condition for SCR system lake sturgeon. Condition measures the variation from the expected weight for length as an indicator of fatness, general well‐being, gonad development, etc. The aim of this project was to determine the length–weight relationship of lake sturgeon caught from the SCR system, from which a relative condition factor (Kn) equation could be derived. Total length (TL, mm) and weight (W, kg) were measured for 1074 lake sturgeon (101 males and 16 females were identifiable) collected by setline and bottom trawl from the SCR system in May–September, 1997–2002. Analysis of covariance found no difference in the length–weight relationship between sampling gear or sex. Least‐squares regression of log10W × log10TL produced the overall equation logW = 3.365logTL − 9.320. Using the exponential form of the slope and y‐intercept, relative condition factor for lake sturgeon from the SCR system can be calculated as Kn = W/[(4.786 × 10−10)(TL3.365)]. Equations for males and females were also developed. Overall, body condition was significantly correlated with both age and girth; no significant difference in Kn by sex was found. In general, the SCR lake sturgeon population was near the upper ends of growth and condition ranges listed in the literature, comparable with those populations that are at similar latitudes. Although condition factors should be interpreted with caution, proper use of a standard equation provides a non‐lethal measure of overall fish health that can be used by biologists and managers in ongoing efforts to restore lake sturgeon throughout the Great Lakes.</p></abstract></profileDesc><revisionDesc><change when="2005-04">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/1101B16A44D0D207646501A1E01595BAF1B2E59A/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Verlag GmbH</publisherName><publisherLoc>Berlin, Germany</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1439-0426</doi><issn type="print">0175-8659</issn><issn type="electronic">1439-0426</issn><idGroup><id type="product" value="JAI"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF APPLIED ICHTHYOLOGY">Journal of Applied Ichthyology</title></titleGroup></publicationMeta><publicationMeta level="part" position="04002"><doi origin="wiley">10.1111/jai.2005.21.issue-2</doi><numberingGroup><numbering type="journalVolume" number="21">21</numbering><numbering type="journalIssue" number="2">2</numbering></numberingGroup><coverDate startDate="2005-04">April 2005</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="1" status="forIssue"><doi origin="wiley">10.1111/j.1439-0426.2004.00635.x</doi><idGroup><id type="unit" value="JAI635"></id></idGroup><countGroup><count type="pageTotal" number="5"></count></countGroup><titleGroup><title type="tocHeading1">Original Articles</title></titleGroup><eventGroup><event type="firstOnline" date="2005-03-29"></event><event type="publishedOnlineFinalForm" date="2005-03-29"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.5 mode:FullText source:FullText result:FullText" date="2010-04-07"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-28"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-23"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="81">81</numbering><numbering type="pageLast" number="85">85</numbering></numberingGroup><correspondenceTo><b>Author's address:</b> Jaquelyn M. Craig, United States Geological Survey, Great Lakes Science Center, 1451 Green Rd, Ann Arbor, MI 48105, USA.
E‐mail: <email>jcraig@usgs.gov</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:JAI.JAI635.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received: April 10, 2004 Accepted: October 26, 2004</unparsedEditorialHistory><countGroup><count type="figureTotal" number="4"></count><count type="tableTotal" number="3"></count></countGroup><titleGroup><title type="main">Length–weight relationship and a relative condition factor equation for lake sturgeon (<i>Acipenser fulvescens</i>) from the St Clair River system (Michigan, USA)</title><title type="shortAuthors">J. M. Craig, M. V. Thomas and S. J. Nichols</title><title type="short">Body condition of St Clair River system lake sturgeon</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>J. M.</givenNames><familyName>Craig</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>M. V.</givenNames><familyName>Thomas</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>S. J.</givenNames><familyName>Nichols</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="US"><unparsedAffiliation>United States Geological Survey, Great Lakes Science Center, Ann Arbor, MI</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="US"><unparsedAffiliation>Michigan Department of Natural Resources, Mt. Clemens Fisheries Research Station, Mt Clemens, MI, USA</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Summary</title><p>Several USA state, federal, and Canadian agencies study lake sturgeon (<i>Acipenser fulvescens</i>) within the St Clair River and Lake St Clair, collectively referred to hereafter as the St Clair River (SCR) system. Previously, there has been no set standard for determining condition for SCR system lake sturgeon. Condition measures the variation from the expected weight for length as an indicator of fatness, general well‐being, gonad development, etc. The aim of this project was to determine the length–weight relationship of lake sturgeon caught from the SCR system, from which a relative condition factor (<i>K</i><sub>n</sub>) equation could be derived. Total length (TL, mm) and weight (W, kg) were measured for 1074 lake sturgeon (101 males and 16 females were identifiable) collected by setline and bottom trawl from the SCR system in May–September, 1997–2002. Analysis of covariance found no difference in the length–weight relationship between sampling gear or sex. Least‐squares regression of log<sub>10</sub>W × log<sub>10</sub>TL produced the overall equation logW = 3.365logTL − 9.320. Using the exponential form of the slope and <i>y</i>‐intercept, relative condition factor for lake sturgeon from the SCR system can be calculated as <i>K</i><sub>n</sub> = W/[(4.786 × 10<sup>−10</sup>)(TL<sup>3.365</sup>)]. Equations for males and females were also developed. Overall, body condition was significantly correlated with both age and girth; no significant difference in <i>K</i><sub>n</sub> by sex was found. In general, the SCR lake sturgeon population was near the upper ends of growth and condition ranges listed in the literature, comparable with those populations that are at similar latitudes. Although condition factors should be interpreted with caution, proper use of a standard equation provides a non‐lethal measure of overall fish health that can be used by biologists and managers in ongoing efforts to restore lake sturgeon throughout the Great Lakes.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Body condition of St Clair River system lake sturgeon</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)</title></titleInfo><name type="personal"><namePart type="given">J. M.</namePart><namePart type="family">Craig</namePart><affiliation>United States Geological Survey, Great Lakes Science Center, Ann Arbor, MI</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M. V.</namePart><namePart type="family">Thomas</namePart><affiliation>Michigan Department of Natural Resources, Mt. Clemens Fisheries Research Station, Mt Clemens, MI, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S. J.</namePart><namePart type="family">Nichols</namePart><affiliation>United States Geological Survey, Great Lakes Science Center, Ann Arbor, MI</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Verlag GmbH</publisher><place><placeTerm type="text">Berlin, Germany</placeTerm></place><dateIssued encoding="w3cdtf">2005-04</dateIssued><edition>Received: April 10, 2004 Accepted: October 26, 2004</edition><copyrightDate encoding="w3cdtf">2005</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">4</extent><extent unit="tables">3</extent></physicalDescription><abstract lang="en">Several USA state, federal, and Canadian agencies study lake sturgeon (Acipenser fulvescens) within the St Clair River and Lake St Clair, collectively referred to hereafter as the St Clair River (SCR) system. Previously, there has been no set standard for determining condition for SCR system lake sturgeon. Condition measures the variation from the expected weight for length as an indicator of fatness, general well‐being, gonad development, etc. The aim of this project was to determine the length–weight relationship of lake sturgeon caught from the SCR system, from which a relative condition factor (Kn) equation could be derived. Total length (TL, mm) and weight (W, kg) were measured for 1074 lake sturgeon (101 males and 16 females were identifiable) collected by setline and bottom trawl from the SCR system in May–September, 1997–2002. Analysis of covariance found no difference in the length–weight relationship between sampling gear or sex. Least‐squares regression of log10W × log10TL produced the overall equation logW = 3.365logTL − 9.320. Using the exponential form of the slope and y‐intercept, relative condition factor for lake sturgeon from the SCR system can be calculated as Kn = W/[(4.786 × 10−10)(TL3.365)]. Equations for males and females were also developed. Overall, body condition was significantly correlated with both age and girth; no significant difference in Kn by sex was found. In general, the SCR lake sturgeon population was near the upper ends of growth and condition ranges listed in the literature, comparable with those populations that are at similar latitudes. Although condition factors should be interpreted with caution, proper use of a standard equation provides a non‐lethal measure of overall fish health that can be used by biologists and managers in ongoing efforts to restore lake sturgeon throughout the Great Lakes.</abstract><relatedItem type="host"><titleInfo><title>Journal of Applied Ichthyology</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">0175-8659</identifier><identifier type="eISSN">1439-0426</identifier><identifier type="DOI">10.1111/(ISSN)1439-0426</identifier><identifier type="PublisherID">JAI</identifier><part><date>2005</date><detail type="volume"><caption>vol.</caption><number>21</number></detail><detail type="issue"><caption>no.</caption><number>2</number></detail><extent unit="pages"><start>81</start><end>85</end><total>5</total></extent></part></relatedItem><identifier type="istex">1101B16A44D0D207646501A1E01595BAF1B2E59A</identifier><identifier type="DOI">10.1111/j.1439-0426.2004.00635.x</identifier><identifier type="ArticleID">JAI635</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Verlag GmbH</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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|texte= Length–weight relationship and a relative condition factor equation for lake sturgeon (Acipenser fulvescens) from the St Clair River system (Michigan, USA)
}}
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