Behavioural and physiological responses in early life phases of Atlantic sturgeon (Acipenser oxyrinchus Mitchill 1815) towards different substrates
Identifieur interne : 001286 ( Istex/Corpus ); précédent : 001285; suivant : 001287Behavioural and physiological responses in early life phases of Atlantic sturgeon (Acipenser oxyrinchus Mitchill 1815) towards different substrates
Auteurs : J. Gessner ; C. M. Kamerichs ; W. Kloas ; S. WuertzSource :
- Journal of Applied Ichthyology [ 0175-8659 ] ; 2009-10.
Abstract
The physiological and behavioural responses of early life phases in American Atlantic sturgeon (Acipenser oxyrinchus) towards sand and gravel substrate were examined during the first 15 days post‐hatch. The free embryos were reared in circular tanks with approximately 30% of the bottom surface covered with either coarse gravel or sand. A group reared in tanks without additional substrate served as a control. Diurnal differences in activity patterns were observed. Substrate use by the free embryos revealed significant differences during the first 5 days post‐hatch, being higher in the gravel group than in the sand group. The results in size of the free embryos revealed significant differences, with the gravel group showing the lowest total length and wet mass until the onset of exogenous feeding – although dry mass and energy contents were highest. In contrast, length and wet mass during yolk sac absorption were highest in the control group, but energy content at onset of exogenous feeding was 14% lower compared to the gravel group. The onset of exogenous feeding in the gravel group had a 1‐day delay when compared to the two other treatments. On day 14, following the successful establishment of exogenous feed uptake, the specific growth rate in wet mass (SGR) for the gravel group (0.250 ± 0.088) exceeded those of the two other treatments (sand 0.132 ± 0.038 and control 0.095 ± 0.020) significantly (Dunn’s n = 10 and n = 5, P < 0.05), indicating a compensational growth pattern. Cortisol concentrations in free embryos did not differ significantly among the three groups, providing no evidence for differences in stress levels among the three treatments until onset of exogenous feeding. The results strongly suggest that gravel is the most beneficial substrate for free embryo development of American Atlantic Sturgeon, impacting the physiological performance of their early life phases and reducing predation.
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DOI: 10.1111/j.1439-0426.2009.01246.x
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Gessner</name><affiliation><mods:affiliation>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</mods:affiliation></affiliation></author><author><name sortKey="Kamerichs, C M" sort="Kamerichs, C M" uniqKey="Kamerichs C" first="C. M." last="Kamerichs">C. M. Kamerichs</name><affiliation><mods:affiliation>Institute for Animal Husbandry at the Christian‐Albrechts‐University, Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Kloas, W" sort="Kloas, W" uniqKey="Kloas W" first="W." last="Kloas">W. Kloas</name><affiliation><mods:affiliation>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</mods:affiliation></affiliation><affiliation><mods:affiliation>Department for Endocrinology, Institute of Biology, Humboldt University, Berlin, Germany</mods:affiliation></affiliation></author><author><name sortKey="Wuertz, S" sort="Wuertz, S" uniqKey="Wuertz S" first="S." last="Wuertz">S. Wuertz</name><affiliation><mods:affiliation>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Applied Ichthyology</title><idno type="ISSN">0175-8659</idno><idno type="eISSN">1439-0426</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2009-10">2009-10</date><biblScope unit="volume">25</biblScope><biblScope unit="supplement">s2</biblScope><biblScope unit="page" from="83">83</biblScope><biblScope unit="page" to="90">90</biblScope></imprint><idno type="ISSN">0175-8659</idno></series><idno type="istex">99C16BB2577773E9B88C56E8EB8A7C0AC46A025A</idno><idno type="DOI">10.1111/j.1439-0426.2009.01246.x</idno><idno type="ArticleID">JAI1246</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0175-8659</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The physiological and behavioural responses of early life phases in American Atlantic sturgeon (Acipenser oxyrinchus) towards sand and gravel substrate were examined during the first 15 days post‐hatch. The free embryos were reared in circular tanks with approximately 30% of the bottom surface covered with either coarse gravel or sand. A group reared in tanks without additional substrate served as a control. Diurnal differences in activity patterns were observed. Substrate use by the free embryos revealed significant differences during the first 5 days post‐hatch, being higher in the gravel group than in the sand group. The results in size of the free embryos revealed significant differences, with the gravel group showing the lowest total length and wet mass until the onset of exogenous feeding – although dry mass and energy contents were highest. In contrast, length and wet mass during yolk sac absorption were highest in the control group, but energy content at onset of exogenous feeding was 14% lower compared to the gravel group. The onset of exogenous feeding in the gravel group had a 1‐day delay when compared to the two other treatments. On day 14, following the successful establishment of exogenous feed uptake, the specific growth rate in wet mass (SGR) for the gravel group (0.250 ± 0.088) exceeded those of the two other treatments (sand 0.132 ± 0.038 and control 0.095 ± 0.020) significantly (Dunn’s n = 10 and n = 5, P < 0.05), indicating a compensational growth pattern. Cortisol concentrations in free embryos did not differ significantly among the three groups, providing no evidence for differences in stress levels among the three treatments until onset of exogenous feeding. The results strongly suggest that gravel is the most beneficial substrate for free embryo development of American Atlantic Sturgeon, impacting the physiological performance of their early life phases and reducing predation.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>J. Gessner</name><affiliations><json:string>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</json:string></affiliations></json:item><json:item><name>C. M. Kamerichs</name><affiliations><json:string>Institute for Animal Husbandry at the Christian‐Albrechts‐University, Kiel, Germany</json:string></affiliations></json:item><json:item><name>W. Kloas</name><affiliations><json:string>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</json:string><json:string>Department for Endocrinology, Institute of Biology, Humboldt University, Berlin, Germany</json:string></affiliations></json:item><json:item><name>S. Wuertz</name><affiliations><json:string>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</json:string></affiliations></json:item></author><articleId><json:string>JAI1246</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>The physiological and behavioural responses of early life phases in American Atlantic sturgeon (Acipenser oxyrinchus) towards sand and gravel substrate were examined during the first 15 days post‐hatch. The free embryos were reared in circular tanks with approximately 30% of the bottom surface covered with either coarse gravel or sand. A group reared in tanks without additional substrate served as a control. Diurnal differences in activity patterns were observed. Substrate use by the free embryos revealed significant differences during the first 5 days post‐hatch, being higher in the gravel group than in the sand group. The results in size of the free embryos revealed significant differences, with the gravel group showing the lowest total length and wet mass until the onset of exogenous feeding – although dry mass and energy contents were highest. In contrast, length and wet mass during yolk sac absorption were highest in the control group, but energy content at onset of exogenous feeding was 14% lower compared to the gravel group. The onset of exogenous feeding in the gravel group had a 1‐day delay when compared to the two other treatments. On day 14, following the successful establishment of exogenous feed uptake, the specific growth rate in wet mass (SGR) for the gravel group (0.250 ± 0.088) exceeded those of the two other treatments (sand 0.132 ± 0.038 and control 0.095 ± 0.020) significantly (Dunn’s n = 10 and n = 5, P > 0.05), indicating a compensational growth pattern. Cortisol concentrations in free embryos did not differ significantly among the three groups, providing no evidence for differences in stress levels among the three treatments until onset of exogenous feeding. 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The free embryos were reared in circular tanks with approximately 30% of the bottom surface covered with either coarse gravel or sand. A group reared in tanks without additional substrate served as a control. Diurnal differences in activity patterns were observed. Substrate use by the free embryos revealed significant differences during the first 5 days post‐hatch, being higher in the gravel group than in the sand group. The results in size of the free embryos revealed significant differences, with the gravel group showing the lowest total length and wet mass until the onset of exogenous feeding – although dry mass and energy contents were highest. In contrast, length and wet mass during yolk sac absorption were highest in the control group, but energy content at onset of exogenous feeding was 14% lower compared to the gravel group. The onset of exogenous feeding in the gravel group had a 1‐day delay when compared to the two other treatments. On day 14, following the successful establishment of exogenous feed uptake, the specific growth rate in wet mass (SGR) for the gravel group (0.250 ± 0.088) exceeded those of the two other treatments (sand 0.132 ± 0.038 and control 0.095 ± 0.020) significantly (Dunn’s n = 10 and n = 5, P < 0.05), indicating a compensational growth pattern. Cortisol concentrations in free embryos did not differ significantly among the three groups, providing no evidence for differences in stress levels among the three treatments until onset of exogenous feeding. The results strongly suggest that gravel is the most beneficial substrate for free embryo development of American Atlantic Sturgeon, impacting the physiological performance of their early life phases and reducing predation.</p></abstract></profileDesc><revisionDesc><change when="2009-10">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/99C16BB2577773E9B88C56E8EB8A7C0AC46A025A/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 Publishing Ltd</publisherName><publisherLoc>Oxford, UK</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="10000"><doi origin="wiley">10.1111/jai.2009.25.issue-s2</doi><titleGroup><title type="specialIssueTitle">Proceedings of the Inaugural Meeting of the North American Chapter of the World Sturgeon Conservation Society, Ottawa, Canada, August 19‐21, 2008</title></titleGroup><numberingGroup><numbering type="journalVolume" number="25">25</numbering><numbering type="supplement">s2</numbering></numberingGroup><coverDate startDate="2009-10">October 2009</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="14" status="forIssue"><doi origin="wiley">10.1111/j.1439-0426.2009.01246.x</doi><idGroup><id type="unit" value="JAI1246"></id></idGroup><countGroup><count type="pageTotal" number="8"></count></countGroup><titleGroup><title type="tocHeading1">Original Articles</title></titleGroup><copyright>© 2009 Blackwell Verlag GmbH</copyright><eventGroup><event type="firstOnline" date="2009-06-22"></event><event type="publishedOnlineFinalForm" date="2009-09-01"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:FullText result:FullText" date="2010-03-15"></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="83">83</numbering><numbering type="pageLast" number="90">90</numbering></numberingGroup><correspondenceTo><b>Author’s address:</b> J. Gessner, Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 310, Berlin D 12587, Germany.
E‐mail: <email normalForm="sturgeon@igb-berlin.de">sturgeon@igb‐berlin.de</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:JAI.JAI1246.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received: August 9, 2008 Accepted: November 12, 2008</unparsedEditorialHistory><countGroup><count type="figureTotal" number="6"></count><count type="tableTotal" number="1"></count></countGroup><titleGroup><title type="main">Behavioural and physiological responses in early life phases of Atlantic sturgeon (<i>Acipenser oxyrinchus</i> Mitchill 1815) towards different substrates</title><title type="shortAuthors">J. Gessner et al.</title><title type="short">Larval response to substrates in <i>A. oxyrinchus</i></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>J.</givenNames><familyName>Gessner</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>C. M.</givenNames><familyName>Kamerichs</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1 #a3"><personName><givenNames>W.</givenNames><familyName>Kloas</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a1"><personName><givenNames>S.</givenNames><familyName>Wuertz</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="DE"><unparsedAffiliation>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="DE"><unparsedAffiliation>Institute for Animal Husbandry at the Christian‐Albrechts‐University, Kiel, Germany</unparsedAffiliation></affiliation><affiliation xml:id="a3" countryCode="DE"><unparsedAffiliation>Department for Endocrinology, Institute of Biology, Humboldt University, Berlin, Germany</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Summary</title><p>The physiological and behavioural responses of early life phases in American Atlantic sturgeon (<i>Acipenser oxyrinchus</i>) towards sand and gravel substrate were examined during the first 15 days post‐hatch. The free embryos were reared in circular tanks with approximately 30% of the bottom surface covered with either coarse gravel or sand. A group reared in tanks without additional substrate served as a control. Diurnal differences in activity patterns were observed. Substrate use by the free embryos revealed significant differences during the first 5 days post‐hatch, being higher in the gravel group than in the sand group. The results in size of the free embryos revealed significant differences, with the gravel group showing the lowest total length and wet mass until the onset of exogenous feeding – although dry mass and energy contents were highest. In contrast, length and wet mass during yolk sac absorption were highest in the control group, but energy content at onset of exogenous feeding was 14% lower compared to the gravel group. The onset of exogenous feeding in the gravel group had a 1‐day delay when compared to the two other treatments. On day 14, following the successful establishment of exogenous feed uptake, the specific growth rate in wet mass (SGR) for the gravel group (0.250 ± 0.088) exceeded those of the two other treatments (sand 0.132 ± 0.038 and control 0.095 ± 0.020) significantly (Dunn’s n = 10 and n = 5, P < 0.05), indicating a compensational growth pattern. Cortisol concentrations in free embryos did not differ significantly among the three groups, providing no evidence for differences in stress levels among the three treatments until onset of exogenous feeding. The results strongly suggest that gravel is the most beneficial substrate for free embryo development of American Atlantic Sturgeon, impacting the physiological performance of their early life phases and reducing predation.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Behavioural and physiological responses in early life phases of Atlantic sturgeon (Acipenser oxyrinchus Mitchill 1815) towards different substrates</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Larval response to substrates in A. oxyrinchus</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Behavioural and physiological responses in early life phases of Atlantic sturgeon (Acipenser oxyrinchus Mitchill 1815) towards different substrates</title></titleInfo><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Gessner</namePart><affiliation>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C. M.</namePart><namePart type="family">Kamerichs</namePart><affiliation>Institute for Animal Husbandry at the Christian‐Albrechts‐University, Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.</namePart><namePart type="family">Kloas</namePart><affiliation>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</affiliation><affiliation>Department for Endocrinology, Institute of Biology, Humboldt University, Berlin, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Wuertz</namePart><affiliation>Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2009-10</dateIssued><edition>Received: August 9, 2008 Accepted: November 12, 2008</edition><copyrightDate encoding="w3cdtf">2009</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">6</extent><extent unit="tables">1</extent></physicalDescription><abstract lang="en">The physiological and behavioural responses of early life phases in American Atlantic sturgeon (Acipenser oxyrinchus) towards sand and gravel substrate were examined during the first 15 days post‐hatch. The free embryos were reared in circular tanks with approximately 30% of the bottom surface covered with either coarse gravel or sand. A group reared in tanks without additional substrate served as a control. Diurnal differences in activity patterns were observed. Substrate use by the free embryos revealed significant differences during the first 5 days post‐hatch, being higher in the gravel group than in the sand group. The results in size of the free embryos revealed significant differences, with the gravel group showing the lowest total length and wet mass until the onset of exogenous feeding – although dry mass and energy contents were highest. In contrast, length and wet mass during yolk sac absorption were highest in the control group, but energy content at onset of exogenous feeding was 14% lower compared to the gravel group. The onset of exogenous feeding in the gravel group had a 1‐day delay when compared to the two other treatments. On day 14, following the successful establishment of exogenous feed uptake, the specific growth rate in wet mass (SGR) for the gravel group (0.250 ± 0.088) exceeded those of the two other treatments (sand 0.132 ± 0.038 and control 0.095 ± 0.020) significantly (Dunn’s n = 10 and n = 5, P < 0.05), indicating a compensational growth pattern. Cortisol concentrations in free embryos did not differ significantly among the three groups, providing no evidence for differences in stress levels among the three treatments until onset of exogenous feeding. The results strongly suggest that gravel is the most beneficial substrate for free embryo development of American Atlantic Sturgeon, impacting the physiological performance of their early life phases and reducing predation.</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>2009</date><detail type="title"><title>Proceedings of the Inaugural Meeting of the North American Chapter of the World Sturgeon Conservation Society, Ottawa, Canada, August 19‐21, 2008</title></detail><detail type="volume"><caption>vol.</caption><number>25</number></detail><detail type="supplement"><caption>Suppl. no.</caption><number>s2</number></detail><extent unit="pages"><start>83</start><end>90</end><total>8</total></extent></part></relatedItem><identifier type="istex">99C16BB2577773E9B88C56E8EB8A7C0AC46A025A</identifier><identifier type="DOI">10.1111/j.1439-0426.2009.01246.x</identifier><identifier type="ArticleID">JAI1246</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2009 Blackwell Verlag GmbH</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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