A kinematic examination of wild sockeye salmon jumping up natural waterfalls
Identifieur interne : 000E14 ( Istex/Corpus ); précédent : 000E13; suivant : 000E15A kinematic examination of wild sockeye salmon jumping up natural waterfalls
Auteurs : D. V. Lauritzen ; F. Hertel ; M. S. GordonSource :
- Journal of Fish Biology [ 0022-1112 ] ; 2005-10.
English descriptors
- KwdEn :
Abstract
Wild Alaskan sockeye salmon Oncorhynchus nerka jumping natural waterfalls were observed and photographed to obtain insight into factors important to the fish in dealing with obstacles during their upstream spawning migrations. The fish showed preferences for specific sets of conditions related to heights of waterfalls and depths in pools below waterfalls. Successful jumps appeared to result from running starts, not standing fast starts. The proportion of observed jumps that were successful was low (10% at Brooks Falls, Katmai National Park, Alaska, U.S.A.). Successful jumping behaviour was modelled mathematically and predictions were compared to measured kinematic variables of successful and unsuccessful jumping obtained from analyses of digital video photographs. There were statistically significant differences between the two data sets, but the model identified takeoff velocities and angles, and distances between takeoffs and successful landings as important variables.
Url:
DOI: 10.1111/j.0022-1112.2005.00799.x
Links to Exploration step
ISTEX:9B737823DE0688F14969C1A393672C4FFD214BBCLe document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title><author><name sortKey="Lauritzen, D V" sort="Lauritzen, D V" uniqKey="Lauritzen D" first="D. V." last="Lauritzen">D. V. Lauritzen</name><affiliation><mods:affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: deanl@lifesci.ucla.edu</mods:affiliation></affiliation></author><author><name sortKey="Hertel, F" sort="Hertel, F" uniqKey="Hertel F" first="F." last="Hertel">F. Hertel</name><affiliation><mods:affiliation>Department of Biology, California State University, Northridge, CA 91330, U.S.A.</mods:affiliation></affiliation></author><author><name sortKey="Gordon, M S" sort="Gordon, M S" uniqKey="Gordon M" first="M. S." last="Gordon">M. S. Gordon</name><affiliation><mods:affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:9B737823DE0688F14969C1A393672C4FFD214BBC</idno><date when="2005" year="2005">2005</date><idno type="doi">10.1111/j.0022-1112.2005.00799.x</idno><idno type="url">https://api.istex.fr/document/9B737823DE0688F14969C1A393672C4FFD214BBC/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000E14</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000E14</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title><author><name sortKey="Lauritzen, D V" sort="Lauritzen, D V" uniqKey="Lauritzen D" first="D. V." last="Lauritzen">D. V. Lauritzen</name><affiliation><mods:affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: deanl@lifesci.ucla.edu</mods:affiliation></affiliation></author><author><name sortKey="Hertel, F" sort="Hertel, F" uniqKey="Hertel F" first="F." last="Hertel">F. Hertel</name><affiliation><mods:affiliation>Department of Biology, California State University, Northridge, CA 91330, U.S.A.</mods:affiliation></affiliation></author><author><name sortKey="Gordon, M S" sort="Gordon, M S" uniqKey="Gordon M" first="M. S." last="Gordon">M. S. Gordon</name><affiliation><mods:affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Fish Biology</title><idno type="ISSN">0022-1112</idno><idno type="eISSN">1095-8649</idno><imprint><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK; Malden, USA</pubPlace><date type="published" when="2005-10">2005-10</date><biblScope unit="volume">67</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="1010">1010</biblScope><biblScope unit="page" to="1020">1020</biblScope></imprint><idno type="ISSN">0022-1112</idno></series><idno type="istex">9B737823DE0688F14969C1A393672C4FFD214BBC</idno><idno type="DOI">10.1111/j.0022-1112.2005.00799.x</idno><idno type="ArticleID">JFB799</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-1112</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Salmonidae</term><term>behaviour</term><term>fishway</term><term>jumping</term><term>kinematics</term><term>waterfall</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Wild Alaskan sockeye salmon Oncorhynchus nerka jumping natural waterfalls were observed and photographed to obtain insight into factors important to the fish in dealing with obstacles during their upstream spawning migrations. The fish showed preferences for specific sets of conditions related to heights of waterfalls and depths in pools below waterfalls. Successful jumps appeared to result from running starts, not standing fast starts. The proportion of observed jumps that were successful was low (10% at Brooks Falls, Katmai National Park, Alaska, U.S.A.). Successful jumping behaviour was modelled mathematically and predictions were compared to measured kinematic variables of successful and unsuccessful jumping obtained from analyses of digital video photographs. There were statistically significant differences between the two data sets, but the model identified takeoff velocities and angles, and distances between takeoffs and successful landings as important variables.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>D. V. Lauritzen</name><affiliations><json:string>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</json:string><json:string>E-mail: deanl@lifesci.ucla.edu</json:string></affiliations></json:item><json:item><name>F. Hertel</name><affiliations><json:string>Department of Biology, California State University, Northridge, CA 91330, U.S.A.</json:string></affiliations></json:item><json:item><name>M. S. Gordon</name><affiliations><json:string>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>behaviour</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>fishway</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>jumping</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>kinematics</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Salmonidae</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>waterfall</value></json:item></subject><articleId><json:string>JFB799</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Wild Alaskan sockeye salmon Oncorhynchus nerka jumping natural waterfalls were observed and photographed to obtain insight into factors important to the fish in dealing with obstacles during their upstream spawning migrations. The fish showed preferences for specific sets of conditions related to heights of waterfalls and depths in pools below waterfalls. Successful jumps appeared to result from running starts, not standing fast starts. The proportion of observed jumps that were successful was low (10% at Brooks Falls, Katmai National Park, Alaska, U.S.A.). Successful jumping behaviour was modelled mathematically and predictions were compared to measured kinematic variables of successful and unsuccessful jumping obtained from analyses of digital video photographs. There were statistically significant differences between the two data sets, but the model identified takeoff velocities and angles, and distances between takeoffs and successful landings as important variables.</abstract><qualityIndicators><score>7.132</score><pdfVersion>1.4</pdfVersion><pdfPageSize>488 x 703 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>985</abstractCharCount><pdfWordCount>5290</pdfWordCount><pdfCharCount>29956</pdfCharCount><pdfPageCount>11</pdfPageCount><abstractWordCount>136</abstractWordCount></qualityIndicators><title>A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title><genre><json:string>article</json:string></genre><host><volume>67</volume><publisherId><json:string>JFB</json:string></publisherId><pages><total>11</total><last>1020</last><first>1010</first></pages><issn><json:string>0022-1112</json:string></issn><issue>4</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><eissn><json:string>1095-8649</json:string></eissn><title>Journal of Fish Biology</title><doi><json:string>10.1111/(ISSN)1095-8649</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.0022-1112.2005.00799.x</json:string></doi><id>9B737823DE0688F14969C1A393672C4FFD214BBC</id><score>0.02723044</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/9B737823DE0688F14969C1A393672C4FFD214BBC/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/9B737823DE0688F14969C1A393672C4FFD214BBC/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/9B737823DE0688F14969C1A393672C4FFD214BBC/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK; Malden, USA</pubPlace><availability><p>WILEY</p></availability><date>2005</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title><author xml:id="author-1"><persName><forename type="first">D. V.</forename><surname>Lauritzen</surname></persName><email>deanl@lifesci.ucla.edu</email><affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</affiliation></author><author xml:id="author-2"><persName><forename type="first">F.</forename><surname>Hertel</surname></persName><affiliation>Department of Biology, California State University, Northridge, CA 91330, U.S.A.</affiliation></author><author xml:id="author-3"><persName><forename type="first">M. S.</forename><surname>Gordon</surname></persName><affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</affiliation></author></analytic><monogr><title level="j">Journal of Fish Biology</title><idno type="pISSN">0022-1112</idno><idno type="eISSN">1095-8649</idno><idno type="DOI">10.1111/(ISSN)1095-8649</idno><imprint><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK; Malden, USA</pubPlace><date type="published" when="2005-10"></date><biblScope unit="volume">67</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="1010">1010</biblScope><biblScope unit="page" to="1020">1020</biblScope></imprint></monogr><idno type="istex">9B737823DE0688F14969C1A393672C4FFD214BBC</idno><idno type="DOI">10.1111/j.0022-1112.2005.00799.x</idno><idno type="ArticleID">JFB799</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>2005</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Wild Alaskan sockeye salmon Oncorhynchus nerka jumping natural waterfalls were observed and photographed to obtain insight into factors important to the fish in dealing with obstacles during their upstream spawning migrations. The fish showed preferences for specific sets of conditions related to heights of waterfalls and depths in pools below waterfalls. Successful jumps appeared to result from running starts, not standing fast starts. The proportion of observed jumps that were successful was low (10% at Brooks Falls, Katmai National Park, Alaska, U.S.A.). Successful jumping behaviour was modelled mathematically and predictions were compared to measured kinematic variables of successful and unsuccessful jumping obtained from analyses of digital video photographs. There were statistically significant differences between the two data sets, but the model identified takeoff velocities and angles, and distances between takeoffs and successful landings as important variables.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>keywords</head><item><term>behaviour</term></item><item><term>fishway</term></item><item><term>jumping</term></item><item><term>kinematics</term></item><item><term>Salmonidae</term></item><item><term>waterfall</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="2005-10">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/9B737823DE0688F14969C1A393672C4FFD214BBC/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 Science Ltd</publisherName><publisherLoc>Oxford, UK; Malden, USA</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1095-8649</doi><issn type="print">0022-1112</issn><issn type="electronic">1095-8649</issn><idGroup><id type="product" value="JFB"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF FISH BIOLOGY">Journal of Fish Biology</title></titleGroup></publicationMeta><publicationMeta level="part" position="10004"><doi origin="wiley">10.1111/jfb.2005.67.issue-4</doi><numberingGroup><numbering type="journalVolume" number="67">67</numbering><numbering type="journalIssue" number="4">4</numbering></numberingGroup><coverDate startDate="2005-10">October 2005</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="0101000" status="forIssue"><doi origin="wiley">10.1111/j.0022-1112.2005.00799.x</doi><idGroup><id type="unit" value="JFB799"></id></idGroup><countGroup><count type="pageTotal" number="11"></count></countGroup><titleGroup><title type="tocHeading1">REGULAR PAPERS</title></titleGroup><eventGroup><event type="firstOnline" date="2005-10-06"></event><event type="publishedOnlineFinalForm" date="2005-10-06"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:Header result:Header" date="2010-02-28"></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:4.1.7 mode:FullText,remove_FC" date="2014-10-30"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="1010">1010</numbering><numbering type="pageLast" number="1020">1020</numbering></numberingGroup><correspondenceTo> †Tel.: +1 310 825 8842; fax: +1 310 206 3987; email: <email>deanl@lifesci.ucla.edu</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:JFB.JFB799.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>(Received 11 February 2004, Accepted 14 April 2005)</unparsedEditorialHistory><countGroup><count type="figureTotal" number="1"></count><count type="tableTotal" number="2"></count><count type="formulaTotal" number="6"></count><count type="referenceTotal" number="31"></count><count type="wordTotal" number="0"></count><count type="linksPubMed" number="0"></count><count type="linksCrossRef" number="0"></count></countGroup><titleGroup><title type="main">A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title><title type="shortAuthors"><sc>d. v. lauritzen</sc><i><sc>et al.</sc></i></title><title type="short"><sc>jumping of salmon</sc></title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1" corresponding="yes"><personName><givenNames>D. V.</givenNames><familyName>Lauritzen</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a2"><personName><givenNames>F.</givenNames><familyName>Hertel</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>M. S.</givenNames><familyName>Gordon</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="US"><unparsedAffiliation><i>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</i></unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="US"><unparsedAffiliation><i>Department of Biology, California State University, Northridge, CA 91330, U.S.A</i>.</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">behaviour</keyword><keyword xml:id="k2">fishway</keyword><keyword xml:id="k3">jumping</keyword><keyword xml:id="k4">kinematics</keyword><keyword xml:id="k5">Salmonidae</keyword><keyword xml:id="k6">waterfall</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><p>Wild Alaskan sockeye salmon <i>Oncorhynchus nerka</i> jumping natural waterfalls were observed and photographed to obtain insight into factors important to the fish in dealing with obstacles during their upstream spawning migrations. The fish showed preferences for specific sets of conditions related to heights of waterfalls and depths in pools below waterfalls. Successful jumps appeared to result from running starts, not standing fast starts. The proportion of observed jumps that were successful was low (10% at Brooks Falls, Katmai National Park, Alaska, U.S.A.). Successful jumping behaviour was modelled mathematically and predictions were compared to measured kinematic variables of successful and unsuccessful jumping obtained from analyses of digital video photographs. There were statistically significant differences between the two data sets, but the model identified takeoff velocities and angles, and distances between takeoffs and successful landings as important variables.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>jumping of salmon</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>A kinematic examination of wild sockeye salmon jumping up natural waterfalls</title></titleInfo><name type="personal"><namePart type="given">D. V.</namePart><namePart type="family">Lauritzen</namePart><affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</affiliation><affiliation>E-mail: deanl@lifesci.ucla.edu</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">F.</namePart><namePart type="family">Hertel</namePart><affiliation>Department of Biology, California State University, Northridge, CA 91330, U.S.A.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M. S.</namePart><namePart type="family">Gordon</namePart><affiliation>Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, U.S.A. and</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Science Ltd</publisher><place><placeTerm type="text">Oxford, UK; Malden, USA</placeTerm></place><dateIssued encoding="w3cdtf">2005-10</dateIssued><edition>(Received 11 February 2004, Accepted 14 April 2005)</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">1</extent><extent unit="tables">2</extent><extent unit="formulas">6</extent><extent unit="references">31</extent></physicalDescription><abstract lang="en">Wild Alaskan sockeye salmon Oncorhynchus nerka jumping natural waterfalls were observed and photographed to obtain insight into factors important to the fish in dealing with obstacles during their upstream spawning migrations. The fish showed preferences for specific sets of conditions related to heights of waterfalls and depths in pools below waterfalls. Successful jumps appeared to result from running starts, not standing fast starts. The proportion of observed jumps that were successful was low (10% at Brooks Falls, Katmai National Park, Alaska, U.S.A.). Successful jumping behaviour was modelled mathematically and predictions were compared to measured kinematic variables of successful and unsuccessful jumping obtained from analyses of digital video photographs. There were statistically significant differences between the two data sets, but the model identified takeoff velocities and angles, and distances between takeoffs and successful landings as important variables.</abstract><subject lang="en"><genre>keywords</genre><topic>behaviour</topic><topic>fishway</topic><topic>jumping</topic><topic>kinematics</topic><topic>Salmonidae</topic><topic>waterfall</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>2005</date><detail type="volume"><caption>vol.</caption><number>67</number></detail><detail type="issue"><caption>no.</caption><number>4</number></detail><extent unit="pages"><start>1010</start><end>1020</end><total>11</total></extent></part></relatedItem><identifier type="istex">9B737823DE0688F14969C1A393672C4FFD214BBC</identifier><identifier type="DOI">10.1111/j.0022-1112.2005.00799.x</identifier><identifier type="ArticleID">JFB799</identifier><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Science Ltd</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Eau/explor/EsturgeonV1/Data/Istex/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000E14 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Corpus/biblio.hfd -nk 000E14 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Eau
|area= EsturgeonV1
|flux= Istex
|étape= Corpus
|type= RBID
|clé= ISTEX:9B737823DE0688F14969C1A393672C4FFD214BBC
|texte= A kinematic examination of wild sockeye salmon jumping up natural waterfalls
}}
| This area was generated with Dilib version V0.6.27. |  |