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The effect of temperature on embryonic and yolk‐sac larval development in the burbot Lota lota

Identifieur interne : 000A43 ( Istex/Corpus ); précédent : 000A42; suivant : 000A44

The effect of temperature on embryonic and yolk‐sac larval development in the burbot Lota lota

Auteurs : F. Lahnsteiner ; M. Kletzl ; T. Weismann

Source :

RBID : ISTEX:86E74718E0C93CCD529E60B2120E3270F5DD4710

English descriptors

Abstract

The present study investigated the effect of various temperature regimes on embryonic and yolk‐sac larval development of the burbot Lota lota. At constant temperature regimes a high percentage of ready‐to‐hatch embryos, hatched larvae and normally shaped larvae was observed at the lowest temperature (2° C), which significantly decreased with increasing temperatures (4 and 6° C). No larvae hatched at 9° C. The stream temperature regime had no effect on the percentage of ready‐to‐hatch embryos, but significantly decreased the percentage of hatched larvae and of normally shaped larvae. The lake temperature regime did not affect the viability variables. Also an abrupt temperature increase from 2 to 4° C after 8 days and from 2 to 9° C after 48 days had no effect on the evaluated viability variables. For yolk‐sac larvae no temperature related mortalities or abnormalities were observed between 2 and 9° C.

Url:
DOI: 10.1111/j.1095-8649.2012.03344.x

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ISTEX:86E74718E0C93CCD529E60B2120E3270F5DD4710

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<languageTerm type="code" authority="iso639-2b">eng</languageTerm>
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<extent unit="figures">3</extent>
<extent unit="tables">3</extent>
<extent unit="references">22</extent>
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<abstract lang="en">The present study investigated the effect of various temperature regimes on embryonic and yolk‐sac larval development of the burbot Lota lota. At constant temperature regimes a high percentage of ready‐to‐hatch embryos, hatched larvae and normally shaped larvae was observed at the lowest temperature (2° C), which significantly decreased with increasing temperatures (4 and 6° C). No larvae hatched at 9° C. The stream temperature regime had no effect on the percentage of ready‐to‐hatch embryos, but significantly decreased the percentage of hatched larvae and of normally shaped larvae. The lake temperature regime did not affect the viability variables. Also an abrupt temperature increase from 2 to 4° C after 8 days and from 2 to 9° C after 48 days had no effect on the evaluated viability variables. For yolk‐sac larvae no temperature related mortalities or abnormalities were observed between 2 and 9° C.</abstract>
<subject lang="en">
<genre>keywords</genre>
<topic>fish</topic>
<topic>hatching</topic>
<topic>malformation</topic>
<topic>thermal stress</topic>
<topic>yolk sac</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="volume">
<caption>vol.</caption>
<number>81</number>
</detail>
<detail type="issue">
<caption>no.</caption>
<number>3</number>
</detail>
<extent unit="pages">
<start>977</start>
<end>986</end>
<total>10</total>
</extent>
</part>
</relatedItem>
<identifier type="istex">86E74718E0C93CCD529E60B2120E3270F5DD4710</identifier>
<identifier type="DOI">10.1111/j.1095-8649.2012.03344.x</identifier>
<identifier type="ArticleID">JFB3344</identifier>
<accessCondition type="use and reproduction" contentType="copyright">© 2012 The Authors. Journal of Fish Biology © 2012 The Fisheries Society of the British Isles</accessCondition>
<recordInfo>
<recordContentSource>WILEY</recordContentSource>
<recordOrigin>Blackwell Publishing Ltd</recordOrigin>
</recordInfo>
</mods>
</metadata>
<serie></serie>
</istex>
</record>

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