First feeding of burbot, Lota lota (Gadidae, Teleostei) larvae under different temperature and light conditions
Identifieur interne : 000A16 ( Main/Exploration ); précédent : 000A15; suivant : 000A17First feeding of burbot, Lota lota (Gadidae, Teleostei) larvae under different temperature and light conditions
Auteurs : Alireza Shiri Harzevili [Belgique] ; Inge Dooremont [Belgique] ; Inne Vught [Belgique] ; Johan Auwerx [Belgique] ; Paul Quataert [Belgique] ; Daniel De Charleroy [Belgique]Source :
- Aquaculture Research [ 1355-557X ] ; 2004-01-03.
English descriptors
- KwdEn :
Abstract
The burbot (Lota lota) is the only fresh water member of the cod family, Gadidae, and is adapted to cold waters. The effects of temperature and light on the growth and survival of burbot larvae were investigated under hatchery conditions. Three temperature regimes (12, 16 and 20°C) were applied under continuous light and darkness during the experiment. Rotifer, Brachionus calyciflorus (L.) were fed to the larvae in the first 10 days and the diet was then replaced with Artemia nauplii. At the end of the feeding stage with rotifer, growth in terms of the total length and wet weight were larger at higher temperatures under continuous light. At day 10, survival rates of the fish held at 12°C under continuous light and darkness regime were higher than those held at 16°C and 20°C kept under the same conditions. From day 10 onwards, larval growth improved remarkably after changing the live food from rotifer to Artemia in all treatments. At the end of the study, the highest survival rate was recorded among the larvae held at 12°C exposed to continuous light. Under light condition, the temperature of 20°C did not result in an improved larval growth compared with 16°C. This may indicate that high temperature and continuous light are not beneficial for larval growth and survival when they reach older stage of development. The results indicate a significant interaction for the combination of temperature, light and time with respect to survival and wet weight, making unambiguous interpretation of the main effects difficult.
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DOI: 10.1111/j.1365-2109.2004.00982.x
Affiliations:
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and is adapted to cold waters. The effects of temperature and light on the growth and survival of burbot larvae were investigated under hatchery conditions. Three temperature regimes (12, 16 and 20°C) were applied under continuous light and darkness during the experiment. Rotifer, Brachionus calyciflorus (L.) were fed to the larvae in the first 10 days and the diet was then replaced with Artemia nauplii. At the end of the feeding stage with rotifer, growth in terms of the total length and wet weight were larger at higher temperatures under continuous light. At day 10, survival rates of the fish held at 12°C under continuous light and darkness regime were higher than those held at 16°C and 20°C kept under the same conditions. From day 10 onwards, larval growth improved remarkably after changing the live food from rotifer to Artemia in all treatments. At the end of the study, the highest survival rate was recorded among the larvae held at 12°C exposed to continuous light. Under light condition, the temperature of 20°C did not result in an improved larval growth compared with 16°C. This may indicate that high temperature and continuous light are not beneficial for larval growth and survival when they reach older stage of development. The results indicate a significant interaction for the combination of temperature, light and time with respect to survival and wet weight, making unambiguous interpretation of the main effects difficult.</div></front></TEI><affiliations><list><country><li>Belgique</li></country></list><tree><country name="Belgique"><noRegion><name sortKey="Shiri Harzevili, Alireza" sort="Shiri Harzevili, Alireza" uniqKey="Shiri Harzevili A" first="Alireza" last="Shiri Harzevili">Alireza Shiri Harzevili</name></noRegion><name sortKey="Auwerx, Johan" sort="Auwerx, Johan" uniqKey="Auwerx J" first="Johan" last="Auwerx">Johan Auwerx</name><name sortKey="De Charleroy, Daniel" sort="De Charleroy, Daniel" uniqKey="De Charleroy D" first="Daniel" last="De Charleroy">Daniel De Charleroy</name><name sortKey="Dooremont, Inge" sort="Dooremont, Inge" uniqKey="Dooremont I" first="Inge" last="Dooremont">Inge Dooremont</name><name sortKey="Quataert, Paul" sort="Quataert, Paul" uniqKey="Quataert P" first="Paul" last="Quataert">Paul Quataert</name><name sortKey="Vught, Inne" sort="Vught, Inne" uniqKey="Vught I" first="Inne" last="Vught">Inne Vught</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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