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Salinity and temperature effects on the lipid composition of mullet sea fry (Mugil cephalus, Linne, 1758) Khériji, S.; Cafsi, M.E.; Masmoudi, W.; Castell, J.D.; Romdhane, M.S. (2003). Salinity and temperature effects on the lipid composition of mullet sea fry (Mugil cephalus, Linne, 1758). Aquacult. Int. 11(6): 571-582. https://dx.doi.org/10.1023/b:aqui.0000013321.93743.6d In: Aquaculture International. Springer: London. ISSN 0967-6120; e-ISSN 1573-143X

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Beschikbaar in	Auteurs
VLIZ: Non-open access 351019 [ aanvragen ]

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Trefwoorden

Acids > Organic compounds > Organic acids > Fatty acids Aquaculture Composition Developmental stages > Larvae > Fish larvae > Fry Properties > Chemical properties > Salinity Properties > Physical properties > Thermodynamic properties > Temperature Tunisia Mugil cephalus Linnaeus, 1758 [WoRMS] Tunisia [Marine Regions] Marien/Kust

Author keywords

aquaculture; composition; fatty acids; fry; Mugil cephalus; salinity;temperature

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Auteurs		Top
Khériji, S. Cafsi, M.E. Masmoudi, W.	Castell, J.D. Romdhane, M.S., correspondent

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Abstract

A large part of the extensive aquaculture in Tunisia was based on the transfer of mullet fry from the marine coastal areas to the continental fresh water lakes, the aim of this work is the monitoring of the changes made in the lipid composition of Mugil cephalus fry according to salinity and temperature acclimation. Fish acclimated to 14 °C and 0.5 psu salinity, contained 55% less total fatty acid than those acclimated to the seawater at the same temperature. Low salinity induces an increase in the percentage of some polyunsaturated fatty acid such as the 22:5 (n-3), the 22:6 (n-3) and the 20:4 (n-6), as a result of change in the level of triacylglycerol content or the activation in the synthesis of those fatty acids. The transition of the acclimation temperature from 26 to 14 °C in seawater is followed by a 215% increase in the amount of total fatty acids in the fourth week of acclimation. The total fatty acid levels of all fish at 1 week were higher than most values at 4 weeks. There was an increase of polyunsaturated fatty acids percentages due to the decrease of the temperature at the low salinity.

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