title: Differences in fat accumulation between immature male and female Atlantic salmon Salmo salar after dietary administration of tetradecylthioacetic acid.
abstract: This study provoked sex-specific differences in fat metabolism in Atlantic salmon Salmo salar, by dietary administration of tetradecylthioacetic acid (TTA) during their first spring and winter in the sea. The effects of TTA were evaluated in June of the first spring and May of the second spring in the sea, by analysing white muscle-fat content. Muscle fat in males and females differed significantly as a result of TTA in their diet and diet interacted with the sex of the fish. The fat content during the first spring after dietary TTA was lowered by a greater amount in females than in males, 3·1-4·3%, respectively (P < 0·05). In contrast, during the second spring, fat content was lowered by a greater amount in males than in females, 15·8-16·7%, respectively (P < 0·01). Condition factor followed a similar pattern to the muscle fat. The results indicate that the difference in male and female fat accumulation dynamics is related to sex-specific reproduction biology of S. salar. In addition, the findings show that it is important to consider the sex of the fish and the season of the year when studying fat dynamics and reproductive biology of S. salar.
authors: Nofima, NO-1432 Ås, Akershus, Norway.|Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, NO-1432 Ås, Akershus, Norway.
authors: J-E
authors: JE
authors: Dessen
authors: Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, NO-1432 Ås, Akershus, Norway . regin@fiskaaling.fo.|Fiskaaling, Aquacultural Research Station of the Faroes, FO-430, Hvalvík, Faroe Islands. regin@fiskaaling.fo.
authors: R
authors: R
authors: Arge
authors: Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, NO-1432 Ås, Akershus, Norway.
authors: M S
authors: MS
authors: Thomassen
authors: Nofima, NO-1432 Ås, Akershus, Norway.|Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, NO-1432 Ås, Akershus, Norway.
authors: K-A
authors: KA
authors: Rørvik
mesh_terms: D000818:Animals; D004032:Diet; D005260:Female; D050356:Lipid Metabolism / Q000187:drug effects*; D008297:Male; D009132:Muscles / Q000378:metabolism*; D020317:Salmo salar / Q000378:metabolism*; D012621:Seasons; D012727:Sex Characteristics; D013440:Sulfides / Q000494:pharmacology*
chemical_list: D013440:Sulfides; C062078:1-(carboxymethylthio)tetradecane
keywords: S1; condition factor; reproduction biology; smolt