Ghrelin is involved in voluntary anorexia in Atlantic salmon raised at elevated sea temperatures

Highlights ► Endocrine appetite and dietary lipid effects were examine in salmon at high temperature. ► Salmon at 19 °C reduced feed intake, growth and feed utilization compared to fish at 14 °C. ► Due to high maintenance cost salmon at 19 °C depleted their endogenous body reserves. ► Circulating gh...

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Veröffentlicht in:	General and comparative endocrinology 2012-01, Vol.175 (1), p.118-134
Hauptverfasser:	Hevrøy, E.M, Waagbø, R, Torstensen, B.E, Takle, H, Stubhaug, I, Jørgensen, S.M, Torgersen, T, Tvenning, L, Susort, S, Breck, O, Hansen, T
Format:	Artikel
Sprache:	eng
Schlagworte:	adult development adults Animals anorexia Anorexia - physiopathology Appetite Regulation - physiology Atlantic salmon climate change diet Eating - physiology Endocrinology & Metabolism energy Energy Metabolism - physiology farmed fish feed conversion feed intake GH-IGF system Ghrelin Ghrelin - physiology ghrelin receptors Global warming homeostasis Hot Temperature hypothalamus Lipid catabolism Marine messenger RNA neuropeptide Y Oceans and Seas Phenotype Salmo salar Salmo salar - physiology salmon stomach Temperature Thermal exposure transcription factors
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Zusammenfassung:	Highlights ► Endocrine appetite and dietary lipid effects were examine in salmon at high temperature. ► Salmon at 19 °C reduced feed intake, growth and feed utilization compared to fish at 14 °C. ► Due to high maintenance cost salmon at 19 °C depleted their endogenous body reserves. ► Circulating ghrelin, ghrelin-1 and GHSR1a-LR mRNA levels were reduced in salmon at 19 °C. ► We suggest ghrelin are related to suppressed feed intake and voluntary anorexia at 19 °C.
ISSN:	0016-6480 1095-6840
DOI:	10.1016/j.ygcen.2011.10.007