Effect of food shortage and temperature on age 0+ salmonids: A contribution to predict the effects of climate change

Elorri Arevalo (1) , Stéphane Panserat (2) , Iban Seiliez (2) , A. Larrañaga (3) , Agnes Bardonnet (1)

1 ECOBIOP - Ecologie Comportementale et Biologie des Populations de Poissons
2 NuMéA - Nutrition, Métabolisme, Aquaculture
3 Laboratory of Stream Ecology

Brown trout Salmo trutta alevins were maintained at 8 and 11∘ C at three conditions over a 9 day period from yolk sac exhaustion: fed ad libitum, starved or fed ad libitum after starvation. Whole-body gene expressions for proteins involved in energymetabolism and the two primary proteolytic pathways were assessed. This study is the first to show an over-expression of proteasome and autophagy-related genes in young stages of salmonids, particularly at 11∘ C.

Mots clés: fry; metabolism; global change; sea trout; starvation; prey

Mots clés: jeune stade; changement climatique; jeûne; température; salmo trutta

Domaines: Milieux et Changements globaux; Biologie animale

Elorri Arevalo, Stéphane Panserat, Iban Seiliez, A. Larrañaga, Agnes Bardonnet. Effect of food shortage and temperature on age 0+ salmonids: A contribution to predict the effects of climate change. Journal of Fish Biology, 2018, 11 p. ⟨10.1111/jfb.13533⟩. ⟨hal-01705840⟩