%0 Journal Article %9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES %A Boujard, T. %A Moreau, Yann %A Luquet, Pierre %T Entrainment of the circadian rythm of food demand by infradian cycles of light-dark alternation in Hoplosternum littorale (Teleostei) %D 1991 %L fdi:40932 %G ENG %J Aquatic Living Resources %@ 0990-7740 %K POISSON ; ETHOLOGIE ; ALIMENTATION ANIMALE ; RYTHME NYCTHEMERAL %K SILURIFORME ; RYTHME CIRCADIEN %N 4 %P 221-225 %R 10.1051/alr:1991023 %U https://www.documentation.ird.fr/hor/fdi:40932 %> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_35-36/40932.pdf %V 4 %W Horizon (IRD) %X #Hoplosternum littorale$ (Hancock, 1828) shows a marked circadium rhythm of food demand. Feeding activity is mainly nocturnal, with two peaks, and is synchronized whith the diel light cycle. We tested the effect of infradian (period > 28h) light dark cycles on this rhythm in fish with demand-feeders : fish subjected to a 13.5 L/22.5 D light dark cycle for 8 days and a 25.5 L/10.5 D cycle for a further 8 days showed a strictly nocturnal feeding activity a response that only passively reflected the cycle alternation of light and dark. (Résumé d'auteur) %$ 036EAUCON03 ; 080ZOOGEN04