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Titolo:
Demand-feeding rhythm in rainbow trout and European catfish - Synchronisation by photoperiod and food availability
Autore:
Bolliet, V; Aranda, A; Boujard, T;
Indirizzi:
INRA, Stn Hydrobiol, IFREMER, Unite Mixte,Lab Nutr Poissons, F-64310 St Pec Sur Nivelle, France INRA St Pec Sur Nivelle France F-64310 -64310 St Pec Sur Nivelle, France Univ Murcia, Fac Biol, Dept Physiol & Pharmacol, E-30100 Murcia, Spain Univ Murcia Murcia Spain E-30100 siol & Pharmacol, E-30100 Murcia, Spain
Titolo Testata:
PHYSIOLOGY & BEHAVIOR
fascicolo: 4, volume: 73, anno: 2001,
pagine: 625 - 633
SICI:
0031-9384(200107)73:4<625:DRIRTA>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
CIRCADIAN-RHYTHMS; SEA BASS; ONCORHYNCHUS-MYKISS; LOCOMOTOR-ACTIVITY; BEHAVIOR; PATTERN; GOLDFISH; TIME;
Keywords:
feeding behaviour; demand-feeding; circadian rhythm; catfish; rainbow trout; photoperiod; food availability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Bolliet, V INRA, Stn Hydrobiol, IFREMER, Unite Mixte,Lab Nutr Poissons, BP3, F-64310St Pec Sur Nivelle, France INRA BP 3 St Pec Sur Nivelle France F-64310 ur Nivelle, France
Citazione:
V. Bolliet et al., "Demand-feeding rhythm in rainbow trout and European catfish - Synchronisation by photoperiod and food availability", PHYSL BEHAV, 73(4), 2001, pp. 625-633

Abstract

The effect of light-dark (LD) cycle and food availability was tested on the demand-feeding rhythm of single and groups of rainbow trout and European catfish. Under LD and free food access, most trout and catfish displayed, respectively, a diurnal and a nocturnal pattern of demand-feeding activity, whereas a few Fish or groups of fish switched from diurnalism to nocturnalism or vice versa. In both species held under constant lighting conditions and a restricted feeding (R-F) cycle (PF 20:4), the demand-feeding rhythm rapidly synchronised to food availability. The demand-feeding rhythm was under endogenous control and, in rainbow trout, periodogram analysis suggested the existence of two oscillators, one synchronised by photoperiod (LEO) andthe other by food (FEO). When submitted to both LD and R-F cycles, LD was,at least in the rainbow trout, the dominant zeitgeber synchronising the demand-feeding rhythm. In catfish, food availability rapidly synchronised demand-feeding rhythm. Finally, in both species, the synchronisation of singlefish to LD or feed availability appeared slower than that of groups of fish, supporting the idea that social organisation affects the cireadian activity in fish. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/07/20 alle ore 00:57:20