%0 Conference Proceedings
%9 ACTI : Communications avec actes dans un congrès international
%A Fréon, Pierre
%A Gerlotto, François
%A Soria, Marc
%T Variability of Harengula spp. school reactions to boats or predators in shallow water
%S Fish behaviour in relation to fishing operations
%D 1993
%L fdi:38977
%G ENG
%K POISSON MARIN ; ESPECE PELAGIQUE ; ETHOLOGIE ; SCHOOLING ; EXPERIMENTATION ; ECHOINTEGRATION ; ANALYSE DE DONNEES
%K STIMULUS ARTIFICIEL
%K MARTINIQUE ; MER DES ANTILLES
%P 30-35
%U https://www.documentation.ird.fr/hor/fdi:38977
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/b_fdi_33-34/38977.pdf
%V 196
%W Horizon (IRD)
%X The internal structure and behaviour of clupeid schools has been observed #in situ$ during unstressed period followed either by natural predation or by applying a controlled stress (a realistically painted model predator). Combined acoustic and visual (aerial and underwater) observation techniques were used. #In situ$ observations are characterized by a high variability of fish reactions in space and time. The variability in space obviously due to the large scale of observation which allows the silmutaneaous occurence of different types of behaviour in different regions. The variability in time is probably due to a large number of physiological or environmental influences changing unexpectedly between repeated experiments. The variability of fish reaction depends on the characteristics of the source of the stimuli : some sources (e.g. predators) induce different behavioural patterns according to the number of stimuli; others (e.g. boats) induce a single patterns, varying only in intensity. Consequences for acoustic signal identification are discussed. (Résumé d'auteur)
%B Symposia on Fish Behaviour in Relation to Fishing Operations
%8 1992
%$ 020BIOL ; 040PECHE03