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Titolo:
ESCAPE MANEUVERS OF SCHOOLING CLUPEA-HARENGUS
Autore:
DOMENICI P; BATTY RS;
Indirizzi:
DUNSTAFFNAGE MARINE RES LAB,POB 3 OBAN PA34 4AD ARGYLL SCOTLAND
Titolo Testata:
Journal of Fish Biology
, volume: 45, anno: 1994, supplemento:, A
pagine: 97 - 110
SICI:
0022-1112(1994)45:<97:EMOSC>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
FAST-START PERFORMANCE; ANGELFISH PTEROPHYLLUM-EIMEKEI; RETICULOSPINAL COMMAND NEURON; TROUT SALMO-GAIRDNERI; HERRING LARVAE; MAUTHNER CELL; TELEOST FISH; RESPONSES; KINEMATICS; BEHAVIOR;
Keywords:
SCHOOLING; ESCAPE BEHAVIOR; ESCAPE RESPONSE; LATENCY; ESCAPE TRAJECTORIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
P. Domenici e R.S. Batty, "ESCAPE MANEUVERS OF SCHOOLING CLUPEA-HARENGUS", Journal of Fish Biology, 45, 1994, pp. 97-110

Abstract

The escape behaviour of schooling herring startled by an artificial sound stimulus was observed by means of high speed video filming. Response latencies showed two distinct peaks, at 30 ms and c. 100 ms. Escape responses belonging to the two latency groups showed different turning rates during the first stage of the response, and showed different escape trajectories. We suggest that long latency escapes may be responses to startled neighbours or simply weak responses to the sound stimulus. In addition, the different contraction rates during the C-bend formation seen in the two latency groups may imply differences in the neuronal commands. The escape responses of herring were directed away from the stimulus more often than towards it (88% of the total). These away responses were more common in long latency responses, suggesting that the latter enable herring to be more accurate in discerning the direction of the threat. Startled fish contracting their body towards the stimulus (performing a towards response) appear to correct their escape course, since their escape trajectory distribution is non-uniformly distributed around 360 degrees and directed away from the stimulus. We hypothesize that when herring are schooling, the ability of each fish to correct its trajectory following turns towards the stimulus is enhanced.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 19:10:14