Issue |
Bull. Fr. Pêche Piscic.
Number 334, 1994
|
|
---|---|---|
Page(s) | 169 - 176 | |
DOI | https://doi.org/10.1051/kmae:1994019 | |
Published online | 01 August 2008 |
Bilan de 4 années d'étude du comportement reproducteur et de l'hybridation chez Barbus barbus (L., 1758) et Barbus meridionalis (RISSO, 1826)
Four years research on the reproductive behaviour and hybridization of Barbus barbus and Barbus meridionalis
Université de Liège, Service d'Ethologie et de Psychologie animale, Laboratoire d'Éthologie des Poissons, 22 quai Van Beneden, 4020 Liège, Belgique.
Reçu :
21
Décembre
1993
Accepté :
14
Avril
1994
Cet article synthétise les résultats de 4 années d'étude du comportement de reproduction et de l'hybridation chez Barbus barbus (L., 1758) et Barbus meridionalis (Risso, 1826) en aquarium. On y aborde successivement la description des parades sexuelles, la mise en évidence du comportement d'hybridation, l'étude des rythmes biologiques nycthéméraux et l'influence des stimuli visuels sur les comportements sexuels.
Abstract
This paper reviews the main results of 4 years studies on the reproductive behaviour of Barbus barbus (L., 1758) and Barbus meridionalis (Risso, 1826) under controlled conditions in aquarium. The reproductive behaviour is described as well as the behavioural mechanisms of hybridization. During the spawning act - sometimes preceded by «forehead swim» in which two fish swim together, at high speed, head against head - the female and the few accompanying males rise from the gravel and move their genital papilla in the gravel while releasing ova or sperm (fig. 1 and 2). The reproductive behaviours of Barbus barbus and Barbus meridionalis appear to be similar and hybridizations were observed, showing that no complete behavioural barrier blocks the mating of the two species (fig. 2). The daily rhythms of activity are compared within the two species. The influence of temperature and daylength on the daily rhythms of activity is discussed. In winter conditions, barbels exhibit a night activity rhythm. Spawning occurs during daytime or during the night (fig. 3). The influence of spawning stimuli is analysed using dummies of different sizes and colors (photo I). Barbels seem to prefer white, grey, yellow and brown colors to red or black colors.
Mots clés : comportement reproducteur / barbus barbus / barbus meridionalis / hybridation / rythmes biologiques
Key words: reproductive behaviour / barbus barbus / barbus meridionalis / hybridization / biological rhythms
© ONEMA, 1994
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