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Influence du Facteur Héréditaire et de la Densité de Population sur l'Ontogénèse de l'Agressivité chez l'Epinoche (Gasterosteus Aculeatus L.)

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image of Netherlands Journal of Zoology
For more content, see Archives Néerlandaises de Zoologie (Vol 1-17) and Animal Biology (Vol 53 and onwards).

Quatre groupes de six épinoches, provenant de deux pontes, ont été observés au cours des premiers mois de leur existence. Les groupes se différenciaient par 1) leur origine génétique, et 2) l'espace disponible dans l'aquarium. Pratiquement aucune agressivité n'apparut dans les groupes de l'une des pontes, ce qui souligne l'importance de l'hérédité. Les scores des groupes de l'autre ponte indiquent quant à eux que la fréquence d'agressivité au sein des groupes est fonction directe de leur densité de population.

Affiliations: 1: Laboratoire de Psychologie expérimentale, Université de Bruxelles, 117 av. Ad. Buyl, Bruxelles, Belgique


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