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La nutrition des fourmis tropicales II. Comportement alimentaire et régime deCamponotus vividus (Smith) (Hymenoptera Formicidae) comparaison intragénérique

Food of tropical ants. II. Feeding behaviour and diet ofCamponotus vividus (Smith) (Hymenoptera formicidae) Intrageneric comparisons

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Résumé

Camponotus vividus est une fourmi arboricole dont l'activité de prospection s'exerce de jour. Elle présente deux pics d'activité vers 6 heures et 17 heures. Le nid est polycalique et la société adulte compte plusieurs milliers d'individus. Les ouvrières chassent dans un rayon de 30 à 40 mètres autour des calies et montent jusque dans la canopée à 60 mètres du sol. Les produits d'origine végétale, principalement sous forme de gommes, représentent plus de 80 % de l'alimentation, le reste étant constitué d'insectes.

Le comportement de chasse des diverses espèces deCamponotus favorise l'exploitation optimale des ressources du milieu par l'utilisation de régimes alimentaires complémentaires, unddécalage dans le temps des périodes d'activité maximale et une séparation spatiale des aires prospectées.

Summary

Camponotus vividus is an arboricolous ant that forages primarily during daytime. Its hunting activity is highest around 6 a.m. and 5 p.m. The structure of the nest is polycalic and the colony numbers several thousands of ants. Workers forage within a hirizontal range of 30 to 40 meters from the nest and on the trees up to a height of about 60 meters. They usually perform this task in groups. The foraging area gradually moves around with time. Most variations of bioclimatic factors do not seem to exert any direct influence on the period of activity. These ants respond only to light when they start hunting, and they stop when it rains heavily on the foliage.

An analysis of their made through collecting specimens brought to the nest indicates that about 80 % of the total food is of vegetable origin. They also tend Homoptera. The proteins in their diet is obtained through predation on insects.

Comparisons with other local species of the genus indicate a good exploitation of the potentials of the conmunity: diets are complementary, peaks of activity are spread in time, and hunting areas never overlop.

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Lévieux, J., Louis, D. La nutrition des fourmis tropicales II. Comportement alimentaire et régime deCamponotus vividus (Smith) (Hymenoptera Formicidae) comparaison intragénérique. Ins. Soc 22, 391–403 (1975). https://doi.org/10.1007/BF02224114

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  • DOI: https://doi.org/10.1007/BF02224114

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