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Nantes Le secret des fourmis dévoilé à l'université

1 22.01.2016 18:12
  • Les fourmis travailleuses sont très organisées. Photo archives CO

    Les fourmis travailleuses sont très organisées. Photo archives CO

  • Les fourmis travailleuses sont très organisées. Photo archives CO

    Les fourmis travailleuses sont très organisées. Photo archives CO

  • Les fourmis travailleuses sont très organisées. Photo archives CO

    Les fourmis travailleuses sont très organisées. Photo archives CO

L'université de Nantes révèle que les chercheurs du Laboratoire d'Informatique Nantes Atlantique ont réussi à expliquer l'habitat des fourmis.

On savait les fourmis travailleuses. Mais on ignorait jusqu'à présent le schéma bien particulier que ces « bâtisseuses » utilisaient pour construire leur habitat. Des chercheurs du Laboratoire d'Informatique Nantes Atlantique (LINA - Université de Nantes - École des Mines de Nantes - CNRS), en partenariat avec des collègues de l'Université de Toulouse, viennent de percer le secret de ce phénomène.

Pour le comprendre, les scientifiques nantais ont modélisé en 3D les structures, parfois très complexes, construites par les fourmis à l'aide de techniques d'imagerie de pointe.

Puis, en lien avec le Centre de Recherche sur la cognition animale de Toulouse, ils ont pu analyser le comportement individuel des fourmis et développer un modèle mathématique 3D pour mieux comprendre leur dynamique de construction.

Les résultats de ces travaux révèlent que les fourmis « s'auto-organisent » en interagissant avec les structures qu'elles bâtissent.

Grâce à un signal chimique, une phéromone, qu'elles ajoutent à leur matériel de construction, les fourmis parviennent à coordonner leurs actions et même à déterminer la forme du nid qu'elles construisent.

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