Les Sequences De Remplacement Chez Ctenodactylus gundi: Competition Ou Cooperation?

Abstract Ctenodactylus gundi , a colonial rodent inhabiting saharian Atlas, is often seen standing at the top of the rocks. At more or less regular intervals, another conspecific is taking the place of the “resident” animal. This relief impues only amicable reliationships and is to be considered as a kind of cooperation. The function of the resident, as a specific element against predation, is discussed.