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Nest site selection is a frequent context for decision making in ants, but little is known of the criteria used to make a choice. We tested the nest site preferences of Leptothorax curvispinosus, both by measuring hollow acorn nests occupied in nature, and by inducing laboratory colonies to choose between artificial nests of different design. Three criteria were examined. (1) Entrance size: the ants...
Juveniles of the Australian common imperial blue butterfly, Jalmenus evagoras, produce substrate-borne vibrational signals in the form of two kinds of pupal calls and three larval calls. Pupae stridulate in the presence of conspecific larvae, when attended by an ant guard, and as a reaction against perturbation. Using pupal pairs in which one member was experimentally muted, pupal calls were shown...
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