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Neighbour–stranger response differences (NSRDs) are when individuals are either more aggressive (“Nasty Neighbour”) or less aggressive (“Dear Enemy” or “Dear Neighbour”) to direct neighbours than to other competitors perceived as “strangers” by the residents. Such effects are often reported in ants which, being fixed‐location central‐place foragers, may compete directly with their neighbours for...
Despite published reports of inter‐colony aggression and invasion in the laboratory, direct aggressive competition for resources has not previously been considered as a driving force for the large colony size in naked mole‐rats (Heterocephalus glaber). We report evidence that wild colonies of naked mole‐rats invade neighbouring colonies and thus expand their territories. Furthermore, as has been observed...
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