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Drifting behaviour as an alternative reproductive strategy for social insect workers
It is shown in the bumblebee Bombus terrestris that drifting is a distinct strategy by which fertile workers circumvent competition in their nest and reproduce in foreign colonies, and shows that the drifting of fertile workers reflects complex decision-making processes associated with in-nest reproductive competition.
Genetic Distance and Age Affect the Cuticular Chemical Profiles of the Clonal Ant Cerapachys biroi
Interestingly, and contrary to findings for several other ant species, fertility and reproductive activity showed no correlation with chemical signatures, suggesting the absence of fertility related CHCs, which implies that other cues are responsible for subcaste differentiation in this species.
Clonal ant societies exhibit fertility-dependent shifts in caste ratios
It is shown that societies of C. biroi alter caste ratios by considerably increasing the production of queens when larvae are reared by sterile individuals in 2 situations: when senescent colonies are faced with food shortage or when well-fed larvae areReared by callow workers due to persisting plentiful resources.
Opportunist slave-making ants Myrmoxenus ravouxi discriminate different host species from a non-host species
It is shown that Myrmoxenus ravouxi slave-making workers are not only more aggressive toward heterocolonial host and potential host species workers when compared with non-host species workers, but also toward hetericolonial host workers than towardheterocolonial conspecifics.
Dysfunctional reproductive physiology, and not reproductive activation, triggers policing in experimental colonies of the clonal ant Cerapachys biroi
It is demonstrated that ovarian activation is not enough to trigger policing in experimental colonies, supporting the previous hypothesis that aggressed individuals are not just unsynchronized, but possibly non-responsive to colony-level regulation cues and thus dysfunctional in their reproductive physiology.