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Following observations in California, during, 1993-95, the existence of both semi-claustral founding and worker-type behaviour are reported in new gynes of Messor andrei. Worker-type behaviour may be a non-adaptive corollary of semi-claustral colony founding, and represents little cost to colony...

Brown, M. J. F.
Insectes Sociaux, 1999, 46, 2, pp 194-195

Some social insects produce workers of variable size and/or shape. One hypothesis to explain such variation is that it increases colony efficiency in performing diverse tasks, with greater efficiency leading to greater colony-level fitness. Using the granivorous ant Messor pergandei, which produces ...

Waser, N. M.
Journal of Insect Behavior, 1998, 11, 3, pp 451-462