Control of Development

An examination of conditions known to modify cockroach development may provide insight into the origins of termite polyphenism, the proximate causes of which are still little understood (Bordereau, 1985; Roisin, 2000). Here we focus on three extrinsic factors that may have influenced development as the termite lineage evolved: minor injuries, nourishment, and group effects. Each of these has a social component, in that each can be based on interactions with conspecifics rather than the external environment.

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