Summary
Analysis of allozyme markers was carried out on 16 colonies of the termiteIncisitermes schwarzi in which one or both primary (founding) reproductives had been replaced by secondary reproductives. About one-quarter of field-collected colonies have replacement reproductives, and the genetic data suggest that in most of these a single replacement event had occurred. Genetic evidence for a second replacement event was found in one colony. Genetic analysis of the offspring allowed the following conclusions: (1) Soldiers are a relatively long-lived caste, so that even in colonies in which all other members have been replaced by offspring of the secondary reproductives, the soldiers remain the offspring of the primary reproductives; and (2) when primary reproductives are replaced by secondary reproductives, the nosoldier offspring of the former are completely replaced by those of the latter over a period of about two or three years, probably as a result of the normal maturation of colony members (workers, nymphs, and alates). The results provide no evidence for the existence of a true sterile worker caste in this species.
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Luykx, P. Turnover in termite colonies: a genetic study of colonies ofIncisitermers schwarzi headed by replacement reproductives. Ins. Soc 40, 191–205 (1993). https://doi.org/10.1007/BF01240707
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DOI: https://doi.org/10.1007/BF01240707