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Replacement of the royal pair in Macrotermes michaelseni

  • R. Sieber (a1) and J. P. E. C. Darlington (a1)

At intervals of 2 months over 1 year, 64 royal cells were removed from mounds of Macrotermes michaelseni to find out whether a new royal pair was produced. In five mounds replacement reproductives were found. Young reproductives from incipient laboratory colonies were never accepted as replacements if they were introduced after the removal of the primary reproductives. One out of 10 royal pairs was accepted if the royal cell was introduced immediately after removal of the original one, and three out of 10 survived if the royal cell was introduced 1 week after the removal of the original one.

Replacement reproductives were only produced when nymphs or alates were in the nest at the time the primary reproductives were removed. It was not possible to find out at what time after the removal a new royal pair was accepted but measurements of the replacement queens showed that they can become fully physogastric within 7 months.

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C. Bordereau (1975) Déterminisme des castes chez les termites supérieurs: mise en évidence d'un contrôle royal dans la formation de la caste sexuées chez Macrotermes bellicosus Smeathman (Isoptera, Termitidae). Insectes soc. 22, 363374.

Ch. Noirot (1956) Les sexués de remplacement chez les termites supérieurs (Termitidae). Insectes soc. 3, 145158.

R. Sieber and R. H. Leuthold (1981) Behavioural elements and their meaning in incipient colonies of the fungus growing termite Macrotermes michaelseni (Isoptera: Macrotermitinae). Insectes soc. 28, 371382.

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International Journal of Tropical Insect Science
  • ISSN: 1742-7584
  • EISSN: 1742-7592
  • URL: /core/journals/international-journal-of-tropical-insect-science
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