OBSERVATIONS ON LIFE HISTORY AND SEX RATIO VARIABILITY OF EUPTEROMALUS DUBIUS (HYMENOPTERA: PTEROMALIDAE), A PARASITE OF CYCLORRHAPHOUS DIPTERA
- 1 November 1976
- journal article
- research article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 108 (11) , 1267-1274
- https://doi.org/10.4039/ent1081267-11
Abstract
Females of Eupteromalus dubius (Ashm.) oviposit on pupae of cyclorrhaphous Diptera and the larvae develop gregariously as ectoparasites. Details of the life history of E. dubius are described. A progressively lower percentage of female progeny of E. dubius matures as the parasite:host ratio increases. Three mechanisms that may cause this sex ratio change are examined and discussed.Keywords
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