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1 results

  • Potentiel Reproducteur de Dinarmus basalis Rond. (Hymenoptera: Pteromalidae) en Présence de Son Hôte Callosobruchus maculatus F. (Coleoptera: Bruchidae) en Zone Guinéenne

  • D. Mondedji, K. Amevoin, Y. Nuto, I. A. Glitho
  • Journal:
    Insect Science and Its Application / Volume 22 / Issue 2 / June 2002
    Published online by Cambridge University Press:
    19 September 2011, pp. 113-121
    Print publication:
    June 2002

  • The age-dependent fecundity and offspring production of females of a solitary ectoparasitoid Dinarmus basalis Rond. (Hymenoptera: Pteromalidae) were determined on its host Callosobruchus maculatus F. (Coleoptera: Bruchidae). The resulting data were used to determine the longevity and reproductive potential of the species, by establishing its life and fertility tables. In the presence of 16 hosts renewed every 48 hours, D. basalis females had a mean longevity of 32.6 ± 1.6 days. They laid an average of 136.5 ± 55.2 eggs, parasitised 132.7 ± 53.9 hosts, and produced 111.8 ± 3 offspring, consisting of 58.3 % of males and 41.7 for females. The total mean development time was 14.0 ± 0.7 days for females and 11.8 ± 0.8 days for males. The net reproductive rate (Ro) was 38.9 females progeny per adult female, and the intrinsic rate of population increase (rm) 0 16 per day. The generation time (G) was 22.5 days and the doubling time (DT) 4.3 days. These parameters permitted to determine the reproductive potential of D. basalis as a biological control agent against the bruchid in West Africa.