Preferencia de Apanteles galleriae Wilkinson (Hymenoptera: Braconidae) por Galleria mellonella (L.) ou Achroia grisella (Fabricius) (Lepidoptera: Pyralidae) | Host preference of Apanteles galleriae Wilkinson (Hymenoptera: Braconidae) for Galleria mellonella (L.) or Achroia grisella (Fabricius) (Lepidoptera: Pyralidae)
2004
Zacarin, G.G. | Gobbi, N. | Chaud-Netto, J.
Caterpillars of Galleria mellonella (L.) and Achroia grisella (Fabricius), considered pests of beehives, were used to test host preference of the parasitoid Apanteles galleriae Wilkinson. On average, A. galleriae females originated from a lab rearing on both hosts preferred to parasitize caterpillars of A. grisella in 67% of the tests. The same experiment was repeated using A. galleriae females that had been reared during five generations in each of the host species, with similar results. A. galleriae females reared in caterpillars of G. mellonella parasitized A. grisella caterpillars in 64% of the tests, whereas the A. galleriae females reared in A. grisella parasitized the same species in 63.5% of the tests. This preference was not dependent on the number of host caterpillars used in each test. We conclude that A. grisella is a better host than G. mellonella to rear A. galleriae under laboratory conditions, and that the parasitoid is a promising natural enemy for the biological control of these species of wax moths because it can be easily reared in both species and none of these hosts show resistance to the parasitoid.
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