Brood size and sex ratio in response to host quality and wasp traits in the gregarious parasitoid <i>Oomyzus sokolowskii</i> (Hymenoptera: Eulophidae).

However, the analysis showed a marginally significant relation between brood size and body weight of the 4th instar hosts ( χ 2 = 3.65, P = 0.048), with a gradual increase by ca 20% in brood size with each increase of 0.1 mg in host body weight; brood size ranged from 4 to 14 wasps with an average of 9.3 ± 0.3 (±SE) across host body weight from 0.18 to 0.69 mg ( Fig. 1C ).

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