Rajendra Singh (Aphid Biocontrol Laboratory; Dept. of Zoology; University of
Gorakhpur; Gorakhpur - 273 009, U.P.; INDIA). Dr. Singh is working on faunal surveys of aphidiine
braconids, studies of the population dynamics of aphid parasitoids and hyperparasitoids, factors affecting
the sex ratios of the offspring of parasitoids, and other topics. He notes that his research team has
demonstrated that semiochemicals emanated by aphids increase not only the retention period of
parasitoids on the host locale, but also increase the reproductive potential of the parasitoid up to
50%.
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