Journal Paper

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Journal: دانش کشاورزی
Year:1381 | Volume:12 | Issue:2
Start Page:43 | End Page:60

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Title

EFFECT OF ADULT AND LARVAL DIETS ON THE BIOLOGY OF PREDATORY FLY, LEUCOPIS GLYPHINIVOM TANAS (DIP.: CHAMAEMYIIDAE)

Pages

 Start Page 43 | End Page 60

Abstract

 Considering the importance of alternative food sources for predators in times of prey scarcity, effect of five species of aphids; Aphis fabae Scop., A. gossypii Glov., Acyrthosiphon pisum (Harr.), Myzus persicae (Sulz.) and Sipha maydis Pass. were studied on mortality and developmental time of three larval instars, puparium, Weight of one day- old puparium, growth rate index, adult longevity, fecundity and egg fertility of LEUCOPIS glyphinvora Tanas. Adverse effects of preys, S.mayd and A.Gossypii were observed on the biology of predator due to their defensive mechanism and characteristics of host plant. Effects of six adult artificial DIETS including alfalfa pollen + corn pollen+ water, four mixtures of sugar or honey + yeast + water as artificial HONEYDEWs, distilled water and HONEYDEW of A. fabae as control treatment were studied. Alfalfa pollen + corn pollen + water and distilled water treatments decreased adult longevity and inhabited oviposition. Artificial HONEYDEWs decreased adult longevity and fecundity but were not significantly different. It seems that the presence of a sugar in a diet is necessary for maintenance energy of L.glyphinivora. This predator is probably a proovigenic insect and oogenesis completed with consumption of food supply of larval stages.

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