Ovipositional preferences of the walnut husk fly, Rhagoletis completa (Diptera: Tephritidae) on various fruits, vegetables and varieties of walnuts

Abdulmajid Kasana, M. T. AliNiazee

Abstract


The ovipositional preferences of the walnut husk fly, Rhagoletis completa, were studied using different fruits, vegetables, and walnut cultivars. Among the fruits and vegetables tested, pear was the substrate most often chosen for egg deposition, followed by nectarine, apple, green pepper, potato, and tomato. The eggs hatched equally well in all the substrates, but the larvae completed their growth and development only in nectarine. Among the varieties of walnuts tested, the most egg punctures per nut were in CVs 'Spurgeon' and 'Manregian' and the most eggs per nut were deposited in 'Manregian'. The females made the fewest egg punctures deposited the fewest eggs per nut in 'Hartley'.

Key words: Oviposition; development; walnut; walnut husk fly; Rhagaletis completa


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