Investigations to evaluate the side effects of pesticides on the green lacewing Chrysoperla carnea Steph. (Neuroptera, Chrysopidae) in the field

Abstract

Investigations were carried out to assess the side effects of pesticides in the field on Chrysoperla carnea. The experiment is based on the release of mass reared larvae on orchard plants such as apples, strawberries, red or black currants, and the application of pesticides at the recommended concentrations. Monitoring was carried out by C. curnea-larvae, trapped on baiting cards, which were distributed on the plants and contained eggs of the Angoumois grain moth Sitotroga cerealella (Olivier). In order to optimize the method, different coloured baiting cards, the most effective way to position them in the field and the best time for monitoring was researched. The results indicate that black baiting cards placed at the lower part of the plants give the highest catches. About five warm days with no or little rain were found to be needed to conduct the test.

The predation of Chrysoperla carnea (Neurop., Chrysopidae) on eggs and larvae of Mamestra brassicae (Lep., Noctuidae)

“…have long been noted as efficient predators on many important agricultural insect pests (STARK and WHITFORD, 1987). In addition they have many desirable attributes for use in biological control: they inhabit many different agroecosystems (ABLES and RIDGWAY, 1980;RIDGWAY and MURPHY, 1984;KING et al, 1985), they are tolerant to many insecticides (KING et al, 1985;CROFT, 1990;WETZEL et al, 1991) and they are quite easily mass reared (FILIPPOV, 1982;TULISALO, 1984;HASEGAWA et al, 1989).…”

EFFECT OF PREY TYPES ON SOME BIOLOGICAL ASPECTS OF Chrysoperla carnea (STEPH.) UNDER LABORATORY CONDITIONS.

“…It has relatively short generation times, adults lack a prey requirement for reproduction, and thus oviposition is not dependent on large population of prey (Hagen et al 1970); Tuber and Tuber (1974). Larvae have a relatively broad range of acceptable prey (New, 1975;Hydron and wihtcomb, 1979), tolerance to insecticides (Croft, 1990), Wetzel et al (1991); Abdel-Salam (1995) and they are amenable to mass rearing, releasing, and manipulation in the field Ridgway et al (1970); Hagen et al 1976), Tassan et al (1979); (Hasegawa et al, 1989); (Tauber and Tauber 1993). The role of C. carnea in controlling different aphid species on various crops has been studied by several investigators (Sundby, 1966;Scopes, 1969); Hagley, 1989).…”