Trichogramma evanescens West. (Hym., Trichogrammatidae) as an egg parasitoid of Grape MothLobesia botrana (Den. & Schiff.) (Lep., Tortricidae)
- 44 Downloads
The adaptation of the primary internal parasitoid,Trichogramma evanescens (Westw.), as an egg parasitoid ofLobesia botrana (Den. & Schiff.) was the first report in Alexandria region, Egypt. The life-span of this parasitoid on eggs ofL. botrana andSitotroga cerealella Ol. was investigated.
The duration from egg to adult, longevity of adult stage, sex-ratio and total life cycle each of the two hosts were recorded. The ovipositional periods of mated females ofT. evanescens on egg ofL. botrana at 27±2co and 75±2% R.H. were studied.
Also, percentages of parasitism byT. evanescens ranged from 22%–64% on the eggs ofL. botrana. Therefore, this parasitoid was very efficient as a biocontrol agent against the most serious grape pestL. botrana in Egypt.
KeywordsLife Cycle Plant Physiology Plant Pathology Schiff Adult Stage
- Dugast, J. F., 1982:Trichogramma as parasites of grape moth. Influence of various substituted hosts on their biology and biometry.Lobesia botrana, Eupoecilia ambiguella. Biological control in vineyard. Record input by CEC (Commission of European Communities). INRA, France 1982, 26 p.Google Scholar
- Hegazi, E. M.; El-Minshawy, A. M.; Hammad, S. M., 1977: Mass rearing of the Egyptian cotton leaf worm,Spodoptera littoralis (Boisd.) on semiartificial diet. Proc. 2nd Arab Pesticide Conf., Tanta Univ.Google Scholar
- Hosny, A.;Samak, M. M., 1958: Studies on the effect of some new insecticides onPolychrosis botrana (Schiff.) (Lep., Tortricidae) in Egypt. Agric. Res.1, 36.Google Scholar
- Sengonça, Ç., 1987: Occurrence and importance ofTrichogramma semblidis Auriv. (Hymenoptera; Trichogrammatidae) an egg-parasite of grape vine moth in the Ahrvalley. J. Appl. Ent.103 (5), 527–531.Google Scholar
- Sengonça, Ç.;Schade, M.;Klute, J., 1990: Ascertainment of adequate alternative hosts for the support ofTrichogramma semblidis Auriv. (Hym., Trichogrammatidae) as an egg-parasite of the grape vine moth. II Host influence on the quality of the parasite. J. Appl. Ent.110 (4), 246–325.Google Scholar
- Shenishen, Z.;El-Sufty, R., 1982: The influence of some cereal on certain biological aspects of the grain mothSitotroga cerealella (Oliv.). (Lep; Gelich.) J. Agric. Res. Tanta Univ.8 (2), 1982.Google Scholar
- Snedecor, G. W., 1957: Statistical methods applied to experiments in agriculture and biology. The Iowa State college press, 5th ed.Google Scholar
- Tavares, J.;Oliveira, L.;Teixeira, R.;Anunciada, L.;Moreira, I.;Santos, F.;Madeira, D.;Henriques, L.;Matius, H., 1989: Biological control ofLobesia botrana Den. and Schiff. (Lepidoptera, Tortricidae) by means ofTrichogramma cacoeciae Marchal (Hymenoptera, Trichogrammatidae). Bol. Soc. port Ent.103, 1–11.Google Scholar
- Zapryanov, A.;Stoeva, R. C., 1982: Parasitic entomofauna onLobesia botrana Schiff. (Lepidoptera, Tortricidae) in South-Western Bulgaria and its role in reducing the density of the pest. J. Art. Bulgar.19 (3), 74–80.Google Scholar