Ragab,, M., Ghanim, A., Abou EI-Naga, A., Saleh, A. (2002). ECOLOGICAL STUDIES ON CERTAIN APHID PARASITOIDS ESPECIALLY THOSE OF Aphis craccivora Koch.. Journal of Plant Protection and Pathology, 27(4), 2611-2619. doi: 10.21608/jppp.2002.253658
M. E Ragab,; A. A. Ghanim; A. M. Abou EI-Naga; A. A. Saleh. "ECOLOGICAL STUDIES ON CERTAIN APHID PARASITOIDS ESPECIALLY THOSE OF Aphis craccivora Koch.". Journal of Plant Protection and Pathology, 27, 4, 2002, 2611-2619. doi: 10.21608/jppp.2002.253658
Ragab,, M., Ghanim, A., Abou EI-Naga, A., Saleh, A. (2002). 'ECOLOGICAL STUDIES ON CERTAIN APHID PARASITOIDS ESPECIALLY THOSE OF Aphis craccivora Koch.', Journal of Plant Protection and Pathology, 27(4), pp. 2611-2619. doi: 10.21608/jppp.2002.253658
Ragab,, M., Ghanim, A., Abou EI-Naga, A., Saleh, A. ECOLOGICAL STUDIES ON CERTAIN APHID PARASITOIDS ESPECIALLY THOSE OF Aphis craccivora Koch.. Journal of Plant Protection and Pathology, 2002; 27(4): 2611-2619. doi: 10.21608/jppp.2002.253658
ECOLOGICAL STUDIES ON CERTAIN APHID PARASITOIDS ESPECIALLY THOSE OF Aphis craccivora Koch.
Economic Entomology Department, Faculty of Agriculture, Mansoura University,
Abstract
Laboratory and field experiments were carried out at Mansoura district to survey the primary parasitoids associated with five aphid species namely, Aphis craccivora Koch, Brevicoryne brassica(L.), Sitobion avenae (Fabricjus), Rhopalosiphum maidis (Fitch) and R.padi (L.). These species infested the host plants ,broad bean, cowpea, cabbage, wheat and corn during the two seasons of 1998 and 1999. The results indicated that five aphid parasitoids were recorded. Among them, Diaeretial/a rapae (M'lntosh) was the most common parasitoid which emerged from the four aphid species, Aphis craccivora, Brevicoryne brassica, Sitobion avenae and R.padi. There are no previous records for Diaeretial/a rapae as a parasitoid of Acraccivora in Egypt. Therefore, the present study represents the first record of this species as an important parasitoid of Acraccivora. The population density of this aphid species and its parasitoids as well as the percentages of parasitism on broad bean and cowpea were studied.The peaks of mummified aphids on broad bean were recorded during January and March, while it were recorded on cowpea in September and August, in 1998 and 1999, respectively. The results also indicated the effective role of these parasitoids in controlling the infestations of Acraccivora on both broad bean and cowpea in the field.
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