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- Title
SURVEY OF PARASITOIDS AND PATHOGENS OF CABBAGE, BUTTERFLY PIERIS RAPAE(L.) (LEPIDOPTERA: PIERIDAE).
- Authors
EL-FAKHARANY, S. K. M.; AZAB, S. A.; HENDAWY, A. S.
- Abstract
Field experiments were conducted in 2013/14 season at EI-Riad and Sakha, Kafr EI-Sheikh Governorate, to survey and study population fluctuations of parasitoids and pathogen diseases of Pieris rapae (L.) in cabbage plantations. The survey of parasitoid species revealed the presence of one egg-parasitoid species: Trichogramma buesi Voegele (Fam.: Trichogrammatidae), two larval parasitoid species; Cotesia glomerata (L.) (Fam.: Braconidae) and Hyposoter sp. (Fam.: Ichneumonidae) and two pupal parasitoid species, Pteromalus puparum L. (Fam.: Pteromalidae) and Brachymeria femorata (Panzer) (Fam.: Chalcididae). Population densities of the egg-parasitoid was lower in November plantation than in September one, while larval and pupal parasitoids were higher in November plantation than in September one at both locations. Seasonal parasitisms of P. puparum was higher at EI-Riad district than at Sakha locality. The pupal parasitoid, P. puparum dominated on cabbage fields. The sex ratio in P. puparum adults was one male: 10 females. Larvae died with Granulosis virus was higher in September than in November plantation at both locations. Microsporidia disease caused larval mortality was lower in November plantation than in September plantation at EI-Riad while, it was higher in November plantation than that in September one at Sakha. Seasonal mortality % by Granulosis virus and Microsporidia pathogen diseases on P. rapae larvae was higher at EI-Riad than at Sakha. Granulosis disease caused larval mortality (6.62 - 7.46%) in October-December followed by (1.96 - 1.08%) in January-March at EI-Riad and Sakha, respectively. Microsporidia disease caused larval mortality % of 8.09 - 2.49% in October-December and in 8.82 - 8.60% in January-March at EI-Riad and Sakha respectively.
- Subjects
PIERIDAE; PARASITOIDS; PIERIS rapae
- Publication
Egyptian Journal of Agricultural Research, 2015, Vol 93, Issue 1(A), p79
- ISSN
1110-6336
- Publication type
Article