DIAERETIELLA RAPAE PDF

Diaeretiella rapae (MacIntosh) (Hymenoptera: Braconidae) is frequently reported to be an important biological suppressant, but in rapidly maturing crops such. While the aphid Lipaphis pseudobrassicae (Davis) (Hemip.: Aphididae: Macrosiphini) is considered one of the preferred hosts of Diaeretiella rapae ( McIntosh). PDF | Different life-table statistics of the aphid parasitoid, Diaeretiella rapae ( McIntosh) (Hymenoptera: Braconidae) were estimated on its host, the mustard aphid.

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Email this article Login required. Email the author Login required. Biology of Diaeretiella rapae Mc Intosh Hymenoptera: Abstract The biological parameters of Diaeretiella rapae and influence diaeretiepla the host age on the life cycle of the D.

The fecundity of Diaeretiella rapae was eggs per female. Eggs were transparent white but appeared light brownish under high magnification. Average incubation period was 1.

The first instar larva was transparent white, mandibulate, caudate and measured 0. The second instar larvae were creamy white and curved slightly, lacked mandibles, salivary gland and were hymenopteriform.

Diaeretiella rapae

Third instar larvae were light yellow in colour, hymenopteriform and measured 1. Fourth instar larvae measured 2.

The average total larval duration of D. When the aphid host died, its body changed to hardened exoskeleton called mummy. Under laboratory condition, egg to adult development of D. The adult female parasitoid was bigger than male. Adult female measured 2. Longevity of adult was 6.

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The life cycle parameters of parasitoid varied with rapaw age of host insect. On 48 hrs old nymph of B. Total life cycle duration of the parasitoid was completed in