- Scope of parasites in bollworm control
- 作者: Suruli Velu, T
- literature id: 44137
- catalog nub: TPL_SURULI1989SOPIB10101060
- 文献库: Taxapad收录文献
- type: article
- publication name: Entomon
- publish date: 1989-01-01
- pages: 101-106
- volume: 14
- issue: 1-2
- 创建时间: 2021-03-02 15:00:32
- create by: zxmlmq (admin)
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comment:
none Through inundative releases of Chelonus blackburni Cameron (Hym. Braconidae) and Bracon kirkpatricki (Wilkinson) (Hym. Braconidae) recovery of 11.5 and 8.4 per cent was obtained respectively from the larvae of Earias vittella Fab. and Pectinophora gossypiella Saunders. The release of the parasite, C. blackburni brought down the infestation of E. vittella considerably in the shed fruiting bodies, squares and flowers. In the laboratory, three day old parasites exhibited a greater efficiency in parasitizing the eggs of E. vittella, as compared with one, two and four day old parasites and one day old eggs were more readily acceptable for parasitization than two day eggs of E. vittella. The parasite emergence was greater at 11:1 ratio of host-parasite (E. vittella and C. blackburni) while the parasitism was greater at 9:1. The incidence of the parasite, Apanteles angaleti Mueseback (Hym., Braconidae) on P. gossypiella was at a greater level in February, which declined considerably in the subsequent months upto May, although the host build up showed a significant increase.
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