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Trichogrammatids as Natural Egg-parasitoids Of Major Lepidopterous Pests In Some Agro-Ecosystems Of Himachal Pradesh

CSK Himachal Pradesh Agricultural University Repository

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Title Trichogrammatids as Natural Egg-parasitoids Of Major Lepidopterous Pests In Some Agro-Ecosystems Of Himachal Pradesh
 
Creator Dokras, Ashish L.
 
Subject 632.7 Insect Pests
 
Description Trichogrammatids represent a large group of minute wasps that parasitize eggs of various insect pests of economic significance. These wasps vary from 0.40-0.70 mm in length and 0.15-0.25 mm in width across head. This group can be identified by 3-segmented tarsi, broad fore wings with pubescence in lines and the marginal and stigmal veins forming a single curve (Singh et al., 1994b). The female oviposits within the egg of the host. The egg stage lasts approximately one day, the larva feeds on the egg contents and passes through larval (3-4 days) and pupal (4-5 days) stages to emerge as an adult, which survives for 6-8 days. Thus, the life cycle is completed in 8-10 days within the host egg (Manjunath, 1991).
 
Date 2002
 
Type Thesis
NonPeerReviewed
 
Format text
 
Language en
 
Identifier http://hillagricrepository.co.in/75/1/13065.pdf
Dokras, Ashish L. (2002) Trichogrammatids as Natural Egg-parasitoids Of Major Lepidopterous Pests In Some Agro-Ecosystems Of Himachal Pradesh. PhD thesis thesis, Dr. Y.S. Parmar University of Horticulture and Forestry.