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Nirmala, M. R.
- Biology of Gregarious Parasitoids of Uzi Fly, Exorista bombycis Louis (Diptera: Tachinidae)
Abstract Views :251 |
PDF Views:130
Authors
M. R. Nirmala
1,
G. Veeranna
1
Affiliations
1 Karnataka State Sericulture Research and Development Institute, Thalaghattapura, Bangalore 560 062, Karnataka, IN
1 Karnataka State Sericulture Research and Development Institute, Thalaghattapura, Bangalore 560 062, Karnataka, IN
Source
Journal of Biological Control, Vol 12, No 1 (1998), Pagination: 11-17Abstract
Biology of indigenous parasitoids namely. Trichopria sp., Exoristobia philippinensis Ashmead and Spalangia endius Walker of the uzi fly Exorista bombycis Louis was studied in the laboratory. All the parasitoids lived significantly longer in the presence of host and diet compared to either diet or host. They preferred to parasitize 2-4 days old host pupae and per cent parasitism was highest (4.23,5.0 and 8.43) on this age group. Adult parasitoids mated soon after emergence. The average fecundity was higher in E. philippinensis and Trichopria sp. compared to S. endius. Arrhenotokous parthenogenesis occurred in all the three species of parasitoids.Keywords
Biology, Exorista bombycis, Exoristobia philippinensis, Gregarious parasitoid, Spazangia endius, TrichopriaSp.Full Text
- Spalangia endius Walker (Pteromalidae) - A New Parasitoid of Exorista sorbillans Wiedemann (Tachinidae)
Abstract Views :222 |
PDF Views:118
Authors
G. Veeranna
1,
M. R. Nirmala
1
Affiliations
1 Entomology Unit, Karnataka State Sericulture Development Institute, Thalaghattapura, Bangalore - 560 062, IN
1 Entomology Unit, Karnataka State Sericulture Development Institute, Thalaghattapura, Bangalore - 560 062, IN
Source
Journal of Biological Control, Vol 6, No 2 (1992), Pagination: 93-96Abstract
The uzifly Exorista sorbillans Wied. is a serious larval endoparasite of silkworm, Bombyx mori L. causing heavy damage to an extent of 15-20% to sericulture industry (Mukherjee, 1919; Gosh, 1949; Jolly, 1981; Kasturi Bai et al., 1986). Biological control methods have gained increasing acceptance and popularity because of its specificity to target pest and also being non-hazardous to human welfare, attempts are being made to contain uzifly menace using its parasitoids. Several larval/pupal parasitoids of E. sorbillans have been recorded. They are Nesolynx thymus (Pradip Kumar et al., 1986), Trichopria sp, Exoristibia philippinensis (Veeranna et al., 1987 a; 1987 b), Dirhinus anthracia, Pachycrepoideus veerannai (Veeranna and Jyothi, 1988. 1991), Spilomicrus karnatakensis (Pradip Kumar et al., 1988) and Brachymeria lugubris (Samson and Ramadevi, 1985). In this report, yet another parasitoid Spalangia endius Walker of E. sorbillans has been reported for the first time. The life cycle of this species and its population growth rate have also been studied. The identity of S. endius was established by Dr.T.C.Narendran, Professor of Zoology, University of Calicut, India.Keywords
Uzifly, Exorista sorbillans, Parasitoid, Spalangia endius.Full Text