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Kumar, Pradyumn
- Evaluation of Different Rearing Media for Corcyra cephalonica (Stainton)
Abstract Views :236 |
PDF Views:164
Authors
Affiliations
1 IARI Campus, New Delhi, 110012, IN
2 National Centre for Integrated Pest Management, Pusa Campus, New Delhi 110012, IN
1 IARI Campus, New Delhi, 110012, IN
2 National Centre for Integrated Pest Management, Pusa Campus, New Delhi 110012, IN
Source
Journal of Biological Control, Vol 16, No 2 (2002), Pagination: 117-120Abstract
To determine the suitable food media for the mass production of Corcyra cephalonica (Stainton), eleven types of food media viz., sorghum, pearlmillet, maize, coarse rice, wheat bran, rice husk, sorghum + rice husk (9:1), pearl millet + rice husk (9:1), pearl millet + rice husk + wheat bran (5:1:1), maize + rice husk (9:1) and rice + rice husk (9:1) were used for rearing. Observations were taken on average development period, percentage of moth emergence and weight of eggs. Food efficiency index (FEI) was calculated by dividing the product of percent emergence and egg weight by average development period. The FEI was highest in case of sorghum followed by pearlmillet, maize, pearlmillet + rice husk + wheat bran, sorghum + rice husk, wheat bran and rice, while in other food media it was extremely low.Keywords
Corcyra cephalonica, Rearing Media.Full Text
- Effect of Low Holding Temperatures on Mummies of Copidosoma koehleri Blanchard (Hymenoptera:Encyrtidae)
Abstract Views :183 |
PDF Views:121
Authors
Affiliations
1 Project Directorate of Biological Control, Post Bag No.2491, H.A. Farm Post, Bellary Road, Bangalore-560024, IN
2 National Centre for Integrated Pest Management (lCAR), Lal Bahadur Shastri Bhavan, Block F, IARI Campus, Pusa, New Delhi -110012, IN
1 Project Directorate of Biological Control, Post Bag No.2491, H.A. Farm Post, Bellary Road, Bangalore-560024, IN
2 National Centre for Integrated Pest Management (lCAR), Lal Bahadur Shastri Bhavan, Block F, IARI Campus, Pusa, New Delhi -110012, IN
Source
Journal of Biological Control, Vol 9, No 2 (1995), Pagination: 94-98Abstract
Storage studies Were conducted on the mummies of Copidosoma koehleri Blanchard, an encyrtid polyembryonic parasitoid of the potato tuber moth, Phthorimaea operculella. The effect of storing C. koehleri mummies at 10°C and 15°C for periods ranging from 10 to 50 days was studied in the laboratory. Pre-emergence period was considerably delayed in the case of mummies stored at 10°C. The number of adults emerging per mummy was higher when stored at 15°C, but at this storage temperature, beyond 30 days, emergence occurred in storage. Considering the different storage temperature - period combinations, storage at 10°C for 10 days was most suitable as in this treatment, high per cent survival, maximum number of adults per mummy, and maximum fecundity were obtained. Hence, storage of C. koehleri mummies for 10 days at 10°C is suggested.Keywords
Copidosoma kochleri, Mummies, Phthorimaca operculella, Storage.Full Text
- Host-Parasitoid Interaction Between Chilo partellus (Swinhoe) and Allorhogas pyralophagus Marsh
Abstract Views :201 |
PDF Views:123
Authors
Affiliations
1 Biological Control Centre (NCIPM), Post Bag-2491, H.A. Farm P.Q., Bellary Road, Bangalore - 560 024, IN
2 National Centre for Integrated Pest Management, 646, Sector 21-A, Badkhal Road, Faridabad, 121 001, Haryana, IN
1 Biological Control Centre (NCIPM), Post Bag-2491, H.A. Farm P.Q., Bellary Road, Bangalore - 560 024, IN
2 National Centre for Integrated Pest Management, 646, Sector 21-A, Badkhal Road, Faridabad, 121 001, Haryana, IN
Source
Journal of Biological Control, Vol 7, No 2 (1993), Pagination: 72-74Abstract
The effect of different parasitoid-host ratios on the mass multiplication of a gregarious ectoparasitoid, Allorhogas pyralophagus Marsh was investigated. One parasitoid : one host was found to be the optimum ratio for multiplying the parasitoid on Chilo partellus (Swinhoe) as it resulted in the production of maximum number of cocoons and healthy adults, besides providing a high per cent parasitism.
Keywords
Chilo partellus, Allorhogas pyralophagus, Host - Parasitoid Ratio.Full Text
- Parasitising Efficiency of Chelonus blackburni Cam. and Copidosoma koehleri Blanch. Singly and in Combination against the Potato Tuber Moth
Abstract Views :212 |
PDF Views:115
Authors
Affiliations
1 Division of Entomology and Nematology, Indian Institute of Horticultural Research, Bangalore 560 089, IN
1 Division of Entomology and Nematology, Indian Institute of Horticultural Research, Bangalore 560 089, IN
Source
Journal of Biological Control, Vol 3, No 1 (1989), Pagination: 4-6Abstract
Laboratory Investigations were conducted to determine the efficiency of the two exotic parasitoids. Chelonus blackburni Cam. (Hymenoptera : Branconidae) and Copidosoma koehleri Blanch. (Hymenoptera: Encyrtidae) - to parasltlse the potato tuber moth (PTM), Phthorimaea operculella ZeII. (Lepidoptera: Gelechiidae). When exposures of individual species of parasitofd were compared with the combination of both the species, C. blackburni reduced PIM survival with a higher percentage of parasitism. Also, in the combination treatments, C. blackburni significantly reduced the survival of C. koehleri while the latter did not affect the survival of the fomer. None of the combination treatments were superior to individual exposure using C. blackburni with respect to host mortality and overall parasitold survival. Longevity of adults of C. blackburni was markedly reduced in the combination treatments. Also, the number of viable cocoons of C. blackburni was maximum in Individual exposure. Similarly, the longevity of the adults and number of mummies fonned by C. koehleri was reduced in the combination treatments when compared to individual exposure.Keywords
Phzhorimaea operculella, Chelonus blackburni, Copidosoma koehleri, Exotic Parasitoids, Parasitising Efficiency.Full Text
- Relationship Between the Host Age and the Fitness Components of Hyposoter didymator Thunb. (Hymenoptera: Ichneumonidae)
Abstract Views :208 |
PDF Views:122
Authors
Affiliations
1 Division of Entomology & Nematology, Indian Institute of Horticultural Research, Bangalore - 560089, IN
1 Division of Entomology & Nematology, Indian Institute of Horticultural Research, Bangalore - 560089, IN
Source
Journal of Biological Control, Vol 2, No 2 (1988), Pagination: 69-71Abstract
Hyposoter didymalor Thunb. was found to parasitise 0-6 day old Spodoptera litura (F.) larvae in the laboratory at 24.5 ± 1 °C and 65 per cent RH. Effect of host age on developmental period of immature stages, sex ratio of adults, size of the progeny and degree of succcssful parasitism (survivorship) of the parasitoid were investigated. There was a significant negative correlation between the host age and the parasitoid developmental period, while the size of the progeny was observed to increase with the age of the host. Maximum parasitism was observed in 5-day-old host larvae.Keywords
Hyposoter didymator, Hostage, Developmental Period, Sex Ratio, Size of the Progeny, Degree of Parasitism, Spodoptera litura.Full Text
- Incidence of Egg and Larval Parasitoids of Chilo partellus on Kharif Maize
Abstract Views :278 |
PDF Views:134
Authors
Jaswinder Kaur
1,
Pradyumn Kumar
1,
S. B. Suby
2,
J. C. Sekhar
3,
Anjali Upadhyaya
4,
J. K. Bana
5,
S. R. Yadav
6
Affiliations
1 Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi - 110012, IN
2 ICAR-Indian Institute of Maize Research, Pusa Campus, New Delhi - 110012, IN
3 ICAR-Winter Nursery Centre, Rajendernagar, Hyderabad - 500030, Telangana, IN
4 49/3, Grainger Avenue, Ashfield-2131, NSW, AU
5 Agricultural Experimental Station, At and Post Paria-396145, Valsad, Gujarat, IN
6 Harnathpura, Post-Jorpura-303328, Via Jobner, Rajasthan, IN
1 Division of Entomology, ICAR-Indian Agricultural Research Institute, New Delhi - 110012, IN
2 ICAR-Indian Institute of Maize Research, Pusa Campus, New Delhi - 110012, IN
3 ICAR-Winter Nursery Centre, Rajendernagar, Hyderabad - 500030, Telangana, IN
4 49/3, Grainger Avenue, Ashfield-2131, NSW, AU
5 Agricultural Experimental Station, At and Post Paria-396145, Valsad, Gujarat, IN
6 Harnathpura, Post-Jorpura-303328, Via Jobner, Rajasthan, IN
Source
Journal of Biological Control, Vol 34, No 1 (2020), Pagination: 37-42Abstract
The incidence of egg and larval parasitoids of Chilo partellus was monitored in insecticide free maize fields at the Indian Agricultural Research Institute, New Delhi, for three Kharif seasons of 2013 to 2015. The hymenopteran parasitoid, Trichogramma sp. was recorded to be the only egg parasitoid in this area, while a good number of larvae were parasitized by braconid, Cotesia flavipes. The egg parasitism was recorded on the freshly laid eggs of stem borer obtained by artificially releasing the adults of C. partellus on maize cultivars, HQPM1 and PMH1, at 12 days after germination. There was no egg parasitism recorded during Kharif 2013 and 2014, whereas 5.6 percent egg-mass parasitism by Trichogramma sp. was recorded during Kharif, 2015. The larval parasitoids were monitored by artificially infesting the maize plants with neonates of laboratory reared C. partellus. The larvae were allowed to develop on maize plants under field conditions for 20 days. The plants showing stem borer damage were cut and brought to the laboratory. The larvae collected from infested maize plants were reared in the laboratory. The maggots of C. flavipes recovered from parasitized larvae ranged from 29-100, 41-50 and 20-80 percent during Kharif 2013, 2014 and 2015, respectively. The result of this study indicated that parasitism by Cotesia was influenced by age of plants damaged by C. partellus. The young maize plants seemed to be more attractive to the foraging of Cotesia and more stem borer larvae were parasitized on these plants as the maximum (58 percent) parasitism was observed at 40-day-old crop. The parasitoid was found to be active on maize from 40-60 days after germination and the incidence decreased thereafter. Insecticides should not be used during this period. The current studies also revealed that host densities had no significant effect on percentage parasitism by Cotesia.
Keywords
Biocontrol, Chilo partellus, Cotesia, Maize, Trichogramma.Full Text
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