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Kalyanasundaram, M.
- Effect of Adult Nutrition on Longevity and Parasitisation Efficiency of Acerophagus papayae Noyes and Schauff (Hymenoptera: Encyrtidae)
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PDF Views:161
Authors
Affiliations
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, IN
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 25, No 4 (2011), Pagination: 316-319Abstract
The role of adult nutrition on longevity, fecundity and male: female ratio was studied in detail for Acerophagus papayae. There was significant difference in the longevity and parasitisation efficiency of the adults fed different diets. Adults of A. papayae fed on 10% and 50% honey lived for 9.00 and 7.33 days and the number of progeny was 50 and 47.8 numbers with female progenies of 41.56 and 36.37 per cent, respectively. The parasitoids fed with yeast extract along with 10% honey and dried grapes extract lived for an average of 6.00 days and 8.00 days and the number of progeny was 51.06 and 54.93 with 38.36 and 37.29 per cent female progenies respectively. The parasitoid fed with fructose lived for 4.00 days and the the number of progeny was 46.6 and percentage of female progenies was 37.16. But, parasitoids fed with water alone lived for 3.33 days and its parasitisation efficiency was 34.6 with 31.35 per cent of female progeny.Keywords
Papaya,Acerophgus papayae, Adult Nutrition, Efficiency of Parasitism.Full Text
References
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- Toxicity of Insecticides to Papaya Mealybug Parasitoid, Acerophagus papayae (Noyes and Schauff) (Hymenoptera: Encyrtidae)
Abstract Views :271 |
PDF Views:150
Authors
Affiliations
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 00, Tamil Nadu, IN
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore 641 00, Tamil Nadu, IN
Source
Journal of Biological Control, Vol 26, No 3 (2012), Pagination: 274–278Abstract
Toxicity of selected insecticides to papaya mealybug parasitoid, Acerophagus papayae (Noyes and Schauff) (Hymenoptera: Encyrtidae) was evaluated at 1, 3, 6 and 24h after treatment (HAT). Results showed that Thiamethoxam, Chlorpyriphos and Dichlorvos showed very high knock-down effect (100 % mortality) of A. papayae adults within 3 HAT. Fish Oil Rosin Soap (FORS) and Neem oil had very less detrimental effect on adult parasitoids by recording very low mortality percentage at 24 HAT. The residual toxicity data revealed that Thiamethoxam was the most persisting insecticide causing 26.67 per cent mortality of A. papayae even after 28 days after treatment (DAT). Neem oil and Fish Oil Rosin Soap became less or non toxic to adults of A. papayae at three DAT.Keywords
Toxicity, Insecticides, Acerophagus papayae.Full Text
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- Efficacy of Nuclear Polyhedrosis Virus Against Spodoptera litura (Fab.) on Tobacco (Nicotiana tabacum L.) in Different Locations of Tamil Nadu, India
Abstract Views :219 |
PDF Views:107
Authors
Affiliations
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
1 Department of Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
Source
Journal of Biological Control, Vol 6, No 1 (1992), Pagination: 22-25Abstract
Field experiments conducted against Spodoptera litura (Fab.) with nuclear polyhedrosls virus (NPV) on tobacco (Nicotiana tabacum L.) in twelve different locations of Tamil Nadu indicated that two rounds of application at 250 larval equivalents (LE)/ha with crude sugar 2.5 kg/ha at 10, days Interval was significantly superior to untreated control in reducing the larval population, irrespective of the locations tested.Keywords
NPV, Spodoptera litura, Tobacco.Full Text