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Diraviam, J.
- Laboratory Studies on the Host Range of Curinus coeruleus Mulsant, an Exotic Predator of the Subabul Psyllid
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Authors
Affiliations
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
2 Department of Entomology, University of Agricultural Sciences, Bangalore - 560 065, IN
1 Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
2 Department of Entomology, University of Agricultural Sciences, Bangalore - 560 065, IN
Source
Journal of Biological Control, Vol 6, No 1 (1992), Pagination: 42-43Abstract
The ladybird beetle Curinus coeruleus Mulsant was introduced into India from Thailand during October 1988 for the control of subabul psyllid Heteropsylla cubana Crawford (Jalali and Singh, 1989). This predator is a voracious feeder of the psyllids (Nakahara et al., 1987). Apart from H.cubana, the beetle is also known to feed on Nipaecoccus nipae (Maskell) (Nakahara et al., 1987), Planococcus citri (Risso), Coccus viridis (Green) (Wagiman et al., 1990), Chrysomphalus aonidum (Linnaeus), Aphis nerii Boyer de Fonscolombe, Aleurodicus dispersus Russel (Funasaki et al., 1988) and Aphis gossypii Glover (Napompeth and Maneeratana, 1990) in other countries. Hence a study was conducted in the laboratory to find out the host range of C. coeruleus in India.Keywords
Curinus coeruleus, Host Range, Heteropsylla cubana, Oxyrhachis tarandus.Full Text
- Population Dynamics of the Introduced Ladybird Beetle, Curinus coeruleus Mulsant in Relation to its Psyllid Prey Heteropsylla cubana Crawford in Bangalore
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Authors
Affiliations
1 Department of Agricultural Entomology, University of Agricultural Sciences, Bangalore-560 065, IN
1 Department of Agricultural Entomology, University of Agricultural Sciences, Bangalore-560 065, IN
Source
Journal of Biological Control, Vol 4, No 2 (1990), Pagination: 99-104Abstract
Curinus coeruleus Mulsant, a ladybird beetle has been Introduced Into India for the control of the subabul psyllid Heteropsylla cubana Crawford. It has established Itself In the subabul fields of the University or Agricultural Sciences, Bangalore. In the present Investigation, population dynamics of the predator and the prey along with weather parameters were studied. The study revealed the dependence of H. cubana on weather parameters partlcularly rainfall. The population or psyllids gradually declined during summer (May) which was followed by the decline or predator population. Build up of the psyllid population started with the onset of rains, which favoured emergence of new flush of subabul during the third week or May. C. coeruleus populatlon also gradually Increased after the psyllid build up. Partial regression coefficient revealed a strong negative correlation between adult predators and wind speed. Predator adult population had a significant positive relationship with maximum temperature (r = 0.6958), minimum temperature (r = 0.5378)and hours of sunshine (r = 0.6273) but significant negative, relationship with relative humidity (r = -0.7352), psyllid nymphs (r = -0.4250) and wind speed (r = -0.9093). Multiple regression equation was also fitted to predict the predator adult population.Keywords
Population Dynamics, Curinus coeruleus, Heteropsylla cubana, Subabul.Full Text
- Screening alcohol-preserved samples for cassava mealybug, Phenacoccus manihoti Matile-Ferrero (Hemiptera: Pseudococcidae), a recent invasive introduction to India
Abstract Views :203 |
PDF Views:90
Authors
Affiliations
1 ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchirappalli 620 102, IN
2 ICAR-National Bureau of Agricultural Insect Resources, PB No 2491, HA Farm Post, Bellary Road, Hebbal, Bengaluru 560 024, IN
3 Krishi Vigyan Kendra, Pulutheri, R.T. Malai Post, Kulithalai, Karur district 621 313, IN
1 ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchirappalli 620 102, IN
2 ICAR-National Bureau of Agricultural Insect Resources, PB No 2491, HA Farm Post, Bellary Road, Hebbal, Bengaluru 560 024, IN
3 Krishi Vigyan Kendra, Pulutheri, R.T. Malai Post, Kulithalai, Karur district 621 313, IN
Source
Current Science, Vol 122, No 8 (2022), Pagination: 981-984Abstract
Phenacoccus manihoti Matile-Ferrero (Hemiptera: Coccomorpha: Pseudococcidae), one of the most serious pests of cassava worldwide, was recently introduced to India. Surveillance, early detection and mapping of its distribution in cassava-growing areas are essential to prevent it from spreading further. Several species of mealybug are known to infest cassava in India; their authoritative identification normally requires preparation of slide mounts, which is a highly skilled and time-consuming process. A simple method is described here for screening alcohol-preserved samples of mixed-species infestations for cassava mealybug.Keywords
Alcohol-preserved samples, cassava mealybug, invasive pests, Sternorrhyncha.Full Text
References
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- Joshi, S., Pai, S. G., Deepthy, K. B., Ballal, C. R. and Watson, G., The cassava mealybug, Phenacoccus manihoti Matile-Ferrero (Hemiptera: Coccomorpha: Pseudococcidae) arrives in India. Zootaxa, 2020, 4772(1), 191–194.
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