Ladybird beetles
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Cannibalism or intraspecific predation, where one species feeds on individuals of its own species, is a widespread phenomenon in most aphidophagous coccinellids. Laboratory studies were conducted on the cannibalistic behavior of various developmental stages of Coccinella septempunctata L. (Coleoptera: Coccinellidae) in the presence and absence of natural food, Acyrthosiphon pisum (Harris) (Hemiptera: Aphididae). In both the presence and absence of aphids, the eggs and 1st and 2nd instars of C.
7p dolomite36 30-12-2021 11 0 Download
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Ladybird beetles (Coleoptera, Coccinellidae) are highly diverse in their feeding habits. Most of them are specialist feeders, while some can have a broad spectrum of prey. As a representative group of generalists, the tribe Coccinellini includes many aphidophagous species, but members of this tribe also feed on other hemipterous insects including coccids, psyllids and whiteflies.
11p vijeeni2711 24-07-2021 9 0 Download
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The ladybird beetle Cryptolaemus montrouzieri Mulsant, 1853 (Coleoptera, Coccinellidae) is used worldwide as a biological control agent. It is a predator of various mealybug pests, but it also feeds on alternative prey and can be reared on artificial diets.
12p vilichoo2711 23-06-2021 5 2 Download
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During surveying and collecting of predatory ladybird beetle species in Da Lat city, we recorded that Oenopia kirbyi commonly appeared on aphid-infected plants and weeds, but until now there have been almost no detailed studies on this species. With the hope of contributing to research on the use of predatory ladybird beetles in pest control, we studied the morphological and biological characteristics of Oenopia kirbyi in Da Lat city.
9p nguaconbaynhay10 19-02-2021 12 2 Download
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Different natural enemies recorded from aphid colonies on rose included two coccinellid predators (Coccinella septempunctata and Cheilomenes sexmaculata), syrphid fly, spider (Oxyopes sp.) and chrysopid (Chrysoperla carnea). Among these, ladybird beetle, C. septempunctata followed by syrphid fly maggot was found to be the most abundant predator feeding on aphids colony.
5p gaocaolon9 22-12-2020 12 2 Download
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The relative toxicity of different insecticides against adult of Propylea sp. showed that novaluron 10 EC 0.0075 per cent was slightly harmful to adults of Propylea sp. While, other remaining insecticides proved to be harmless to adult viz. thiamethoxam 25 WG 0.005 per cent, acetamiprid 20 SP 0.004 per cent, flonicamid 50 WG 0.0075 per cent, clothianidin 50 WDG 0.003 per cent, diafenthiuron 50 WP 0.04 per cent, imidacloprid 17.8 SL 0.005 per cent, spinosad 45 SC 0.02 per cent. Apart from this, azadirachtin 1500 ppm 0.
5p trinhthamhodang1213 29-05-2020 9 0 Download
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The present investigation on Predator prey relationship in different maize based planting pattern was carried out at Instructional farm and Department of Entomology, Rajasthan College of Agriculture, MPUAT, Udaipur. Maize variety Pratap maize-5 was sown with different intercrops viz., green gram, black gram, cowpea and soyabean in kharif, 2017.
5p caygaocaolon5 27-05-2020 12 0 Download
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The peak population of mustard aphid on yellow sticky traps was recorded with 35.4±2.9 aphids/trap from 7th SW and it was active from 45th SW to 14th SW, where it was on peak with 712.4±16.4 aphids/plant under the field condition from untreated plots at 3rd SW. Coccinella septempunctatas active from 50th SW to 13th SW of the season and peak population noticed from 5th SW with 14±0.4 grubs and adults/plant.
8p nguaconbaynhay5 16-05-2020 16 0 Download
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Studies on predatory potential of larva and adult of H. octomaculata on A. pisum was carried out under laboratory conditions during January 2018 to April 2018.The results showed that the first, second, third and fourth instar larva consumed an average of 15.72 ± 2.66, 25.72 ± 4.79, 53.58 ± 10.93 and 88.94 ± 14.79 aphids, respectively. The total larval consumption was 183.96 ± 17.97 aphids during its total developmental period when reared on A. pisum. The mean daily consumption of first, second, third and fourth instar larva was 12.09 ± 3.03, 14.11 ± 3.36, 21.61 ± 5.60 and 25.38 ± 4.
7p caygaocaolon3 27-02-2020 17 0 Download
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In order to study the effects of repeated use of various insecticides on thrips and their natural enemies viz., Ladybird beetle and Predatory spiders, an experiment was conducted during Kharif, 2018-19at the Experimental farm, Department of Agricultural Entomology, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani. The insecticides selected included those used commonly among the farmers viz., Imidacloprid 17.
13p cothumenhmong3 22-02-2020 17 0 Download
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The effects of temperature on the development and the predatory capacity of Micraspis discolor larvae were studied in laboratory. Two temperature levels 23.50°C and 30.71oC on average, were used to assess the life cycle and developmental stages of the ladybird beetle M. discolor. The life cycle of M. discolor was 27.38 days at 23.50°C and reduced to 19.77 days at 30.71°C, the total larval period was 13.42 and 9.9 days, respectively. The pre-oviposition period of the ladybird beetle M. discolor was 4.95 days at 23.50°C and 5.23 days at 30.71°C.
6p trinhthamhodang 28-10-2019 28 0 Download
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The study of the biology of M. discolor would help to use this insect of proper biological control. So, the present study was undertaken to observe the biology and the effect of temperature to the life cycle and predatory capacity of M. discolor.
6p jangni1 16-04-2018 48 0 Download