Predatory beetle
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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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The study on seasonal incidence of summer okra as influenced by weather parameters on aphid, lady bird beetle and syrphid fly showed its peak presence during 16th MW and maximum population of chyrsopa during 17th MW, predatory spider during 20th MW. The correlation studies indicated that aphid showed positively significant correlation with bright sunshine and negatively significant correlation with rainy days.
11p kethamoi6 29-06-2020 17 1 Download
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Feeding efficiency of the six species of beetle reared on mustard aphids, Lipaphis erysimi investigated under Departmental Laboratory of Plant Protection, DBS College of Agriculture and Allied Science, Selaqui, Deharadun, Uttrakhand. Coccinella septempuctata was most predominant predatory species on mustard aphid and consumed maximum numbers of aphids throughout the life with different larval stages as well as adult stage where as Illeis cincta consumed minimum aphids throughout the life and was correlated with the life span of the larval stadium.
7p nguathienthan4 18-04-2020 17 1 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 18 1 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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Biology and feeding potential of Coccinella septempunctata was studied in the laboratory condition during 2013 in different months pertaining to different temperature regimes on Cowpea aphid, Aphis craccivora. During the cooler months of January and November, the life stages are prolonged and in the warmer months of March and May the life stages are shorter for the coccinellid. In January, when the mean temperature was 21.7ºC, the total developmental period from egg to adult stage, took 22.4±0.67 days whereas, in May, at 32.7ºC, the total developmental periods was 15.2±0.
6p nguaconbaynhay3 07-02-2020 9 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 29 0 Download
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Calosoma sycophanta L. (Coleoptera: Carabidae) is a voracious predatory beetle that feeds on several important lepidopteran pests. It is mass reared in laboratory breeding and released against forest pests. Any infection in this beetle is undesirable because it impacts production of effective and healthy beetles.
5p danhdanh11 09-01-2019 14 2 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 49 0 Download