Population studies on various coccinellid beetles from different crop ecosystems of Pantnagar, UttarakhandPantnagar Journal of Research, Volume - 20, Issue - 1 ( January-April. 2022)
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The study on the population of different predatory coccinellid beetles was carried out in three locations of Pantnagar. The predatory beetles were surveyed periodically from November, 2020 to February, 2021. A total of 10 species of predatory coccinellid beetles were observed from different crops of the region. Out of these recorded coccinellids, 9 species viz., Anegleis cardoni (Weise), Cheilomenes sexmaculata (Fabricius), Coccinella septempunctata (Linnaeus), Coccinella transversalis (Fabricius), Harmonia dimidita (Fabricius), Propylea dissecta (Mulsant), Micraspis univittata (Hope), Micraspis discolor (Fabricius) and Harmonia variegate (Fabricius) were identified under subfamily Coccinellinae, while the one species i.e., Brumoides suturalis (Fab.) belonged to subfamily Chilocorinae. Different field crops (Wheat, Rice, Chickpea, Mustard, Pigeon pea and Cotton), vegetable crops (Potato, Brinjal and Cabbage) and floricultural crops (Rose and Chrysanthemum) were observed during the period for occurrence of coccinellid beetles. Among all the crops, a maximum of six species of coccinellids were recorded in chrysanthemum crop followed by wheat (5 spp.), brinjal, potato, mustard (4 spp. respectively), pigeon pea, cotton (3 sps. respectively), chickpea, rose, cabbage (2 sps. respectively) and rice (1 sps.). Among all the species C. septempunctata, C. sexmaculata, and C. transversalis were found in all the cropping seasons of Pantnagar. Hence, due to their wide diversity, these predatory beetles could be utilized in an effective IPM module for the management of sucking pests in different crops.
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