Population Dynamics and Feeding Potential of Cheilomenes sexmaculata (F.) (Coleoptera: Coccinellidae) on Certain Citrus Insect Pests

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Authors

  • National Research Centre for Citrus, Amaravati Road, Nagpur 440 010, Maharashtra ,IN
  • National Research Centre for Citrus, Amaravati Road, Nagpur 440 010, Maharashtra ,IN

DOI:

https://doi.org/10.18311/jbc/2012/3519

Keywords:

Cheilomenes sexmaculata, Coccinellidae, Predatory Potential and Citrus Insect Pests.

Abstract

A study was carried out on the population dynamics and predatory potential of Cheilomenes sexmaculata (F.) on various citrus insect pests at National Research Centre for Citrus, Nagpur, during 2006-10. Visual observation of 3-5 minutes/tree during 2006-08 showed that the population of C. sexmaculata was significicantly higher in February (3.5/tree) and January (2.8/tree) than other month. The population of C. sexmaculata was significantly negatively correlated with wind velocity. Predatory potential studies revealed that each larva of C. sexmaculata consumed a total of 186.1 blackfly (Aleurocanthus woglumi Ashby) nymphs; 208.9 psylla (Diaphosis citri Kuwayama) nymphs and 252.8 aphids (Aphis spiraecola Patch) during 2008; a total of 189.0 blackfly nymphs/206.7. citri nymphs and 242.0 aphids during 2009 and a total of 184.8 A. nymphs/ 198.5 psylla nymphs and 260.2 aphids during 2010. Similarly, each adult of C. sexmaculata consumed a total of 540.5 blackfly nymphs: 660.2 psylla nymphs; 720.6 aphids and 210.3 leaf miner (Phyllocnistis citrella Stainton) pupae during 2008; a total of 538.3 blackfly nymphs, 651.8 psylla nymphs, 708.4 aphids and 216.1 leaf miner pupae during 2009 and a total of 519.5 blackfly numphs, 634.1 psylla nymphs, 695.7 aphids and 201.2 leaf miner pupae during preference of C. sexmaculata larvae and adults to A. spiraecola to other insect pests.

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Published

2012-04-14

How to Cite

Rao, C. N., & Shivankar, V. J. (2012). Population Dynamics and Feeding Potential of <I>Cheilomenes sexmaculata</I> (F.) (Coleoptera: Coccinellidae) on Certain Citrus Insect Pests. Journal of Biological Control, 26(1), 14–17. https://doi.org/10.18311/jbc/2012/3519

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