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Chinese Journal Of Biological Control ›› 2020, Vol. 36 ›› Issue (4): 628-631.DOI: 10.16409/j.cnki.2095-039x.2020.04.025

• SCIENTIFIC NOTES • Previous Articles     Next Articles

Predation Capacity of Adonia variegata to Aphis atrata

PAN Hongsheng, LI Haobin, DING Ruifeng, LI Haiqiang, WANG Dongmei, AKEDAN·Wuwaishi, LIU Jian   

  1. Scientific Observing and Experimental Station of Crop Pests in Korla, Ministry of Agriculture and Rural Affairs/Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
  • Received:2019-11-20 Online:2020-08-08 Published:2020-08-07

Abstract: In this study, the predation capacity of ladybeetle Adonia variegate (Goeze) larvae at various instars, female and male adults at different ages on cotton black aphid Aphis atrata Zhang were systematically studied in the laboratory. The results showed that the predation amount of ladybeetle larvae on cotton black aphid increased with increasing larval instar, and the predation amount of 1-4 instar were 17.20 aphids, 50.70 aphids, 121.50 aphids and 153.90 aphids per day, respectively. In addition, the predation amount of ladybeetle adults at different ages on cotton black aphid were firstly increased and then gradually decreased, the peak predation amount was 5 days-old female and male adults (female:145.90 aphids per day, male:157.30 aphids per day). Significant difference were found for the predation amount of ladybeetle adults at different ages within the same gender, and there are significant difference for the predation amount of female and male adult at the same age. These results provide an important theoretical basis for the application of ladybeetles to the control of cotton black aphid.

Key words: Adonia variegate, Aphis atrata, predation capacity, biological control

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