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1 April 2000 Effects of the Chitin Synthesis Inhibitor Buprofezin on Survival and Development of Immatures of Chrysoperla rufilabris (Neuroptera: Chrysopidae)
Tong-Xian Liu, Tian-Ye Chen
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Abstract

Effects of buprofezin (Applaud), a chitin synthesis inhibitor, on survival and development of eggs, three instars, and pupae of Chrysoperla rufilabris (Burmeister) were determined in the laboratory. Buprofezin at three tested concentrations (100, 500, and 1,000 mg [AI]/liter) did not affect the viability and development of eggs when the eggs were treated, or third instars and pupae when those stages were treated. Although the degree of effects by buprofezin on larvae varied with instar, buprofezin at the higher concentrations (500 and 1,000 mg [AI]/liter) reduced survival rates 17–47% and prolonged the overall development from first instars to adult emergence by 2 or 3 d when first instars were treated, indicating that the first instar is the most vulnerable stage. When second instars were treated, the survival of C. rufilabris from second instars to pupae was not significantly affected. However, the developmental time from second instar to adult emergence was longer in the treatments with the highest concentration (1,000 mg [AI]/liter) than that with the lowest concentration (100 mg [AI]/liter). The compatibility of buprofezin with natural enemies in integrated pest management programs is discussed.

Tong-Xian Liu and Tian-Ye Chen "Effects of the Chitin Synthesis Inhibitor Buprofezin on Survival and Development of Immatures of Chrysoperla rufilabris (Neuroptera: Chrysopidae)," Journal of Economic Entomology 93(2), 234-239, (1 April 2000). https://doi.org/10.1603/0022-0493-93.2.234
Received: 26 July 1999; Accepted: 1 December 1999; Published: 1 April 2000
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KEYWORDS
chitin synthesis inhibitors
Chrysoperla rufilabris
insect growth regulators
natural enemy
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