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5 November 2018 The entomopathogenic fungus Beauveria bassiana used as granuleshas no impact on the soil-dwelling predatory mite Stratiolaelaps scimitus
Weinan Sun, Shovon Chandra Sarkar, Xuenong Xu, Zhongren Lei, Shengyong Wu, Ruixia Meng
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Abstract

Frankliniella occidentalis (Pergande) is an economically important pest worldwide and has demonstrated a particularly difficult to manage. Controlling soil-pupating thrips is a promising strategy for controlling F. occidentalis. Beauveria bassiana granules and soil inhabiting predatory mite Stratiolaelaps scimitus have been proposed as alternative control agents. This study evaluated the effect of the B. bassiana conidia on the survival, immature development, longevity, reproduction of S. scimitus by laboratory bioassays. The effect of B. bassianaused as granules on survival of S. scimitus was also assessed under potted condition. When B. bassiana was sprayed directly on each immature stage of S. scimitus at a concentration of 1×107 ml-1 conidia, their survival rates and developmental times were not affected. Direct spray of B. bassiana on female S. scimitus did not affect their reproduction and longevity. The potted test showed that B. bassiana used as granules has no impact on the density of S. scimitus. Our study suggested that using B. bassiana granules is compatible with release of S. scimitus in soil, and their combined use may be an alternative to traditional F. occidentalis management.

© Systematic & Applied Acarology Society
Weinan Sun, Shovon Chandra Sarkar, Xuenong Xu, Zhongren Lei, Shengyong Wu, and Ruixia Meng "The entomopathogenic fungus Beauveria bassiana used as granuleshas no impact on the soil-dwelling predatory mite Stratiolaelaps scimitus," Systematic and Applied Acarology 23(11), 2165-2172, (5 November 2018). https://doi.org/10.11158/saa.23.11.9
Received: 30 August 2018; Accepted: 25 October 2018; Published: 5 November 2018
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KEYWORDS
biological control
Compatibility
Fungal granules
Soil-inhabiting predators
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