Safety and Acquisition Potential of Metarhizium anisopliae in Entomovectoring With Bumble Bees, Bombus terrestris
Authors: Smagghe, Guy; De Meyer, Laurens; Meeus, Ivan; Mommaerts, Veerle
Source: Journal of Economic Entomology, Volume 106, Number 1, Pages 1-523 , pp. 277-282(6)
Publisher: Entomological Society of America
Abstract:In the context of integrated pest management with biological control and reduced pesticide use, dissemination of entomopathogenic fungi with insects has the potency to protect crops and specifically their flowers against pests and diseases. But before implementation of such entomovectoring system, a measurement of risks of the microbial biocontrol agent toward the vectoring insect is crucial. The essential contributions of this project are that 1) exposure of bumble bees, Bombus terrestris (L.) to powder containing 107 spores of the commercial biocontrol agent Metarhizium anisopliae strain F52 (Bio1020) per gram, was safe; and 2) that when bumble bees had walked through this spore concentration (107 spores per gram) in a dispenser, their body carried 9.3 ± 1 × 106 spores/bumble bee, and this was still 2.6 106 spores after a flight of 60 s, representing the average time to fly from the dispenser to the crop flowers. 3) In contrast, a 100-fold higher spore concentration (109 spores per gram powder) was highly toxic and the acquisition on the bumble bee body was only 2.5 times higher. Based on these data, future studies can start investigating the protection efficacy of this entomovector system with M. anisopliae and bumble bees without harming the vector and with a loading of the vector considered enough to obtain a good inoculation into and protection of the flowers.
Document Type: Research Article
Publication date: February 1, 2013
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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