Semiochemical-Baited Autodissemination Device for Managing BFT on Cowpea

Mfuti, David K.; Subramanian, Sevgan; Niassy, Saliou; Plessis, Hannalene du; Ekesi, Sunday; Maniania, Nguya K.

doi:10.1007/978-3-030-41083-4_20

Cited by 1 publication

(4 citation statements)

References 26 publications

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“…However, in all autoinoculation devices used, at least 86% of M. anisopliae conidia remained viable for 12 days post-exposure. Mfuti et al [24] reported >45% conidial viability for 12-15 days post-exposure in an autoinoculation device where the spores were directly exposed to methyl anthranilate or spatially separated, in the case of Lurem-TR. In all cases, either conidial spores of the fungus were well protected from the environmental stressors or the attractants were either compatible with the fungus or they were spatially separated.…”

Section: Discussionmentioning

confidence: 99%

“…A commercially produced thrips attractant Lurem-TR, with the active ingredient methyl-isonicotinate (MI), was included in this study as a positive check because of its antifungal effect [20,24]. Lurem-TR was previously reported to be effective in monitoring thrips populations [25][26][27].…”

Section: Pheromones and Attractants Usedmentioning

confidence: 99%

“…Effect of Major Compound of M. sjostedti Aggregation Pheromone on M. anisopliae Persistence in an Autoinoculation Device A semi-field experiment using an autoinoculation device was conducted at icipe Duduville to assess the effect of 30 µg dose of the major compound of the M. sjostedti aggregation pheromone on M. anisopliae persistence. The autoinoculation device used in this experiment was blue as described by Mfuti et al [24]. The blue trap (16 cm diameter × 16 cm high) was perforated with six entry/exit holes (5 cm diameter) right in the middle of the bottle, at alternate positions.…”

Section: Attraction Of M Sjostedti To the Major Compound Of Its Aggregation Pheromonementioning

confidence: 99%

“…A septum with 30 µg of (R)-lavandulyl 3-methylbutanoate (major compound of M. sjostedti aggregation pheromone) was placed in two set-ups in the autoinoculation device (1) inside the inner cylindrical bottle in direct exposure with conidial spores (without spatial separation), (2) inside a small container (6.5 cm diameter × 12 cm high) fixed just above the device spatially separated from the spores [24]. The small container was perforated with six holes (0.7 cm diameter) to allow volatiles to be released.…”

Section: Attraction Of M Sjostedti To the Major Compound Of Its Aggregation Pheromonementioning

confidence: 99%

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Exploiting Thrips Aggregation Pheromones to Develop a Lure-and-Kill Strategy for the Management of the Bean Flower Thrips

et al. 2021

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The potential of semiochemicals to lure insect pests to a trap where they can be killed with biopesticides has been demonstrated as an eco-friendly pest management alternative. In this study, we tested two recently characterized male-produced aggregation pheromones of the bean flower thrips Megalurothrips sjostedti (Trybom), namely (R)-lavandulyl 3-methylbutanoate (major) and (R)-lavandulol (minor), for their field efficacy. Moreover, compatibility of these pheromones and two other thrips attractants, Lurem-TR and neryl (S)-2-methylbutanoate, with the entomopathogenic fungus (EPF) Metarhizium anisopliae ICIPE 69 has been determined. Our study revealed that the M. sjostedti aggregation pheromones have dose-dependent antifungal effects on the EPF viability, but showed no fungistatic effect at a field-realistic dose for attraction of thrips. (R)-lavandulyl 3-methylbutanoate had similar antifungal effects as neryl (S)-2-methylbutanoate 8 days after exposure; whereas, Lurem-TR had a stronger antifungal effect than other thrips attractants. In the semi-field experiments, all autoinoculation devices maintained at least 86% viability of M. anisopliae conidia after 12 days of exposure. Field trials demonstrated for the first time that (R)-lavandulyl 3-methylbutanoate increases trap catches. Our findings pave a way for designing a lure-and-kill thrips management strategy to control bean flower thrips using autoinoculation devices or spot spray application.

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Section: Discussionmentioning

confidence: 99%