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Visual, vibratory, and olfactory cues affect interactions between the red spider mite Tetranychus evansi and its predator Phytoseiulus longipes

Azandémè-Hounmalon Yeyinou Ginette, Torto Baldwin, Fiaboe Komi K.M., Subramanian Sevgan, Kreiter Serge, Martin Thibaud. 2016. Visual, vibratory, and olfactory cues affect interactions between the red spider mite Tetranychus evansi and its predator Phytoseiulus longipes. Journal of Pest Science, 89 (1) : pp. 137-152.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Outlier, Sujet : ENTOMOLOGY

Abstract : Phytoseiulus longipes Evans (Mesostigmata: Phytoseiidae) is an exotic predator widely used in biological control programs for the red spider mite Tetranychus evansi Baker & Pritchard (Acari: Tetranychidae) in East Africa. However, little is known about the cues mediating this prey/predator interaction. Here, we performed behavioral assays to test the involvement of visual, vibratory, and olfactory cues using a combination of dead/living insects enclosed in either perforated or non-perforated transparent/ opaque capsules. We monitored insect responses with a video tracking system and analyzed the data with Ethovision software. Our results showed avoidance behavior of T. evansi in the presence of live P. longipes through visual, vibratory, and olfactory cues. P. longipes was attracted by vibratory and olfactory cues emitted by T. evansi. The composition of volatiles from T. evansi was identified by GC/MS as methyl salicylate (MeSA), linalool, bcaryophyllene, octanoic acid, decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, and octadecanoic acid. Our behavioral assays with predatory mites in a Y-tube olfactometer revealed that among the identified volatiles, only MeSA, linalool, and MeSA ? linalool attracted P. longipes. The implications of these findings for the control of T. evansi are discussed.

Mots-clés Agrovoc : Tetranychus, Phytoseiulus, Agent de lutte biologique, Comportement animal, Lutte biologique, Interactions biologiques, Gestion intégrée des ravageurs, Éthologie, Écologie chimique, Salicylate, Linalool, Solanum lycopersicum

Mots-clés géographiques Agrovoc : Kenya

Mots-clés complémentaires : Tetranychus evansi, Phytoseiulus longipes

Mots-clés libres : Ethology, Chemical ecology, Tetranychidae, Phytoseiidae, Methyl salicylate, Linalool, Tomato

Classification Agris : H10 - Pests of plants

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Azandémè-Hounmalon Yeyinou Ginette, CIRAD-PERSYST-UPR HortSys (FRA)
  • Torto Baldwin, ICIPE (KEN)
  • Fiaboe Komi K.M., ICIPE (KEN)
  • Subramanian Sevgan, ICIPE (KEN)
  • Kreiter Serge, Montpellier SupAgro (FRA)
  • Martin Thibaud, CIRAD-PERSYST-UPR HortSys (KEN)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/577052/)

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