Acta Phytopathologica et Entomologica Hungarica (2015) 50, 105-113

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A.M. Metwally, F.M. Momen, A.K. Nasr, A.A. Abdallah, I.M. Ebadah and Kh.M. Saleh (2015)
Prey suitability of Tuta absoluta larvae (Lepidoptera: Gelechiidae) for three predatory phytoseiid mites (Acari: Phytoseiidae) under laboratory conditions
Acta Phytopathologica et Entomologica Hungarica 50 (1), 105-113
Abstract: Tomato crop in the Mediterranean Basin has been recently affected by the exotic pest Tuta absoluta (Meyrick), which is difficult to control due to its high reproduction rate and potential to develop resistance to insecticides. In this paper, the suitability and effectiveness of three predatory phytoseiid mites Cydnoseius negevi (Swirski and Amitai), Neoseiulus barkeri (Hughes) and Amblyseius largoensis (Muma), an indigenous species, were evaluated on larvae of T. absoluta under laboratory conditions. First instar larvae of T. absoluta proved to be possible food source for tested phytoseiid mites under laboratory conditions. Females of C. negevi, A. largoensis and N. barkeri were able to feed and sustain oviposition on unfed, first instar larvae of T. absoluta. A diet of insect larvae provided the shortest oviposition period and adult longevity of C. negevi and A. largoensis, while N. barkeri showed the longest corresponding periods. The total and daily number of insect larvae consumed was significantly higher in N. barkeri than in A. largoensis and C. negevi. Likewise, N. barkeri laid significantly higher number of eggs (23.6 eggs / female) than that deposited by C. negevi and A. largoensis (2.5 and 3.9 eggs / female). The sex ratio of the progeny was female biased and ranged: (females / total=0.62-0.68%) when insect larvae were provided for females of C. negevi, A. largoensis and N. barkeri.
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Link to article at publishers website
Database assignments for author(s): Faten M. Momen

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Tuta absoluta
Neoseiulus barkeri (predator) Tuta absoluta
Cydnoseius negevi (predator) Tuta absoluta
Amblyseius largoensis (predator) Tuta absoluta