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Studies on the predation efficiency ofAgistemus exsertus Gonzalez (Acarina, Stigmaeidae) on the eriophyid miteAculops lycopersici (Massee)

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Abstract

The predacious miteAgistemus exsertus Gonzalez was reared in the laboratory on the eriophyid miteAculops lycopersici (Massee) for studying the development, fecundity and predation efficiency.

At 30°C and R.H. 75% the duration of the predator egg incubation, immature stages, life cycle, oviposition and longevity of the adult female was 0.92, 2.10, 3.02, 4.89 and 7.20 days respectively in average.

The consumption by one adult female ofA. exsertus per day on the different stages of the eriophyid miteA. lycopersici was 60.3 eggs and 45.3 immature and mature stages.

Zusammenfassung

Zwecks Untersuchung der Entwicklung, Vermehrung und räuberischer Effizienz wurde die räuberische MilbeAgistemus exsertus im Labor unter Fütterung mit der GallmilbeAculops lycopersici aufgezogen.

Bei 30°C und 75% LF dauerten die Eireifung, die Entwicklung der unreifen Stadien, der Lebenszyklus, die Eiablage und die Lebensdauer der Weibchen jeweils im Mittel 0,92–2,10–3,02–4,89 und 7,20 Tage.

Der Verzehr eines adulten Weibchens vonA. exsertus pro Tag an Stadien der Beute-MilbeA. lycopersici betrug im Mittel 60,3 Eier sowie 45 unreife und reife Stadien.

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Literature cited

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  1. Plant Prot. Dept., Faculty of Agric., Menoufia Univ., Shebin El-Kom, Egypt

    A. A. Osman & A. M. Zaki

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  1. A. A. Osman
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  2. A. M. Zaki
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Osman, A.A., Zaki, A.M. Studies on the predation efficiency ofAgistemus exsertus Gonzalez (Acarina, Stigmaeidae) on the eriophyid miteAculops lycopersici (Massee). Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 59, 135–136 (1986). https://doi.org/10.1007/BF01903320

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  • DOI: https://doi.org/10.1007/BF01903320

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