Typhlodromips swirskii (Acari: Phytoseiidae): A Predator of Eriophyid and Tetranychid Mango Mites in Egypt | ||||
Acarines: Journal of the Egyptian Society of Acarology | ||||
Article 10, Volume 3, Issue 1, January 2009, Page 59-64 PDF (142.73 K) | ||||
Document Type: Original research articles | ||||
DOI: 10.21608/ajesa.2009.4967 | ||||
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Authors | ||||
B. Abou-Awad1; A. Metwally2; M. Al-Azzazy2 | ||||
1Plant Protection Dept., National Research Center, 12622 Dokki, Cairo, Egypt | ||||
2Agricultural Zoology and Nematology Dept., Faculty of Agric., Al- Azhar Univ., Cairo | ||||
Abstract | ||||
The predacious mite Typhlodromips swirskii (Athias-Henriot) successfully developed to the adult stage when fed on the motile stages of the mango bud mite Aceria mangiferae Sayed, the mango rust mite Metaculus mangiferae (Attiah), the leaf coating mite Cisaberoptus kenyae Keifer and nymphs of the mango red mite Oligonychus mangiferus (Rahman and Sabra) in the laboratory at different temperatures and relative humidities. The increase of temperature degree and decrease relative humidity from 25°C and 60% R.H. to 30°C & 55%R.H. and 35 °C & 50 %R.H. shortened development and increased reproduction and prey consumption. Different eriophyid prey species promoted faster development of the predator compared to feeding on the tetranychid nymphs. The rate of egg laying (2.62, 2.23, 2.35 and 1.83 eggs/♀/day) was recorded at the highest temperatures and lowest R.H., while the minimum reproduction (1.92, 1.72, 1.62 and 1.20 eggs/♀/day) was noted at the lowest temperature and highest R.H. when fed on the four aforementioned prey species, respectively. Life table parameters indicated that feeding T. swirskii on A. mangiferae led to the highest reproduction rate (rm = 0.216 and 0.157 females/female/day), while feeding on O. mangiferus gave the lowest reproduction rate (rm= 0.183 and 0.133) nymphs at 35°C and 50%R.H. and 25°C and 60% R.H., respectively. The adult predatory female consumed an average of 117.8 A. mangiferare, 114.18 C kenyae, 94.4 M. mangiferae motile stages and 14.58 O. mangiferus nymphs at 35°C and 50% R.H./day, while it devoured 102.8, 96.59, 90.44 and 12.35 individuals, respectively at 25°C and 60% R.H. The three eriophyid mango mites, particularly A. mangiferae, proved to be suitable prey for T. swirskii, as a facultative predator, compared to the tetranychid mango mite. | ||||
Keywords | ||||
Typhlodrompis swirskii; Phytoseiidae; Eriophyidae; Tetranychidae | ||||
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