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The mango bud Aceria mangiferae Sayed and the mango rust mite Metaculus mangiferae (Attiah) were studied for two years in an abandoned mango orchard in Egypt. The eriophyid mites were fed upon by two predatory phytoseiid mites Typhlodromus mangiferus Zaher and El-Borolossy and Typhlodromips swirskii (Athias-Henriot). Population abundance of the eriophyid mango prey were affected by climatic conditions, predation, shady and sunny zones and vertical distribution. A control measure of one winter acaricides treatment, applied after budding, seemed to be the most successful management of the harmful mites. Higher temperature enhanced development of A. mangiferae and M. mangiferae. Some of the life table parameters varied greatly, especially at 25°C and 60 % RH and 35°C and 50 % RH. Field and laboratory studies indicated that viviparity is a typical character in the reproduction of M. mangiferae.

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Development, survival and reproduction of the generalist predatory mites, Amblyseius largoensis (Muma), Neoseiulus barkeri (Hughes), Typhlodromips swirskii (Athias-Henriot), Proprioseiopsis kadii (El-Halawany and Abdel-Samad) and Cydnosus negevi (Swirski and Amitai) were assessed when fed on eggs of Bactrocera zonata (Saunders) (Diptera: Tephritidae) as a factitious food. For N. barkeri and P. kadii, the development was faster, while the reproduction was higher in N. barkeri and A. largoensis than for P. kadii. Survival of immatures of T. swirskii and C. negevi was low on eggs of B. zonata and all failed to develop beyond the protonymphal stage.A total of 35.4, 31.2 and 19.6 eggs per female, respectively, were obtained when N. barkeri, A. largoensis and P. kadii were fed B. zonata eggs. A diet of the peach fruit fly eggs provided the longest female longevity and highest mean total fecundity, which resulted in the highest net reproductive rate (Ro=34.61 and 32.78) and doubling time (DT=1.53 and 1.60) for N. barkeri and A. largoensis, respectively.

To cite this article: Badawi A. Abou-Awad , Abdel-Sattar M. Metwally & Mahmoud M. Al-Azzazy (2010) Effect of different eriophyid and tetranychid mango mite species on development, longevity, fecundity and predation of Typhlodromus mangiferus Zaher and El-Brolossy (Acari:Effects on development, longevity, fecundity and predation of the predatory phytoseiid mite Typhlodromus mangiferus Zaher and El-Brolossy were studied in the laboratory at different temperatures and relative humidities using four prey mite species: the motile stages of the eriophyid mango bud mite Aceria mangiferae Sayed, the eriophyid leaf coating and webbing mite Cisaberoptus kenyae Keifer, the eriophyid mango rust mite Metaculus mangiferae (Attiah) and nymphs of the tetranychid mango red mite Oligonychus mangiferus (Rahman and Sabra). The increase of different temperatures and decrease of relative humidities from 258C and 60% to 308C and 55% and 358C and 50% shortened development and increased reproduction and prey consumption. The developmental durations were almost similar when the predator was fed on eriophyids compared to that on tetranychid. The maximum reproduction (2.70, 2.08, 1.97 and 1.66 eggs/ , /day) was recorded at the highest temperature and the lowest relative humidity, while the minimum reproduction (1.7, 1.54, 1.53, and 1.06 eggs/ , /day) was noted at the lowest temperature and highest relative humidity with all mango prey species. Life table parameters indicated that feeding of T. mangiferus on A. mangiferae led to the highest reproduction rate (rm ¼ 0.204 and 0.139 females/female/day), while feeding on O. mangiferus gave the lowest reproduction rate (rm ¼ 0.137 and 0.116) at 358C and 50% relative humidity and 258C and 60% relative humidity, respectively. T. mangiferus seems to be a voracious predator of both mango eriophyid and tetranychid mites. The adult female daily consumed about 127 A. mangiferae, 97 C. kenyae, 86 M. mangiferae, and 18 O. mangiferus at 358C and 50% relative humidity, while it devoured only 99.81, 86, 81, and 15 individuals, respectively at 258C and 60% relative humidity. The present study revealed that each injurious mite is thought to be profitable prey species to T. mangiferus as a facultative predator.