Relationship between the population density of phytophagous and predaceous mites associated with three mango varieties at Assiut and Sohag governorates [electronic resource]

By: Contributor(s): Language: English Summary language: Arabic Description: 62-78 pOther title:
  • العلاقة بین الكثافة العددیة للأكاروسات نباتیة التغذیة والأكاروسات المفترسة المصاحبة لثلاثة اصناف من أشجار المانجو في محافظتي أسیوط وسوهاج [Added title page title]
Uniform titles:
  • Assiut journal of agricultural sciences, 2020 v. 51 (3) [electronic resource].
Subject(s): Online resources: In: Assiut Journal of Agricultural Sciences 2020.v.51(3)Summary: The population densities of phytophagous and predaceous mites inhabiting leaves and green buds of three mango (Mangifera indica L.) varieties (Baladi, Hind and Taimour) were studied from April 2013 to March 2015. The experiments were carried out at four places at Assiut and Sohag governorates to determine the relationship between phytophagous mites and predaceous mites. Phytophagous mites Oligonychus mangiferus (Tetranychidae) and Cisaberoptus kenyae (Eriophyidae) inhabiting leaves of Baladi varieties were found with high density at Assiut and Sohag governorates, and they had two peaks during the year, the highest one was recorded in December month with mean numbers 894.00 individuals/25leaves in first year and 1004.25 individuals/25leaves in second year at Assiut governorate. During the same month, the peak recorded mean numbers was 513.75 individuals/ 25leaves at the first year, and 533.50 individuals/25leaves for the second year at Sohag governorate. Also phytophagous mites inhabiting leaves of the two varieties (Hind and Taimour) had two peaks, the first one recorded in July and the second recoded in January. While the peak of July month was the highest one it recorded average number 568.50 & 657.00 individual/25leaves in first and second years respectively for Hindi variety at Sohag, and 282.75 and 287.50 individual/25leaves in the two years respectively for Hindi variety at Assiut. The highest peak of Taimour variety was in July month with mean 577.50 and 670.75 individual at Sohag, while was in Jun at Assiut with mean 297.00 and 312 individual/25leaves during the first and second years, respectively. Predaceous mites (Amblyseius cucumeris and Typhlodromus mangiferus) associated with leaves of mango varieties during the two year were found with few number on leaves of mango varieties, and had a one peak in the year. The highest peak was recorded during June month with average numbers 69.25 individual in the first year (2013/2014) and 74.00 individuals/25leaves in the second year (2014/2015) on leaves of Hindi variety at Assiut governorate. Phytophagous mites Aceria mangiferae and Metaculus mangiferae (Eriophyidae) inhabiting terminal and lateral buds of three mango verities were found with high numbers in the buds. Phytophagous mites inhabiting buds often had three peaks at the year, in May, August and November months. The highest peak was recorded on buds of Taimour variety with mean numbers 731.50 and 786.75 individuals/5 terminal buds and 458.75 and 384.00 individuals/5 lateral buds at May month in the first and second years respectively, at Sohag governorate. Predaceous mites Amblyseius cucumeris and Typhlodromus magnifiers (Phytoseiidae) associated with Buds of mango varieties were found with slightly numbers during warm months, but didn't recorded any number during December and January months. Predaceous mites inhabiting buds had one annual peak during July month. The highest peak was recorded on buds of Taimour variety with average 7.25 and 8.00 individual/5 terminal buds, and 7.00 and 7.50 individuals/5 lateral buds in the first and second years respectively, at Assiut governorate. Statistically, there was non-significant positive correlation between the population density of phytophagous mites and numbers of predatory mites during the two years, except some cases were significant positive correlation during the two years with Oligonychus mangiferus mite. Keywords: Phytoseiidae, Tetranychidae, Eriophyidae, Population density, phytophagous mites
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The population densities of phytophagous and predaceous mites inhabiting leaves and green buds of three mango (Mangifera indica L.) varieties (Baladi, Hind and Taimour) were studied from April 2013 to March 2015. The experiments were carried out at four places at Assiut and Sohag governorates to determine the relationship between phytophagous mites and predaceous mites. Phytophagous mites
Oligonychus mangiferus (Tetranychidae) and Cisaberoptus kenyae (Eriophyidae) inhabiting leaves of Baladi varieties were found with high density at Assiut and Sohag governorates, and they had two peaks during the year, the highest one was recorded in December month with mean numbers 894.00 individuals/25leaves in first year and 1004.25 individuals/25leaves in second year at Assiut governorate.
During the same month, the peak recorded mean numbers was 513.75 individuals/ 25leaves at the first year, and 533.50 individuals/25leaves for the second year at Sohag governorate. Also phytophagous mites inhabiting leaves of the two varieties (Hind and Taimour) had two peaks, the first one recorded in July and the second recoded in January. While the peak of July month was the highest one it recorded average number 568.50 & 657.00 individual/25leaves in first and second years respectively for Hindi variety at Sohag, and 282.75 and 287.50 individual/25leaves in the two years respectively for Hindi variety at Assiut. The highest peak of Taimour variety was in July month with mean 577.50 and 670.75 individual at Sohag, while was in Jun at Assiut with mean 297.00 and 312 individual/25leaves during the first and second years, respectively. Predaceous mites (Amblyseius cucumeris and Typhlodromus mangiferus) associated with leaves of mango varieties during the two year were found with few number on leaves of mango varieties, and had a one peak in the year. The highest peak was recorded during June month with average numbers 69.25 individual in the first year (2013/2014) and 74.00 individuals/25leaves in the second year (2014/2015) on leaves of Hindi variety at Assiut governorate. Phytophagous mites Aceria mangiferae and Metaculus mangiferae (Eriophyidae) inhabiting terminal and lateral buds of three mango verities were found with high numbers in the buds. Phytophagous mites inhabiting buds often had three peaks at the year, in May, August and November months. The highest peak was recorded on buds of Taimour
variety with mean numbers 731.50 and 786.75 individuals/5 terminal buds and 458.75 and 384.00 individuals/5 lateral buds at May month in the first and second years respectively, at Sohag governorate. Predaceous mites Amblyseius cucumeris and Typhlodromus magnifiers (Phytoseiidae) associated with Buds of mango varieties were found with slightly numbers during warm months, but didn't recorded any
number during December and January months. Predaceous mites inhabiting buds had one annual peak during July month. The highest peak was recorded on buds of Taimour variety with average 7.25 and 8.00 individual/5 terminal buds, and 7.00 and 7.50 individuals/5 lateral buds in the first and second years respectively, at Assiut governorate. Statistically, there was non-significant positive correlation between the population density of phytophagous mites and numbers of predatory mites during the two years, except some cases were significant positive correlation during the two years with Oligonychus mangiferus mite.
Keywords: Phytoseiidae, Tetranychidae, Eriophyidae, Population density, phytophagous
mites

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