Biology of Euseius scutalis (Acari: Phytoseiidae) on Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae) at Different Temperatures
Abbassy, M., Hendy, H., Mowafi, M., Nawar, M. (2012). Biology of Euseius scutalis (Acari: Phytoseiidae) on Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae) at Different Temperatures. EKB Journal Management System, 6(1), 15-19. doi: 10.21608/ajesa.2012.163618
M. R. Abbassy; H. H. Hendy; M. H. Mowafi; M. A. Nawar. "Biology of Euseius scutalis (Acari: Phytoseiidae) on Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae) at Different Temperatures". EKB Journal Management System, 6, 1, 2012, 15-19. doi: 10.21608/ajesa.2012.163618
Abbassy, M., Hendy, H., Mowafi, M., Nawar, M. (2012). 'Biology of Euseius scutalis (Acari: Phytoseiidae) on Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae) at Different Temperatures', EKB Journal Management System, 6(1), pp. 15-19. doi: 10.21608/ajesa.2012.163618
Abbassy, M., Hendy, H., Mowafi, M., Nawar, M. Biology of Euseius scutalis (Acari: Phytoseiidae) on Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae) at Different Temperatures. EKB Journal Management System, 2012; 6(1): 15-19. doi: 10.21608/ajesa.2012.163618

Biology of Euseius scutalis (Acari: Phytoseiidae) on Tetranychus urticae and Panonychus ulmi (Acari: Tetranychidae) at Different Temperatures

Acarines: Journal of the Egyptian Society of Acarology
Article 4, Volume 6, Issue 1, 2012, Page 15-19  XML PDF (3.5 MB)
Document Type: Original research articles
DOI: 10.21608/ajesa.2012.163618
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Authors
M. R. Abbassy1; H. H. Hendy2; M. H. Mowafi3; M. A. Nawar2
1zoology and Nematology Department, Faculty of Agriculture. Al-Azhar University, Cairo. Egypt.
2Plant Protection Department, Nematology Unit, Desert Research Center, Cairo, Egypt
3zoology and Nematology Department, Faculty of Agriculture. Al-Azhar University, Cairo. Egypt
Abstract
This study was conducted to determine the effect of different temperatures and prey type on the biology of Euseius scutalis Athias-Henriot (Acari: Phytoseiidae) fed on Tetranychus urticae Koch and Panonychus ulmi (Koch) (Acari: Tetranychidae) at 20, 25 and 30°C. The incubation period of E. scutalis was shortened with increasing temperature. The mean duration of immature stages was 10.3, 12.7; 7.0, 9.8 and 4.1, 5.7 days when the mite females fed on T. urticae and P. ulmi at 20,25 and 30°C, respectively. The life cycle duration was 14.0, 15.5; 9.1, 12.4 and 5.6, 7.9 days when the females were fed on the aforementioned conditions, respectively. Average female longevity on T. urticae and P. ulmi was 27.7& 31.9 days at 20°C, followed by 22.4& 25.7 days at 25°C and 15.7& 20.4 days at 30°C, respectively. The maximum average fecundity (44.2 eggs/female) was observed at 25°C when females fed on T. urticae compared with 35.6 eggs/female on P. ulmi. Obtained relative values for males were generally less than those of females. Effect of temperature on obtained biological values expressed as rates (1/duration) between main aspects and tested temperatures was significant. Obtained R2 values ranged between 0.90 and 0.655 with P < 0.001. It was concluded that T. urticae was preferred prey than P. ulmi and 30°C was the best for individual developmental rate while 25°C was the best for most fecundity regardless tested prey.
Keywords
Biology; Euseius scuta1is; Phytoseiidae; Temperature; Tetranychidae
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