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Abou-Awad, B., Al-Azzazy, M., Afia, S. (2010). EFFECT OF TEMPERATURE AND RELATIVE HUMIDITY ON THE RATE OF DEVELOPMENT, FECUNDITY AND LIFE TABLE PARAMETERS OF THE RED SPIDER MITE Oligonychus mangiferus (RAHMAN AND, SAPRA) (ACARI: TETRANYCHIDAE). Journal of Plant Protection and Pathology, 1(10), 785-790. doi: 10.21608/jppp.2010.86938
B. A. Abou-Awad; M. M. Al-Azzazy; Sahar I. Afia. "EFFECT OF TEMPERATURE AND RELATIVE HUMIDITY ON THE RATE OF DEVELOPMENT, FECUNDITY AND LIFE TABLE PARAMETERS OF THE RED SPIDER MITE Oligonychus mangiferus (RAHMAN AND, SAPRA) (ACARI: TETRANYCHIDAE)". Journal of Plant Protection and Pathology, 1, 10, 2010, 785-790. doi: 10.21608/jppp.2010.86938
Abou-Awad, B., Al-Azzazy, M., Afia, S. (2010). 'EFFECT OF TEMPERATURE AND RELATIVE HUMIDITY ON THE RATE OF DEVELOPMENT, FECUNDITY AND LIFE TABLE PARAMETERS OF THE RED SPIDER MITE Oligonychus mangiferus (RAHMAN AND, SAPRA) (ACARI: TETRANYCHIDAE)', Journal of Plant Protection and Pathology, 1(10), pp. 785-790. doi: 10.21608/jppp.2010.86938
Abou-Awad, B., Al-Azzazy, M., Afia, S. EFFECT OF TEMPERATURE AND RELATIVE HUMIDITY ON THE RATE OF DEVELOPMENT, FECUNDITY AND LIFE TABLE PARAMETERS OF THE RED SPIDER MITE Oligonychus mangiferus (RAHMAN AND, SAPRA) (ACARI: TETRANYCHIDAE). Journal of Plant Protection and Pathology, 2010; 1(10): 785-790. doi: 10.21608/jppp.2010.86938

EFFECT OF TEMPERATURE AND RELATIVE HUMIDITY ON THE RATE OF DEVELOPMENT, FECUNDITY AND LIFE TABLE PARAMETERS OF THE RED SPIDER MITE Oligonychus mangiferus (RAHMAN AND, SAPRA) (ACARI: TETRANYCHIDAE)

Article 3, Volume 1, Issue 10, October 2010, Page 785-790  XML PDF (292.04 K)
Document Type: Original Article
DOI: 10.21608/jppp.2010.86938
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Authors
B. A. Abou-Awad1; M. M. Al-Azzazy2; Sahar I. Afia1
1Plant Protection Dept., National Res. Centre, 12622 Dokki, Cairo, Egypt.
2Dept. Agric. Zoology and Nematology, Fac. Agric., AI-Azhar Univ. Cairo, Egypt
Abstract
Studies on biology of Oligonychus mangiferus (Rahman and Sapra) at combination of eight constant temperatures and relative humidities (RHs) viz., 7.0°C with 85% RH, I0°C with 80% RH, 15.0°C with 75% RH, 23.0°C with 70% RH, 31.0°C with 65% RH, 34.0°C with 65% RH, 36.0°C with 60% RH and 40.0°C with 55% RH revealed that the optimal condition for the development of these mites are 15.0-31.0°C and 65-75% RH. The highest temperature and the lowest RH accelerated the rate of development and induced more reproduction of O. mangiferus. Its population also multiplied 30.81 times in a generation time of 27.36 days at 31.0°C and 65% RH, while the same population only increased 7.46 times in a generation time of 48.07 days at 15.0°C and 75% RH. Fecundity was highest at 31.0°C and 65% RH with 46.43 eggs per female. The highest intrinsic rate of natural increase was observed at 31.0°C as 0.125 per day.
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