Ismail, M., AboGhalia, A., Soliman, M., Ghallab, M. (2011). Certain effects of different spectral colors on some biological parameters of the two-spotted spider mite, Tetranychus urticae. test, 3(1), 27-39. doi: 10.21608/eajbsz.2011.14311
Manal S. M. Ismail; Ahmed H. AboGhalia; Maha F. M. Soliman; Mona M.A. Ghallab. "Certain effects of different spectral colors on some biological parameters of the two-spotted spider mite, Tetranychus urticae". test, 3, 1, 2011, 27-39. doi: 10.21608/eajbsz.2011.14311
Ismail, M., AboGhalia, A., Soliman, M., Ghallab, M. (2011). 'Certain effects of different spectral colors on some biological parameters of the two-spotted spider mite, Tetranychus urticae', test, 3(1), pp. 27-39. doi: 10.21608/eajbsz.2011.14311
Ismail, M., AboGhalia, A., Soliman, M., Ghallab, M. Certain effects of different spectral colors on some biological parameters of the two-spotted spider mite, Tetranychus urticae. test, 2011; 3(1): 27-39. doi: 10.21608/eajbsz.2011.14311

Certain effects of different spectral colors on some biological parameters of the two-spotted spider mite, Tetranychus urticae

Egyptian Academic Journal of Biological Sciences, B. Zoology
Article 4, Volume 3, Issue 1, December 2011, Pages 27-39    PDF (1.09 M)
Document Type: Original Article
DOI: 10.21608/eajbsz.2011.14311
Authors
Manal S. M. Ismail1; Ahmed H. AboGhalia2; Maha F. M. Soliman2; Mona M.A. Ghallab3
1Plant Protection Research Institute, Agriculture Research Center, Dokki, Cairo, Egypt.
2Zoology Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
3Plant Protection Research Institute, Agriculture Research Center, Dokki, Cairo, Egypt
Abstract
Certain effects of different spectral light colors were studied on some biological attributes of the two-spotted spider mite, Tetranychus urticae. Rearing of animals was carried out under conditions of 27±0.5°C; 60% R.H. and 16 L/8 D photoperiod on Sweet Potato leaves. Thus, 5 artificial light colors were applied under controlled laboratory conditions on these animals: blue, red, green, yellow and white Neon. After treatment, the highest number of deposited eggs/female was observed by using the blue color (14.9±0.5 eggs/female) while the lowest one was the yellow (3.1±0.2 eggs/female) compared to 9.9±0.4 eggs/female for the control group. On the other hand, diapause incidence was observed for the target females under conditions of 18±2°C; 60±2% R.H. and the light and dark periods were set at 8 L/16 D, respectively. Results showed that white Neon color caused the highest percentage of diapausing females (88.66±1.8%) followed by green color (78±3.5%), yellow (68.66±2%), the blue color with (54±2%), and finally none of them entered diapause under red color. Results were analyzed and discussed for the aforementioned important economic pest animals.
Keywords
Tetranychus urticae; light colors; biology; diapause incidence
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