Life table of the hemispherical scale, Saissetia coffeae (Walker) (Hemiptera: Coccidea) | ||
| Egyptian Academic Journal of Biological Sciences. A, Entomology | ||
| Article 15, Volume 2, Issue 2, December 2009, Pages 165-170 PDF (151.15 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/eajbsa.2009.15438 | ||
| Authors | ||
| Shaaban Abd-Rabou; Nadia Ali; Monira M. El-Fatih | ||
| Plant Protection Research Institute, Agricul., Research Center, Dokki, Giza, Egypt | ||
| Abstract | ||
| The hemispherical scale, Saissetia coffeae (Walker) (Hemiptera: Coccidae) is one of the most important pest attacking olive trees in Egypt. The aim of the present work is to study the biological studies of the hemispherical scale, S. coffeae. Mean durations of the first instar were 15.5± 0 .85, 12.8 ± 0.63 and 9±0.76 days at 18, 24 and 30oC, respectively. Second instar lasted for 23.3±0.67, 20.6±0.52 and 16.9± 0.88 days, respectively. While third instar durations were 22.6± 0.70, 19.8±0.63 and 13.2± 0.79, respectively. Incubation periods were 21.4 ± 1.17, 14.4 ± 0.70 and 10.1 ± 0.88 days, respectively. The generation time was 82.80±1.48, 67.6±1.26 and 49.2±2.10 days, respectively. As a result the durations of the adult longevity were 6±0.67, 8.7±0.82 and 8.9 ± 0.74 days at 18, 24 and 30oC, respectively. | ||
| Keywords | ||
| life table; Saissetia coffeae; Hemiptera | ||
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