BIOECOLOGY OF THE BUPRESTID BORER, Ptosima undecimmaculata HERBST (COLEOPTEA: BUPRESTIDAE): A PEST OF GRAPEVINE | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 5, Volume 25, Issue 8 - Serial Number 2, August 2000, Page 5469-5481 PDF (886.19 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2000.259584 | ||||
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| Authors | ||||
| A. A.A. Sharaf El-Din,; E. A. Agamy | ||||
| Department of Economic Entomology and Pesticides, Faculty of Agriculture, Cairo University, Egypt | ||||
| Abstract | ||||
| The buprestid borer Ptosima undecimmaculata Herbstwas found to be the most destructive pest of grapevine (Vetis venifera L.) in El Sadat City, Menoufia was found causing 30.4 – 47.2% damages between 1998 - 2000. Emergence of adults lasted about 20 weeks from March to July with peaks occurring throughout May. An average of 4.50, 5.80 and 7.85 beetles emerged per tree during 1998 - 2000, respectively. The effect of day-maximum temperature, night-minimum temperature and daily mean relative humidity on P. undecimmaculata seemed to be fluctuated within the optimal range of beetles’ activity during 1998 while they were out of the optimal range of beetles emergence throughout 1999 and 2000. The activity of beetles was mostly related to the combined action of the three weather factors simultaneously 56.6 – 81.7% in the rate of beetles emergence was attributed to the effect of these three weather factors. Research into biological aspects of P. undecimmaculata demonstrated that the life cycle elapsed more than one year with adult emerged between March and July. Peak adult emergence occurred in May and male: female sex ratio was about 1.3: 1.0. Males outnumbered females in the early emergence period, whilst females were more numerous between May and July. The mean lengths of preoviposition, oviposition and postoviposition periods were 11.0 ± 1.4, 8.4 ± 2.2 and 9.4 ± 2.7 days, respectively. The mean longevity of females and males was 28.8 ± 3.8 and 20.4 ± 2.9 days, respectively. Data indicated that an average of 29.9 ± 9.4 eggs were laid per female and the mean number of deposited eggs per female per day was 3.54 ± 0.4 eggs. Egg hatch with an 80% success rate after 23.5 ± 4.1 days. There was no correlation between preoviposition period and female longevity, but oviposition period was significantly correlated with female longevity. Also, fecundity was correlated significantly with longevity. The mean total larval and pupal periods were 379.4 ± 29.4 and 21.3 ± 4.1 days, receptively. | ||||
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