Climatic changes expose honeybee colonies to eradication due to increasing ferocity of attacking predator, oriental hornet Vespa orientalis L, in North Sinai region | ||
| Menoufia Journal of Plant Protection | ||
| Articles in Press, Accepted Manuscript, Available Online from 19 February 2023 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/mjapam.2023.127475.1003 | ||
| Authors | ||
| Hatem mohamed Mahfouz* 1; Mohammad Abd Al- Wahab Abd Al-Fattah2 | ||
| 1plant production, Fac. Environ. Agic. Sci., Arish Univ. | ||
| 2Dept. of Economic Entomology & Pesticides, Faculty of Agriculture, Cairo University, Giza, Egypt | ||
| Abstract | ||
| The climatic changes during the last two decades enhanced the invasion and establishment of V. orientalis predator in North Sinai governorate. This study was carried out using the modified hive trap in honeybee apiary at Al-Arish province, to monitor the seasonal abundance, diurnal activity and negative impact on bee colonies for two successive years,(2019 & 2020). The relationships between optimum air temperatures and relative humidity and the dynamic fluctuations of hornet are taken in consideration. The results showed that there are increase in temperature and RH by means of 4.7C° and 2.9 % after thirteen years of the first record of this hornet in North Sinai region. Highly significant and significant positive correlations were found between the population dynamic of oriental hornet and both temperature and RH, respectively. Few individuals of hornet start to appear from March till May, and then low population was observed in June followed by gradual increase from the first week of July up to the end of October. In the two studied years, the highest numbers of hornet were recorded during the first and fourth weeks of September. The wasp tends to disappear from the second fortnight of November. The effects of hornet attacking pressure on honeybee colonies start to appear from the 4th week of August in 2019 and from the 2nd week of September in 2020. The highest eradication percentages of bee colonies were in October (25.3% in 2019) and November (19.1% in 2020). | ||
| Keywords | ||
| climatic change; V. orientalis; honeybee; North Sinai | ||
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