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Brochure, flyer, fact-sheetInvasive beetle threatens forest and fruit trees 2019
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No results found.The polyphagous shot hole borer (PSHB) is an ambrosia beetle (Coleoptera: Curculeonidae: Scolytinae) native to Asia, together with its fungal symbiont Fusarium euwallaceae. PHSB attacks agricultural and forestry crops, street and garden trees, as well as several native tree species. It has emerged as an important invasive pest killing avocado and other trees in Israel, California and the United States. The PSHB is one of three species in the Euwallacea fornicatus species complex, the taxonomy of which remains to be resolved. The PSHB and its fungus were discovered in South Africa in 2017. The beetle has since then spread to a number of provinces in the country where it has infested and killed large numbers of trees. This small ambrosia beetle has an extraordinary wide host range. It has already been reported on many popular tree species grown in urban areas of South Africa, and is also a pest of pecan nut trees, avocado and other fruit trees. To help member countries address and manage the increased threats to forest health from invasive species such as PSHB, FAO facilitates the Forest Invasive Species Networks for Africa, Asia-Pacific, Europe and Central Asia and the Near East. These networks improves the exchange of information, knowledge and expertise on invasive species issues and enhance collaboration in the regions. -
Brochure, flyer, fact-sheetHalting bark beetles that cause pine forests dieback in Belarus and Ukraine 2018
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No results found.Pine dieback, caused by bark beetles, is severely damaging Scots pine (Pinus sylvestris) in Belarus and Ukraine. Bark beetles usually attack dead or dying trees and serve as primary decomposers. However, under stressful conditions, such as drought or high tree density, they can attack and destroy healthy trees in large numbers, overcoming tree defenses. To face this situation, FAO is providing technical assistance for combating the dieback of pine forests using Integrated Pest Management (IPM) strategies. -
DocumentComparison of flight capability of two Monochamus beetle species (Coleoptera: Cerambycidae) using flight mills
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.To compare flight capability between males and females of Monochamus alternatus and M. saltuarius, vector insect species for pine wood nematode, a total of 42 adult beetles (25 males and 17 females) for M. alternatus and 42 adult beetles (18 males and 24 females) for M. saltuarius was tested using flight mills. Adult beetles that emerged from Pinus koraiensis logs were tethered on flight mills, and flight distance was measured weekly for entire life span. In each flight session, every tested beetle was tethered on flight mills using insect pin with glue. We only analyzed beetles that flew above 100 m in each flight session. As a result, cumulated flight distance of M. alternatus was longer than that of M. saltuarius. However, the average cumulated flight distances for entire life span was longer in males for two beetle species compared to their females. These results can be used for the estimation of pine wilt disease spread from invaded area to neiboring areas. Keywords: Adaptive and integrated management, Biodiversity conservation, Deforestation and forest degradation ID: 3623055
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