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DocumentOther documentA preliminary study on ecological features of two natural enemies against two vectors of pine wilt disease for mass rearing in Korea
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Two species of the genus Monochamus (Coleoptera: Cerambycidae), M. alternatus and M. saltuarius are well-known as vectors of the pine wilt disease and they causes economically damages in South Korea. Among various control methods to reduce the density of vectors, a method by biological control agents (natural enemies) is eco-friendly indispensable. Since 2017, we have carried out the studies on the parasitic natural enemies againt for the vector species and found two parasitoids, Spathius verustus Chao, 1977 (Braconidae) and Cyanopterus flavator (Fabricius, 1793) (Bracondiae), would be a useful agents for biological controls. For accumulation of biological data, we conducted a preliminary study on life span and parasitic rate of two parasitic wasps against for two vector species. As results, we found that S. verustus has the longest adult life span of 33.4±19.2 days (avg.) in M. alternatus (T=30°C, H=60%) and C. flavator has the longest adult life span of 25.1±10.6 days (avg.) in M. alternatus (T=25°C, H=60%). The average parasitic rate (62.5%) of S. verustus was highest in M. alternatus (T=30°C, H=60%). In addition, it is confirmed that the offsprings of S. verustus can be made by parthenogenetic reproducton. Keywords: Research ID: 3622037 -
DocumentOther documentExploration of new natural enemies of the asian longhorned beetle (Coleoptera: Cerambycidae) in China using sentinel host eggs and larvae
XV World Forestry Congress, 2-6 May 2022
2022Also available in:
No results found.Asian longhorned beetle (ALB), Anoplophora glabripennis (Motschulsky) is a polyphagous wood boring pest that attacks many economically important orchard, roadside, ornamental and forest trees (>100 species). Due to the widespread planting of poplars and willows, it has become one of the most serious forest pests in China and the Korean Peninsula. This cerambycid has also invaded North America and Europe. In order to control ALB in China, many techniques have been employed such as forest management, traps, insecticides, and biological control. Prior to this study, two native polyphagous parasitoids, Sclerodermus guani and Dastarcus helophoroides are currently being used throughout China to control ALB, and few other parasitoids have been reported parasitizing ALB. In order to find specialist parasitoids of ALB, the Chinese Academy of Forestry and USDA-APHIS have carried out a biocontrol program in China since 2015 by applying the technique of deploying ALB-infested sentinel logs to attract parasitoids in three different sites of China (Beijing, Shanghai, and Jilin). From 2015 to 2020, our survey detected 12 species of hymenopteran parasitoids attacking sentinel Asian longhorned beetle larvae or eggs, namely, Bracon planitibiae Yang, Cao et Gould, Iphiaulax impostor (Scopoli), Spathius glabripennis sp.nov. (Unpublished), Zombrus bicolor (Enderlein) (Braconinae), Callocleonymus beijingensis Yang, Oxysychus scolyti Yang, Zolotarewskya robusta glabripennis ssp. nov. (unpublished), Zolotarewskya anoplophora sp.nov. (unpublished) (Pteromalidae), Eurytoma morio Boheman (Eurytomidae), Eupelmus urozonus Dalman (Eupelmidae), Sclerodermus guani Xiao et Wu (Bethylidae) and Xorides sp. (Ichneumonidae). Total parasitism by all these parasitoids was 7–16% in Beijing, 4–11% in Shanghai, and 0–0.2% in Jilin Province, among which, Spathius glabripennis sp.nov and Oxysychus scolyti with rates of parasitism are 1-4% and 2-10% respectively. Keywords: Biodiversity conservation, Sustainable forest management, Research, Innovation ID: 3480709 -
Book (stand-alone)Technical reportReport of the expert consultation on coconut beetle outbreak in APPPC member countries 2004
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No results found.An account of the consultation held at the FAO regional office in Bangkok from 26 to 27 October 2004, attended by 17 representatives from 11 countries, to exchange experiences and lessons learned among member countries of the Asia-Pacific Plant Protection Commission (APPPC) that are facing or may face coconut beetle outbreaks. Brontispa longissima is one of the most damaging pests of coconut in Asia and the Pacific and has spread to new areas in the region at a rapid pace. The beetle can cause s ignificant production losses, and high infestation levels may result in tree death. The traditional pest management approach based on insecticide use has not been able to stop the spread and the damage continues unabated. Experiences from countries in the Pacific demonstrate that the insect can be quickly, effectively and sustainably contained using classical biological control. This publication brings together the papers and presentations of the consultation as well as recommendations for commo n strategies to contain the pest.
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