Quercivorol as a lure for the polyphagous and Kuroshio shot hole borers, Euwallacea spp. nr. fornicatus (Coleoptera: Scolytinae), vectors of Fusarium dieback

PeerJ

Jessica Coolidge¹  Richard Stouthamer¹  Christine Dodge¹  Miriam Cooperband²  Allard Cossé²  Daniel Carrillo³ 

[1] Department of Entomology, University of California, Riverside, CA, USA;Otis Laboratory, USDA-APHIS, Buzzards Bay, MA, USA;Tropical Research and Education Center, University of Florida, Homestead, FL, USA;

关键词: Fusarium;    Euwallacea;    Ambrosia beetle;    Scolytinae;    Quercivorol;    Verbenone;   

DOI  :  10.7717/peerj.3656

来源: DOAJ

【 摘 要 】

The polyphagous shot hole borer and Kuroshio shot hole borer, two members of the Euwallacea fornicatus species complex (Coleoptera: Curculionidae: Scolytinae), are invasive ambrosia beetles that harbor distinct species of Fusarium fungal symbionts. Together with the damage caused by gallery construction, these two phytopathogenic Fusarium species are responsible for the emerging tree disease Fusarium dieback, which affects over 50 common tree species in Southern California. Host trees suffer branch dieback as the xylem is blocked by invading beetles and fungi, forcing the costly removal of dead and dying trees in urban areas. The beetles are also threatening natural riparian habitats, and avocado is susceptible to Fusarium dieback as well, resulting in damage to the avocado industries in California and Israel. Currently there are no adequate control mechanisms for shot hole borers. This paper summarizes efforts to find a suitable lure to monitor shot hole borer invasions and dispersal. Field trials were conducted in two counties in Southern California over a span of two years. We find that the chemical quercivorol is highly attractive to these beetles, and perform subsequent field experiments attempting to optimize this lure. We also explore other methods of increasing trap catch and effects of other potential attractants, as well as the deterrents verbenone and piperitone.

【 授权许可】

Unknown