Host Range of Fusarium Dieback and Its Ambrosia Beetle (Coleoptera: Scolytinae) Vector in Southern California.

摘要: The polyphagous shot hole borer (PSHB) is an invasive ambrosia beetle that forms a symbiosis with new, as-yet-undescribed Fusarium sp., together causing dieback on avocado and other host plants in California Israel. In California, PSHB was first reported black locust 2003 but there were no records of fungal damage until 2012, when sp. recovered from the tissues several backyard trees infested Los Angeles County. aim this study to determine plant range beetle-fungus complex two heavily botanical gardens Of 335 tree species observed, 207 (62%), representing 58 families, showed signs symptoms consistent attack by PSHB. 54% attacked PSHB, indicated presence at least site entry hole. Trees included 11 natives, 13 agriculturally important species, many common street trees. Survey results also revealed 19 function as reproductive hosts for Additionally, approximately quarter all individuals planted along streets southern belong classified host. These data suggest beetle-disease potentially may establish variety communities locally worldwide.