Seasonal dispersal of the oak wilt fungus by Colopterus truncatus and Carpophilus sayi in Minnesota

Angie K. Ambourn; Jennifer Juzwik; Roger D. Moon

doi:10.1094/pd-89-1067

Treesearch

Seasonal dispersal of the oak wilt fungus by Colopterus truncatus and Carpophilus sayi in Minnesota

Informally Refereed

Authors:

Angie K. Ambourn, Jennifer Juzwik, Roger D. Moon

Year:

2005

Type:

Scientific Journal

Station:

Northern Research Station

DOI:

https://doi.org/10.1094/pd-89-1067

Source:

Plant Disease. 89(10): 1067-1076.

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Abstract

Sap beetles (Nitidulidae) are considered important overland vectors of the oak wilt pathogen, Ceratocystis fagacearum, in the north central United States. Colopterus truncatus and Carpophilus sayi are thought to be the principal sap beetle vectors in Minnesota. Field studies using wind-oriented funnel traps baited with aggregation pheromones of the insects were conducted during 2 years in east central Minnesota. The studies compared temporal flight dynamics of Colopterus truncatus and Carpophilus sayi from April through October, measured the proportion of dispersing adults of each species carrying viable pathogen propagules, and estimated the populations of contaminated dispersing beetles in oak (Quercus spp.) stands with and without oak wilt.

Keywords

fungal phoresy rates, vascular wilt disease

Citation

Ambourn, Angie K.; Juzwik, Jennifer; Moon, Roger D. 2005. Seasonal dispersal of the oak wilt fungus by Colopterus truncatus and Carpophilus sayi in Minnesota. Plant Disease. 89(10): 1067-1076.