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Three Colopterus beetle species carry the oak wilt fungus to fresh wounds on red oak in MissouriAuthor(s): Maya Hayslett; Jennifer Juzwik; Bruce Moltzan
Source: Plant Disease. 92(2): 270-275.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
PDF: View PDF (204.94 KB)
DescriptionBeetles in the family Nitidulidae can transmit the oak wilt fungus, Ceratocystis fagacearum, to fresh wounds on healthy oak trees, leading to infection and disease development. Historically, nitidulid beetles have not been considered important vectors of the pathogen in Missouri. Studies were conducted in the spring of 2005 and 2006 to determine frequencies of nitidulid beetle species contaminated with C. fagacearum visiting fresh wounds on red oak trees in central Missouri. Colopterus truncatus, C. niger, and C. semitectus were the most abundant species collected from fresh wounds and the only species found to be contaminated with Ceratocystis fagacearum. Of 230 beetles assayed for C. fagacearum, 23 yielded the fungus. Contamination frequencies were higher for beetles collected in April than May; no beetles collected in June were contaminated. We hypothesize that
, and C. semitectus are principal nitidulid beetle vector species in Missouri during spring. The risk for pathogen transmission by these beetles appears to be greatest in April and least in June.
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CitationHayslett, Maya; Juzwik, Jennifer; Moltzan, Bruce. 2008. Three Colopterus beetle species carry the oak wilt fungus to fresh wounds on red oak in Missouri. Plant Disease. 92(2): 270-275.
Keywordsinsect vectors, Quercus spp.
- Acquisition of Ophiostoma quercus and Ceratocystis fagacearum by nitidulids from O. quercus-colonized oak wilt mats
- Seasonal and Regional Distributions, Degree-Day Models, and Phoresy Rates of the Major Sap Beetle (Coleoptera: Nitidulidae) Vectors of the Oak Wilt Fungus, Bretziella fagacearum, in Wisconsin
- Seasonal dispersal of the oak wilt fungus by Colopterus truncatus and Carpophilus sayi in Minnesota
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