Journal
CANADIAN JOURNAL OF FOREST RESEARCH
Volume 49, Issue 9, Pages 1024-1041Publisher
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/cjfr-2018-0304
Keywords
Scolytinae; flight; dispersal; bark beetle
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada [NET GP 434810-12]
- Alberta Agriculture and Forestry
- fRI Research
- Manitoba Conservation and Water Stewardship
- Natural Resources Canada Canadian Forest Service
- Northwest Territories Environment and Natural Resources
- Ontario Ministry of Natural Resources and Forestry
- Saskatchewan Ministry of Environment
- West Fraser
- Weyerhaeuser
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Dispersal by flight is obligatory for bark beetles in the subfamily Scolytinae. Adult bark beetles must leave the natal host and fly to seek new hosts for brood production. Because of the eruptive nature of some bark beetle populations, dispersal capacity has implications for beetle spread and invasion across the landscape. Bark beetle dispersal can occur over short distances within a stand or over long distances above the forest canopy, where wind aids dispersal. Despite the obvious importance of dispersal for predicting population spread, knowledge gaps in understanding factors that influence bark beetle dispersal remain. In this review, we synthesize information on bark beetle flight to gain a better understanding of this important life history trait. We assess the impact of genetic, physiological, and morphological traits on flight in different bark beetle species. We also consider the impact of abiotic and biotic environmental conditions on flight. We discuss how measurements of these factors could contribute to the development of comprehensive models to better predict spread of bark beetle populations. Through the synthesis of flight research on a variety of bark beetle species, this review provides suggestions for future avenues of research on this important aspect of bark beetle ecology.
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