Canadian Journal of Forest Research - Revue Canadienne de Recherche Forestière (2019) 49, 1024-1041

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Kelsey L. Jones, Victor A. Shegelski, Nathan G. Marculis, Asha N. Wijerathna and Maya L. Evenden (2019)
Factors influencing dispersal by flight in bark beetles (Coleoptera: Curculionidae: Scolytinae): from genes to landscapes
Canadian Journal of Forest Research - Revue Canadienne de Recherche Forestière 49 (9), 1024-1041
Abstract: 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
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Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Hylurgus ligniperda
Ips typographus
Dendroctonus frontalis
Dendroctonus pseudotsugae
Dendroctonus ponderosae
Dendroctonus valens
Ips sexdentatus
Ips grandicollis
Dendroctonus armandi
Ips confusus
Ips calligraphus
Pityophthorus juglandis