气候变化领域集成服务门户(CCPortal): Density-dependent responses of mountain pine beetle to its pheromones and host volatiles in naïve lodgepole pine stands

CCPortal

DOI	10.1016/j.foreco.2020.118257
	Density-dependent responses of mountain pine beetle to its pheromones and host volatiles in naïve lodgepole pine stands
	Klutsch J.G.; Classens G.; Whitehouse C.; Cahill J.F.; Jr.; Erbilgin N.
发表日期	2020
ISSN	0378-1127
卷号	472
英文摘要	Mountain pine beetle has expanded its host range into naïve lodgepole pine forests in western Canada and killed a large number of pine trees. Synthetic attractants mainly bark beetle pheromones and host monoterpenes attached to traps are typically used to monitor beetle populations within its range. Despite well-established differences in beetle host selection behavior between endemic and outbreak population densities, the influence of population density on the response of mountain pine beetle to the synthetic attractants is poorly understood. Over three years, we tested the effects of different release rates of female mountain pine beetle aggregation pheromone (trans-verbenol) and two host monoterpenes (terpinolene and mycrene) and local beetle population density on trap catches of mountain pine beetle. We estimated local mountain pine beetle population densities using the number of dead trees observed in the previous year's aerial detection survey. During the first three weeks of the flight period, the lures with low release rates of all components captured more mountain pine beetle with increasing beetle population density and the lures with a high release rate of trans-verbenol plus a low release rate of host monoterpenes were preferred by beetles in low population density sites. We also found a temporal shift in attraction patterns. As the flight period progressed, the preference for low trans-verbenol release rate lures was less pronounced at high mountain pine beetle densities. No sex-specific responses of mountain pine beetles, along with number of competitor and predatory beetles of mountain pine beetle, were found for a particular attractant. These results provide evidence that mountain pine beetle has a density dependent response to attractants and can assess available semiochemicals cues to ensure successful host colonization depending on their density and the flight period. Overall, this study can improve the efficacy of current semiochemical-based monitoring tools, which are essential to implementing informed mitigation strategies for mountain pine beetle especially while they are in a sub-outbreak stage in the expanded distribution. © 2020 Elsevier B.V.
关键词	Antennas Biochemistry Hormones Landforms Monoterpenes Population distribution Population dynamics Population statistics Aerial detection Density dependent Lodgepole pine forests Mitigation strategy Monitoring tools Mountain pine beetle Population densities Temporal shifts Forestry aggregation pheromone attractant beetle colonization coniferous forest density dependence host range host selection pheromone population density volatile substance Biochemistry Density Forestry Hormones Monoterpenes Pinus Mugo Release Canada Coleoptera Dendroctonus ponderosae Pinus contorta Pinus mugo Scolytinae
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132728
推荐引用方式 GB/T 7714	Klutsch J.G.,Classens G.,Whitehouse C.,et al. Density-dependent responses of mountain pine beetle to its pheromones and host volatiles in naïve lodgepole pine stands[J]. Forest Ecology and Management,2020,472.
APA	Klutsch J.G.,Classens G.,Whitehouse C.,Cahill J.F.,Jr.,&Erbilgin N..(2020).Density-dependent responses of mountain pine beetle to its pheromones and host volatiles in naïve lodgepole pine stands.,472.
MLA	Klutsch J.G.,et al."Density-dependent responses of mountain pine beetle to its pheromones and host volatiles in naïve lodgepole pine stands".472(2020).