@article {10878,
	title = {Response to host volatiles by native and introduced populations of Dendroctonus valens (Coleoptera: Curculionidae, Scolytinae) in North America and China},
	journal = {Journal of Chemical Ecology},
	volume = {33},
	number = {1},
	year = {2007},
	month = {January},
	pages = {131-146},
	abstract = {Bark beetles (Coleoptera: Curculionidae, Scolytinae) have specialized feeding habits, and commonly colonize only one or a few closely related host genera in their geographical ranges. The red turpentine beetle, Dendroctonus valens LeConte, has a broad geographic distribution in North America and exploits volatile cues from a wide variety of pines in selecting hosts. Semiochemicals have been investigated for D. valens in North America and in its introduced range in China, yielding apparent regional differences in response to various host volatiles. Testing volatiles as attractants for D. valens in its native and introduced ranges provides an opportunity to determine whether geographic separation promotes local adaptation to host compounds and to explore potential behavioral divergence in native and introduced regions. Furthermore, understanding the chemical ecology of host selection facilitates development of semiochemicals for monitoring and controlling bark beetles, especially during the process of expansion into new geographic ranges. We investigated the responses of D. valens to various monoterpenes across a wide range of sites across North America and one site in China, and used the resulting information to develop an optimal lure for monitoring populations of D. valens throughout its Holarctic range. Semiochemicals were selected based on previous work with D. valens: (R)-(+)-[alpha]-pinene, (S)-(-)-[alpha]-pinene, (S)-(-)-[beta]-pinene, (S)-(+)-3-carene, a commercially available lure (1:1:1 ratio of (R)-(+)-[alpha]-pinene:(S)-(-)-[beta]-pinene:(S)-(+)-3-carene), and a blank control. At the release rates used, (+)-3-carene was the most attractive monoterpene tested throughout the native range in North America and introduced range in China, confirming results from Chinese studies. In addition to reporting a more effective lure for D. valens, we present a straightforward statistical procedure for analysis of insect trap count data yielding cells with zero counts, an outcome that is common but makes the estimation of the variance with a Generalized Linear Model unreliable because of the variability/mean count dependency.},
	keywords = {Dendroctonus valens},
	isbn = {0098-0331},
	author = {Erbilgin, N. and Mori, S. R. and Sun, J. H. and Stein, J. D. and Owen, D. R. and Merrill, L. D. and Campos Bolanos, R. and Raffa, K. F. and Mendez Montiel, T. and Wood, D. L. and Gillette, N. E.}
}
@article {10872,
	title = {Acetophenone as an anti-attractant for the western pine beetle, Dendroctonus brevicomis LeConte (Coleoptera: Scolytidae)},
	journal = {Journal of Chemical Ecology},
	volume = {33},
	number = {4},
	year = {2007},
	month = {April},
	pages = {817-823},
	abstract = {Host location and colonization by bark beetles is dependent upon the relative and absolute amounts of attractant and antiattractant compounds available. Many investigations have lead to use of antiattractants for the management of these pests and have been especially focused on verbenone. However, recent studies have identified new antiattractants for several species of bark beetles. We report results of recent investigations of the response of western pine beetle, Dendroctonus brevicomis LeConte, to two recently identified antiattractants, acetophenone, and fenchyl alcohol, with verbenone as a standard of comparison, in northern California. Release of both acetophenone and verbenone resulted in significantly lower trap catches of D. brevicomis in aggregation pheromone-baited traps, while fenchyl alcohol was inactive. Acetophenone was the only antiattractant that did not reduce numbers of the most abundant predator of D. brevicomis, Temnochila chlorodia (Mannerheim), responding to the attractant pheromone of its prey. Aggregation pheromone-baited traps with acetophenone also had the highest predator/prey ratio. Our results suggest that acetophenone may be part of the intra- and interspecific interactions among sympatric species of bark beetles and may have application in their control.},
	keywords = {Dendroctonus brevicomis},
	isbn = {0098-0331},
	author = {Erbilgin, N. and Gillette, N. E. and Mori, S. R. and Stein, J. D. and Owen, D. R. and Wood, D. L.}
}
