Mechanisms of Odor Coding in Coniferous Bark Beetles: From Neuron to Behavior and Application

Table 1

Compounds from different ecological sources that elicit strong responses in olfactory receptor neurons in eight species of Scolytinae.

Species	Beetle-produced compounds	Host compounds	Nonhost compounds	References
Ips typographus	(+)-ipsdienol	Myrcene	Pine bark extract	[19, 28–31]
	(−)-ipsdienol	Campher (B)	Birch bark extract
	(−)-ipsenol	Pino-camphone (B)	1-hexanol (D)
	(−)-cis-verbenol	p-cymene	E2-hexenol (D)
	(+)-trans-verbenol	3-carene	Z3-hexenol (D)
	(−)-verbenone	1,8-cineole	1-octen-3-ol
	2-methyl-3-buten-2-ol	(+)-α-pinene (C)	3-octanol
	Amitinol	(−)-α-pinene (C)	(S,S)-trans-conophthorin (A)
	Phenylethanol
	exo-brevicomin (A)*
	(±)-chalcogran (A)
Ips pini	(+)-ipsdienol	Linalool		[29, 32–34]
	(−)-ipsdienol	Camphor
	(±)-ipsenol	Myrcene
	cis-verbenol
	trans-verbenol
	Verbenone
Ips paraconfusus	(+)-ipsdienol			[33]
	(−)-ipsdienol
	(±)-ipsenol
Dendroctonus pseudotsugae	Frontalin	α-pinene		[35, 36]
	3-methyl-2-cyclohexenone	Limonene
	3-methyl-2-cyclohexenol
	1-methyl-2-cyclohexenol
	trans-verbenol
	cis-verbenol
	Verbenone
	Ipsenol
Dendroctonus frontalis	(−)-frontalin	α-pinene		[37, 38]
	exo-brevicomin	3-carene
	endo-brevicomin
	Verbenone
	trans-verbenol
Dendroctonus micans	(+)-ipsdienol			[31]
	exo-brevicomin
Trypodendron lineatum	(+)-lineatin	Ethanol	Pine bark extract
	Phenylethanol	Methanol	Birch bark extract
		Butanol		[39]
		α-pinene
		β-pinene
		Spruce bark extract
Tomicus destruens		Compounds in pine extract	Benzyl alcohol	[40]

*Compounds that elicit responses of similar strength in the same ORN class are indicated by the same capital letter. Odorants eliciting secondary responses are omitted for clarity.