Host Plant Volatiles Synergize Response to Sex Pheromone in Codling Moth, Cydia pomonella

AbstractTwo species in the genus Monochamus Dejean (Coleoptera: Cerambycidae: Lamiinae) have recently been shown to have the same male-produced sex pheromone, 2-undecyloxy-1-ethanol (monochamol), suggesting that other congeners may share the same pheromone. We tested that hypothesis by conducting field bioassays of monochamol, in combination with bark-beetle pheromones and the host plant volatiles ethanol and α-pinene, in southern British Columbia, Canada. We captured 603 Monochamus clamator (LeConte), 63 Monochamus obtusus Casey, 245 Monochamus scutellatus (Say) (tribe Monochamini), and 42 Acanthocinus princeps (Walker) (tribe Acanthocinini). All three Monochamus species were significantly attracted to the combination of monochamol and host plant volatiles, whereas bark-beetle pheromones plus plant volatiles and plant volatiles alone were minimally attractive. Adding bark-beetle pheromones to the monochamol plus plant volatiles treatment synergised attraction of M. clamator, but not the other two Monochamus species. Acanthocinus princeps was most strongly attracted to the combination of bark-beetle pheromones and plant volatiles, and did not appear to be affected by the presence or absence of monochamol in baits. We conclude that monochamol is a likely pheromone component for the three Monochamus species, and that monochamol plus host plant volatiles is an effective attractant for these and perhaps other North American Monochamus species.

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Ordinary glomeruli in the antennal lobe of male and female tortricid moth Grapholita molesta (Busck) (Lepidoptera: Tortricidae) process sex pheromone and host-plant volatiles

Journal of Experimental Biology ◽

10.1242/jeb.047316 ◽

2011 ◽

Vol 214 (4) ◽

pp. 637-645 ◽

Cited By ~ 15

Author(s):

N. Varela ◽

J. Avilla ◽

C. Gemeno ◽

S. Anton

Keyword(s):

Sex Pheromone ◽

Host Plant ◽

Antennal Lobe ◽

Plant Volatiles ◽

Host Plant Volatiles ◽

Grapholita Molesta ◽

Male And Female

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Host-Plant Volatiles Enhance the Attraction of Cnaphalocrocis medicals (Lepidoptera: Crambidae) to Sex Pheromone

10.21203/rs.3.rs-484527/v1 ◽

2021 ◽

Author(s):

Fang Liu ◽

Hai-Tao Du ◽

Yao Li ◽

Jun Zhu

Keyword(s):

Sex Pheromone ◽

Synergistic Effect ◽

Host Plant ◽

Plant Volatiles ◽

Methyl Salicylate ◽

Management Strategies ◽

Cnaphalocrocis Medinalis ◽

Host Plant Volatiles ◽

Insect Sex Pheromones ◽

Lepidoptera Pyralidae

Abstract Cnaphalocrocis medinalis Guenée (Lepidoptera: Pyralidae) is a notorious pest of rice, Oryza sativa L.(Poaceae). Sex pheromone and host-plant volatiles can trap C. medinalis separately. To improve the trap efficiency of sex pheromone, we first tested the synergistic effect of 8 host-plant volatiles, including 2-Phenylethanol, 1-Hexanol, 1-Heptanol, (Z)-3-Hexenal, (E)-2-Hexenal, Octanal, Valeraldehyde, and Methyl Salicylate on the attraction of C. medinalis to the female-produced sex pheromone in electroantennography. The addition of (E)-2-Hexenal, Methyl Salicylate, Valeraldehyde, and (Z)-3-Hexenal increased electroantennogram response of C. medinalis to sex pheromone. Further testing of the mixtures of these four compounds and sex pheromone in wind tunnel experiments indicated that additive (E)-2-Hexenal or Methyl Salicylate stimulated the landing behaviors of both male and female C. medinalis compared with sex pheromone alone. Field evaluations showed that mixtures of sex pheromone and (E)-2-Hexenal or Methyl Salicylate resulted in significantly higher catches to male moths than sex pheromone alone. Using 1:1 and 1:10 combinations of the sex pheromone and (E)-2-Hexenal, showed a synergistic effect of 95% and 110%, respectively. Furthermore, 1:1 and 1:10 mixtures of the sex pheromone and Methyl Salicylate exhibited a synergistic effect of 69% and 146%, respectively. These results may provide the basis for developing efficient pest management strategies against C. medinalis using host-plant volatiles and insect sex pheromones.

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