Behavioral Response of Plum Curculio, Conotrachelus nenuphar, to Synthetic Fruit Volatile Lures and the Male-Produced Aggregation Pheromone
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Date
2015-10-15
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Publisher
Hindawi Publishing Corporation, Psyche
Abstract
Plum curculio, Conotrachelus nenuphar Herbst (Coleoptera: Curculionidae), is a key pest of stone and pome fruits in North
America. The behavioral response of adults of different physiological states (sex, age, diet, andmating status) to three commercially
available synthetic lures, benzaldehyde (BZ) and plum essence (PE), the male-produced aggregation pheromone, grandisoic acid
(GA), or their combinations, was studied in the laboratory. Four choice olfactometer bioassays demonstrated significant attraction
of both sexes to PE lure. Both BZ and GA lures were not attractive to plum curculio when tested as commercially formulated. PE
had higher release rate (1.51mg/hr) than BZ (0.36mg/hr) and GA (ca. 0.04mg/hr), suggesting that the higher attractiveness of
PE may be due to its relatively higher release rates. Tests with combined lures showed a neutral effect of combining GA with PE
and an inhibitory effect of combining BZ with PE. The physiological conditions of the weevils had no significant effect on their
response to the lures. Olfactometer tests with pure 1,2,4-trichlorobenzene (TCB) confirmed that this compound was inhibitory to
plum curculio. These results are discussed in relation to the contrasting field reports which implicated BZ + GA as an effective
attractant for plum curculio.
Description
Research Article
Keywords
Behavioral Response, Plum Curculio, Conotrachelus nenuphar, Synthetic Fruit Volatile Lures, Male-Produced, Pheromone
Citation
C. Akotsen-Mensah and H. Y. Fadamiro.(2015) Behavioral Response of Plum Curculio, Conotrachelus nenuphar, to Synthetic Fruit Volatile Lures and the Male-Produced Aggregation Pheromone. Hindawi Publishing Corporation. pp 9