AGGREGATION PHEROMONE OF COCONUT RHINOCEROS BEETLE, ORYCTES-RHINOCEROS (L) (COLEOPTERA, SCARABAEIDAE)

被引:72
作者
HALLETT, RH
PEREZ, AL
GRIES, G
GRIES, R
PIERCE, HD
YUE, J
OEHLSCHLAGER, AC
GONZALEZ, LM
BORDEN, JH
机构
[1] SIMON FRASER UNIV, DEPT CHEM, BURNABY, BC V5A 1S6, CANADA
[2] CHEM TICA INT, SAN JOSE, COSTA RICA
关键词
COLEOPTERA; SCARABAEIDAE; ORYCTES RHINOCEROS; COCONUT RHINOCEROS BEETLE; AGGREGATION PHEROMONE; PHEROMONE CHIRALITY; ETHYL; 4-METHYLOCTANOATE; 4-METHYLHEPTANOATE; 4-METHYLOCTANOIC ACID;
D O I
10.1007/BF02035152
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Male coconut minoceros beetles, Oryctes rhinoceros (L.), produce three sex-specific compounds, ethyl 4-methyloctanoate, ethyl 4-methylheptanoate, and 4-methyloctanoic acid, the first of which is an aggregation pheromone. Synthesis of these compounds involving conjugate addition of organocuprates to ethyl acrylate is reported. In field trapping experiments, (4S)-ethyl-4-methyloctanoate and the racemic mixture were equally attractive and 10 times more effective in attracting beetles than ethyl chrysanthemumate, a previously recommended attractant. Ethyl 4-methylheptanoate was as attractive as ethyl chrysanthemumate and more attractive than 4-methyloctanoic acid, but further studies are required before it can be classed as an aggregation pheromone. Compared to ethyl 4-methyloctanoate alone, combinations of the three male-produced compounds did not increase attraction, whereas addition of freshly rotting oil palm fruit bunches to pheromone-baited traps significantly enhanced attraction. With increasing dose, captures of O. rhinoceros increased, but doses of 6, 9, and 18 mg/day were competitive with 30 mg/day lures. Newly designed vane traps were more effective in capturing beetles than were barrier or pitfall traps. Results of this study indicate that there is potential for using ethyl 4-methyloctanoate in operational programs to control O. rhinoceros in oil palm plantations.
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页码:1549 / 1570
页数:22
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