スジマダラメイガの増殖に及ぼす性フェロモンの影響

概要

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Two pairs of newly emerging Cadra cautella females and males were confined in a glass pot (11-cm diameter, 7-cm height) with a pheromone holder impregnated with 100 μg of cis-9,trans-12-tetradecadien-1-ol acetate (c-9,t-12-TDDA), the synthetic sex pheromone of C. cautella. The oviposition into the pheromone-treated pot was delayed for ca. 2.8 days from that into the untreated pot, and the total number of eggs laid in the treated pot was decreased, though this difference was not significant. However, the oviposition of more than 5 pairs in a pot was not delayed with 100 μg of c-9,t-12-TDDA. When 2 pairs of C. cautella were confined in a pot with the different amounts of c-9,t-12-TDDA (12.5,25,50,100 and 200 μg respectively), the number of laid eggs was significantly decreased from that in the untreated pot for the first 3 days, except the case of 12.5 μg. However, there were no significant differences among the total numbers of oviposited eggs, though their decreasing tendency was apparent. Therefore, the mating of C. cautella was disturbed more or less even in a limited space such as the glass pot with the synthetic sex pheromone. The reason why the mating disturbance was not attained to 100% was possibly ascribed to the population density in the pot. The synthetic sex pheromone may have no effect on the eggs laid by the mated females, because of normal adults emerging from them.
日本応用動物昆虫学会の論文
1975-09-25