Swiss Federal Research Station, CH-8820, Wädenswil, Switzerland.
J Chem Ecol. 1988 May;14(5):1359-66. doi: 10.1007/BF01020140.
Sex gland extracts ofOstrinia nubilalis females collected in the wild or laboratory-reared from Switzerland, Italy, and Hungary were analyzed. Individuals collected in the north of Switzerland contained (Z)- and (E)-11-tetradecenyl acetate at the approximate ratio of 97∶3 (Z type), in accordance with field responses of males and previous findings. On the other hand, females from a laboratory culture derived from field collections made in the same area and reared for four to five generations contained theZ andE isomers at ratios of ca. 3∶97 and 35∶65, respectively. In the south, one of the eight wild females analyzed was of theZ type and the rest intermediate, whereas males were predominantly trapped with blends of the two isomers containing 60 to 97E. In a laboratory culture reared for one to two generations from corn borers collected in Hungary, three of nine females were of the intermediate type and the restZ. Small amounts of (Z)-11-hexadecenyl acetate were detected in female glands of theE strain; however, no effect of this compound could be observed in the field.
对瑞士、意大利和匈牙利野外或实验室饲养的玉米螟雌虫的生殖腺提取物进行了分析。在瑞士北部采集的个体中，（Z）-和（E）-11-十四碳烯基乙酸酯的比例约为 97∶3（Z 型），这与雄虫的田间反应和先前的发现一致。另一方面，来自同一地区野外采集并经过四到五代实验室饲养的种群的雌性个体中，Z 和 E 异构体的比例分别约为 3∶97 和 35∶65。在南部，分析的 8 只野生雌性个体中有 1 只为 Z 型，其余为中间型，而雄性个体则主要以两种异构体的混合物捕获，其中含有 60 至 97E。在从匈牙利采集的玉米螟饲养的一个经过一到两代的实验室种群中，9 只雌性中有 3 只为中间型，其余为 Z 型。在 E 株的雌性腺体中检测到少量（Z）-11-十六碳烯基乙酸酯；然而，在田间没有观察到这种化合物的影响。
