H. Ho, R. Tsai, E. Hsu
Apr 1, 2002
Citations
0
Influential Citations
6
Citations
Journal
Zoological Studies
Abstract
In total, 8 components, i.e., dodecyl acetate (12:Ac), (Z)-7-dodecenyl acetate (Z7-12:Ac), tetradecyl acetate (14:Ac), (Z)-7-tetradecenyl acetate (Z7-14:Ac), (Z)-9-tetradecenyl acetate (Z9- 14:Ac), hexadecyl acetate (16:Ac), (Z)-7-hexadecenyl acetate (Z7-16:Ac), and (Z)-11-hexadecenyl acetate (Z11- 16:Ac), were extracted and identified from Acantholeucania loreyi female tips, with Z7-12:Ac, Z9-14:Ac, and Z11- 16:Ac being the 3 major ones. Virgin females initiating calling at 2, 3, 4, or 5 d old, respectively, were analyzed individually for these 3 components via GC. Among different age groups, broad and similar distributions were found both for the titer (X = 121.3 ± 9.4 ng/female, range 66.2~260.5 ng/female) and for the ratio (a combined wash ratio of Z7-12:Ac/Z9-14:Ac/Z11-16:Ac = 14/72/14, range 13-16/70-72/12-17) of the 3 major components. Single components of Z7-12:Ac, Z7-14:Ac, Z9-14:Ac, and Z7-16:Ac elicited strong electroantennogram (EAG) responses in 3-d-old virgin males; the other 4 components, 12:Ac, 14:Ac, 16:Ac, and Z11-16:Ac, elicited little EAG response. A mixture of Z9-14:Ac and Z7-12:Ac (in a ratio of 85/15) elicited an EAG response comparable to that elicited by the female extract, and further addition of Z11-16:Ac to this mixture (in a ratio of 72/14/14) showed no additive effect on the EAG response.