Sexual selection and incipient speciation in Hawaiian Drosophila

作     者：Haiyan Nie Kenneth Kaneshiro 

作者机构：Central South University of Forestry and Technology Lab of Insect Systematics and Evolutionary Biology College of Life Science and Technology Pacific Biosciences Research Centre University of Hawaii at Manoa 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2016年第61卷第2期

页      面：125-131页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 

基　　金：supported by the China Scholarship Council(CSC)(2010843314) 

主　　题：形态特征 夏威夷 性别选择 果蝇 早期 标准菌株 物种形成 标准线 

摘      要：We conducted sexual selection experiments to produce strains with high and low mating discrimination in females of laboratory strains of Hawaiian Drosophila, ***, then examined secondary sexual traits of these two lines, and compared them with that of standard line. In order to do this, we screened out super-males which mated successfully with females and with high mating records;and poor males which usually could not mate successfully with females and had low mating records. In the meantime,choosy females were also screened out, which almost never responded to males nuptial dance and were difficult to be mated; but indiscriminate females were on the contrary,which were very ready to accept male s nuptial dance and were very easy to be mated. As a result, by mating supermales with choosy females, we were able to produce the high-line strain; similarly, for the low line, we mated poor males with indiscriminate females and we had a strain that was significantly different from our standard strain within just two generations of selection, i.e., morphological trait differences were measured between the standard strain and the two selected lines, which indicated that mating discrimination has affected secondary sexual traits of the lowline strain significantly: Cilia number on the foretibia of low-line males is significantly different from that of the standard line, which perhaps was the indication of incipient speciation in Hawaiian Drosophila.