Mating behavior and sexual selection in a polygamous beetle
Mating behavior and sexual selection in a polygamous beetle作者机构：College of Agriculture Guangxi University Narming 530005 China Institute of Natural Resources Massey University Private Bag 11222 Palmerston North New Zealand College of Natural Resources and Environment South China Agricultural University Guangzhou 510642 China College of Agriculture Yunnan University Kunming 650091 China Library Guangxi University Narming 530005 China
出 版 物：《Current Zoology》 (动物学报（英文版）)
年 卷 期：2013年第59卷第2期
页 面：257-264页
核心收录：
学科分类：0710[理学-生物学] 0832[工学-食品科学与工程（可授工学、农学学位）] 07[理学] 08[工学] 071002[理学-动物学] 083203[工学-农产品加工及贮藏工程]
基 金：国家自然科学基金 广西自然科学基金 Massey University Overseas Research Leave Fund
主 题：Bursa Body length Mating behavior Sexual selection Tarsal length
摘 要：Mating behavior and sexual selection in relation to morphometric traits in a polygamous beetle, Glenea cantor （F.） （Coleoptera： Cerambycidae）, were investigated. Upon encounter, a male approached a female, mounted her, grasped her terminal abdomen with his hind tarsi, and attempted to mate. Successful mating lasted about 3.5 h. Although all traits measured in females and half of traits in males were significantly correlated with mating success, the primary selection on virgin females was the genital trait, thebursa copulatrix length, and that on males was the body length and hind tarsal length. Longer bursa copulatrix accommodated a larger ejaculate, suggesting that this female trait benefits the male that first mates with the female in terms of in- creasing ejaculate size to beat subsequent males in sperm competition. Under a female-biased sex ratio, more than 20% of mat- ings failed within 20s after the male genitalia had been inserted into hers, suggesting that males assess genital features of the re- ：male before insemination and undertake cryptic male mate choice. Larger males were more capable of grasping females and achieving mating. During the premating struggle the male almost always used his hind tarsi to lift the female terminal abdomen to the position for his genitalia to insert, and as a result, males with longer hind tarsi achieved higher mating success [Current Zoolo- gy 59 （2）： 257-264, 2013].
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