板换机和套管机的区别:一种性欲抑制剂(图)

来源:百度文库 编辑:偶看新闻 时间:2024/04/29 19:45:17

An Anti-Aphrodisiac

by Karl Gruber   胡德良

 Think of it as the anti-"Axe effect." Unlike the fragrant body spray some guys douse themselves with to attract women, male plant bugs (Lygus hesperus) deposit something on females that keeps members of the opposite sex away. Now researchers say they've figured out the secret of this sexual deterrent. In the November issue of Animal Behaviour, a team reports the identification of a chemical compound known as myristyl acetate in the male plant bug spermatophore, a capsule containing sperm that is transferred to the female during copulation. When the scientists applied this compound on virgin females, males fled. The "anti-aphrodisiac" doesn't just help the male keep the female to himself; it also prevents other males from wasting their time courting a female that's not going to mate with him. And because plant bugs damage crops across North America, the researchers hope the discovery will lead to new ways to combat the insects without the need for nasty pesticides.  可以将其当作是跟“Axe男士体香露”相反的东西。跟一些家伙喷在自己身上用来吸引女性的体香喷剂不同,雄性草盲蝽往雌性身上放置的物质会让异性躲开。目前研究人员说,他们搞清了这种性欲抑制剂的秘密所在。在11月份出版的《动物行为学》杂志上,一个研究小组报道,他们在雄性草盲蝽的精囊中发现了一种叫做醋酸肉豆蔻酸酯的化合物。精囊里包含精子,交配时可以转移到雌性体内。当科学家们将这种化合物涂抹到尚未交配的雌性草盲蝽身上时,雄性都逃跑了。这种“性欲抑制剂”不但能够帮助某个雄性草盲蝽将雌性据为己有,而且还能够避免其他雄性浪费时间去追求一个无意跟它们交配的雌性。由于草盲蝽对整个北美的作物造成危害,因此研究人员希望该发现将会有助于找到对抗这种昆虫的新办法,而无需使用讨厌的杀虫剂。