%0 Journal Article
%T Effects of Atrazine on Genital Development of Silkworm, Bombyx mori L.<br>阿特拉津对家蚕生殖发育的影响
%A TENG Guo-qin
%A DAI Xuan-ying
%A XU Shi-qing
%A <br>滕国琴
%A 戴璇颖
%A 徐世清
%J 生态毒理学报
%D 2007
%I 
%X In order to research the effects of environmental hormone (EH) on lepidopteron, the author investigated the genital development of silkworm (Bombyx mori L.), by feeding with artificial diet that contains atrazine (AT). The result shows, 1) The LC50 of new hatched larvae after having eaten atrazine 72, 96 and 120 hours is 0.348, 0.326 and 0.234mmol·kg-1, respectively, that is 75.1, 70.3 and 50.5mg·kg-1 respectively. Atrazine has moderate toxicity for silkworm (Bombyx mori L.). 2) Atrazine caused the gonad index of the fifth instar male larvae remarkably elevated, but caused it remarkably reduced in male moths. Seen from the whole generation, the growth of spermary might be affected when the concentration of atrazine is higher than 0.500mmol·kg-1. Atrazine also caused the number of spermoblast increased in the fifth instar larvae and pupae, but caused the number of sperm reduced in moths. The possible reason is that atrazine can hinder the sperm cell from growing to the spermatozoon. 3) The number of ova in the fifth instar larvae and pupae is significantly lower than control groups (p<0.05). The inhibition effects of atrazine on ova development of different developmental stages of silkworm is time-dependent (p<0.05). If the larvae ate atrazine less than 0.40mmol·kg-1, there was no noticeable difference of the number of borne or laid eggs between experimental groups and the controls. However, with the increasing concentration of atrazine, the number of the eggs which cannot be fertilized grows accordingly. It is suggested that the fertility rate of silkworm exposed to atrazine is significantly inhibited. The atrazine functions as estrogen through inhibiting the growth and development of insect gonad and germ cells.
%K environmental hormone
%K atrazine
%K lepidopterous insect
%K Bombyx mori L
%K genital development<br>环境激素
%K 阿特拉津
%K 鳞翅目昆虫
%K 家蚕
%K 生殖发育
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=BEC1F4700DD66C14D137590A0896A0AD&jid=B98D390DF92C35E6DD1987675E4EE86E&aid=C431126260CC489C34135F118F6BEB81&yid=A732AF04DDA03BB3&vid=0B39A22176CE99FB&iid=38B194292C032A66&sid=0C3F9E980968AF79&eid=4AD4BA66429F5627&journal_id=1673-5897&journal_name=生态毒理学报&referenced_num=3&reference_num=30