共查询到17条相似文献,搜索用时 9 毫秒
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Shan Dan Wei Wang Jinghui Ren Yali Li Hua Hu Zhengfeng Xu Tze Kin Lau Jianhong Xie Weihua Zhao Hefeng Huang Jiansheng Xie Luming Sun Xiaohong Zhang Weipeng Wang Shixiu Liao Rong Qiang Jiangxia Cao Qiufang Zhang Yulin Zhou Haiyan Zhu Mei Zhong Yi Guo Linhua Lin Zhiying Gao Hong Yao Hongyun Zhang Lijian Zhao Fuman Jiang Fang Chen Hui Jiang Songgang Li Yingrui Li Jun Wang Jian Wang Tao Duan Yue Su Xiuqing Zhang 《黑龙江环境通报》2012,32(13):1225-1232
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Sung Kim Chen Zhao Allan T. Bombard Charles Cantor Dirk van den Boom Cosmin Deciu 《黑龙江环境通报》2013,33(13):1310-1313
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Ioannis Papoulidis Elisavet Siomou Alexandros Sotiriadis George Efstathiou Anastasia Psara Eirini Sevastopoulou Eleftherios Anastasakis Stavros Sifakis Theodora Tsiligianni Maria Kontodiou Christine Malamaki Maria Tzimina Michael Bjorn Petersen Emmanouil Manolakos Apostolos Athanasiadis 《黑龙江环境通报》2012,32(7):680-685
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The concentration of yolk steroids was suggested to influence offspring gender in oviparous animals subject to both temperature-dependent sex determination (TSD) and genotypic sex determination (GSD). However, the proposed mechanisms of steroid effects are thought to differ between TSD and GSD: a direct effect of oestrogens on gonad feminisation in TSD species vs a differential induction of male-producing or female-producing gametes in GSD species. Geckos offer an ideal opportunity for testing these suggested mechanisms. Closely related gecko species differ in their modes of sex determination. They lay clutches of two synchronously formed eggs; both eggs share equal steroid levels. If identical hormonal composition and environment during vitellogenesis, gravidity and incubation determine the sex of the progeny, siblings should share the same gender in both TSD and GSD geckos. We found strong support for this prediction in a TSD gecko species. Among clutches that were incubated at the temperature that produced both sexes, there were no clutches with siblings of the opposite sex. On the other hand, about half of the clutches yielded siblings of the opposite sex in four GSD species. These results suggest that sex-determining systems constrain the ability of the female to produce single-sex siblings and, hence, it seems that the GSD mechanism constrains the opportunities for sex ratio manipulation in geckos via yolk steroid manipulation. 相似文献
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Gabriela E. Jones Hatem A. Mousa Helen Rowley Peter Houtman Pradeep C. Vasudevan 《黑龙江环境通报》2015,35(13):1336-1341