期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 263, 期 -, 页码 746-753出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2013.10.043
关键词
Ethinylestradiol; Reproductive behaviour; Endocrine disruption; Vitellogenin; Syngnathidae
资金
- Portuguese Foundation for Science and Technology (FCT) [POCI/MAR/60895/2004, PTDC/AAC-CLI/112936/2009, SFRH/BD/31041/2006]
- European Social Fund, under the Operational Program of Human Potential of the Reference National Framework Strategies
- FCT's Programa Ciencia
- Fundação para a Ciência e a Tecnologia [SFRH/BD/31041/2006, PTDC/AAC-CLI/112936/2009, POCI/MAR/60895/2004] Funding Source: FCT
Endocrine disrupting chemicals (EDCs) have been reported to disturb several ecological relevant endpoints. Surprisingly, EDC-induced effects on fish sexual behaviour have been poorly studied despite the fact that even subtle alterations might contribute to a disruption of sexual interactions, thus negatively impacting reproduction. As the few assessments on sexual behaviour have been conducted in species with orthodox sex roles, it might be argued that sex-role reversed species might provide a potentially complementary system to further explore the effects of EDCs on reproduction. In the present study, two pipefish species with distinct degrees of sex-role reversal were selected to further elucidate the impact of chronic EE2 exposure on sexual behaviour and reproduction-related endpoints. The obtained results indicate that, independently of the degree of sex role reversal, courtship behaviour seems to resist oestrogenic chemical exposure. However, exposure to environmentally relevant EE2 levels did induce a complete absence of pregnancies at 18 ng/L. Even though pregnancies were observed at intermediate concentrations, the percentage of non-transferred or misplaced oocytes increased and a dose-dependent decrease of oocyte volume was observed. Imbalances in the oogenesis process, induction of vitellogenin in males and the absence of pregnancies highlight that environmental relevant concentrations of EE2 have the potential to negatively affect pipefish populations, most of them inhabiting coastal areas where oestrogenic contamination is more prevalent. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据