Effects of Exposure to WwTW Effluents over Two Generations on Sexual Development and Breeding in Roach Rutilus rutilus
Effects of Exposure to WwTW Effluents over Two Generations on Sexual Development and Breeding in Roach Rutilus rutilus
复制标题
两代以来暴露于污水处理厂废水对金丝蟑螂性发育和繁殖的影响
DOI：
10.1021/acs.est.5b03777
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发表时间：
2015
影响因子：
11.4
通讯作者：
Hamilton P
中科院分区：
文献类型：
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作者：
Hamilton P
暴露于废水处理厂（WwTW）废水中的环境雌激素会引起雄性鱼的女性化反应，包括雄性睾丸中卵子的发育。然而，暴露对鱼类后代的影响尚不清楚。在这项研究中，我们检查了从生命早期到性成熟期间暴露于未稀释的WWTW污水的母亲的蟑螂（Rutilus rutilus）是否改变了性腺女性化的易感性和生殖能力受损。对于来自 WwTW 污水暴露母亲和稀释水暴露母亲的雄性，长达 3 年零 9 个月的污水暴露诱导了男性性腺女性化，尽管双性条件相对温和。无论是暴露于 WwTW 污水还是暴露于稀释水的母蟑螂，其性腺女性化的严重程度均无差异。此外，一项繁殖研究表明，母蟑螂接触污水的繁殖率与母蟑螂接触干净水的繁殖率相同。在这项研究中，蟑螂暴露在污水中3年，能够成功繁殖。我们的研究结果没有提供证据证明 WwTW 污水暴露对雌性生殖系蟑螂的繁殖或性腺破坏的影响，并补充了现有证据表明具有轻度双性条件的雄性蟑螂能够竞争性繁殖。
Exposure to environmental estrogens in wastewater treatment works (WwTW) effluents induces feminized responses in male fish, including the development of eggs in male testes. However, the impacts on the offspring of exposed fish are not well understood. In this study, we examined whether roach (Rutilus rutilus) from mothers that had been exposed to an undiluted WwTW effluent from early life to sexual maturity had altered susceptibility to gonadal feminization and an impaired capacity to reproduce. For males from both WwTW effluent exposed mothers and dilution water exposed mothers, effluent exposure for up to 3 years and 9 months induced feminized male gonads, although the intersex condition was relatively mild. There was no difference in the severity of gonadal feminization in roach derived from either WwTW effluent exposed or dilution water exposed mothers. Furthermore, a breeding study revealed that roach with effluent-exposed mothers reproduced with an equal success as roach with mothers exposed to clean water. Roach exposed to the effluent for 3 years in this study were able to reproduce successfully. Our findings provide no evidence for impacts of WwTW effluent exposure on reproduction or gonadal disruption in roach down the female germ line and add to existing evidence that male roach with a mild intersex condition are able to breed competitively.