孕产妇供给与化温度相互作用,影响卵性爬行动物的暴露
Josiah M Johnson1,2, Christopher R Smaga1,2, Samantha L Bock1,2
1Savannah River Ecology Laboratory, P.O. Drawer E, Aiken, SC 29802, USA.
Biology letters
|August 9, 2023
概括
化温度会影响美国鱼幼中的含量. 较低的温度导致黄黄和血液中的度更高,突出显示了发育环境对污染物吸收的影响.
科学领域:
- 环境毒理学环境毒理学
- 生态毒理学 生态毒理学
- 生殖生物学 生殖生物学
背景情况:
- 卵性生殖生物中的母体资源分配受胚胎热环境的影响.
- 温度依赖的污染物动态的生态毒理学影响还没有得到充分的研究.
- 美国鱼 (Alligator mississippiensis) 作为爬行动物生态毒理学的模型.
研究的目的:
- 为了研究化温度和母体转移的之间的相互作用.
- 为了确定发育温度对体负荷和化幼的组织分布的影响.
- 评估胚胎热环境在媒介污染物吸收中的作用.
主要方法:
- 从一个被污染的水库中收集了九个的鱼蛋.
- 在促进雌性 (较冷) 和促进雄性 (较温暖) 的温度下化蛋.
- 在卵黄,化血液和各种组织中测量了总 (THg).
主要成果:
- 在较低温度下化的幼在残留黄和血液中THg度较高.
- 大多数组织中的THg度与血液和皮肤THg水平正相关.
- 蛋黄THg度是THg在多个化组织中的显著预测因素.
结论:
- 发育温度显著影响美国鱼的积和分布.
- 胚胎热环境在调解卵性爬行动物的特定组织污染物吸收方面发挥着至关重要的作用.
- 这些发现强调了在对爬行动物的生态毒理风险评估中考虑化条件的重要性.
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