Effects from a short-term exposure to copper or cadmium in gravid females of the livebearer fish (Gambusia affinis)
Effects from a short-term exposure to copper or cadmium in gravid females of the livebearer fish (Gambusia affinis)
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DOI：
10.1016/j.ecoenv.2015.04.039
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发表时间：
2015-08-01
影响因子：
6.8
通讯作者：
Klerks, Paul L.
中科院分区：
文献类型：
--
作者：
Cazan, Alfy Morales;Klerks, Paul L.
我们调查了10天的母体金属暴露在活轴承西方食蚊鱼的生殖影响。我们暴露怀孕的女性0.15亩M铜或镉，并监测生殖相关的变量在随后的8个月的繁殖季节。雌性产下1-5窝，这一数量不受接触影响。他们的第一窝的大小减少后，暴露于任何金属，而这种影响仍然是明显的第二窝铜暴露的女性。金属暴露的女性也有更多的早产，流产，并含有死亡后代的育雏：这最后两个影响在第二次育雏仍然很明显。镉暴露组雌性的第一胎出生时间缩短，第一次和第二次育雏间隔时间延长，而铜暴露组雌性的第一次和第二次育雏间隔时间无明显变化。这项研究表明，短期金属接触会影响各种生殖措施，而且在雌性接触结束后发育良好的育雏中仍然会发生影响。(C)2015 Elsevier Inc. All rights reserved.
We investigated the reproductive effects of a 10-day maternal metal exposure in the live-bearing western mosquitofish. We exposed gravid females to 0.15 mu M copper or cadmium and monitored reproduction-related variables over the subsequent 8-month breeding season. Females gave birth to 1-5 broods, a number not affected by the exposure. Their first brood's size was reduced following exposure to either metal, while this effect was still evident for the second brood of copper-exposed females. Metal-exposed females also had more premature births, abortions, and broods containing dead offspring: these last two effects were still evident in second broods. The time-till-first-birth was reduced while the time-interval between first and second brood was increased in cadmium-exposed females, but not in copper-exposed ones. This study demonstrated that short-term metal exposure affects a variety of reproductive measures and that effects can still occur in broods that developed well after the end of the females' exposure. (C) 2015 Elsevier Inc. All rights reserved.