汞和镉对爪哇稻花鱼（Oryzias javanicus）早期生活阶段的影响：一种潜在的热带试验鱼。

Effect of mercury and cadmium on early life stages of Java medaka (Oryzias javanicus): a potential tropical test fish.

机构信息

Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.

出版信息

Mar Pollut Bull. 2011;63(5-12):347-9. doi: 10.1016/j.marpolbul.2011.02.014. Epub 2011 Mar 4.

DOI:10.1016/j.marpolbul.2011.02.014

Abstract

Several organisms have been used as indicators, bio-monitoring agents or test organisms in ecotoxicological studies. A close relative of the well established Japanese medaka, the Java medaka (Oryzias javanicus), has the potential to be a test organism. The fish is native to the estuaries of the Malaysian Peninsula, Thailand, Indonesia and Singapore. In this study, newly fertilised eggs were exposed to different concentrations of Cd and Hg. Observations were done on the development of the embryos. Exposure to low levels of Cd and Hg (0.01-0.05 ppm) resulted in several developmental disorders that led to death. Exposure to ≥1.0 ppm Cd resulted in immediate developmental arrest. The embryos of Java medaka showed tolerance to a certain extent when exposed to ≥1.0 ppm Hg compared to Cd. Based on the sensitivity of the embryos, Java medaka is a suitable test organism for ecotoxicology in the tropical region.

摘要

几种生物已被用作生态毒理学研究中的指示物、生物监测剂或试验生物。与已被广泛应用的日本青鳉（Oryzias latipes）密切相关的爪哇青鳉（Oryzias javanicus），有潜力成为一种试验生物。这种鱼类原产于马来西亚半岛、泰国、印度尼西亚和新加坡的河口。在这项研究中，新受精的卵被暴露在不同浓度的 Cd 和 Hg 中。对胚胎的发育进行了观察。暴露在低浓度的 Cd 和 Hg（0.01-0.05 ppm）下会导致几种发育障碍，导致死亡。暴露在≥1.0 ppm 的 Cd 下会导致立即停止发育。与 Cd 相比，爪哇青鳉的胚胎在暴露于≥1.0 ppm 的 Hg 时表现出一定程度的耐受性。基于胚胎的敏感性，爪哇青鳉是热带地区生态毒理学的合适试验生物。