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Behavioral changes in fish exposed to phytoestrogens

机译：暴露于植物雌激素的鱼的行为变化

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We investigated the behavioral effects of exposure to waterborne phytoestrogens in male fighting fish, Betta splendens. Adult fish were exposed to a range of concentrations of genistein, equol, beta-sitosterol, and the positive control 17 beta-estradiol. The following behaviors were measured: spontaneous swimming activity, latency to respond to a perceived intruder (mirror reflection), intensity of aggressive response toward a perceived intruder, probability of constructing a nest in the presence of a female, and the size of the nest constructed. We found few changes in spontaneous swimming activity, the latency to respond to the mirror, and nest size, and modest changes in the probability of constructing a nest. There were significant decreases, however, in the intensity of aggressive behavior toward the mirror following exposure to several concentrations, including environmentally relevant ones, of 17 beta-estradiol, genistein, and equol. This suggests that phytoestrogen contamination has the potential to significantly affect the behavior of free-living fishes. (c) 2006 Elsevier Ltd. All rights reserved.
机译：我们调查了雄性斗鱼（Betta splendens）暴露于水性植物雌激素的行为影响。成年鱼暴露于一定浓度的染料木黄酮，牛尿酚，β-谷甾醇和阳性对照17β-雌二醇。测量以下行为：自发游泳活动，对感知到的入侵者的反应潜伏期（镜面反射），对感知到的入侵者的攻击反应强度，在雌性存在的情况下建造巢的概率以及所筑巢的大小。我们发现自发游泳活动的变化，对镜子的反应时间以及巢的大小几乎没有变化，而筑巢的概率也没有多少变化。然而，暴露于17种β-雌二醇，染料木黄酮和雌马酚的几种浓度（包括与环境相关的浓度）后，对镜子的攻击行为强度显着降低。这表明植物雌激素污染有可能显着影响自由生存鱼类的行为。 （c）2006 Elsevier Ltd.保留所有权利。

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