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首页> 外文期刊>Environmental toxicology and chemistry >ALTERATION OF COURTSHIP BEHAVIOR BECAUSE OF WATER ACIDIFICATION AND MINOR EFFECT OF AMMONIUM NITRATE IN THE IBERIAN NEWT (LISSOTRITON BOSCAI)
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ALTERATION OF COURTSHIP BEHAVIOR BECAUSE OF WATER ACIDIFICATION AND MINOR EFFECT OF AMMONIUM NITRATE IN THE IBERIAN NEWT (LISSOTRITON BOSCAI)

机译：伊比利亚newt（LISSOTRITON BOSCAI）中水的酸化作用和硝酸铵的轻微影响，改变了行为

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Although many studies have assessed the effects of water pollution on amphibians, few have focused on the alteration of vital behaviors. Newt species usually display complex courtship behavior that may be altered by sublethal levels of contaminants. We analyzed the effects of ammonium nitrate and water acidification on courtship behavior of the Iberian newt (Lissotriton boscai). We exposed newt couples to three treatments (control, nominal 90 mg N-NO_3NH_4/L, and nominal pH 4) and recorded the occurrence of each of the three courtship phases (orientation, static display, and spermatophore transfer) as well as the latency to initiate courtship, overall courtship time, male perseverance, and female responsiveness. Major effects were observed in the acid treatment. Low pH inhibited orientation. None of the control couples failed to court, whereas 17% of couples from the low-pH treatment did not perform any courtship movement. Latency to initiate courting was twice as high in couples exposed to acidification as in controls. Low pH also affected the overall time of courtship and perseverance time of males in unsuccessful encounters. Ammonium nitrate did not cause any significant effect. Only the female response index and the duration of the tail-fanning movement (the major display during L. boscai courtship) were slightly reduced by the fertilizer. We report a pollution-mediated alteration of courtship behavior, to our knowledge for the first time, in amphibians. This kind of sublethal effect should be considered when estimating potential impacts of water pollution on natural populations.
机译：尽管许多研究评估了水污染对两栖动物的影响，但很少有研究着眼于改变生命行为。 t物种通常表现出复杂的求爱行为，可能会因污染物的致死水平而改变。我们分析了硝酸铵和水酸化对伊比利亚new（Lissotriton boscai）求爱行为的影响。我们对新婚夫妇进行了三种处理（对照，标称90 mg N-NO_3NH_4 / L和标称pH 4），并记录了三个求爱阶段（定向，静态展示和精子转移）中每个阶段的发生情况以及潜伏期开始求爱，求爱的整体时间，男性的毅力和女性的反应能力。在酸处理中观察到主要效果。低pH抑制取向。对照组中没有一对没有求婚，而低pH值的夫妻中有17％没有进行求偶运动。暴露于酸化状态的夫妇的求婚延迟是对照组的两倍。 pH值过低也会影响求偶的总时间和不成功相遇时男性的毅力时间。硝酸铵没有引起任何明显的影响。施肥使雌性反应指数和扇尾运动的持续时间（在博斯凯求爱时的主要表现）略有减少。据我们所知，我们首次报道了两栖动物的污染介导的求爱行为改变。在估算水污染对自然种群的潜在影响时，应考虑这种亚致死作用。

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