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首页> 外文期刊>Environmental Pollution >Growth of the damselfly Ischnura heterosticta is better in saline water than freshwater
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Growth of the damselfly Ischnura heterosticta is better in saline water than freshwater

机译：在盐水中，豆娘Ischnura heterosticta的生长比淡水更好。

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Increasing salinity has the potential to affect freshwater organisms. Yet sub-lethal effects of salinity on macro invertebrates are poorly understood. Growth and development of Ischnura heterosticta (Odonata: Coenagrionidae) was experimentally shown to be faster in 5-20 mS/cm than 0.1-1 mS/cm, while in 35 mS/cm all individuals died. In 30 mS/cm about half died and growth was similar to the 0.1 mS/cm treatment. The salinity-growth relationship cannot be explained indirectly, that is salinity affecting the survival of their prey. Tissue content and concentration of Ca, Mg, Na and K in emerged adults showed no evidence of deficiencies at low salinity. Heart beat rate was similar across treatments, except at 35 mS/cm, where it was slower. Respiration and feeding were similar at 0.1, 10 and 30 mS/cm. While there are similarities in I. heterosticta and other species' salinity response, there are differences and studies on more species are urgently needed. (c) 2005 Elsevier Ltd. All rights reserved.
机译：盐度增加可能会影响淡水生物。然而，盐度对大型无脊椎动物的亚致死作用知之甚少。实验表明，异叶异形棘（Odonata：Coenagrionidae）的生长和发育在5-20 mS / cm处比在0.1-1 mS / cm处更快，而在35 mS / cm处所有个体死亡。在30 mS / cm中，约有一半死亡，生长与0.1 mS / cm处理相似。盐度与生长的关系不能间接地解释，即盐度影响其猎物的生存。新生成年人的组织含量和钙，镁，钠和钾的浓度均未显示低盐度缺乏的证据。除35 mS / cm的速度较慢外，其他所有治疗的心跳率均相似。呼吸和进食在0.1、10和30 mS / cm时相似。虽然异交线虫和其他物种的盐度响应存在相似之处，但仍存在差异，因此迫切需要对更多物种进行研究。 （c）2005 Elsevier Ltd.保留所有权利。

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