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首页> 外文期刊>Marine ecology progress series >Intensive fish farming in the Philippines is detrimental to the reef-building coral Pocillopora damicornis
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Intensive fish farming in the Philippines is detrimental to the reef-building coral Pocillopora damicornis

机译：菲律宾的集约化鱼类养殖对造礁珊瑚Pocillopora damicornis有害

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To determine the effects of fish farm effluent on the reef-building species Pocillopora damicornis, we exposed different life stages of the coral to a gradient of effluent concentrations. After 81 d no juvenile coral survived at the Fish Farm site or at the site receiving intermediate concentrations, and survival rates were low (< 20%) at the site receiving minimal effluent concentrations and at the reference site. At the Fish Farm site, juveniles (on terracotta tiles) were completely overgrown by barnacles. Coral nubbins and mature colonies displayed similar survivorship trends along the effluent gradient, i.e. higher mortality with higher effluent concentrations. At the site of intermediate exposure, surviving nubbins had skeletal growth rates half of those from the site of minimal influence and from the reference site. The mean gross photosynthesis to respiration ratio of coral branches deployed at the fish farm was below the physiological compensatory value of 1, whereas values of about 1 were attained at the sites of diminishing effluent influence. Reduced larval output in mature colonies exposed to intermediate and minimal concentrations of fish farm effluent were observed as compared to those from the reference site. No reproductive measurements could be conducted for colonies at the Fish Farm site, due to high mortality. At the larval stage, metamorphosis was diminished both on substrates collected from, and tiles conditioned in, the Fish Farm environment, compared to those from sites of diminishing effluent influence. Hence, many aspects of coral biology are impaired by exposure to effluent from intensive fish farming.
机译：为了确定养鱼场废水对造礁物种Pocillopora damicornis的影响，我们将珊瑚的不同生命阶段暴露于一定浓度的废水中。在第81天之后，没有任何一个幼小的珊瑚在养鱼场处或接受中等浓度的地方生存，并且在最低废水浓度处和参考处的存活率很低（<20％）。在养鱼场现场，藤壶完全长满了少年（赤陶砖）。珊瑚核蛋白和成熟菌落沿出水梯度显示出相似的存活趋势，即随着出水浓度的升高死亡率更高。在中等暴露的部位，存活的核蛋白的骨骼生长速率是影响最小的部位和参考部位的骨骼生长速率的一半。在养鱼场中部署的珊瑚分支的平均总光合作用和呼吸比低于生理补偿值1，而在出水影响减小的位置达到约1。与参考地点相比，在暴露于中等和最低浓度的养鱼场废水的成熟菌落中，幼虫的产量下降。由于死亡率高，无法对鱼类养殖场的殖民地进行生殖测量。在幼体阶段，与从污水影响地点减少的底物相比，从鱼场环境中收集的底物和经过条件处理的瓷砖上的变态现象都减少了。因此，暴露于集约化养殖的废水会损害珊瑚生物学的许多方面。

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