点篮子鱼(Siganus guttatus)对辽东湾核电厂冷源取水海域海藻生态防治的初步探讨

核电厂冷源取水海域海洋生物的异常暴发，会导致取水口堵塞，严重影响核电厂的正常运行。本文以点篮子鱼（Siganus guttatus）为实验对象，分别进行了室内和野外实验，室内模拟实验探讨了在不同温度（29℃、26℃、23℃、20℃和17℃）条件下点篮子鱼对常见优势藻类长石莼（缘管浒苔）（Ulva linza）的摄食作用，野外原位实验研究了点篮子鱼对长石莼和孔石莼（Ulva pertusa）的摄食行为。通过室内实验可以发现，点篮子鱼对长石莼有较强的摄食能力，并且在适合的生存温度范围内，温度越高摄食率越高，在29℃温度组中，平均摄食率高达7.86%；通过野外实验发现，点篮子鱼在实验海域生长良好，对长石莼和孔石莼喜好程度高且摄食积极。综上所述，点篮子鱼对辽东湾核电厂冷源取水海域具有海藻生态防治的潜力，但具体的实施措施和生态风险评估需要进一步探讨。本研究为核电厂冷源取水海域的海藻生态防治工作提供了理论基础和技术支持。

Primary study on ecological prevention of the algae using Siganus guttatus in the sea area of the water cooling system intake of the nuclear power plant in Liaodong bay

The abnormal bloom of marine organisms in the sea area around the water cooling system of the nuclear power plant can lead to the blockage of the water intake, which affects the normal operation of nuclear power seriously.Our study carried out laboratory experiments and field experiments using Siganus guttatus as the experimental object.We studied the feeding of the fish on the dominant algae Ulva linza under different temperature gradients (29℃, 26℃, 23℃, 20℃ and 17℃) in the laboratorial simulant experiment and the feeding on Ulva linza and Ulva pertusa in situ.We found that Siganus guttatus had the strong ability of feeding Ulva linza in laboratory experiments.In the suitable survival temperature range, the higher temperature resulted into the higher feeding rate.In the 29℃ group, the average feeding rate was as high as 7.86%.In field experiments, it was found that Siganus guttatus grew well and had high preference to Ulva linza and Ulva pertusa.In summary, Siganus guttatus has the potential to prevent the algae boom in the sea area around the water cooling system of the nuclear power plant.However, specific measures and ecological risk assessment need further discussion.This study provided the theoretical basis and the technical support for the prevention.