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Front. Mar. Sci.
Sec. Marine Fisheries, Aquaculture and Living Resources
Volume 11 - 2024 | doi: 10.3389/fmars.2024.1384046

A study of the effects of light, sound, and bubble curtains on the expulsion effect of Hexagrammos otakii Provisionally Accepted

Li Dai1 Zhen Zhang1 Jianxin Chen2 Yu Zhang2 WenJie Zhang1 Qi Li1 Wei Bai1 Rongyong Zhang1* Hao Xiao2  Jinhu Liu3*
  • 1China Nuclear Power Engineering Co Ltd, China
  • 2Hainan Nuclear Power Co., Ltd, China
  • 3Institute of Oceanology, Chinese Academy of Sciences (CAS), China

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Hexagrammos otakii, this study examined various environmental conditions in an indoor tank. Specifically, different lighting conditions (white, blue, and green light at illumination intensities of 5000 lx, 8000 lx, and 10000 lx) were explored, as well as varied sound conditions (sound frequencies of 150 Hz, 300 Hz, and 450 Hz at different sound pressure levels of 130 dB, 140 dB, and 150 dB) and bubble curtain conditions (air volumes of 60 L/min, 120 L/min, and 180 L/min). Additionally, the expulsion effect of different fish densities (1.56 tails/m 2 , 2.35 tails/m 2 , 3.13 tails/m 2 ) of Hexagrammos otakii was investigated. The findings revealed that the bubble curtain exhibited the most effective expulsion effect on Hexagrammos otakii, with an expulsion rate of (40.4±12.0) %, the highest period of 53%, and an average expulsion distance of 3.0 expulsion intervals when the air volume was 180 L/min and the fish density was 1.56 tails/m 2 . Conversely, the expulsion effect of light and sound on Hexagrammos otakii was found to be insignificant, with the expulsion rate of sound not exceeding 20% and that of light being lower than 15%. These results have implications for the selection and design of fish expulsion equipment in offshore areas, such as those surrounding wind farms and nuclear power plants. Therefore, this study provides valuable scientific reference for resource managers and practitioners in the field.

Keywords: Light, Sound, Bubble curtain, Hexagrammos otakii, Fish Behavior

Received: 08 Feb 2024; Accepted: 18 Apr 2024.

Copyright: © 2024 Dai, Zhang, Chen, Zhang, Zhang, Li, Bai, Zhang, Xiao and Liu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence:
Prof. Rongyong Zhang, China Nuclear Power Engineering Co Ltd, Beijing, 100840, Beijing, China
Mx. Jinhu Liu, Institute of Oceanology, Chinese Academy of Sciences (CAS), Qingdao, China