Analysis of catch rates of LED lamps using on the falling-net fishing vessels in South China Sea

Chunxi Wang; Qingxiang Chen; Zhengye Xiong; Zhiyu Chen; Rongchun Ye

doi:10.1371/journal.pone.0301434

Analysis of catch rates of LED lamps using on the falling-net fishing vessels in South China Sea

PLoS One. 2024 Apr 4;19(4):e0301434. doi: 10.1371/journal.pone.0301434. eCollection 2024.

Authors

Chunxi Wang¹, Qingxiang Chen², Zhengye Xiong¹, Zhiyu Chen¹, Rongchun Ye¹

Affiliations

¹ School of Electronic and Information Engineering, Guangdong Ocean University, Zhanjiang, Guangdong, China.
² College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, Guangdong, China.

Abstract

Falling nets are a type of fishing gear that appeared and developed rapidly in the northern of South China Sea in the early 1990s. We have developed Light-emitting diode (LED) fishing lamps to replace metal halide (MH) lamps that reduce fuel consumption without reducing the catches. We conducted marine light-fishing experiments in the northern South China Sea during September 20 to 26, 2019 and August 29 to 31, 2021. The results in the first fishing experiment show that there is no significant change in catch of the falling-net fishing vessel when the white LED lamps (with a total power of 36 kW) were used instead of MH lamps (with a total power of 120 kW). Coleoidea catches of the falling-net fishing vessel increased significantly when white LED lamps (with a total power of 36 kW) and cyan LED lamps (with a total power of 6.0 kW) were used. The results in the second fishing experiment show that the total weight of catches of the cyan LED fishing lamps is more than that of the white LED fishing lamps, and the cyan LED light can attract Penaeus merguiensis, Thryssa dussumieri and Sardinella zunasi more effectively than the white LED light.

Copyright: © 2024 Wang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

MeSH terms

Animals
Cephalopoda*
China
Fisheries
Hunting*

Grants and funding

Funding for this study was provided by the Science and Technology Planning Project of Guangdong Province (No. 2015A020216020), Guangdong Ocean University (No. S202010566059) and the Science and Technology Planning Project of Zhanjiang City (No. 2022A05022). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.