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Article

Catch Efficiency of Multi-Mesh Trammel Nets for Sampling Freshwater Fishes

1
National Agricultural Science Observing and Experimental Station of Chongqing, Fishery Resources and Environmental Science Experimental Station of the Upper-Middle Reaches of Yangtze River, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Science, Wuhan 430223, China
2
School of Environmental Science and Engineering, Hubei Polytechnic University, Huangshi 435003, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Fishes 2023, 8(9), 464; https://doi.org/10.3390/fishes8090464
Submission received: 22 August 2023 / Revised: 13 September 2023 / Accepted: 14 September 2023 / Published: 16 September 2023
(This article belongs to the Special Issue Green Growth and Sustainable Development in Fishery and Aquaculture)

Abstract

A multi-mesh trammel net has been developed and used for sampling freshwater fishes. However, little is known about the catch efficiency of the net. This research investigated the catch efficiency of a multi-mesh trammel net (nominal mesh size; 10.0, 30.0, 50.0, and 70.0 mm) for fish sampling in the Yangtze River of China. Catch composition and factors affecting catch per unit effort based on fish number (CPUEN), weight (CPUEW), and species number (CPUES) were analyzed. The results showed that the net was capable of capturing a wide range of fish sizes (total length, 5.5 to 121.0 cm) and species (n = 50). Increasing soak time from 9.4 to 24.0 h resulted in a decrease in CPUEN and CPUEW while a longer soak time increased CPUES. CPUEN, CPUEW, and CPUES varied significantly with fishing locations. The net provides a potential complement to the current fish sampling techniques used in freshwater ecosystems (e.g., large rivers, lakes, and reservoirs). The findings of this research help to improve our understanding of the catch efficiency of the multi-mesh trammel net and provides insight into better designs for gears and methods for sampling diverse fish sizes and species.
Keywords: catch efficiency; CPUE; multi-mesh trammel net; fish sampling; freshwater fishes catch efficiency; CPUE; multi-mesh trammel net; fish sampling; freshwater fishes

Share and Cite

MDPI and ACS Style

Cheng, Z.; Gao, L.; Yu, L.; Duan, X.; Zhu, F.; Tian, H.; Chen, D.; Liu, M. Catch Efficiency of Multi-Mesh Trammel Nets for Sampling Freshwater Fishes. Fishes 2023, 8, 464. https://doi.org/10.3390/fishes8090464

AMA Style

Cheng Z, Gao L, Yu L, Duan X, Zhu F, Tian H, Chen D, Liu M. Catch Efficiency of Multi-Mesh Trammel Nets for Sampling Freshwater Fishes. Fishes. 2023; 8(9):464. https://doi.org/10.3390/fishes8090464

Chicago/Turabian Style

Cheng, Zhaohai, Lei Gao, Lixiong Yu, Xinbin Duan, Fengyue Zhu, Huiwu Tian, Daqing Chen, and Mingdian Liu. 2023. "Catch Efficiency of Multi-Mesh Trammel Nets for Sampling Freshwater Fishes" Fishes 8, no. 9: 464. https://doi.org/10.3390/fishes8090464

APA Style

Cheng, Z., Gao, L., Yu, L., Duan, X., Zhu, F., Tian, H., Chen, D., & Liu, M. (2023). Catch Efficiency of Multi-Mesh Trammel Nets for Sampling Freshwater Fishes. Fishes, 8(9), 464. https://doi.org/10.3390/fishes8090464

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