Effects of spatial–temporal conditions and fishing-vessel capacity on the capture of swimming crabs by using different fishing gear around the waters of Taiwan

IF 1.8 4区环境科学与生态学 Q2 FISHERIES

Marine and Freshwater Research Pub Date : 2023-09-15 DOI:10.1071/mf23064

Muhamad Naimullah, Kuo-Wei Lan, Cheng-Hsin Liao, Yu-Jhen Yang, Chao-Ching Chen, Hon Jung Liew, Mhd Ikhwanuddin

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引用次数: 0

Abstract

Context Swimming crab is a vital fishery resource and a valuable source of income in the southern East China Sea, but it lacks management strategies, especially when using different fishing gear. Aims This study aimed to determine the effects of spatial–temporal conditions and vessel capacity on swimming crabs by using different fishing-gear types in the Taiwan Strait (TS). Methods We used generalised linear mixed models (GLMMs) to investigate data from Taiwanese vessels (2011–2019) on how spatial–temporal conditions and vessel capacity affected the catch of swimming crabs when using trawls, gill-nets and traps. Key results The results showed that the traps (>80.0%) caught more swimming crabs in the TS than did the gill-nets (6.6%) and trawls (8.0%). Additionally, the GLMM analysis showed that Charybdis feriatus, Portunus pelagicus and Portunus sanguinolentus catches by traps and trawls were significantly affected by different fishing locations, climate events, work hours and vessel sizes. However, for gill-nets, spatial–temporal conditions and vessel capacity did not affect the catch of C. feriatus. Conclusions Monitoring fishing efforts and environmental factors is vital to understanding their impacts on marine ecosystems. Implications These findings enable future sustainable crab fishing through harvesting strategy planning, ecosystem management and spatial–temporal governance.

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台湾海域不同渔具对梭子蟹捕获的时空条件及渔船容量影响

梭子蟹是东海南部重要的渔业资源和宝贵的收入来源，但缺乏管理策略，特别是在使用不同渔具的情况下。目的研究台湾海峡不同渔具类型对梭子蟹洄游的时空条件和船舶容量的影响。方法采用广义线性混合模型(glmm)对台湾渔船(2011-2019)的数据进行研究，研究拖网、刺网和陷阱对游蟹捕捞的时空条件和船只容量的影响。重点结果:陷阱捕蟹率为80.0%，刺网捕蟹率为6.6%，拖网捕蟹率为8.0%;此外，GLMM分析显示，不同捕捞地点、气候事件、作业时间和渔船尺寸对feriatus、Portunus pelagicus和Portunus sanguinolentus的捕捞量有显著影响。而刺网的时空条件和渔船容量对沙棘鱼的捕捞量没有影响。结论监测捕捞活动和环境因素对了解其对海洋生态系统的影响至关重要。研究结果为未来可持续的螃蟹捕捞提供了策略规划、生态系统管理和时空治理等方面的支持。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine and Freshwater Research 环境科学-海洋学

CiteScore

4.60

自引率

5.60%

发文量

审稿时长

3.8 months

期刊介绍： Marine and Freshwater Research is an international and interdisciplinary journal publishing contributions on all aquatic environments. The journal’s content addresses broad conceptual questions and investigations about the ecology and management of aquatic environments. Environments range from groundwaters, wetlands and streams to estuaries, rocky shores, reefs and the open ocean. Subject areas include, but are not limited to: aquatic ecosystem processes, such as nutrient cycling; biology; ecology; biogeochemistry; biogeography and phylogeography; hydrology; limnology; oceanography; toxicology; conservation and management; and ecosystem services. Contributions that are interdisciplinary and of wide interest and consider the social-ecological and institutional issues associated with managing marine and freshwater ecosystems are welcomed. Marine and Freshwater Research is a valuable resource for researchers in industry and academia, resource managers, environmental consultants, students and amateurs who are interested in any aspect of the aquatic sciences. Marine and Freshwater Research is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science.