Scholarlink

<p>The blue swimming crab (<i>Portunus pelagicus</i>), one of Thailand’s most economically significant marine species, is primarily harvested by small-scale fisheries (SSFs). In this study, we investigated seasonal variations in and the influence of environmental factors on catch per unit effort (CPUE) in a gillnet fishery for blue swimming crabs located in Laem Phak Bia, Phetchaburi Province, using detailed logbook data collected from 915 fishing trips between 2018 and 2019. Fishing trips and catch amounts were found to peak during the southwest monsoon season (June–September), with the highest monthly catch recorded in August 2019 at 1148.9&#xa0;kg and the maximum CPUE reaching 0.63 ± 0.32&#xa0;kg/panel. In contrast, catch rates declined during the northeast monsoon (October–February). A generalized linear model (GLM) analysis was applied to the data to assess the relationship between CPUE and environmental variables. Stepwise model selection based on Akaike Information Criterion (AIC) values identified monsoon season and mean wind speed as the most influential predictors of CPUE (final model AIC: −&#xa0;851.96). The model showed significantly higher CPUE during the pre-monsoon and the southwest monsoon seasons compared to the northeast monsoon season. Wind speed had a weak positive relationship with CPUE, but the effect was not statistically significant. These results highlight the influence of monsoon patterns and wind conditions on the small-scale blue swimming crab gillnet fishery in Laem Phak Bia. They also highlight the value of fisher-maintained logbooks as a tool for monitoring and understanding SSFs in coastal Thailand.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Logbook-based assessment of blue swimming crab (Portunus pelagicus) gillnet fishery: a case study of small-scale fishing communities in Laem Phak Bia, Phetchaburi, Thailand

  • 期刊论文

  • 发表日期：

    2025年7月14日

查看全文
  • Thanakorn Sangeamwong,
  • Keigo Ebata,
  • Anukorn Boutson,
  • Dudsadee Leenawarat,
  • Kazuhiko Anraku,
  • Miguel Vazquez Archdale

摘要

The blue swimming crab (Portunus pelagicus), one of Thailand’s most economically significant marine species, is primarily harvested by small-scale fisheries (SSFs). In this study, we investigated seasonal variations in and the influence of environmental factors on catch per unit effort (CPUE) in a gillnet fishery for blue swimming crabs located in Laem Phak Bia, Phetchaburi Province, using detailed logbook data collected from 915 fishing trips between 2018 and 2019. Fishing trips and catch amounts were found to peak during the southwest monsoon season (June–September), with the highest monthly catch recorded in August 2019 at 1148.9 kg and the maximum CPUE reaching 0.63 ± 0.32 kg/panel. In contrast, catch rates declined during the northeast monsoon (October–February). A generalized linear model (GLM) analysis was applied to the data to assess the relationship between CPUE and environmental variables. Stepwise model selection based on Akaike Information Criterion (AIC) values identified monsoon season and mean wind speed as the most influential predictors of CPUE (final model AIC: − 851.96). The model showed significantly higher CPUE during the pre-monsoon and the southwest monsoon seasons compared to the northeast monsoon season. Wind speed had a weak positive relationship with CPUE, but the effect was not statistically significant. These results highlight the influence of monsoon patterns and wind conditions on the small-scale blue swimming crab gillnet fishery in Laem Phak Bia. They also highlight the value of fisher-maintained logbooks as a tool for monitoring and understanding SSFs in coastal Thailand.