Fisheries and Aquatic Sciences

한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
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Introduction of hook size as a tool for management measures of harvest control rules to improve grouper stock in Indonesia

  • Irfan Yulianto (Fisheries Resource Center of Indonesia, Rekam Nusantara Foundation) ;
  • Heidi Retnoningtyas (Fisheries Resource Center of Indonesia, Rekam Nusantara Foundation) ;
  • Dwi Putra Yuwandana (Department of Fisheries Resources Utilization, IPB University) ;
  • Intan Destianis Hartati (Fisheries Resource Center of Indonesia, Rekam Nusantara Foundation) ;
  • Siska Agustina (Fisheries Resource Center of Indonesia, Rekam Nusantara Foundation) ;
  • Mohamad Natsir (Research Center for Fishery, Indonesian National Agency for Research and Innovation (PRP-BRIN)) ;
  • Mochammad Riyanto (Department of Fisheries Resources Utilization, IPB University) ;
  • Toni Ruchimat (Department of Fisheries Resources Management, Jakarta Technical University of Fisheries (Poltek AUP)) ;
  • Soraya Gigentika (Department of Marine Science, University of Mataram) ;
  • Rian Prasetia (Fisheries Resource Center of Indonesia, Rekam Nusantara Foundation) ;
  • Budy Wiryawan (Fisheries Resource Center of Indonesia, Rekam Nusantara Foundation)
  • 투고 : 2023.04.19
  • 심사 : 2023.09.04
  • 발행 : 2023.10.31
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초록

Harvest control rules have been recently developed for some fisheries in Indonesia, including grouper fisheries, and are expected to reverse the trend of declining stocks. One of the proposed options of the harvest control rules is to implement the catch size limit. The catch size limit approach, however, is challenging, unless it is supported also with strong fisheries surveillance, law enforcement, and innovation. The catch size limit approach can be done by implementing changes in fishing methods and gear, including the application of different hook sizes in the hook and line fishing gear. This study examines the impact of different hook sizes on the length at first capture (Lc) and on the bell-shaped maximum selectivity using various selectivity models of the two targeted grouper species (Plectropomus leopardus and Plectropomus maculatus) in the Saleh bay, West Nusa Tenggara, Indonesia. We found that increasing hook size influences the grouper's catch size, increasing the Lc and the bell-shaped maximum selectivity of both species. Based on our findings, hook size can be used as one of the practical tools for grouper management measures, as part of harvest control rules to improve grouper stock in Indonesia.

키워드

과제정보

We thank local enumerators, fishers, and traders in the Labuhan Kuris village, Saleh bay, Indonesia, for their support in conducting data collection. We thank also Provincial Government of the West Nusa Tenggara for their continuous support throughout this study. The authors thank Jessica Pingkan for creating the map of the study area.

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