Fishing pattern and environmentally friendly analysis on mud crab (Scylla spp.) fishery in Mojo mangrove ecosystem, Pemalang Regency, Central Java, Indonesia

Trisnani Dwi Hapsari,Azis Nur Bambang,Abdul Ghofar,Aristi Dian Purnama Fitri,B Warsito,T Triadi Putranto,Sudarno Sudarno

doi:10.1051/e3sconf/202020202003

Abstract

The high market demand of mud crabs has led to increase the capture so that their availability in the wild is threatened. The purpose of this study was to determine the fishing pattern of mud crabs and analyze the environmentally friendly of mud crab catching units in Mojo mangrove ecosystem. Data analysis used descriptive analysis to analyze the fishing pattern and analysis of the level of environmentally friendly based on nine FAO criteria. From the research it is known that the peak season of mud crabs fishing occurs during the west monsoon season and the usual season during the east monsoon season, while the famine season at the end of the east monsoon season. Observation results indicate that the majority of mud crabs caught are not in accordance with regulations (size <12 cm) with 70% of the total catch of mud crabs for soft shell crab farming needs. Based on environmental analysis of fishing gear, it is known that crab traps, trammel net, crabbing with a line and scoop net are environmentally friendly fishing gear with a score of 32.37, 26.81 and 32.40. However, there are criteria that do not meet environmentally friendly scores, namely the capture of mud crabs of a prohibited size and many non-target species caught with trammel net fishing gear.

Highlights

The Mojo mangrove ecosystem is one of the potential sources of mangrove crabs or mud crabs that have high economic value
The activity of catching mud crabs in Pemalang Regency has increased in intensity since the business of mud crab fattening and soft-shell crab cultivation activities developed in Mojo Village, Ulujami District since 2005
Observation results indicate that the majority of mud crabs caught are not in accordance with regulations with 70% of the total catch of mud crabs for soft shell crab farming needs

Summary

Introduction

The Mojo mangrove ecosystem is one of the potential sources of mangrove crabs or mud crabs that have high economic value. The activity of catching mud crabs in Pemalang Regency has increased in intensity since the business of mud crab fattening and soft-shell crab cultivation activities developed in Mojo Village, Ulujami District since 2005. The high market demand both locally and globally has led to an increase in the capture of mud crabs so that their availability in the wild is threatened. Year 2015 and Regulation No 56 Year 2016), mud crab fishing can be done with the provisions of carapace widths above 12 cm or weights above 150 grams per individual. In reality many fishermen do not comply with these regulations, causing overfishing of mud crab resources

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