Using DNA to identify bycatch species

Anggini Fuji Astuti at IPB University and Asosiasi Pengelolaan Rajungan Indonesia (APRI) blue swimming crab fishery improvement project

Amount awarded £5,000

This project will identify incidental bycatch species of the blue swimming crab fishery in the Java Sea using environmental DNA (eDNA) techniques. The fishery has been in a fishery improvement project (FIP) for several years led by APRI, with its progress now verified through the In-Transition to MSC Program.  

Surveys in 2016 and 2019 by APRI identified five crustacean species which could be vulnerable to bycatch from the fishery. They become accidentally caught in traps while fishing for blue swimming crab. Other species accidentally caught such as the Jones’ pony fish (Eubleekeria jonesi) are repurposed as bait so are not wasted. However, their use must be at a sustainable level. 

This Student Research Grant will support collection of eDNA samples from the local environment in the Java sea. These will be matched with DNA samples from non-target species interacting with the fishery to determine the level of risk they face from crab fishing.  

The findings will contribute to the stock status for blue swimming crab and improve understanding of the impact of the fishery on the wider environment. This data will be a vital part of how the fishery’s sustainability is assessed against the MSC Fisheries Standard. 

The fishery is also supported through the Fish for Good program; a four-year project supporting more than 25 fisheries across Indonesia, South Africa and Mexico to improve their fishing practices towards sustainability. 

DNA research in Indonesia is still quite limited because of the lack of tools and samples. It requires cooperation with international organisations like MSC which can help add expertise around the data required for sustainable fisheries. The Ocean Stewardship Fund will help facilitate this important DNA research for blue swimming crab stocks.

Anggini Fuiji Asstuti IPB University

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