厙ぴ勛圖

Menu

Wananga landing Wananga landing
News

Engineering a more sustainable future for commercial fishing

19 October 2021

A prototype juvenile fish sorting system developed by UC Masters of Engineering student Stefano Barfucci as part of a NIWA-led project offers exciting potential as a way to reduce unwanted by-catch.

HOW TO APPLY

The prototype juvenile fish sorting system developed by Stefano Barfucci, UC Masters of Engineering student.

Tighter rules around fishing practices to discourage the catching of smaller fish have been signalled by the Government as part of moves to better protect the natural marine environment and more closely monitor and regulate commercial fishing activity. It is imperative that fishers have access to gear that enables them to catch fish in a more targeted way.

UC Masters of Engineering student Stefano Barfucci Stefano Barfucci, UC Masters of Engineering student

As part of a NIWA-led project aimed at developing new generation sustainable trawl gear, UC Master of Engineering student Stefano Barfucci has been exploring innovative ways to allow undersized juvenile fish to escape directly from the trawl net.

I explored a number of different designs as part of this research, using 3D printing and laser cutting equipment at UCs Department of Mechanical Engineering. I was also able to test some of the concepts within a flume tank at the university to simulate ocean conditions.

The most promising concept was inspired by a cage system devised by Napier fisher Karl Warr. Stefano further refined that system to develop a practical lightweight prototype that can be fitted to traditional mesh netting. It uses flexible panels with rigid openings sized so that smaller fish can swim out. 泭In tests off Napier, the prototype showed promise in being able to release juvenile gurnard.

While there is one precision fish harvesting system available, it can only be used on large purpose-built vessels; Stefano developed his system for use on any commercial fishing boat. It is a cost effective, lightweight and robust solution that is easy to use.

Stefanos research was supervised by Professor Mark Jermy and Associate Professor Don Clucas, who describe him as an excellent student, dedicated to supporting sustainability in fishing.

He has come up with a simple piece of equipment that could be easily mass produced and that fishers could use to avoid catching fish that are not required, says Associate Professor Clucas.

Professor Jermy says the research has been rewarding for all involved: Were really happy to be working on ways of reducing by-catch and it has been great to work with the fishing industry and NIWA.

Unintended bycatch of undersize fish and unwanted species can have a major impact on the sustainability of fish stocks, with discarding of unwanted catch to the sea an issue in many fisheries.


More information
Visit our media enquiries page to contact UC Media.
What to read next
Privacy Preferences

By clicking "Accept All Cookies", you agree to the storing of cookies on your device to enhance site navigation, analyse site usage, and assist in our marketing efforts.