Tuna fisheries support one of the most economically and socially important fishing activities worldwide. However, there is now general recognition of the fishing overcapacity in all world oceans and the necessity to reduce exploitation rates to rebuild marine resources. More efficient fisheries management, based on the best scientific knowledge, is needed to support the global rise in tuna demand and to maximize fish production sustainably. Tuna fisheries science has been focused on the development of more realistic population dynamic models, which need accurate biological parameters. Therefore, accurate life history parameters and modelling of biological processes are required to develop robust stock assessments and management advice.

Improving tropical TUNa biological knowledge for eNd-usErS (ITUNNES)
Context
Overview
ITUNNES is aimed to develop the best available scientific advice on tropical tuna biology to reduce single species and ecosystem models’ uncertainties and foster the implementation of effective management measures for tropical tunas at tuna Regional Fisheries Management Organizations (t-RFMOs)
Specific objectives
The ITUNNES project will be structured in three main objectives:
The first objective (O1) of ITUNNES envisages fostering cooperation between European research centres to carry out a coordinated biological sampling within the context of the Regional Coordination Group for Large Pelagics (RCG-LP). Similarly, collaboration with the fishing industry (tropical tuna purse seine, longline, and pole line fisheries) involved in the exploitation of tropical tuna stocks in the Atlantic and Indian Oceans will be promoted in order to secure more widely the size range of fish samples and spatio-temporal aspects of the sampling strategy.
The second objective (O2) of ITUNNES aims to create better scientific knowledge and capacity building of researchers based on standardised and accurate methods and protocols to respond to the needs identified in the different t-RFMOs.
The third objective (O3) of ITUNNES envisages the development of support tools for end-users, ensure that the acquired improvement of certain biological parameters produced in ITUNNES is realistically available for use by the scientific community in stock assessment and in the uncertainty of ecosystem models for tropical tuna management, thus supporting the objectives of the Common Fisheries Policy and other international legislative requirements.
Workplan Structure

Expected results
ITUNNES outcomes will contribute to:
- Creation of a coordinated European sampling network. Building on existing national structures and using the consortium’s extensive knowledge and ambition on tropical tuna biology.
- Production of key biological data and parameters together with products and tools that end-users can apply to reduce uncertainties in biological processes such as growth, reproduction, trophic ecology and population structure of tropical tuna stocks.
- Reducing uncertainties in stock assessment models and ecosystem models for tuna regional fisheries management organisations (t-RFMOs) in the Atlantic and Indian Oceans, improving the sustainable management of these fisheries and the wider ecological and socio-economic implications associated with these resources.
Contribution to EMFAF
- CR10 - Actions contributing to a good environmental status, including nature restoration, conservation, protection of ecosystems, biodiversity, animal health and welfare
- CR12 - Effectiveness of the system for collection, management and use of data
- CR13 - Cooperation activities between stakeholders
- CR21 - Datasets and advice made available
- CR22 - Usage of data and information platforms
Partners
Materials
Funding & Duration
Budget: 599.389€
Max. EMFAF grant: 479.512€
EMFAF-2023-PIA-FISHERIESSCIENTIFICADVICE