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PI 1.2.4 Assessment of Stock Status

ToolGear TypeTopicUseResource TypeFeatured
ToolGear TypeTopicUseResource TypeFeatured
A Preliminary Analysis of the Relationship Between the Number of FAD Deployments and the Number of FAD Sets for the EPO Purse-Seine Fishery (PDF)

Purse SeineFADsPreassessmentOther Papers0
A novel index of abundance of juvenile yellowfin tuna in the Atlantic Ocean derived from echosounder buoys (PDF)

Example of PS CPUE (YFT) index derived from echosounder data

Purse SeineOperational DataFIP ActionsOther Papers0
A novel index of abundance of skipjack in the Indian Ocean derived from echosounder buoys (PDF)

Example of PS CPUE (SKJ) index derived from echosounder data

Purse SeineOperational DataFIP ActionsOther Papers0
Acoustic Discrimination Technology to Support Selective Fishing (infographic)

Purse SeineAcousticsFIP ActionsInfographics0
Acoustic Discrimination Timeline: Research and Publications (infographic)

Purse SeineAcousticsFIP ActionsInfographics0
Addressing FAD Ecological Impacts (Infographic)

This infographic explains how tuna fishers use FADs and lists four main ways that FADs affect non-target species (such as sharks and sea turtles) and ocean ecosystems.

Purse SeineFADsFIP ActionsInfographics0
Behavior of skipjack (Katsuwonus pelamis), yellowfin (Thunnus albacares), and bigeye (T. obsesus) tunas associated with drifting fish aggregating devices (dFADs) in the Indian Ocean, assessed through acoustic telemetry

Purse SeineAcousticsFIP ActionsOther Papers0
Behaviour and Vulnerability of Target and Non-Target Species at Drifting Fish Aggregating Devices (FADs) in the Tropical Tuna Purse Seine Fishery Determined by Acoustic Telemetry

Purse SeineAcousticsFIP ActionsOther Papers0
Collaborative Study of Tropical Tuna CPUE from Multiple Indian Ocean Longline Fleets in 2017

LonglineOperational DataFIP ActionsOther Papers0
Collaborative study of bigeye tuna CPUE from multiple Atlantic Ocean longline fleets in 2018

LL CPUE joint indice (See Vol. 75 No.7, SCRS/2018/058)

LonglineOperational DataFIP ActionsOther Papers0
Collaborative study of yellowfin tuna CPUE from multiple Atlantic Ocean longline fleets in 2019

LL CPUE joint indice (See Vol. 76 No.6, SCRS/2019/081)

LonglineOperational DataFIP ActionsOther Papers0
Collective Best Practices for Well-Managed FAD Fisheries Guide (PDF)

Best practices for Fish Aggregating Device (FAD) fisheries collaboratively developed by the NGO Tuna Forum

Purse SeineGeneralFIP ActionsOther Papers0
Electronic Monitoring Vendors and Data Submission Information

EMS vendors & providers (pp. 1-2)
FAD tracking & echosounder biomass data format guidance (pp. 5-6)
FAD tracking and echosounder biomass data tRFMO recipients (pp. 3)
LL Bycatch raw Data tRFMO recipients (pp. 4)

Longline, Purse SeineBycatch all, EMS, FADsFIP ActionsVoluntary Data Guidelines0
Fishery Improvement Projects website

Platform with information on the progress of some tuna fishery improvement projects.

Gillnet, Longline, Pole and Line, Purse SeineGeneralFIP Actions, PreassessmentNON-ISSF Tools0
Fisheryprogress.org Website and Resources

Platform with information on the progress of global fishery improvement projects, as well as resources for FIPs and buyers.

Gillnet, Longline, Pole and Line, Purse SeineGeneralFIP Actions, PreassessmentNON-ISSF Tools0
Full Tuna Retention

PVR column that displays level of compliance with ISSF's requirement on full tuna (skipjack, yellowfin and bigeye) retention as per ISSF Conservation Measure 3.3

Purse SeineRetention / UtilizationFIP Actions, PreassessmentProActive Vessel Register / Column0
How Far Are We from Discriminating Tuna Species at FADs?

At the link, see p. 35 in Doc. No. j-FAD_07/2017.

Purse SeineAcousticsFIP ActionsOther Papers0
ICCAT North Atlantic Albacore Management Strategy Evaluation Process (PDF)

Gillnet, Longline, Pole and Line, Purse SeineManagement Strategy EvaluationPreassessmentNON-ISSF Tools0
ISSF 2012-10: Report of the 2012 Stock Assessment Workshop. Understanding Purse Seine CPUE

Purse SeineStock StatusFIP Actions, PreassessmentOther Workshops0
ISSF 2013-03: Report of the 2013 Stock Assessment Workshop. Harvest Control Rules and Reference Points for Tuna RFMOs

Gillnet, Longline, Pole and Line, Purse SeineStock StatusFIP Actions, PreassessmentOther Workshops0
ISSF 2014-12: Exploration of Market Viability for the Full Retention of Non-Tuna Species in Purse Seine Fisheries

Purse SeineRetention / UtilizationFIP ActionsTechnical Reports0
ISSF 2014-14: Report of the 2014 Meeting of the Indian Ocean Skipjack MSE Advisory Committee

Gillnet, Longline, Pole and Line, Purse SeineManagement Strategy EvaluationFIP Actions, PreassessmentTechnical Reports0
ISSF 2016-16: Implementation of Pilot Projects to Explore the Market Viability of Full-Retention of Non-Tuna Species in Purse Seine Fisheries

Purse SeineRetention / UtilizationFIP ActionsTechnical Reports0
ISSF 2018-15: 2018 ISSF Stock Assessment Workshop: Review of Current t-RFMO Practice in Stock Status Determinations

Gillnet, Longline, Pole and Line, Purse SeineStock StatusFIP Actions, PreassessmentOther Workshops0
ISSF 2018-18: Reporting and Transparency of Catch and/or Effort Quotas in Tuna RFMOS: A Survey Paper

Gillnet, Longline, Pole and Line, Purse SeineAllocation, CapacityFIP Actions, PreassessmentTechnical Reports0
ISSF 2019-08: Report of the International Workshop on Mitigating Environmental Impacts of Tropical Tuna Purse Seine Fisheries | Rome, Italy, 12-13 March 2019

The workshop focused on six sessions: (1) Bycatch of the tuna purse seine fishery, (2) sharks and rays, (3) small bigeye and yellowfin tuna, (4) FAD structure impacts, (5) FAD management, and, (6) looking ahead: the next 10 years. Hyperlink to presentations available in the Introduction section of the report.

Purse SeineFADsPreassessmentTechnical Reports0
ISSF 2020-10: Recommended Best Practices for Tuna Longline Fisheries in Transition to MSC Certification

LonglineGeneralFIP ActionsTechnical Reports0
ISSF 2020-11: Recommended Best Practices for Tropical Tuna Purse Seine Fisheries in Transition to MSC Certification, with Emphasis on FADs

This document summarizes recommended best practices for tropical tuna FAD fisheries, linked to MSC Performance Indicators.

Purse SeineGeneralFIP ActionsTechnical Reports0
ISSF 2020-15: Information and monitoring best practices for tropical tuna purse seine fisheries relative to the MSC standard

This paper describes best-practice monitoring activities for each MSC PI based on data needs, as well as to identify data monitoring systems, sources, and technology that can be used to collect this information.

Purse SeineGeneralFIP ActionsTechnical Reports0
ISSF 2022-02: ISSF responsible fishing guidelines for tuna longline fisheries

Key recommendations and best practices, useful for improving scores against the MSC standard or to address common weaknesses in FIP Action Plans

Purse SeineGeneralFIP ActionsTechnical Reports0
ISSF 2023-02: An Evaluation of the Sustainability of Global Tuna Stocks Relative to Marine Stewardship Council Criteria (Principle 1 and Principle 3)

Gillnet, Longline, Pole and Line, Purse SeineGeneralPreassessmentTechnical Reports0
ISSF 2023-10: Recommended Best Practices for FAD Management in Tropical Tuna Purse Seine Fisheries (Update to 2019-11)

This report provides practical examples that fleets could adopt as their FAD management policies. It is an update of ISSF Technical Report 2019-11.

Purse SeineGeneralFIP Actions, PreassessmentTechnical Reports0
ISSF Conservation Measure 1.2: RFMO Participation

Gillnet, Longline, Pole and Line, Purse SeineComplianceFIP Actions, PreassessmentISSF Conservation Measures0
ISSF Conservation Measure 2.4: Supply Chain Transparency, Audit, Reporting and Purchase Requirements

Gillnet, Longline, Pole and Line, Purse SeineGeneralFIP Actions, PreassessmentISSF Conservation Measures0
ISSF Conservation Measure 3.1: Sharks

Gillnet, Longline, Pole and Line, Purse SeineBycatch allFIP Actions, PreassessmentISSF Conservation Measures0
ISSF Conservation Measure 3.3: Full Retention of Tunas

Gillnet, Longline, Pole and Line, Purse SeineBycatch allFIP Actions, PreassessmentISSF Conservation Measures0
ISSF Conservation Measure 3.7: Transactions with Vessels or Companies with Vessel-Based FAD Management Policies

Purse SeineFADsFIP Actions, PreassessmentISSF Conservation Measures0
ISSF Conservation Measure 7.1 (a): Controlled Vessels - Purse Seine and Supply & Tender

Purse SeineGeneralFIP Actions, PreassessmentISSF Conservation Measures0
ISSF Conservation Measure 7.1 (b): Controlled Vessels - Longline

LonglineGeneralFIP Actions, PreassessmentISSF Conservation Measures0
ISSF Glossary

Gillnet, Longline, Pole and Line, Purse SeineGeneralFIP Actions, PreassessmentGlossary0
Improving communication: the key to more effective MSE processes (PDF)

Gillnet, Longline, Pole and Line, Purse SeineManagement Strategy EvaluationFIP ActionsOther Papers0
Longline FIPs Best Practices checklist

Checklist of actions that Longline FIPs can perform to achieve high-level best practices with the objective of achieving MSC certification.

LonglineGeneralFIP Actions, PreassessmentChecklist0
Marine Stewardship Council Guidance for Using the MSC Benchmarking and Tracking Tool (BMT) (PDF)

Tool to benchmark and track fisheries as they progress towards sustainability and MSC certification

Gillnet, Longline, Pole and Line, Purse SeineGeneralFIP Actions, PreassessmentNON-ISSF Tools0
OnBoard SPC App

Electronic fishing logsheet and e-reporting for the WCPFC area. This app allow longline vessels to connect and send data to Tufman 2 Database.

LonglineGeneralFIP ActionsNON-ISSF Tools0
Options for Managing FAD Impacts on Target Tuna Stocks (PDF)

Purse SeineFADsFIP ActionsOther Papers0
Potential Use of Cannery Receipt Data for the Scientific Work of the WCPFC (PDF)

Longline, Pole and Line, Purse SeineOperational DataFIP ActionsOther Papers0
ProActive Vessel Register (PVR)

Fishing vessels can register on the this public vessel list to show how they are following best practices that support sustainable tuna fisheries.

Gillnet, Longline, Pole and Line, Purse SeineGeneralFIP Actions, PreassessmentProActive Vessel Register / Column0
Purse Seine FIPs Best Practices checklist

Checklist of actions that Purse Seine FIPs can perform to achieve high-level best practices with the objective of achieving MSC certification.

Purse SeineGeneralFIP Actions, PreassessmentChecklist0
RFMO Position Statements

Gillnet, Longline, Pole and Line, Purse SeineAdvocacyFIP ActionsAdvocacy0
Report of the Expert Consultation Workshop on Management Strategy Evaluation (PDF)

Gillnet, Longline, Pole and Line, Purse SeineManagement Strategy EvaluationPreassessmentOther Papers0
Report on analyses of the 2016/2021 PNA FAD tracking programme (24July-10Aug) - Rev.01

Example of analyses of FAD trajectory data provided to RFMO scientific bodies

Purse SeineFADsFIP Actions, PreassessmentNON-ISSF Tools0
Research proposal: an evaluation of data from ISSF-affiliated canneries for use in tuna fisheries management (PDF)

Ongoing assessment of the usage of cannery sales data as a complementary dataset in support of tuna fisheries management.

Gillnet, Longline, Pole and Line, Purse SeineOperational DataFIP ActionsOperational Data0
Retaining Bycatch to Avoid Wastage of Fishery Resources: How Important Is Bycatch Landed by Purse-Seiners in Abidjan? (PDF)

Purse SeineRetention / UtilizationPreassessmentOther Papers0
Review of Purse Seine Logbooks Used in the ICCAT Area and Recommendations for a Harmonised Form (PDF)

Purse SeineGeneralFIP ActionsOther Papers0
Target strength of skipjack tuna (Katsuwanus pelamis) associated with fish aggregating devices (FADs)

Purse SeineAcousticsFIP ActionsOther Papers0
Towards Acoustic Discrimination of Tuna Species at FADs: Measuring Acoustic Properties of Yellowfin Tuna (PDF)

Purse SeineAcousticsFIP ActionsOther Papers0
Vessels in Other Sustainability Initiatives (VOSI) FIP

Fishing vessels can register on this public vessel list to show they are operating in Marine Stewardship Council (MSC)-certified fisheries, participating in Fishery Improvement Projects (FIPs), or both.

Gillnet, Longline, Pole and Line, Purse SeineGeneralFIP ActionsVOSI0
What Does Well-Managed FAD Use Look Like within a Tropical Purse Seine Fishery? (PDF)

Purse SeineGeneralFIP Actions, PreassessmentOther Papers0
Who Determines Sustainability? (PDF)

Publication on history and status of fishery certifications (including MSC) and FIPs

Gillnet, Longline, Pole and Line, Purse SeineGeneralPreassessmentNON-ISSF Tools0