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20th Working Party on Ecosystems and Bycatch Data Preparatory Meeting (WPEB20(DP))

Meeting: 
Working Party on Ecosystems and Bycatch (WPEB)
Meeting year: 
2024
Meeting session: 
2 001
Date: 
Mon, 22/04/2024 - 12:00 to Fri, 26/04/2024 - 16:00
Venue country/city: 
Online/Virtual
Location: 
Zoom
Chairperson: 
Dr Mariana Tolotti
Vice-Chairperson: 
Dr Charlene da Silva & Mr Mohammed Koya
Objective: 

This meeting will comprise both a usual Data preparatory meeting (focused on shortfin mako shark) and a workshop looking at shark bycatch mitigation measures. More detail will follow.

There is currently an issue with registering for this meeting for those who are not from IOTC CPCs or on the pre-approved observer list. For those falling into this category, please contact the Secretariat to register at [email protected] and [email protected]

Deadlines: 
  • Paper titles  are due 30 days before the meeting starts (23 March 2024)
  • Full papers are due 15 days before the meeting starts (7 April 2024)

(all submissions should be sent to [email protected])

  • Français

Documents

Information papers
Reference Title Available on File
IOTC-2018-WPEB14-37 A preliminary stock assessment for the shortfin mako shark in the Indian Ocean using data-limited approaches 12/04/2024
IOTC-2023-WPEB19-20 Historical standardised CPUEs of seven shark species in the Indian Ocean with preliminary catch estimation 12/04/2024
IOTC-2023-WPEB19-23 A review of the effectiveness of gear modifications to reduce shark bycatch mortality in longlining 12/04/2024
IOTC-2024-WPEB20(DP)-INF01 Bycatch mitigation of protected and threatened species in tuna purse seine and longline fisheries 12/04/2024
IOTC-2024-WPEB20(DP)-INF02 Bycatch in longline fisheries for tuna and tuna-like species: a global review of status and mitigation measures 12/04/2024
IOTC-2024-WPEB20(DP)-INF03 Robbing Peter to pay Paul: Replacing unintended cross-taxa conflicts with intentional tradeoffs by moving from piecemeal to integrated fisheries bycatch management 12/04/2024
IOTC-2024-WPEB20(DP)-INF04 Identification of factors influencing shark catch and mortality in the Marshall Islands tuna longline fishery and management implications 12/04/2024
IOTC-2024-WPEB20(DP)-INF05 Analyses of the Potential Influence of Four Gear Factors (leader type, hook type, “shark” lines and bait type) on shark catch rates in WCPO tuna longline fisheries 12/04/2024
IOTC-2024-WPEB20(DP)-INF06 Shark bycatch and mortality and hook bite-offs in pelagic longlines: Interactions between hook types and leader materials 12/04/2024
IOTC-2024-WPEB20(DP)-INF07 Fisheries bycatch of Sharks: Options for Mitigation 12/04/2024
IOTC-2024-WPEB20(DP)-INF08 Monte Carlo simulation modelling of possible measures to reduce impacts of longlining on oceanic whitetip and silky sharks 12/04/2024
IOTC-2024-WPEB20(DP)-INF09 Effects of leader material on catches of shallow pelagic longline fisheries in the southwest Indian Ocean 12/04/2024
IOTC-2024-WPEB20(DP)-INF10 Large-scale experiment shows that nylon leaders reduce shark bycatch and benefit pelagic longline fishers 12/04/2024
IOTC-2024-WPEB20(DP)-INF11 Catch rate and at-vessel mortality of circle hooks versus J-hooks in pelagic longline fisheries: A global meta-analysis 12/04/2024
IOTC-2024-WPEB20(DP)-INF12 Fishing gear modifications to reduce elasmobranch mortality in pelagic and bottom longline fisheries off northeast Brazil 12/04/2024
IOTC-2024-WPEB20(DP)-INF13 Effects of hook and bait on targeted and bycatch fishes in an equatorial Atlantic pelagic longline fishery 12/04/2024
IOTC-2024-WPEB20(DP)-INF14 The effect of hook type and trailing gear on hook shedding and fate of pelagic stingray (Pteroplatytrygon violacea): New insights to develop effective mitigation approaches 12/04/2024
IOTC-2024-WPEB20(DP)-INF15 The effect of circle hooks vs J hooks on the at-haulback survival in the US Atlantic pelagic longline fleet 12/04/2024
IOTC-2024-WPEB20(DP)-INF16 Influence of hook type on catch of commercial and bycatch species in an Atlantic tuna fishery 12/04/2024
IOTC-2024-WPEB20(DP)-INF17 Circle hooks in commercial, recreational and artisanal fisheries: research status and needs for improved conservation and management 12/04/2024
IOTC-2024-WPEB20(DP)-INF18 Circle hook effectiveness for the mitigation of sea turtle bycatch and capture of target species in a Brazilian pelagic longline fishery 12/04/2024
IOTC-2024-WPEB20(DP)-INF19 Effects of 17/0 circle hooks and bait on sea turtles bycatch in a Southern Atlantic swordfish longline fishery 12/04/2024
IOTC-2024-WPEB20(DP)-INF20 Individual and fleetwide bycatch thresholds in regional fisheries management frameworks 12/04/2024
IOTC-2024-WPEB20(DP)-INF21 Phylogeny explains capture mortality of sharks and rays in pelagic longline fisheries: A global meta-analytic synthesis 12/04/2024
IOTC-2024-WPEB20(DP)-INF22 Global governance guard rails for sharks: Progress towards implementing the United Nations international plan of action 12/04/2024
IOTC-2024-WPEB20(DP)-INF23 Postrelease survival, vertical and horizontal movements, and thermal habitats of five species of pelagic sharks in the Central Pacific Ocean 12/04/2024
IOTC-2024-WPEB20(DP)-INF24 Modeling bycatch abundance in tropical tuna purse seine fisheries on floating objects using the Δ method 12/04/2024
IOTC-2024-WPEB20(DP)-INF25 Draft terms of reference for a consultancy to develop a research prioritisation plan for scalloped hammerhead shark 12/04/2024
IOTC-2024-WPEB20(DP)-INF26 Assessing the effects of hook, bait and leader type as potential mitigation measures to reduce bycatch and mortality rates of shortfin mako: a meta-analysis with comparisons for target, bycatch and vulnerable fauna interactions 12/04/2024
IOTC-2024-WPEB20(DP)-INF27 Future Stock Projections of Oceanic Whitetip Sharks in the Western and Central Pacific Ocean (Update on Project 101) 22/04/2024
Meeting documents
Reference Title Available on File
IOTC-2023-WPEB19-22 Historical standardised CPUEs for the Indian Ocean shortfin mako (Isurus oxyrinchus) for 1966 through 1989 with catch estimation 18/04/2024
IOTC-2024-WPEB20(DP)-01a Draft agenda for the 20th Working Party on Ecosystems and Bycatch: Data Preparatory Meeting 08/03/2024
IOTC-2024-WPEB20(DP)-01b_rev3 Draft Annotated agenda of the 20th Working Party on Ecosystems and Bycatch Assessment Meeting 11/04/2024
IOTC-2024-WPEB20(DP)-02_rev3 List of documents of the 20th Working Party on Ecosystems and Bycatch Assessment Meeting 11/04/2024
IOTC-2024-WPEB20(DP)-03 Review of the statistical data and fishery trends for mako shark species 23/04/2024
IOTC-2024-WPEB20(DP)-04 A review of reported effects of pelagic longline fishing gear configurations on target, bycatch and vulnerable species 12/04/2024
IOTC-2024-WPEB20(DP)-05 A cross-taxa assessment of pelagic longline bycatch mitigation measures: conflicts and mutual benefits to elasmobranchs 12/04/2024
IOTC-2024-WPEB20(DP)-07 What’s the catch? Examining optimal longline fishing gear configurations to minimise negative impacts on non-target species 12/04/2024
IOTC-2024-WPEB20(DP)-08 Technical mitigation techniques to reduce bycatch of sharks: there is no silver bullet 12/04/2024
IOTC-2024-WPEB20(DP)-09 Statistical and Monte Carlo Analysis of the Hawaii Deep-Set Longline Fishery with Emphasis on Take and Mortality of Oceanic Whitetip Shark 12/04/2024
IOTC-2024-WPEB20(DP)-10 Review of potential mitigation measures to reduce fishing-related mortality on silky and oceanic whitetip sharks (Project 101) 12/04/2024
IOTC-2024-WPEB20(DP)-11 A review of the influence of wire leaders and shark lines on shark bycatch in pelagic longline fisheries 12/04/2024
IOTC-2024-WPEB20(DP)-12 A review of the effect of circle hooks on retention and at-haulback mortality 12/04/2024
IOTC-2024-WPEB20(DP)-13 Multifacted effects of bycatch mitigation measures on target/non-target species for pelagic longline fisheries and consideration for bycatch management 12/04/2024
IOTC-2024-WPEB20(DP)-14 Effect of pelagic longline bait type on species selectivity: a global synthesis of evidence 12/04/2024
IOTC-2024-WPEB20(DP)-15 Quantitative estimates of post-release survival rates of sharks captured in Pacific tuna longline fisheries reveal handling and discard practices that improve survivorship 12/04/2024
IOTC-2024-WPEB20(DP)-16 Review of research on future projections and potential mitigation measures to reduce fishing related mortality on oceanic whitetip sharks 12/04/2024
IOTC-2024-WPEB20(DP)-17 A summary of key information pertaining to pelagic shark catches, status and management in the IOTC 12/04/2024
IOTC-2024-WPEB20(DP)-19 Information on the catch of shortfin mako (Isurus oxyrinchus) caught by Japanese longline fishery in the Indian Ocean after 2018 12/04/2024
IOTC-2024-WPEB20(DP)-20 Updated fishery indicators for shortfin mako shark (Isurus oxyrinchus) caught by the Portuguese pelagic longline fishery in the Indian Ocean, between 1999-2022: Catch, effort and standardised CPUEs 12/04/2024
IOTC-2024-WPEB20(DP)-21 Updated standardized catch rates of shortfin mako (Isurus oxyrinchus) inferred from the Spanish surface longline fishery in the Indian Ocean during the period 2001-2022 12/04/2024
Datasets
Reference Title Available on File
IOTC-2024-WPEB20(DP)-DATA03 Nominal catches by fleet, year, gear, IOTC area and species 23/04/2024
IOTC-2024-WPEB20(DP)-DATA04 Catch and effort data - vessels using drifting longlines 23/04/2024
IOTC-2024-WPEB20(DP)-DATA05 Catch and effort data - surface fisheries 23/04/2024
IOTC-2024-WPEB20(DP)-DATA06 Catch and effort data - vessels using other gears (e.g., gillnets, lines and unclassified gears) 23/04/2024
IOTC-2024-WPEB20(DP)-DATA07 Catch and effort data - all vessels 23/04/2024
IOTC-2024-WPEB20(DP)-DATA08 Catch and effort data - reference file 23/04/2024
IOTC-2024-WPEB20(DP)-DATA09 Size frequency data - sharks 23/04/2024
IOTC-2024-WPEB20(DP)-DATA10 Size frequency data - reference file 23/04/2024
IOTC-2024-WPEB20(DP)-DATA11 Equations used to convert from fork length to round weight for shark species 23/04/2024
IOTC-2024-WPEB20(DP)-DATA12 Proposed biological parameters for shortfin mako assessment 13/06/2024
Meeting Report
Reference Title Available on File
IOTC-2024-WPEB20(DP)-R[E] Report of the 20th Session of the IOTC Working Party on Ecosystems and Bycatch – Data Preparatory meeting 24/05/2024

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