WCPO bigeye and yellowfin tuna stocks remain healthy

Categories News, NewsPosted on

Republished from FFA Trade and Industry Newsvolume 13, issue 4, July–August 2020

WCPFC’s 16th Scientific Committee (SC16) was held virtually from 12–19 August 2020. During this meeting new WCPO bigeye and yellowfin stock assessments were presented by the Secretariat of the Pacific Community (SPC), indicating that both stocks remain healthy.

The previous full stock assessment for bigeye was conducted in 2017. It indicated a positive change in WCPO bigeye stock status to ‘healthy’ from ‘overfished’, with overfishing occurring. For the 2020 assessment, median values of relative recent spawning biomass (2015–2018) and fishing morality (2014–2017) indicate that the bigeye stock remains not overfished (with 100% probability) and likely continues to not be experiencing overfishing (with 87.5% probability).

However, levels of bigeye fishing mortality and depletion differ among the nine regions used in SPC’s stock-assessment models, with higher impacts in the four tropical regions, particularly on juvenile bigeye. Hence, overall bigeye stock status is buffered by lower catches in the temperate regions.

Similarly, the 2020 stock assessment indicates that the WCPO yellowfin stock is not overfished, nor subject to overfishing (both with 100% probability). Like bigeye, yellowfin exploitation is higher in tropical regions where fishing effort is concentrated by the equatorial purse-seine fishery and ‘other’ fisheries (e.g. pole-and-line and handline vessels operating in Indonesia); there is low yellowfin exploitation in temperate regions.

Hence, for both bigeye and yellowfin, SC16 recommended that WCPFC17 continue to consider management measures that reduce fishing mortality from fisheries that take juveniles (i.e. purse-seine fishery) to increase bigeye and yellowfin fishery yields and reduce any further impacts on spawning biomass in the tropical regions.

SC16 also recommended that a precautionary approach be maintained, with bigeye and yellowfin fishing mortality kept at a level that maintains spawning biomass at 2012–2015 levels until the Commission can agree on appropriate target reference points (i.e. the optimal level of spawning biomass or fishing mortality that ensures long-term sustainability of the stock).

The WCPO continues to be the only ocean where stocks of the four key tuna species – skipjack, yellowfin, bigeye and albacore – are deemed to be in a healthy state.

Three-month ban on use and servicing of FADs from 20°N to 20°S begins on 1 July

Categories Media releases, NewsPosted on

Republished from the Western & Central Pacific Fisheries Commission

Federated States of Micronesia, Pohnpei

Deadline: 1 Jul 2019 to 1 Oct 2019

A three-month prohibition on deploying, servicing or setting on FADs shall be in place between 0001 hours UTC on 1 July and 2359 hours UTC on 30 September each year for all purse seine vessels, tender vessels, and any other vessels operating in support of purse seine vessels fishing in exclusive economic zones and the high seas in the area between 20N and 20S.*

*Members of the PNA may implement the FAD set management measures consistent with the Third Arrangement Implementing the Nauru Agreement of May 2008. Members of the PNA shall provide notification to the Commission of the domestic vessels to which the FAD closure will not apply. That notification shall be provided within 15 days of the arrangement being approved.