Last updated on 18 January 2018
In the Eastern Pacific Jumbo flying squid is captured by industrial fleets (i.e., China, Korea, and Japan) off Ecuador, Peru and Chile’s EEZ where they are assessed within each country, (Rosa et al. 2013; Morales-Bojórquez and Pacheco-Bedoya 2016). However, since Dosidicus gigas have a short life cycle (<2 years), are highly migratory, and their recruitment processes are driven by the environment; its assessment and management off EEZs represent a big challenge (Rodhouse 2001; Rosa et al. 2013).
Last updated on 18 January 2017
In Chile, assessments for jumbo flying squid are based hydroacoustic surveys to evaluate both jumbo flying squid and South Pacific hake Merluccius gayi gayi (Tascheri 2012), and are conducted by the Institute of Fisheries Development (Instituto de Fomento Pesquero, IFOP).
Last available IFOP report including data from 2015, used survey abundance index (CPUA), Catch per Unit Effort (CPUE) estimates from industrial and artisanal fleets, catch-at-size per fleet and size-weight data. Three different models were run: a poor-data model based only on catch-data, a Schaefer surplus production model and a weekly depletion model, for intra-annual variations. The poor-data and weekly depletion model estimated similar biomass estimates, which duplicated the estimates obtained by the surplus model (IFOP 2017).
IFOP reports with details of the model used is usually available only upon request, while summary reports are provided by SUBPESCA and the Scientific and Technicall Committee (CCT-RDZCS). The most recent CCT-RDZCS report presents a summary of IFOP assessment, including data from 2016 (CCT-RDZCS 2017) using the same input data and assessment models.
Last updated on 19 August 2019
There are not recommendations and no reference points are set at a whole-stock level.
Last updated on 6 April 2018
In 2013 and under the New General Law on Fisheries and Aquaculture (Ley General de Pesca y Acuicultura, LGPA N° 20.657) a Scientific and Technical Committe of Demersal Resources of the Central-South Region (Comité Científico Técnico de Recursos Demersales Zona Centro-Sur, CCT-RDZCS) was created, in agreement with the Undersecretariat of Fisheries (Subsecretaría de Pesca, Subpesca) and Fisheries Development Institute (Instituto de Fomento Pesquero, IFOP). Discussions held by scientific experts and government representatives are published.
For 2017, IFOP estimated a wide range of acceptable biological catches - from 134,000 to 171,000 tonnes, and MSY between 154,000 to 208,000 tonnes (IFOP 2017). For 2018, the CCT-RDZCS maintained the recommended range from previous years, between 160,000 and 200,000 tonnes, given the uncertainty of stock status (CCT-RDZCS 2017).
Last updated on 06 Apr 2018
There are not formally adopted target and limit reference points for the stock; but relative MSY reference points have been estimated (IFOP 2017).
No stock assessment including the whole stock is yet conducted.
Last updated on 18 January 2017
The stock status could not be determided. Stock assessments for 2015 and 2016 data showed high uncertainty; different models indicate opposite results. In 2016, the Schaefer production model estimates that biomass is 52% of Bmsy, while the poor-data and weekly depletion models indicate that the stock was underexploited (CCT-RDZCS 2017; IFOP 2017).
In Chile, landings are mostly taken by artisanal puse seine and jigs fisheries. Jumbo flying squid has increased its abundance in fishing grounds of traditional fisheries such as the South pacific hake and Chilean Jack mackerel industrial purse seine and trawl fisheries, becoming an important bycatch species. However, currently it is also targeted by these fleets due to the reductiono of their main target species (IFOP 2017).
The existing 200,000t TAC is within the MSY estimates range, considering the high uncertainty of the stock assessment (IFOP 2017). However, recent biological acceptable catch estimates are lower than this TAC and than catch levels from the last three years (~180,000 tonnes) (CCT-RDZCS 2017).
Last updated on 18 Jan 2017
The fishery started in 2001 with the increase of abundance in central-southern area of Chilean waters. In the last years, the availability has been maintained allowing the development of the artisanal fishing especially in regions IV, V and VIII. Artisanal fishing have been contributing to majority of landings but in last years the proportion caught by the industrial sector has been increasing, with purse-seine and trawls capturing jumbo flying squid as a bycatch species, and as a target species more recently, as well (SUBPESCA 2012)(SUBPESCA 2012)(IFOP 2017).
High landings’ values in 2004, 2005 and 2006 (around 174,000; 300,000 and 250,000 tonnes, respectively) coincide with maximum levels of abundance of jumbo flying squid found on the hydroacoustic research campaigns during 2001-2011 for South pacific hake (Tascheri 2012). This increase also matches with the decrease of South pacific hake and hoki in Chilean waters (Sepulveda 2012)(SUBPESCA 2012)(SUBPESCA 2012) (IFOP 2017).
Landings have falled to, and fluctuated around, a mean of 200,000 tonnes since 2004; calculated biomass has dropped to half the values estimated during the peak period, 2001-2004, and remains around 300,000 tonnes since then (IFOP 2017).