Report of the NAFO Working Group on Improving Efficiency of NAFO Working Group Process (E-WG) Meeting

The Chair, Fred Kingston (NAFO Secretariat) opened the meeting on Thursday, 18 March 2021 at 10:00 hours. The Chairs and co-Chairs of the NAFO Working Groups were welcome to the virtual meeting (Annex 1)

Estimation of the reference points for the different OMs in the Cod 3M MSE

This paper presents different methods to estimate the reference points (Blim, Bmsy and Fmsy) to be used in the 3M NAFO cod MSE. Reference points should be specific for each of the possible realities, what defines the different possible realities are the different OMs and, within each OM, the different iterations. The methods presented here try to estimate the reference points by iteration for the different OMs since it is assuming that the reference points will be interpreted as a characteristic of the “real” population. The results of some of the methods proposed to estimate the management reference points (limit and target) seem to be not consistent between them. The results show that in this case the proxy used as Fmsy (F30%SpR) seems quite reasonable

Standardized CPUE Indices for Greenland Halibut in NAFO Regulatory Area of Divisions 3LMNO Based on Spanish Commercial Catch Rates

A standardized CPUE series using a log-linear model for Greenland halibut in NAFO Regulatory Area of Divisions 3LMNO, based on catch and effort data from the Spanish trawl fleet since 1992 is presented. Fixed factors considered in the model were year, month, division, depth stratum and vessel and the interactions included were division*month and division*depth stratum. All of these factors and interactions are statistically significant. The total proportion of variance explained by this model is 46%. The results indicate substantial variability of CPUE over time, with several short periods of increasing and decreasing CPUE. After having reached the lowest value of the series in 2004, standardized CPUE has increased very substantially, reaching a value in 2006 very near the maximum of the entire series

Assessment of the Cod Stock in NAFO Division 3M

An assessment of the cod stock in NAFO Division 3M was conducted using a Bayesian SCAA (statistical catch-at-age) model. The STACFIS catch estimates and the Flemish Cap survey indices were used to fit the model. Blim, defined as the SSB of 2007, was estimated at 15 408 t (median). Results indicate a general increase in SSB since 2005 to the highest value in 2017, decreasing sharply since then. SSB has been above Blim since 2008. Between 2013 and 2018 recruitment was at very low levels; the 2016 and 2018 values were among the lowest of the series; as a consequence, 3-year projections indicate that total biomass will decrease during the projected years, while the SSB could increase under some scenarios in the final projected year. Depending on the projected scenario, probability of SSB being below Blim in 2023 and 2024 is high (≥12%) or very low (≤5%). An increase in recruitment occurred in 2019 and 2020, reaching the 2008 level.Versión del editor

Effects of gelatin origin, bovine-hide and tuna-skin, on the properties of compound gelatin-chitosan films

With the purpose to improve the physico-chemical performance of plain gelatin and chitosan films, compound gelatin-chitosan films were prepared. The effect of the gelatin origin (commercial bovine-hide gelatin and laboratory-made tuna-skin gelatin) on the physico-chemical properties of films was studied. The dynamic viscoelastic properties (elastic modulus G', viscous modulus, G″ and phase angle) of the film-forming solutions upon cooling and subsequent heating revealed that the interactions between gelatin and chitosan were stronger in the blends made with tuna-skin gelatin than in the blends made with bovine-hide gelatin. As a result, the fish gelatin-chitosan films were more water resistant (∼18% water solubility for tuna vs 30% for bovine) and more deformable (∼68% breaking deformation for tuna vs 11% for bovine) than the bovine gelatin-chitosan films. The breaking strength of gelatin-chitosan films, whatever the gelatin origin, was higher than that of plain gelatin films. Bovine gelatin-chitosan films showed a significant lower water vapour permeability (WVP) than the corresponding plain films, whereas tuna gelatin-chitosan ones were only significantly less permeable than plain chitosan film. Complex gelatin-chitosan films behaved at room temperature as rubbery semicrystalline materials. In spite of gelatin-chitosan interactions, all the chitosan-containing films exhibited antimicrobial activity against Staphylococcus aureus, a relevant food poisoning. Mixing gelatin and chitosan may be a means to improve the physico-chemical performance of gelatin and chitosan plain films, especially when using fish gelatin, without altering the antimicrobial properties. © 2011 Elsevier Ltd.Peer Reviewe

Análisis proteómico de células de Hepatoma Huh7 transfectadas con MAT1A.Caracterización de DDX3X como diana de la S-adenosilmetionina

Comunicaciones a comiunicacione

Report of the NAFO Joint Commission-Scientific Council Working Group on Risk-Based Management Strategies (WG-RBMS) Meeting

The meeting was opened by the co-Chairs Fernando González-Costas (European Union) and Ray Walsh (Canada) at 08:30 hours (Atlantic Daylight Time in Halifax, Nova Scotia) on Tuesday, 24 August 2021. The co-Chairs welcomed the representatives from Canada, European Union, Japan, Norway, Russian Federation, United Kingdom and the United States of America. The Scientific Council (SC) Chair, SC Precautionary Approach Working Group (PA-WG) co-Chairs were also welcomed (Annex 1)

Report of the NAFO Commission Ad hoc Working Group to Reflect on the Rules Governing Bycatches, Discards and Selectivity (WG-BDS) in the NAFO Regulatory Area Meeting

The meeting was opened at 10:05 hours (Atlantic Daylight Time in Halifax, Nova Scotia) on Monday, 12 July 2021 by the Chair, Temur Tairov (Russian Federation). He welcomed representatives from Canada, Denmark (in respect of Faroe Islands and Greenland), European Union, Iceland, Japan, Norway, United Kingdom, and the United States of America. The SC Chair and the STACTIC vice Chair were also in attendance (Annex 1)

Report of the NAFO Joint Commission–Scientific Council Catch Estimation Strategy Advisory Group (CESAG) Meeting

The NAFO Joint Commission-Scientific Council Catch Estimation Strategy Advisory Group (CESAG) met via WebEx on 13 April 2021. The meeting was opened at 9:30 hours (Atlantic Daylight Time) by co-Chairs Katherine Sosebee (USA) and Temur Tairov (Russian Federation). Representatives from NAFO Contracting Parties (Canada, European Union, Japan, Ukraine) were in attendance. The Scientific Council Chair was also in attendance (Annex 1)