CCAMLR-42/BG/08 Rev. 1 Plus d'infos |
Fishery Notifications 2023/24 CCAMLR Secretariat
Résumé:
The Secretariat received fishery notifications for exploratory fisheries for toothfish and krill fisheries for 2023/24 CCAMLR season. This paper provides a summary of all fishery notifications with full details available to authenticated users through the CCAMLR website Fishery Notifications.
Soumis par:
Mariana Cordeiro (Secrétariat de la CCAMLR)
Approuvé par:
Mariana Cordeiro (Secrétariat de la CCAMLR)
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2 |
CCAMLR-42/BG/09 Plus d'infos |
Implementation of fishery forecasting procedures during the 2022/2023 season CCAMLR Secretariat
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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2 |
SC-CAMLR-42/02 Rev. 2 Plus d'infos |
Synthèse et recommandations de l'examen indépendant des évaluations de la légine par la CCAMLR réalisé en 2023 Dirk Welsford, président du comité d'examen indépendant
Résumé:
Sur recommandation du SC-CAMLR lors de ses réunions en 2022 (SC-CAMLR-41, paragraphe 4.39), un examen indépendant des évaluations des stocks de légine a été réalisé en août 2023. Trois évaluateurs indépendants mis à disposition par le Centre d'experts indépendants se sont chargés de l'examen. Celui-ci a porté sur les évaluations de Dissostichus eleginoides dans les sous-zones 48.3, 48.4 et 58. Read More
Soumis par:
Mariana Cordeiro (Secrétariat de la CCAMLR)
Approuvé par:
Steve Parker (Secrétariat de la CCAMLR)
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4 |
SC-CAMLR-42/03 Plus d'infos |
Rapport de l’atelier COLTO–CCAMLR sur le marquage (Hobart, Australie, du 14 au 17 mars 2023)
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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4 |
SC-CAMLR-42/04 Plus d'infos |
Rapport du groupe de travail sur les méthodes d'évaluation acoustique et d'analyse (Tokyo, Japon, du 22 au 26 mai 2023)
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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4 |
SC-CAMLR-42/05 Plus d'infos |
Rapport de l'atelier pour les observateurs de la pêcherie de krill (Shanghai, République populaire de Chine, du 19 au 21 juillet 2023)
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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3 |
SC-CAMLR-42/09 Plus d'infos |
Rapport du Groupe de travail sur les statistiques, les évaluations et la modélisation (Cochin, Inde, du 26 au 30 juin 2023)
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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2 |
SC-CAMLR-42/10 Plus d'infos |
Rapport du groupe de travail sur le contrôle et la gestion de l’écosystème (Cochin, Inde, du 3 au 14 juillet 2023) CCAMLR Secretariat |
2 |
SC-CAMLR-42/BG/01 Plus d'infos |
Catches of target species in the Convention Area CCAMLR Secretariat
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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2 |
SC-CAMLR-42/BG/04 Plus d'infos |
Cap-DLISA: A pilot approach to capacity building to support the development of integrated stock assessments for CCAMLR data limited toothfish research fisheries Somhlaba, S., T. Okuda and R. Sarralde
Résumé:
This paper might be taken under agenda item number 8 on other business in WG-FSA
Soumis par:
Sobahle Somhlaba (Afrique du Sud)
Approuvé par:
Sobahle Somhlaba (Afrique du Sud)
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7 |
SC-CAMLR-42/BG/29 Plus d'infos |
Temperature data by depth using demersal longlines. The New Zealand experience in the Ross Sea - first steps Fenaughty, J.M., M. Nyegaard, J. Jakoboski and K. Senga
Résumé:
With the need to monitor and model human induced climate change, an important requirement is the collection of relevant, accurate, and timely data to inform oceanic changes.
While sea-surface data in various forms is generally available from satellite data and other sources such as the Argo system, obtaining Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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4.3.1 |
SC-CAMLR-42/BG/37 Plus d'infos |
Implementation of the Macrourus spp. bycatch cessation rule for the Ross Sea exploratory fisheries CCAMLR Secretariat
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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5.2 |
WG-EMM-2023/14 Plus d'infos |
CCAMLR Marine Debris Monitoring Program, 2023 CCAMLR Secretariat
Résumé:
CCAMLR monitors marine debris in the Convention Area through the Marine Debris Monitoring Program (MDMP) established in 1986. The MDMP compiles data from surveys and opportunistic sightings conducted by Members, fishing gear reported by CCAMLR Scheme of International Scientific Observation (SISO) observers as lost by fishing vessels, and marine debris ( Read More
Soumis par:
Claire Van Werven (Secrétariat de la CCAMLR)
Approuvé par:
Todd Dubois (Secrétariat de la CCAMLR)
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4 |
WG-FSA-2023/01 Plus d'infos |
Advances in reducing the interaction with Killer whales and Sperm whales, in the Patagonian Toothfish fishery in CCAMLR subarea 58.7: application of the SAGO Extreme capture system Troncoso, P., M, Yamandu, O. Pin, A. Loureiro, D. García and L. Orlando
Résumé:
This work is a synthesis of field data on the use of the SAGO Extreme system on board the Uruguayan fishing vessel Ocean Azul. The campaign was carried out during November and December 2022, in CCAMLR subarea 58.7. The impact of predation was assessed by contrasting the catch per unit effort (CPUE, fish weight/hooks) for fishing lines retrieved in the presence of marine Read More
Soumis par:
Alberto Tabaré Lozano Junca
Approuvé par:
Yamandú Marín (Uruguay)
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6 |
WG-FSA-2023/02 Plus d'infos |
Update of the ´SAGO EXTREME` fishing system on the ´Patagonian toothfish` Dissostichus eleginoides fishery. Loureiro, A., P. Troncoso, M. Yamandú and O. Pin
Résumé:
The SAGO EXTREME system emerges in 2016 as a new concept to reduce the marine mammal depredation on bottom longline fisheries. Been installed on the Uruguayan FV Ocean Azul equipped with an auto line fishing gear has been proved and developed since 2020 on toothfish fisheries. The SAGO EXTREME system has evolved with a new lunch procedure that eliminates the contact of the Read More
Soumis par:
Alberto Tabaré Lozano Junca
Approuvé par:
Yamandú Marín (Uruguay)
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6 |
WG-FSA-2023/03 Plus d'infos |
New Fishery Research Proposal Plan Under CM 24-01 Paragraph 3 to Continue the Acoustic-Trawl Survey Champsocephalus gunnari in the Statistical Subarea 48.2 Delegation of Ukraine
Résumé:
Mackerel icefish (Champsocephalus gunnari) is one of the most common and widespread species of Antarctic fish. Ukraine proposes to conduct a local acoustic-trawl survey of Champsocephalus gunnari in the statistical Subarea 48.2, beginning from the 2023/2024 fishing season (optionally from the 2024/ Read More
Soumis par:
Kostiantyn Demianenko (Ukraine)
Approuvé par:
Kostiantyn Demianenko (Ukraine)
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4.1.2 |
WG-FSA-2023/04 Plus d'infos |
Improving identification of fish bycatch in the Antarctic krill fishery Romero Martinez, M.L., P.R. Hollyman, W.D.K. Reid, W.P. Goodall-Copestake, J. Moir Clark and M.A. Collins
Résumé:
Fish bycatch requires accurate information to develop conservation and management strategies. Within the Antarctic krill fishery, larval, juvenile and adult fish are regularly observed as bycatch. Here we describe a research project that addresses key questions in krill fisheries management related to the interactions between early life history stages of fish and the Read More
Soumis par:
Martin Collins (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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5.1 |
WG-FSA-2023/05 Plus d'infos |
2023 trend analysis: Estimates of toothfish biomass in Research Blocks. CCAMLR Secretariat
Résumé:
Biomass estimates for research blocks in data-limited toothfish fisheries and the resulting recommended catch limits for the 2024 season have been determined using the trend analysis decision rules.
Soumis par:
Stéphane Thanassekos (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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4 |
WG-FSA-2023/06 Plus d'infos |
CCAMLR fishery data forms and manuals development status CCAMLR Secretariat
Résumé:
This paper provides a summary of status of current vessel and observer forms and associated manuals, and considers technical advice and updates that may be required to progress future form and manual developments as a result of proposed data collection requirements from the Scientific Committee and its Working Groups.
Soumis par:
Isaac Forster (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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2 |
WG-FSA-2023/07 Rev. 2 Plus d'infos |
Implementation of the CCAMLR Scheme of International Scientific Observation during 2022/23 CCAMLR Secretariat
Résumé:
This paper provides details of the CCAMLR Scheme of International Scientific Observation deployments during the 2023 season (based on data received by the Secretariat up to 9 October 2023). In the 2023 season to date there were 29 longline trips and 19 trawl trips observed. The taxonomic database for species codes was updated, and minor changes were implemented Read More
Soumis par:
Isaac Forster (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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6 |
WG-FSA-2023/08 Plus d'infos |
Core processes illustrations in support of the proposed Agent-Based Modelling framework (WG-SAM-2023/17) Thanassekos, S.
Résumé:
Following the WG-SAM recommendation in 2023 (WG-SAM-2023, paragraph 7.3(i)) to submit a paper describing Agent-Based Models, while focusing on the model presented in WG-SAM-2023/17, this document presents a set of figures designed to illustrate the core components of the model.
Soumis par:
Stéphane Thanassekos (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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4 |
WG-FSA-2023/09 Plus d'infos |
2023 Ross Sea shelf survey results Devine, J. and C. Péron
Résumé:
The time series of relative abundance and age structure from the Ross Sea shelf survey provides information about year class strength, variability, and autocorrelation, and hence is an important input into the Ross Sea stock assessment. The objectives of the survey were to (i) continue monitoring trends in Antarctic toothfish (Dissostichus mawsoni) recruitment in the Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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|
4.3.1 |
WG-FSA-2023/10 Plus d'infos |
A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2023 random stratified trawl survey Maschette, D.
Résumé:
The annual random stratified trawl survey was undertaken in Division 58.5.2 in the vicinity of Heard Island and McDonald Islands during March/April 2023. Based on data from this survey, this paper provides a preliminary assessment for mackerel icefish (Champsocephalus gunnari) population structure, abundance and yield in Division 58.5.2 using standard CCAMLR methods Read More
Soumis par:
Dale Maschette (Australia)
Approuvé par:
Philippe Ziegler (Australia)
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|
4.2.1 |
WG-FSA-2023/11 Plus d'infos |
Age and growth of the subantarctic skates Bathyraja eatonii and B. irrasa in Kerguelen and Amblyraja taaf in Crozet through the use of the vertebrae centrum Faure, J. and C. Péron |
5.2 |
WG-FSA-2023/12 Plus d'infos |
Antarctic toothfish (D.MAWSONI) age determination Misar, N.
Résumé:
A method for age determination of Antarctic toothfish from otoliths based on generally accepted approaches and the proposed process for preparing age samples using modern instruments is presented. Age samples prepared in this way allow more accurate reading of age rings, improve the possibility of more reliable localization of the sites of otolith nucleus formation. As an Read More
Soumis par:
Svetlana Kasatkina (Fédération de Russie)
Approuvé par:
Svetlana Kasatkina (Fédération de Russie)
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4 |
WG-FSA-2023/13 Plus d'infos |
Assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region to 2022/23 Mormede, S., A. Grüss, A. Dunn and J. Devine
Résumé:
This paper reports on the update of the Bayesian sex- and age-structured integrated stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region (RSR; Subareas 88.1 and Small-Scale Research Units (SSRUs) 88.2A-B) using the most recent available data for the RSR Antarctic toothfish fishery. The assessment model used catch data for 1998–2023, Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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|
4.3.1 |
WG-FSA-2023/14 Plus d'infos |
Casal2 Stock Assessment for Antarctic krill in CCAMLR Subarea 48.1 Kinzey, D. and G.M. Watters
Résumé:
The Casal2 model for Antarctic krill initially reported in Kinzey and Watters (2023) now incorporates MCMC estimation of parameter uncertainty in addition to the MPD estimates described in the earlier paper. Four model configurations are explored employing two different methods of estimating annual recruitment multipliers - simplex transformation and non-simplex - and two Read More
Soumis par:
Doug Kinzey (États-Unis d'Amérique)
Approuvé par:
George Watters (États-Unis d'Amérique)
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3 |
WG-FSA-2023/15 Rev. 1 Plus d'infos |
Assessment of Patagonian Toothfish (Dissostichus eleginoides) in Subarea 48.3 Earl, T. and L. Readdy
Résumé:
Assessment of the Patagonian toothfish (D. eleginoides) in Subarea 48.3 indicates that the current status of the stock is at 47% of B0. Projections indicate that a constant catch of 2,000 tonnes in the 2024 and 2025 seasons would be consistent with the CCAMLR decision rule after accounting Read More
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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|
4.1.3 |
WG-FSA-2023/16 Plus d'infos |
Assessment of Patagonian Toothfish (Dissostichus eleginoides) in Subarea 48.3: Assessment Diagnostics Earl, T. and L. Readdy
Résumé:
This paper presents the diagnostics associated with the Casal2 48.3 Patagonian toothfish assessment referred to as the “Final model” in Earl and Readdy, 2023. These diagnostics address the requests from WG-SAM-2023 paragraph 6.33 to include these plots for Casal2 assessments. In addition, approaches are developed for addressing plots indicated in WG-SAM-2023 Read More
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.3 |
WG-FSA-2023/17 Plus d'infos |
Assessment of Patagonian Toothfish (Dissostichus eleginoides) in Subarea 48.4 Readdy, L. and T Earl
Résumé:
This paper describes an update of the assessment of Patagonian toothfish (D. eleginoides) in Subarea 48.4. The assessment data are updated with the observations for the 2021 and 2022 seasons. Projections indicate that the stock was at 59.5% of B0 in 2023 and that a yield of 19 tonnes in 2024 and 2025 is consistent Read More
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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|
4.1.4 |
WG-FSA-2023/18 Plus d'infos |
Assessment of Patagonian Toothfish (Dissostichus eleginoides) in Subarea 48.4: Assessment Diagnostics Readdy, L. and T. Earl
Résumé:
This paper presents the diagnostics associated with the Casal2 model for 48.4 Patagonian toothfish using data up to and including 2022 and is the complementary paper to the assessment paper Readdy and Earl (2023).
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.4 |
WG-FSA-2023/19 Plus d'infos |
Characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 882A–B) through 2022/23 Devine, J.A. and S. Mormede
Résumé:
We summarise fishing catch and effort in the Ross Sea region (Subarea 88.1 and Small-Scale Research Units 88.2A–B) together with biological characteristics of the catch of Antarctic toothfish (Dissostichus mawsoni) through the 2022/23 fishing season. The implementation of the Ross Sea region Marine Protected Area (RSrMPA) from 1st December Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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4.3.1 |
WG-FSA-2023/20 Rev. 1 Plus d'infos |
Continuing research plan for Dissostichus spp. under CM 24-01, paragraph 3 in Subarea 88.3 by Korea and Ukraine from 2021/22 to 2023/24 Delegations of the Republic of Korea and Ukraine
Résumé:
A research plan for Subarea 88.3 was commenced by Korea in 2016 under CM 24-01, New Zealand joined the proposal in 2017. The joint research proposal was for 3 years Read More
Soumis par:
Sangdeok Chung (Corée, Rép. de)
Approuvé par:
Jeongseok Park (Corée, Rép. de)
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4.3.3 |
WG-FSA-2023/21 Plus d'infos |
Detection by an albatross sentinel of a vessel probably engaged in IUU activity in 2019 over Banzare Bank, subarea 58.4.3b Collet, J., K. Delord, B. Guilloux, A.-S. Bonnet-Lebrun, C. Péron, A. Corbeau, A. Pajot, C. Barbraud and H. Weimerskirch
Résumé:
The remoteness of the CCAMLR Area causes significant challenges to limit illegal, unreported and unregulated (IUU) fishing. A recent CCAMLR circular submitted by Australia (COMM CIRC 23/61) summarized various pieces of evidence pointing to one vessel strongly suspected of IUU in subarea 58.4.3b in February 2020. Here, we found further evidence of IUU activities over subarea Read More
Soumis par:
Marc Eléaume (France)
Approuvé par:
Marc Eléaume (France)
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2 |
WG-FSA-2023/22 Plus d'infos |
Diagnostic plots for the 2023 assessment for Ross Sea region Antarctic toothfish (Dissostichus mawsoni) Mormede, S., A. Grüss, A. Dunn and J.A. Devine
Résumé:
Here, we provide diagnostic plots for the 2023 assessment model for Kerguelen Island EEZ Patagonian toothfish (Dissostichus eleginoides) presented in Massiot-Granier et al. (2023a), following the recommendations of WG-SAM-2023. The stock assessment model is described in Massiot-Granier et al. (2023a), and a Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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4.3.1 |
WG-FSA-2023/23 Plus d'infos |
Diagnostic plots for the 2023 assessment model for the Crozet Islands EEZ Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.6 Massiot-Granier, F., F. Ouzoulias and C. Péron
Résumé:
Here, we provide diagnostic plots for the 2023 assessment model for Crozet Islands EEZ Patagonian toothfish (Dissostichus eleginoides) presented in Massiot-Granier et al. (2023a), following the recommendations of WG-SAM-2023. The stock assessment model is described in Massiot-Granier et al. (2023a), Read More
Soumis par:
Félix Massiot-Granier (France)
Approuvé par:
Marc Eléaume (France)
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4.2.4 |
WG-FSA-2023/24 Rev. 1 Plus d'infos |
Diagnostic plots for the 2023 assessment model for the Kerguelen Island EEZ Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.1 Massiot-Granier, F., F. Ouzoulias and C. Péron
Résumé:
Here, we provide diagnostic plots for the 2023 assessment model for Kerguelen Island EEZ Patagonian toothfish (Dissostichus eleginoides) presented in Massiot-Granier et al. (2023a), following the recommendations of WG-SAM-2023. The stock assessment model is described in Massiot-Granier et al. (2023a), and a Read More
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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|
4.2.2 |
WG-FSA-2023/25 Plus d'infos |
Diet composition and feeding strategy of Antarctic toothfish, Dissostichus mawsoni in Subareas 88.1 and 88.3 in the 2022/23 fishing season Baeck, G.W., S. Chung and J. Park
Résumé:
Investigations into the diet composition and feeding strategies of Dissostichus mawsoni in Subareas 88.1 and 88.3 were conducted based on stomach content analysis of specimens collected during the 2022/23 fishing season. In Subarea 88.1, 249 specimens (ranging from 70 to 190 cm in total length) were examined. D. mawsoni, a Read More
Soumis par:
Sangdeok Chung (Corée, Rép. de)
Approuvé par:
Jeongseok Park (Corée, Rép. de)
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|
4.3 |
WG-FSA-2023/26 Rev. 1 Plus d'infos |
Draft integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2 Masere, C. and P. Ziegler
Résumé:
This paper presents an updated assessment for Patagonian toothfish (Dissostichus eleginoides) at Heard Island and McDonald Islands in Division 58.5.2. Starting with the 2021 assessment model that was used to provide management advice, this paper presents a bridging analysis, sensitivity analyses, and proposes a new assessment model for 2023. The 2023 assessment Read More
Soumis par:
Cara Masere (Australia)
Approuvé par:
Mariana Cordeiro (Secrétariat de la CCAMLR)
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4.2.3 |
WG-FSA-2023/27 Plus d'infos |
Estimates of biomass and catch limits for macrourids on the continental slope of the Ross Sea region (Subarea 88.1 and SSRUs 88.2AB) Devine, J., S. Parker, A. Dunn, R. O’Driscoll, and M. Pinkerton
Résumé:
Bottom trawl surveys were carried out by New Zealand on parts of the continental slope of the Ross Sea region in SSRUs 88.1HIK and 88.2A in 2008, 2015, and 2019. Catches from the three surveys contained a mixture of three species: M. whitsoni, M. caml, and Cynomacrurus piriei, and were combined across years and scaled to the slope area to give Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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|
5.2 |
WG-FSA-2023/28 Plus d'infos |
Exploring SSBs responses to different recruitment scenarios and SSB0 calculations in a context of regime shift: a Kerguelen Patagonian toothfish fishery case study Ouzoulias, F., C. Péron and F. Massiot-Granier
Résumé:
Recruitment is a key component in population dynamics: its variations can have a major influence on population fluctuations. Recent studies have shown that toothfish recruitment can be highly variable and stock assessments of Patagonian toothfish (PT) have recently shown decreasing trends of estimated recruitment in the Read More
Soumis par:
Félix Massiot-Granier (France)
Approuvé par:
Marc Eléaume (France)
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|
4.2.2 |
WG-FSA-2023/29 Plus d'infos |
Fish nest area in the southern Weddell Sea. Discussions and recommendations from WG-EMM-2023 Teschke, K., R. Konijnenberg, P. Brtnik, L. Ghigliotti and M. Eléaume
Résumé:
The main aim of this paper is to update WG-FSA on the work of WG-EMM this year on a potential protection mechanism for notothenioid fish nest areas in the Convention Area and for the case of the fish nest area of N. Read More
Soumis par:
Marc Eléaume (France)
Approuvé par:
Marc Eléaume (France)
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|
5.3 |
WG-FSA-2023/30 Plus d'infos |
Fishery characterisation for Antarctic toothfish (Dissostichus mawsoni) and Patagonian toothfish (D. eleginoides) around the South Sandwich Islands (Subarea 48.4) Marsh, J., T. Earl, A. Riley and L. Readdy
Résumé:
This paper provides a summary of catch and effort in the Antarctic toothfish (Dissostichus mawsoni) and Patagonian toothfish (D. eleginoides) fisheries around the South Sandwich Islands (Subarea 48.4), together with more detailed description of the biological characteristics of the catch of both toothfish species between the 2014 to 2023 Read More
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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|
4.1.4, 4.1.5 |
WG-FSA-2023/31 Plus d'infos |
Fishery characterisation for Patagonian toothfish (Dissostichus eleginoides) around South Georgia (Subarea 48.3): 2023 update Marsh, J. and T. Earl
Résumé:
This paper provides a summary of catch and effort in the Patagonian toothfish (Dissostichus eleginoides) fishery around South Georgia (Subarea 48.3), together with more detailed description of the biological characteristics of the catch of Patagonian toothfish between the 1995/96 and 2021/22 fishing seasons. The analysis and data summary provides the Read More
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.3 |
WG-FSA-2023/32 Rev. 1 Plus d'infos |
Identification traits for the grenadiers Macrourus caml and M. whitsoni for onboard observer's use with preliminary attempt in Subarea 88.3 Chung, S., M-J. Seo, J-K. Kim and J. Lee
Résumé:
We investigated molecular and morphological traits of 338 individuals of macrourids collected in Subareas 88.1 and 88.3 between 2021 and 2022. Samples were classified into Macrourus caml and Macrourus whitsoni based on the morphological identification keys such as the number of pelvic fin rays (PF) and the row of lower jaw teeth (LJT). Read More
Soumis par:
Sangdeok Chung (Corée, Rép. de)
Approuvé par:
Jung-re Riley Kim (Corée, Rép. de)
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5.2 |
WG-FSA-2023/33 Plus d'infos |
Improved VAST (vector autoregressive spatio-temporal) modelling of grenadier relative abundance in Subarea 48.6 Sawada, K. and T. Okuda
Résumé:
In the present paper, we report progress since WG-FSA-2022 on the development of statistical modeling to estimate the abundance trends of grenadiers caught as bycatch in the longline fisheries in CCAMLR Subarea 48.6, using spatio-temporal delta generalized linear mixed models (GLMMs) implemented with R package “VAST”. Reflecting the Read More
Soumis par:
Takehiro Okuda (Japon)
Approuvé par:
Takehiro Okuda (Japon)
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5.2 |
WG-FSA-2023/34 Plus d'infos |
Intra- and Inter-annual Variability in Seasonal Sea Ice and Krill Fishery in Subareas 48.1 and 48.2 Shnar V. and S. Kasatkina
Résumé:
We present a preliminary analysis of data from the krill fishery and sea ice in traditional fishing grounds in Subareas 48.1 and 48.2, where the current fishery achieves the bulk of the krill catch over the period 1997-2022. The complex inter-annual and seasonal dynamics of ice conditions were discussed in context of developing management schemes for the krill fishery, Read More
Soumis par:
Svetlana Kasatkina (Fédération de Russie)
Approuvé par:
Svetlana Kasatkina (Fédération de Russie)
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3 |
WG-FSA-2023/35 Plus d'infos |
Length at maturity of the subantarctic skates Bathyraja eatonii and B. irrasa in Kerguelen and Amblyraja taaf in Crozet Faure, J. and C. Péron
Résumé:
In the Patagonian toothfish (Dissostichus eleginoides) fishery occurred in Kerguelen and Crozet, three species of skates are mainly caught as bycatch. Determination of maturity stage of bycatch species by scientific observers is opportunistic resulting in low sample size, especially for females for which dissection is needed. However, length-at-maturity was estimated for Bathyraja Read More
Soumis par:
Félix Massiot-Granier (France)
Approuvé par:
Marc Eléaume (France)
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5.2 |
WG-FSA-2023/36 Plus d'infos |
New Fishery Research Proposal Plan for Dissostichus spp. under CM 24-01, paragraph 3, Subarea 48.2 during season 23/24 — 25/26 Delegation of Chile
Résumé:
Fisheries within the CCAMLR Area are required to operate following CCAMLR Conservation Measures (CM). The current Patagonian toothfish (Dissostichus eleginoides) and Antarctic toothfish (Dissostichus mawsoni) fisheries have been monitored consistently across Subareas 48.2, 48.3 and 48.4 during the last years, producing scientific data for making progress Read More
Soumis par:
César Cárdenas (Chili)
Approuvé par:
César Cárdenas (Chili)
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4.1.6 |
WG-FSA-2023/37 Rev. 1 Plus d'infos |
Population structure of Antarctic toothfish, Dissostichus mawsoni from Areas 58 and 88 in the Antarctic Ocean using microsatellites and genome-wide SNPs Choi, H., H. Park, S. Chung, J. Park, J. Lee, D. Maschette and H.J. Lee
Résumé:
The Antarctic toothfish, Dissostichus mawsoni, serves as a valuable fishery resource around the Antarctic Ocean, managed by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) since 1997. Although delimitating the population structure of this species is crucial for improving fishery management, its Read More
Soumis par:
Sangdeok Chung (Corée, Rép. de)
Approuvé par:
Jung-re Riley Kim (Corée, Rép. de)
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4.3 |
WG-FSA-2023/38 Plus d'infos |
Preliminary Assessment of Mackerel Icefish (Champsocephalus gunnari) in Subarea 48.3 based on the 2023 Groundfish Survey Marsh, J. and T. Earl
Résumé:
The CCAMLR Statistical Subarea 48.3 icefish assessment was conducted by applying the standard projection methodology that has been agreed for this stock by CCAMLR Scientific Committee and its Working Groups. The stratified bootstrap of UK 2023 demersal fish survey icefish catch density and catch rate data indicate a precautionary biomass estimate of 75,170 Read More
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.1 |
WG-FSA-2023/39 Plus d'infos |
Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4 - 2023 fishing season Marsh, J., L. Readdy, A. Riley and T. Earl
Résumé:
The local biomass of Antarctic toothfish (Dissostichus mawsoni) in CCAMLR Subarea 48.4 is estimated from tagging returns, giving a five-year average of 1,130 tonnes since 2019. Applying the CCAMLR agreed precautionary assumption of setting harvest rates based on a 5-year average biomass, and harvest rate of γ = 0.038, results in a 2024 catch limit of 43 tonnes. Read More
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.5 |
WG-FSA-2023/40 Plus d'infos |
Quantifying post-release survival of skate bycatch in the HIMI Patagonian Toothfish longline fishery Appert, C., S. Tracey, C. Peron, C. Masere, P. Ziegler and J.B. Cleeland
Résumé:
Skates (Rajidae) are commonly taken as incidental bycatch in demersal longline fishing operations throughout deep waters of the Kerguelen Plateau. Due to their life history characteristics of slow growth and late maturation, their populations are particularly vulnerable to fishing mortality which can lead to overall and localised population declines. At Heard Island and Read More
Soumis par:
Philippe Ziegler (Australia)
Approuvé par:
Philippe Ziegler (Australia)
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5.2 |
WG-FSA-2023/41 Plus d'infos |
Recent Indicative Trends in By-Catch of Sharks in the CAMLR Convention Area Jones, C.D.
Résumé:
Directed fishing on shark species in the Convention Area for purposes other than scientific research is prohibited under Conservation Measure 32-18. This CM further notes that any by-catch of sharks shall, as far as possible, be released alive. Recent trends in shark by-catch in the CAMLR Convention Area are examined here using information reported by vessels (C2) and Read More
Soumis par:
Christopher Jones (États-Unis d'Amérique)
Approuvé par:
George Watters (États-Unis d'Amérique)
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5.2 |
WG-FSA-2023/42 Plus d'infos |
Report of research fishing operations at Subarea 48.6 between the 2012/13 and 2022/23 fishing seasons Delegations of Japan, Spain, and South Africa
Résumé:
This paper represents the report of a multi-member longline research fishing on Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.6 between 2012/13 and 2022/23 fishing seasons by Japan, Spain, and South Africa. Since the beginning of the structured research plan in 2012/13 fishing season, there have been different year cycles of the plan, the Read More
Soumis par:
Takehiro Okuda (Japon)
Approuvé par:
Takehiro Okuda (Japon)
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4.1.6 |
WG-FSA-2023/43 Rev. 1 Plus d'infos |
Report of the co-conveners of the Age Determination Workshop Hollyman, P. and J. Devine |
4 |
WG-FSA-2023/44 Plus d'infos |
Report of the Groundfish Survey at South Georgias Islands (CCAMLR- Subarea 48.3) in 2023 Delegation of Argentina
Résumé:
This report presents a summary of the work conducted on board and a preliminary description of the results obtained during the research survey. The cruise started on February 27 and returned to Mar del Plata, Argentina on April 3, 2023.
This work was conducted in the CCAMLR statistical subarea 48.3 and its main Read More
Soumis par:
Javier De Cicco (Argentina)
Approuvé par:
María Mercedes Santos (Argentina)
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4.1.1 |
WG-FSA-2023/45 Rev. 1 Plus d'infos |
Report of the UK Groundfish Survey at South Georgia (CCAMLR Subarea 48.3) in February 2023 Hollyman, P., S.L. Hill, C. Gunn, P. Keith, B. Rodriguez and M.A. Collins
Résumé:
The 2023 South Georgia Groundfish Survey took place over the South Georgia and Shag Rocks shelf on the FV Robin M Lee between the 1st and 10th of February 2023. Seventy-five random trawls were completed covering depths of between 106 and 332 m, including 19 at Shag Rocks, 26 in the north west, 11 in the south west, 8 in the south east and 11 in the north east. Overall biomass Read More
Soumis par:
Phil Hollyman (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.1 |
WG-FSA-2023/46 Plus d'infos |
Report on Argentina´s CCAMLR Subarea 48.3 survey: fish Ruocco, N.L., G. Lukaszewicz, E. Aguilar, B. Fusaro, S. Barbini, D. Figueroa and G.A. Colombo
Résumé:
Information on biological aspects of the finfish catches obtained in the survey of BIPO Víctor Angelescu, conducted around South Georgias Islands between March and April 2023, is presented. A total of 14 hauls were performed, with a total of Read More
Soumis par:
Javier De Cicco (Argentina)
Approuvé par:
María Mercedes Santos (Argentina)
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4.1.1 |
WG-FSA-2023/47 Plus d'infos |
Report on exploratory fishing in Divisions 58.4.1 and 58.4.2 between the 2011/12 and 2022/23 fishing seasons Cleeland, J., C. Masere, T. Lamb and P. Ziegler
Résumé:
Exploratory fishing for Antarctic toothfish (Dissostichus mawsoni) in East Antarctica (Divisions 58.4.1 and 58.4.2) began in 2003. While preliminary integrated stock assessments have been developed for these Divisions, robust estimates of stock biomass and precautionary catch limits according to CCAMLR decision rules remain to be determined. Precautionary Read More
Soumis par:
Philippe Ziegler (Australia)
Approuvé par:
Philippe Ziegler (Australia)
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4.2.5 |
WG-FSA-2023/48 Plus d'infos |
Report on the Acoustic-Trawl Survey of Champsocephalus gunnari in Statistical Subarea 48.2 in 2023 Delegation of Ukraine
Résumé:
In the February 2023 Ukrainian fishing vessel "MORE SODRUZHESTVA" has conducted a local acoustic-trawl survey of Champsocephalus gunnari in the statistical Subarea 48.2. Report on this survey is presented here.
Soumis par:
Kostiantyn Demianenko (Ukraine)
Approuvé par:
Kostiantyn Demianenko (Ukraine)
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4.1.2 |
WG-FSA-2023/49 Plus d'infos |
Results from the 2023 Random Stratified Trawl Survey in the Waters Surrounding Heard Island in Division 58.5.2 Maschette, D., T. Lamb, J. Cleeland, C. Appert, C. Masere and P. Ziegler
Résumé:
During March 2023, the annual random stratified trawl survey (RSTS) around Heard Island and McDonald Islands (HIMI) was conducted in CCAMLR Division 58.5.2, with the completion of 163 stations. The survey was conducted on the FV Cape Arkona. Sampling protocols such as the design and the duration of the hauls were similar to recent surveys, but with a
new set of randomly selected Read More
Soumis par:
Dale Maschette (Australia)
Approuvé par:
Philippe Ziegler (Australia)
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4.2.1 |
WG-FSA-2023/50 Plus d'infos |
Risk assessment for the Antarctic starry skate (Amblyraja georgiana) in the Ross Sea Holmes, S.J., B. Finucci, J.A. Devine, and M.H. Pinkerton
Résumé:
The Scientific Committee identified skates as “priority bycatch taxa for which assessments of status are required”. Catch data from the Ross Sea region show that most (~90%) of the skate catch consists of Antarctic starry skate (Amblyraja georgiana) and that this species is the only one with enough mark-recapture data to estimate local biomass. We present updated Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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5.2 |
WG-FSA-2023/51 Plus d'infos |
Ross Sea region Data Collection Protocols Delegation of New Zealand
Résumé:
The Scientific Committee recommended the adoption of the Ross Sea region Data Collection Protocol (RSDCP) to commence for the 2023/24 to 2027/28 fishing seasons. The proposed changes are limited to (i) a new field that allows noting the additional samples, to be added to the observer biological sample and tag recapture forms and the C2 tag recapture form, and (ii) the Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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4.3.1 |
WG-FSA-2023/52 Rev. 1 Plus d'infos |
Satellite tagging of adult Patagonian toothfish (Dissostichus eleginoides) provides first evidence for unexpected movement patterns Kim, E. and C.H. Lam
Résumé:
To better understand Patagonian toothfish (Dissostichus eleginoides) movement and habitat in the Southwest Atlantic, fifty popup satellite archival tags (PSATs) were deployed off Davis Bank on North Scotia Ridge between 2019 and 2020 on adults ranging from 97-139 cm total length. PSATs (18 Lotek Wireless PSATFLEX and 32 Wildlife Computers MiniPAT) were Read More
Soumis par:
Sangdeok Chung (Corée, Rép. de)
Approuvé par:
Jeongseok Park (Corée, Rép. de)
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8 |
WG-FSA-2023/53 Plus d'infos |
Searching Spatial-Temporal Changes in Intrinsic Productivity of Antarctic Krill (Euphausia superba) in a Climate Change and Fishery Management Context Mardones, M., G. Watters and C. Cárdenas
Résumé:
An approach for understanding the dynamics of krill populations in the Antarctic Peninsula (Subarea 48.1) is through the analysis of empirical data, such as size composition obtained from fishery monitoring. By studying this data over multiple years and considering Read More
Soumis par:
Mauricio Mardones (Chili)
Approuvé par:
César Cárdenas (Chili)
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3 |
WG-FSA-2023/54 Plus d'infos |
Spatial Mismatch in Krill Management Approach Warwick-Evans, V., M.A. Collins and S. Hill |
3 |
WG-FSA-2023/55 Plus d'infos |
Stock Annex for the 2023 assessment of Ross Sea region Antarctic toothfish (Dissostichus mawsoni) Mormede, S., J. Devine, A. Grüss and A. Dunn
Résumé:
Stock Annex for:
Species: Antarctic toothfish (Dissostichus mawsoni)
Area: Ross Sea (CCAMLR Subareas 88.1 and 88.2A-B)
Created: 24 May 2021
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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4.3.1 |
WG-FSA-2023/56 Plus d'infos |
Stock Annex for the 2023 assessment of Subarea 48.3 (South Georgia) Patagonian toothfish (Dissostichus eleginoides) Earl, T., L. Readdy and J. Marsh
Résumé:
Stock annex describing the method used in the assessment of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 (South Georgia).
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.3 |
WG-FSA-2023/57 Plus d'infos |
Stock Annex for the 2023 assessment of Subarea 48.4 (South Sandwich Islands) Patagonian toothfish (Dissostichus eleginoides) Readdy, L., T. Earl and J. Marsh
Résumé:
Stock annex describing the method used in the assessment of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.4 (South Sandwich Islands).
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.4 |
WG-FSA-2023/58 Plus d'infos |
Stock Annex for the 2023 assessment of the Patagonian toothfish (Dissostichus elegenoides) population of the Crozet Islands EEZ in Division 58.6. Massiot-Granier, F., F. Ouzoulias and C. Péron |
4.2.4 |
WG-FSA-2023/59 Plus d'infos |
Stock Annex for the 2023 assessment of the Patagonian toothfish (Dissostichus elegenoides) population of the Kerguelen Island EEZ in Division 58.5.1. Massiot-Granier, F., F. Ouzoulias and C. Péron |
4.2.2 |
WG-FSA-2023/60 Plus d'infos |
Stock Annex for the mackerel icefish (Champsocephalus gunnari) fishery in Subarea 48.3 Marsh, J. and T. Earl
Résumé:
Stock annex describing the method used in the assessment of mackerel icefish (Champsocephalus gunnari) in Subarea 48.3
Soumis par:
Timothy Earl (Royaume-Uni)
Approuvé par:
Martin Collins (Royaume-Uni)
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4.1.1 |
WG-FSA-2023/61 Plus d'infos |
Study on reproductive potential of Champsocephalus gunnari, Chaenocephalus aceratus, Pseudochaenichthys georgianus and Notothenia rossii from South Georgias Islands, March 2023 Militelli, M.I., N. Ruocco and G. Lukaszewicz
Résumé:
The aim of this study is to analyse the reproductive potential of icefish species (Champsocephalus gunnari, Pseudochaenichthys georgianus, Chaenocephalus aceratus) and Notothenia rossii off the coast of South Georgias. The research involves assessing length at maturity, total and relative Read More
Soumis par:
Javier De Cicco (Argentina)
Approuvé par:
María Mercedes Santos (Argentina)
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4.1.1 |
WG-FSA-2023/62 Plus d'infos |
Summary of the Toothfish Fishery and Tagging Programme in the Amundsen Sea Region (Small-Scale Research Units 882C-H) to 2021/22 Devine J.A. and S. Mormede
Résumé:
The toothfish fishery in the Amundsen Sea region operates under a research plan developed by the Scientific Committee in 2014, designed to provide data to support a two-area stock assessment model. The slope and shelf area within the Amundsen Sea (Small-Scale Research Units 88.2C-G) shows an improvement in the numbers of recaptures of tagged toothfish within the Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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4.3.2 |
WG-FSA-2023/63 Plus d'infos |
Summary Report from Australia’s Heard Island and McDonald Islands Fishery Climate Adaptation Workshop McDonald, A., M. Gold and Philippe Ziegler |
4 |
WG-FSA-2023/64 Plus d'infos |
The Need to Revise the Approach to Assessing Gear Selectivity in Relation to the Krill Fishery in the Current CCAMLR Topics Sergeev S. and S. Kasatkina
Résumé:
The need to revise the approach to assessing gear selectivity in relation to the krill fishery in the current CCAMLR topics
Soumis par:
Svetlana Kasatkina (Fédération de Russie)
Approuvé par:
Svetlana Kasatkina (Fédération de Russie)
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3 |
WG-FSA-2023/65 Rev. 1 Plus d'infos |
Update of Skate Tagging Programme in the Ross and Amundsen Sea Regions B. Finucci
Résumé:
A 2-year programme was implemented in the 2019/20 and 2020/21 fishing seasons in the Ross Sea region to tag and release skates for population size estimation and to validate the thorn ageing method for Antarctic starry skate (Amblyraja georgiana). A total of 10 218 skates have been tagged and released since the 2019/20 fishing season in the Ross Sea, Amundsen Sea, and Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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5.2 |
WG-FSA-2023/66 Plus d'infos |
Updated Stock Assessment Model for the Crozet Islands EEZ Patagonian Toothfish (Dissostichus eleginoides) Fishery in Sub-Area 58.6 Massiot-Granier, F., F. Ouzoulias and C. Péron
Résumé:
This paper presents an updated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) fishery of the Crozet Islands, CCAMLR sub-area 58.6, with data up to the end of the season 2021/22 (end of August 2022). This updated assessment model is based on the best available data Read More
Soumis par:
Félix Massiot-Granier (France)
Approuvé par:
Marc Eléaume (France)
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4.2.4 |
WG-FSA-2023/67 Rev. 1 Plus d'infos |
Updated Stock Assessment Model for the Kerguelen Island EEZ Patagonian Toothfish (Dissostichus eleginoides) Fishery in Division 58.5.1 for 2023 Massiot-Granier, F., F. Ouzoulias and C. Péron
Résumé:
This paper presents an updated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) fishery of the Kerguelen Island EEZ, CCAMLR Division 58.5.1. It includes commercial fishery data up to the end of the season 2021/2022. The updated assessment model is based on the best available data and includes abundance estimates from Read More
Soumis par:
Félix Massiot-Granier (France)
Approuvé par:
Marc Eléaume (France)
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4.2.2 |
WG-FSA-2023/68 Plus d'infos |
Updated Stock Assessments for Euphausia Superba in Divisions 58.4.1 and 58.4.2 Maschette, D., H. Murase, N. Kelly, P. Ziegler and S. Kawaguchi
Résumé:
Following the revised krill fishery management strategy recommended by the Scientific Committee and agreed by CCAMLR in 2019, we provide updated precautionary catch limits for Euphausia superba in Divisions 58.4.1 and 58.4.2 East. Read More
Soumis par:
Dale Maschette (Australia)
Approuvé par:
Philippe Ziegler (Australia)
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3 |
WG-FSA-2023/69 Plus d'infos |
Using a novel machine learning approach to alleviate the allometric effect in otolith shape-based species discrimination Zhu, G.P. and Y.W. Chen
Résumé:
Species identification by fish otoliths is an effective and appropriate approach. However, the allometric growth of otoliths can cause discrimination Read More
Soumis par:
Guoping Zhu (Chine)
Approuvé par:
Xianyong Zhao (Chine)
Publication:
ICES Journal of Marine Science, Volume 80, Issue 5, July 2023, Pages 1277–1290, https://doi.org/10.1093/icesjms/fsad052
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5.1 |
WG-FSA-2023/70 Plus d'infos |
Revised VME Taxa Classification Guide Ross Sea region – version 2 Devine, J., D. Tracey, S. Mills, D. Macpherson, D. Gordon and E. Mackay
Résumé:
Attached is a revised and updated CCAMLR VME Taxa Classification Guide for the Ross Sea region for the toothfish fishery.
We recommend that this revised VME Taxa Classification Guide replaces the existing guide as part of the information provided by CCAMLR for Technical Coordinators and Scientific Observers ( Read More
Soumis par:
Nathan Walker (Nouvelle-Zélande)
Approuvé par:
Nathan Walker (Nouvelle-Zélande)
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5.3 |
WG-FSA-2023/71 Plus d'infos |
Tag linking - 2023 report. CCAMLR Secretariat
Résumé:
This document summarizes the method used to link releases and recaptures of tagged toothfish and skates in the Convention Area, and the current state of the database of linked tags held by the CCAMLR Secretariat. Thanks to improvements in data quality and the growing use of CCAMLR tags by Members, the quality of links has increased with time. To date, over 98% of recaptured fish have been Read More
Soumis par:
Stéphane Thanassekos (Secrétariat de la CCAMLR)
Approuvé par:
Mariana Cordeiro (Secrétariat de la CCAMLR)
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4 |
WG-FSA-2023/72 Plus d'infos |
Progress on the CCAMLR gear library CCAMLR Secretariat
Résumé:
In 2022, the Scientific Committee tasked the Secretariat with collating and making available fishing net diagrams and net configuration measurements submitted during the fishery notification process on the CCAMLR gear library webpage. Members were also requested to submit papers with additional net diagrams, configurations, and descriptions of operations to Read More
Soumis par:
Claire Van Werven (Secrétariat de la CCAMLR)
Approuvé par:
Mariana Cordeiro (Secrétariat de la CCAMLR)
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3 |
WG-FSA-2023/73 Plus d'infos |
Fish by-catch in the krill fishery - 2023 update. CCAMLR Secretariat
Résumé:
Analysis of fish by-catch in the krill fishery is updated based on recommendations from WG-FSA-2022. In addition to updating the analyses of frequency of occurrence and by-catch rates, by-catch weight is estimated using the observer data. Extensive data quality checks have been performed and enabled the correction of several records.
Soumis par:
Stéphane Thanassekos (Secrétariat de la CCAMLR)
Approuvé par:
Mariana Cordeiro (Secrétariat de la CCAMLR)
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5.1 |
WG-FSA-2023/74 Plus d'infos |
Dissostichus spp. Catch Documentation Scheme (CDS), and monthly fine-scale catch and effort data decision rule review CCAMLR Secretariat
Résumé:
Reconciliation of the Dissostichus spp. Catch Documentation Scheme (CDS), and monthly fine-scale catch and effort data utilises a relative (10%) and an absolute (200 kg) threshold for differences to identify records for further investigation. WG-FSA-2022 requested the Secretariat to review whether the thresholds are appropriate to identify where reconciliation is needed. A review of all Read More
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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4 |
WG-FSA-2023/75 Rev. 1 Plus d'infos |
Vulnerable Marine Ecosystems (VME) in CCAMLR CCAMLR Secretariat
Résumé:
The Vulnerable Marine Ecosystems (VME) registry is currently composed of an excel file available to download by the public at CCAMLR website and additional data stored on CCAMLR databases. The present paper discusses issues of the current registry and presents ongoing improvements to be implemented both for its structure and presentation.
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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5.3 |
WG-FSA-2023/P01 Plus d'infos |
Fatty acid composition and energy allocation in muscle and gonad tissues indicates that the female mackerel icefish Champsocephalus gunnari is an income breeder Zhu, G.P. and K. Huang
Résumé:
The energy density and fatty acid composition profiles of the muscle and gonad tissues of female mackerel icefish Champsocephalus gunnari from Subarea 48.2 (the South Orkney Islands) were investigated throughout ovarian development to better understand the reproductive allocation strategy and the role of specific fatty acids Read More
Soumis par:
Guoping Zhu (Chine)
Approuvé par:
Xianyong Zhao (Chine)
Publication:
Zhu, G.P. and K. Huang. 2023. Fatty acid composition and energy allocation in muscle and gonad tissues indicates that the female mackerel icefish Champsocephalus gunnari is an income breeder. J Fish Biol, 103(3): 460-471, https://doi.org/10.1111/jfb.15461
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5.1 |
WG-SAM-2023/01 Rev. 1 Plus d'infos |
Continuation of the Research on Antarctic toothfish (Dissostichus mawsoni) in Statistical Subarea 48.6 in 2023/24 from a multiyear plan (2021/22–2023/24): Research Plan under CM 21-02, paragraph 6(iii) Delegations of Japan, South Africa and Spain
Résumé:
This is the third year continuation of the on-going three-year plan from 2021/22 to 2023/24. There is no significant change from the endorsed proposal (WG-FSA-2021/38). South Africa will not be participating in the research fishing in 2023/24 season due to unavailability of the fishing vessel. However, South Africa will participate in the lab and analytical work Read More
Soumis par:
Takehiro Okuda (Japon)
Approuvé par:
Takehiro Okuda (Japon)
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4.1.6 |
WG-SAM-2023/03 Plus d'infos |
Continuing research in the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2022/23 to 2025/26; Research plan under CM21-02, paragraph 6(iii) Delegations of Australia, France, Japan, Republic of Korea and Spain
Soumis par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
Approuvé par:
Catherine Stubberfield (Secrétariat de la CCAMLR)
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4.2.5 |