WG-FSA-16

Summary of catches from directed fishing on toothfish, icefish and krill in the Convention Area in 2014/15 and 2015/16, including catches taken during scientific surveys conducted in accordance with Conservation Measure 24-01. Catches reported in 2014/15 were published in the CCAMLR Statistical Bulletin, Volume 28. Catch totals for the current season (2015/16) are preliminary and Read More
Submitted By:
Dr David Ramm (CCAMLR Secretariat)

Approved By:
Mr Andrew Wright (CCAMLR Secretariat)

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The CCAMLR Secretariat’s data management systems provide the secure infrastructure and repository for CCAMLR data which are submitted by CCAMLR Members to support the policy, scientific and administrative work of the Commission and Scientific Committee. These systems are being redeveloped as part of a long-term program of work which started in 2013. The work has focused on the development of Read More
Submitted By:
Mr Andrew Wright (CCAMLR Secretariat)

Approved By:
Mr Andrew Wright (CCAMLR Secretariat)

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This study aims to provide consistent information to explain the steady declining trend in the number of breeding pairs of Antarctic shag Phalacrocorax bransfieldensis in two colonies on Nelson Island, South Shetland Islands, southern Atlantic sector of Antarctica, which was observed during the 1990s up to the mid 2000s over an overall monitoring period Read More
Submitted By:
Dr Esteban Barrera-Oro (Argentina)

Approved By:
Dr Enrique Marschoff (Argentina)

Publication:
Polar Biol., (2015), doi: 10.1007/s00300-015-1850-5

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This paper summarises the data collected by Scientific Observers operating in the Convention Area on board longline and finfish trawl vessels during the 2016 season (based on data received by the Secretariat up to 19 September 2016). Information on observer coverage, incidental mortality (including the implementation of mitigation related CMs), tagging, and fish sampling is presented.

Trammel net surveys were continued in Potter Cove, South Shetland Islands, Antarctica, to achieve a 33-year record, 1983-2016, to monitor changes in the prevalence of three species of notothenioid fishes: Notothenia rossii, Gobionotothen gibberifrons and N. coriiceps. Inshore results were consistent with those achieved from the most recent offshore bottom trawl Read More
Submitted By:
Dr Esteban Barrera-Oro (Argentina)

Approved By:
Dr Enrique Marschoff (Argentina)

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Data on fish bycatch in the krill from Commercial catch data (95 513 hauls) and CCAMLR SISO data (11875 hauls) was used to examine the frequency of occurrence, proportion by mass, length-frequency distribution and geographic provenance of the key fish taxa reported. There was a high degree of overlap in the most frequently reported taxa in the C1 data and SISO data, with Lepidonothen Read More
Submitted By:
Dr Keith Reid

Approved By:
Mr Andrew Wright (CCAMLR Secretariat)

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This paper presents an update of the metrics of capacity and capacity utilisation presented in WG-SAM-14/19 and WG-FSA-15/09 in order to monitor trends in capacity in exploratory toothfish fisheries in Subareas 88.1 and 88.2. The updated metrics show the same pattern as the metrics based on the data up 2016 and do not indicate an excess capacity in the fishery. As indicated previously, based Read More
Submitted By:
Dr Keith Reid

Approved By:
Mr Andrew Wright (CCAMLR Secretariat)

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To identify the important prey items for pre-recruit Antarctic toothfish in the SSRUs 58.4.1.C, 58.4.1.G, 58.4.1.E, and 58.4.2.E, their stable carbon and nitrogen isotope ratios were determined. Sampling efforts were made during a longline survey of pre-recruit toothfish from commercial fishing vessel. In the previous studies, similarities in total FA compositions and the FA profiles in muscle Read More
Submitted By:
Dr Seok-Gwan Choi (Korea, Republic of)

Approved By:
Dr Seok-Gwan Choi (Korea, Republic of)

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We measured concentrations of 15 perfluorinated compounds (PFCs) in muscle tissues of Antarctic toothfish (n=113), and investigated accumulation patterns of PFCs in female and male muscles. The total PFCs (Σ₁₅PFCs) were ND (not detected) to 2.98 ng/g wet weight (ww) in muscle tissues with 0.32 ng/g ww of median concentration. The main compounds among PFCs were perfluoro-n-hexanoic Read More
Submitted By:
Dr Seok-Gwan Choi (Korea, Republic of)

Approved By:
Dr Seok-Gwan Choi (Korea, Republic of)

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Preliminary results of a pop-up satellite tag (PSAT) on large Antarctic toothfish are described in this report. The toothfish was caught in the Mawson Sea in Feb 2015 and released with a PSAT by a Korean scientific observer. The same observer recovered the fish a year later. The days of liberty were over a year (366 days). The vertical movement of the fish shows strong and contrasting patterns Read More
Submitted By:
Dr Seok-Gwan Choi (Korea, Republic of)

Approved By:
Dr Seok-Gwan Choi (Korea, Republic of)

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Marine mammal interactions with fisheries are a growing major world-wide issue with both substantial ecological and economic consequences. Most longline fisheries operating around the world are seriously affected by these interactions i.e. marine mammals eating fish directly from fishing gear.

To begin addressing these issues globally, the first international workshop dedicated to Read More
Submitted By:
Mr Nicolas Gasco (France)

Approved By:
Professor Philippe Koubbi (France)

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Depredation caused by killer whales and sperm whales on the Patagonian toothfish (Dissostichus eleginoides) fishery off Kerguelen and Crozet EZs are amongst the most important in the Southern Ocean. This paper presents the first results of depredation rates calculated on a yearly basis using the CPUE method.

Being able to correctly identify species is crucial in observer’s tasks and data quality implies very good knowledge from observers. Identification quality is related to observer’s training and resources provided by technical coordinators.

This document is updating the original tool described in WG-FSA-15/75, developed as  a “serious game” for observers to more easily learn species Read More
Submitted By:
Mr Nicolas Gasco (France)

Approved By:
Professor Philippe Koubbi (France)

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This document is devoted to studying species composition, spatial and vertical distributions, size composition and abundance of morids in the CCAMLR and adjacent areas. The main goal is to conserve these fishes and prevent them from disturbance in the Antarctic waters. This will be done by detection of areas and depths of their aggregations, by reveal of presence/absence of spatial and Read More
Submitted By:
Dr Alexei Orlov (Russian Federation)

Approved By:
Dr Alexei Orlov (Russian Federation)

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The indices of exploratory toothfish fishery in the Ross Sea for the period of 2008-2015 are considered. The analysis was focused on CPUE toothfish (kg/1000 hooks), by-catch CPUE (kg/1000 hooks) and normalized target catch ratio. There was evidence of distinct differences in the mean (and distribution) in the CPUE toothfish and the by-catch CPUE.    

Our analysis also Read More
Submitted By:
Dr Svetlana Kasatkina (Russian Federation)

Approved By:
Mr Dmitry Kremenyuk (Russian Federation)

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The analysis of the toothfish fishery data in the northern part of the Ross Sea (SSRU 88.1 B, C and G) was performed using haul-by-haul data from the CCAMLR database for the period 1997-2015.  The variability of catch per haul (kg) and CPUE (kg/1000 hooks) depending on the hauling duration (min) and hauling speed   (min/1000 hooks) were analyzed.

Our analysis shows that Read More
Submitted By:
Dr Svetlana Kasatkina (Russian Federation)

Approved By:
Mr Dmitry Kremenyuk (Russian Federation)

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Closed mostly within the Weddell Sea Subarea 48.5 is one of the closed data-poor CCAMLR subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the Sea during mostly all the year, this large water area is very similar to the Ross Sea. This similarity could be found in geographical location, bathymetric profile, currents system and follows from Read More
Submitted By:
Dr Svetlana Kasatkina (Russian Federation)

Approved By:
Mr Dmitry Kremenyuk (Russian Federation)

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Russian Federation is going to continue investigation for toothfish in Ross Sea in fishing seasons 2016-2019. The present program aims to recapture tagged fishes released during the implementation of the previous research program took place in 2010-2012 fishing seasons and investigate resource potential and life cycle of Dissostichus species within the eastern part of the Ross Sea Read More
Submitted By:
Dr Svetlana Kasatkina (Russian Federation)

Approved By:
Mr Dmitry Kremenyuk (Russian Federation)

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As requested by members at WG-FSA 15, the Secretariat has collated existing materials to develop a bycatch guide for commonly caught fish and skate species in CCAMLR longline and trawl fisheries. The guide consists of comprehensive descriptions for 21 species, and two additional appendices which contain detailed descriptive keys for Macrourid (Grenadier) identification, and for juvenile fish Read More
Submitted By:
Mr Isaac Forster (CCAMLR Secretariat)

Approved By:
Mr Andrew Wright (CCAMLR Secretariat)

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During a CCAMLR endorsed fishing survey on board the Chilean trawler ‘Cabo de Hornos’ around the South Orkney Islands and Elephant Island, a trained marine mammal observer conducted a distance sampling survey for cetaceans along track. During 10 survey days, 463.1 km were covered on effort. A total of 44 fin whale (Balaenoptera physalus) groups comprising 61 individuals were recorded Read More
Submitted By:
Dr César Cárdenas (Chile)

Approved By:
Dr César Cárdenas (Chile)

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Our knowledge of seabird assemblage composition and abundance at-sea is limited by the availability of vessel platforms. Fishing vessels is an alternative to dedicated research vessels. Besides, it is important to document potential interactions between fishing vessels and seabirds and to discern potential biases in seabird assemblages that fishing operations could cause. Here we document Read More
Submitted By:
Dr César Cárdenas (Chile)

Approved By:
Dr César Cárdenas (Chile)

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This paper submits the results of the acoustic cruise made in the austral summer of 2016. The survey delivers the bottom bathymetry, the geographic distribution of krill concentrations, and the presence of fish shoals in 1,500 nautical miles over the shelf and the continental slope (100-500 m), around Elephant Island and South Orkney Islands. Krill concentrations are described, as well as Read More
Submitted By:
Dr César Cárdenas (Chile)

Approved By:
Dr César Cárdenas (Chile)

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The frequency distribution of oocytes diameter and relative fecundity (FR) of 4 notothenioids (Chaenocephalus aceratus, Chaenocephalus gunnari, Notothenia rossi and Pseudochaenichthys georgianus) was carried out, in females collected during a fishery research survey around the Elephant Island and South Orkney Islands), between 21th January and 14th February 2015. Measurement Read More
Submitted By:
Dr César Cárdenas (Chile)

Approved By:
Dr César Cárdenas (Chile)

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The annual random stratified trawl survey (RSTS) of 2016 at HIMI was conducted during April, with the completion of 163 stations. The survey was conducted for the second year on the FV Atlas Cove. Sampling protocols such as the design and the duration of the hauls were similar to last year’s survey, but with a new set of randomly selected station points.

The calculated density of D Read More
Submitted By:
CCAMLR Science Team at AAD (Australia)

Approved By:
Dr Dirk Welsford (Australia)

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In response to the request from SC-CAMLR-XXXIV, the Secretariat has provided area-specific information on IUU activity that could be incorporated into the relevant Fishery Reports.

At WG-SAM-16, the Working Group discussed the implications of toothfish moving long distances after the Chilean research survey for Dissostichus spp. in Subarea 48.2 recaptured one tagged fish in 2016 that had been released in Subarea 48.6 in 2011 (WG-SAM-16/20). The Working Group noted that to date the majority of tagged toothfish movements were very restricted in distance and Read More
Submitted By:
Ms Emily Grilly

Approved By:
Mr Andrew Wright (CCAMLR Secretariat)

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The annual Random Stratified Trawl Survey was undertaken in Division 58.5.2 in the vicinity of Heard Island during April 2016. This paper provides a preliminary assessment of mackerel icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79^o 20’ E using standard CCAMLR methods (CMIX and Generalized Yield Model). A large 2+ cohort is Read More
Submitted By:
Mr Dale Maschette (Australia)

Approved By:
Dr Dirk Welsford (Australia)

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This paper provides local biomass estimates for D. mawsoni and D. eleginoides in the research nlocks in Subareas 48.6 and 58.4 using the methods agreed to at WG-SAM-16. The methods used to generate the biomass estimates are fully documented from the provison of data extracts (with associated metadata) through to the final results.

CCAMLR XXXIV endorsed a trial pre-season extension (1-14 April) and a new conditional trial post-season extension (15-30 November), in addition to the existing pre-season (15-30 Apr) and trial post-season extension (1-14 Nov) in the Patagonian toothfish longline fishery in statistical division 58.5.2 (WG-FSA-15/48). Australia undertook to report annually on the results of both trials. This Read More
Submitted By:
Dr Dirk Welsford (Australia)

Approved By:
Dr Dirk Welsford (Australia)

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Exploratory fishing for toothfish (Dissostichus spp.) in East Antarctica (Divisions 58.4.1 and 58.4.2) began in 2003. Robust stock assessments and catch limits according to CCAMLR decision rules remain to be determined for these Divisions. Multiple research plans are currently in place by Australia (commenced 2015/16), France (commencing 2016/17), Japan (commencing 2016/17), Republic Read More
Submitted By:
Dr Philippe Ziegler (Australia)

Approved By:
Dr Dirk Welsford (Australia)

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Robust stock assessments and catch limits according to CCAMLR decision rules remain to be determined for Divisions 58.4.1 and 58.4.2, and precautionary management arrangements are in place as set out in Conservation Measures 41-11 and 41-05. Multiple exploratory fishing research plans are currently in place by Australia (commenced 2015/16), France (commencing 2016/17), Japan (commencing 2016/ Read More
Submitted By:
Dr Philippe Ziegler (Australia)

Approved By:
Dr Dirk Welsford (Australia)

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According to the experience gained in the first phase of the research and observations made by WG-SAM-16, a new proposal is provided to determine the distribution and abundance of fish in subareas 48.1 and 48.2. In this opportunity, the study area includes the continental shelf and slope north of Elephant Island and north of South Orkney Islands, between 100 and 500 m of depth (Depth strata: Read More
Submitted By:
Dr César Cárdenas (Chile)

Approved By:
Dr César Cárdenas (Chile)

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South Africa and Japan have revised the next season’s (2016/17) research plan in Subarea 48.6 using the latest CCAMLR C2 and Observer data, following several advices during WG-SAM meeting in 2016.

We have used extracted data provided by CCAMLR Secretariat in this late August for the current analysis, but not used the cleaning data provided by them in this early September due to tight Read More
Submitted By:
Dr Kenji Taki (Japan)

Approved By:
Dr Taro Ichii

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Japan and France have revised the next season’s (2016/17) research plan in research blocks 58.4.4b_1 and 58.4.4b_2 using the latest CCAMLR C2 and Observer data, following several advices during WG-SAM meeting in 2016.

We have used extracted data provided by CCAMLR Secretariat in this late August for the current analysis, but not used the cleaning data provided by them in this early Read More
Submitted By:
Dr Kenji Taki (Japan)

Approved By:
Dr Taro Ichii

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We describe the typical steps involved in demersal longline fishing operations for toothfish in CCAMLR fisheries and link those steps to the variables recorded as part of the CCAMLR catch and effort data reporting system. We then describe statistical properties of the recorded variables and how they may vary among gear type and other factors that make them useful to understand fishing Read More
Submitted By:
Mr Alistair Dunn (New Zealand)

Approved By:
Mr Alistair Dunn (New Zealand)

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The first winter longline survey of Antarctic toothfish in the northern Ross Sea region was successfully completed during June and July 2016. A total of 55 longlines sets were completed in the 4 strata, and 55.2 t of Antarctic toothfish and 3.4 t of Patagonian toothfish were caught. Spawning and spent Antarctic toothfish were captured late in the survey on undersea features to the northwest of Read More
Submitted By:
Mr Alistair Dunn (New Zealand)

Approved By:
Mr Alistair Dunn (New Zealand)

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Net monitor cable systems have been prohibited in CCAMLR trawl fisheries since 1994. This paper advocates a change in the CM 25-03 that opens for use of such cable. It is argued that this is beneficial for management as well as fishery.

The stock of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 was conservatively estimated from tagging returns to be 1068.7 tonnes. In previous years the harvest rate used for Patagonian toothfish (D. Eleginoides) in Subarea 48.3 (γ = 0.038) has been used as a precautionary harvest rate which would imply a 2016/17 yield of 40.6 tonnes compared to the 2015/16 TAC of 39 Read More
Submitted By:
Dr Marta Söffker (European Union)

Approved By:
Dr Chris Darby

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This paper presents a proposal for a longline survey connecting the currently undertaken surveys in Subarea 48.2 with the established fishery in Subarea 48.4. The research objectives include determining population connectivity between these Subareas, improving understanding of Dissostichus sp population structures in this region, and improving available data on bathymetry and Read More
Submitted By:
Dr Marta Söffker (European Union)

Approved By:
Dr Chris Darby

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This paper presents further progress towards a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea region, defined here as SSRUs 88.2C–H. The region is split into two main areas: the North (SSRU 88.2H) comprising large mature fish, and the South (SSRUs 88.2C–G) comprising a mix of large mature fish and small immature fish.

Two-area Read More
Submitted By:
Mr Alistair Dunn (New Zealand)

Approved By:
Mr Alistair Dunn (New Zealand)

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This report provides a characterisation of the toothfish fishery and associated tagging programme in the Amundsen Sea Region (SSRUs 88.2C–H) up to and including the 2015/16 fishing year. A research plan was implemented in the region beginning in 2014/15 to concentrate fishing in the South (SSRUs 88.2C-G) into four smaller research blocks in order to increase the likelihood of recaptures of Read More
Submitted By:
Mr Alistair Dunn (New Zealand)

Approved By:
Mr Alistair Dunn (New Zealand)

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The WG-SAM in 2016 “agreed the importance of identifying a set of diagnostics and clear criteria to assess the likelihood that a vessel is operating as would be expected in normal research activities”, further noting that a characterisation of fishing activities was also required in order to achieve such a goal (WG-SAM 2016, paragraph 4.19). Read More
Submitted By:
Mr Alistair Dunn (New Zealand)

Approved By:
Mr Alistair Dunn (New Zealand)

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At its annual meeting in 2016, WG-EMM recalled its obligation to review and advise on Conservation Measure 51-07, which is due to lapse at the end of the 2015/16 fishing season, and presented its discussions on this subject in paragraphs 2.201 to 2.244 of its WG report.  WG-EMM recommended that work be undertaken to further develop a risk assessment approach to spatially subdivide the Read More
Submitted By:
Dr Andrew Constable (Australia)

Approved By:
Dr Dirk Welsford (Australia)

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This paper presents the outcomes from the application of the risk assessment framework for distributing the krill trigger level in Area 48, which was described in Part 1 of this work (WG-FSA-16/47). This second part has two additional components of work: (i) results of the analyses using the data within the risk assessment framework, and (ii) a discussion of the implications of this work, Read More
Submitted By:
Dr Andrew Constable (Australia)

Approved By:
Dr Dirk Welsford (Australia)

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The third year research plan of Ukraine in subarea 48.2 by the fishing vessel SIMEIZ is provided. The survey design remains the same as in the second (2016) year. Ukraine proposes to divide the stock (the catch limit) in the researched area on two blocks – Northern and Southern, in order to reach maximum coverage of the subarea by the research stations.

The second year survey and observations of Dissostichus spp. in statistical subarea 48.2 on board the Ukrainian vessel SIMEIZ were conducted in accordance with the recommendations of the Scientific Committee and Commission. The second year survey design was amended in comparison with the one of the first year and approved by WGs SAM, FSA and SC CCAMLR.  Obtained Read More
Submitted By:
Dr Leonid Pshenichnov (Ukraine)

Approved By:
Dr Kostiantyn Demianenko (Ukraine)

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A project is proposed to provide CCAMLR with a detailed description of all species which are or have been subject to exploitation at one time in the Southern Ocean. It is envisaged that CCAMLR will benefit considerably from the project both in terms of its publicity and perception in the context of international organisations.  This paper provides a brief outline of the work proposed, Read More
Submitted By:
Dr Karl-Hermann Kock (Germany)

Approved By:
Professor Thomas Brey

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This paper presents the latest developments in Casal models for Crozet with an updating of input data from the more recent years (up to 2015/16 season) and a reassessment of stocks taking into account the previous remarks of the WG-FSA meetings.

In 2015, An Icefish specific trawl survey was undertaken at Kerguelen Islands (Division 58.5.1) to collect information about the size distribution and the biomass status of mackerel icefish, Champsocephalus gunnari. Data from this random stratified trawl survey was used for a short term assessment of C. gunnari on Kerguelen EEZ. The standard CCAMLR methods were used to Read More
Submitted By:
Mr Romain Sinegre (France)

Approved By:
Professor Philippe Koubbi (France)

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An updated assessment of the Patagonian toothfish (Dissostichus eleginoides) stocks in Kerguelen area is presented. This study is based on a CASAL (C++ Algorithmic Stock Assessment Laboratory) model. Different statistical and biological datasets are used: catches, tag releases/recaptures data, commercial catch-at-length, data from the “PoKer” surveys, and the last age readings.

In Division 58.4.3a, since 2012, research fishing has been conducted in the research block by two vessels using longlines: Shinsei Maru No. 3 (Japan) and the Saint André (France). The catch limit for Dissostichus spp. is 32 tonnes and the total reported catch up in 2014/2015 was 15 tonnes. A technical problem for the French vessel had shortened the fishing campaign. In this proposal, Read More
Submitted By:
Mr Benoit Tourtois

Approved By:
Professor Philippe Koubbi (France)

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A multi-year research plan as outlined in CM 41-04 (2012, 2013, 2014) was initiated in Statistical Subarea 48.6 by Japan and South Africa during the 2012/13 fishing season. Two vessels participated in the research project in each of the three fishing seasons and the progress achieved during the first 3.5 years is reported.

The emphasis of the progress report is on block 486_2, since Read More
Submitted By:
Mr Sobahle Somhlaba (South Africa)

Approved By:
Dr Toufiek Samaai

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In 2016, the USA and New Zealand began a collaborative initiative to describe Antarctic toothfish (Dissosticus mawsoni) movement and habitat preferences in the Ross Sea (Subarea 88.1) using pop-off satellite archival tags (PSAT) tags. Fish were tagged as part of research longline efforts in the southern shelf and northern seamount regions. A total of 10 PSAT tags of two tag types were Read More
Submitted By:
Dr Christopher Jones (United States of America)

Approved By:
Dr George Watters (United States of America)

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We present preliminary results on age and growth of Dissostichus mawsoni for the second season (2013/14) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on otolith readings. It is included the age-length key and growth parameters estimates by sex. Growth parameters obtained using length-age pair values are: L_∞: 175.7, k: 0.1078 and t<sub>0 Read More
Submitted By:
Mr Roberto Sarralde Vizuete (Spain)

Approved By:
Ms Doro Forck (CCAMLR Secretariat)

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Proposal for research fishing in 48.6, modification to WG-SAM 16/12 (SC-CAMLR-XXXV/05, parr 3.38 and 3.39).

The Antarctic toothfish (Dissostichus mawsoni Norman, 1937) is one of the main target species of commercial fisheries in the Antarctic. It is an endemic and is found along the shelf of Antarctica, as well as on the slopes of seamounts, underwater elevations and islands in the sub-Antarctic. It feeds on a variety of fish and cephalopods and can be an intermediate/paratenic host of some Read More
Submitted By:
Dr Alexei Orlov (Russian Federation)

Approved By:
Dr Alexei Orlov (Russian Federation)

Publication:
Polar Res., 35 (2016): 29364, doi: http://dx.doi.org/10.3402/polar.v35.29364

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Lipid metabolism and indices of oxidation processes obtained during examination of specimens of Antarctic toothfish Dissostichus mawsoni (Perciformes: Nototheniidae) caught in the Ross Sea are given. Blood plasma, tissues mesonephric kidney, liver and spleen were studied for the content of total lipids and lipid composition, products of lipid peroxidation and level of antioxidant Read More
Submitted By:
Dr Alexei Orlov (Russian Federation)

Approved By:
Dr Alexei Orlov (Russian Federation)

Publication:
Issues of pathology, immunology and health protection of fishes and other hydrobionts. Extended materials of the IV International Congress, Borok, 24–27 September 2015: 280–286 (in Russian)

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Three species of skate, Bathyraja eatonii, B. irrasa and B. murrayi, are commonly taken as incidental by-catch in Patagonian toothfish (Dissostichus eleginoides) longline and trawl fisheries, and the mackerel icefish (Champsocephalus gunnari) trawl fishery on the Kerguelen Plateau (KP) in the southern Indian Ocean. Data from fishery observations for Read More
Submitted By:
CCAMLR Science Team at AAD (Australia)

Approved By:
Ms Doro Forck (CCAMLR Secretariat)

Publication:
Fish. Res., 186 (2017): 65–81, http://dx.doi.org/10.1016/j.fishres.2016.07.022

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The subarea 88.3 is a large area contained from 105° W to 70° W where has been closed to directed fishing following the results of a Chilean survey activities in 1998 (SC-CCAMLR-XVII/BG/7). Previous three research surveys conducted by the New Zealand and the Russian flagged vessels since 1998. It was noted that 8 D. Mawsoni were tagged by the New Zealand in the 2004/05 season and 123 Read More
Submitted By:
Dr Seok-Gwan Choi (Korea, Republic of)

Approved By:
Ms Jung-re Riley Kim (Korea, Republic of)

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At its 2011 meeting, the Scientific Committee agreed that a time series of relative abundance from a well-designed survey could be a useful input into the Ross Sea stock assessment model. The first four surveys were completed in February 2012, 2013, 2014, and 2015. In this paper we provide results of the fifth survey in the time series. The objectives of this survey were: (1) to continue a Read More
Submitted By:
Dr Rohan Currey (New Zealand)

Approved By:
Dr Rohan Currey (New Zealand)

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We propose the continuation of a multi-member research project using standardised longline gear to sample the toothfish populations in the northern areas (61°‑ 66° S) of SSRUs 88.2A–B. The purpose of the research as requested by the Scientific Committee (SC-CAMLR XXXII, paragraph 3.76) is to characterise the local toothfish populations found there to better understand stock structure, movement Read More
Submitted By:
Dr Rohan Currey (New Zealand)

Approved By:
Dr Rohan Currey (New Zealand)

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Korean research fishing was conducted in Subarea 88.3 from 8 February 2016 to 5 March 2016 in 2015/16 fishing season. The total number of days fished are 41 of 76 days stayed in the fishing grounds. The total catch of D. mawsoni was 106,241 kg with 5,227 individuals, and their CPUE recorded 0.19 kg/hook. 566 individuals of D. mawsoni were tagged and released. Tagging rate and Read More
Submitted By:
Dr Seok-Gwan Choi (Korea, Republic of)

Approved By:
Dr Seok-Gwan Choi (Korea, Republic of)

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