Search results

1. Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters

   . Clearly resolved enzyme phenotypes were obtained at 18 loci, of which 7 exhibited polymorphism at the 0.95 ... ; phosphoglucose mutase, PGM-II 2.7.5.1; pyruvate kinase, PK 2.7.1.40). Routine scoring of 116 fish at the 18 loci ... Abstract:  The use of allozymes as a tool in stock structure analysis was examined in the ... commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ...

   Meeting Document : WG-FSA-90/10 : Author(s): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)

2. Revisiting CCAMLR’s Approach to Management – A compendium of papers that explores the implementation of the CAMLR Convention

   Abstract:  ASOC originally compiled this compendium to assist discussions at the recent 2 nd ... CCAMLR Symposium. We note that at last year’s meeting CCAMLR agreed to maintain MPA papers in one place ... and papers on topics of importance relevant to CCAMLR’s broader work such as those included in this ... maintenance of a readily accessible record of CCAMLR’s history, progress and discussions across the fuller ...

   Meeting Document : CCAMLR-XXXIV/BG/26 : Author(s): Submitted by ASOC

3. Revised proposal for the ongoing research plan on Patagonian toothfish (Dissostichus eleginoides) in Division 58.4.4b (2016/17–2020/21)

   and a final report will be provided at WG-FSA in 2021. Author(s):  Delegations of Japan and France ... and WG-FSA-16/33 Rev. 1) for a period of 5 years. The proposal submitted here has been substantially ... revised to address the concerns expressed at WG-FSA 2019 and SC-CAMLR-XXXVII (para. 3.158). We followed ... part of 58.4.4b_2 (WG-FSA-18/23) and a new French vessel has joined the research plan to increase ...

   Meeting Document : WG-FSA-2019/64 : Author(s): Delegations of Japan and France

4. Is our attempt to estimate biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited

   . The species has been heavily fished at the beginning of the 1970’s. The closure of the fishery for ... are more or less evenly distributed over the area at the time of the survey. This assumption is ... Abstract:  Notothenia rossii was the first target species of the fishery in the Southern Ocean ... this species was one of the first conservation measures CCAMLR adopted in 1985. Fish biomass within a ...

   Meeting Document : WG-FSA-03/12 : Author(s): K.-H. Kock (Germany), M. Belchier (United Kingdom) and C.D. Jones (USA)

5. APPLYING A TS-PROBE FOR MEASURING ANTARCTIC KRILL (EUPHAUSIA SUPERBA) TARGET STRENGTH IN SITU: PROCEDURES AND DATA ANALYSIS

   strength of Antarctic krill in situ at short range. The experimental methods, procedure for data retrieval ... operating at 38, 120 and 200 kHz is installed in the probe, connected to three pressure resistant ... transducers with 7o half power beam opening angles. The orientation of the probe was monitored with sensors ... transducer platform with the purpose of measuring the orientation of the organisms. All system communication ...

   Meeting Document : SG-ASAM-09/13 : Author(s): G. Skaret, L. Calise and E. Ona (Norway)

6. Age Determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula Subarea (Subarea 48.1)

   Abstract:  Age determination was carried out on Notothenia gibberifrons specimens collected at two ... localities of the South Shetland Islands (Low I. and Potter Cove, 25 De Mayo I./King George). Samples were ... composed by small and medium size fishes (14.8-38 cm of total length). Otolith and scale readings have been ... compared in 19 Potter specimens. In some of them scale readings resulted one year greater. This could arise ...

   Meeting Document : WG-FSA-88/15 : Author(s): E. Barrera-Oro (Argentina)

7. Modelling availability bias using existing time series count data: Adélie penguins as a case study

   Abstract:  It is widely acknowledged that counts of Adélie and other penguin species at breeding ... the availability fraction at times other than the date of last egg lay. Differences in the ... sites in Antarctica during the breeding season are influenced by the date at which they are undertaken ... . A count of some attribute of the population on any date may therefore need to be adjusted by some ...

   Meeting Document : WG-EMM-04/54 : Author(s): L. Emmerson, B. Raymond and C. Southwell (Australia)

8. Age-length key for Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994

   specimens (>33 cm) were scarce. At South Georgia, fish of age groups 1-4 were truly represented; at Shag ... on the readings of otoliths randomly collected during the R/V Holmberg survey in Feb/Mar 1994. Small ... and medium sized fish (total length 12-33 cm) constituted the bulk of the samples (93%), while larger ... Rocks, a large concentration of fish belonging to age groups 2 (90%) and 3 (10%) was found. The length ...

   Meeting Document : WG-FSA-94/11 : Author(s): E. Barrera-Oro, E. Marschoff and R. Casaux (Argentina)

9. Results from the reduced groundfish survey conducted in CCAMLR Subarea 48.3 in January 2012

   -weighted length frequencies of mackerel icefish indicated that 2+ and 3+ sized fish dominated at Shag Rocks ... Abstract:  A reduced (three day) groundfish survey took place at Shag Rocks on the FV New Polar ... random hauls were completed around Shag Rocks with 3 additional opportunistic sites at South Georgia ... . Reasonable catches of Patagonian toothfish were found around Shag Rocks (greater than in 2009 and 2010), with ...

   Meeting Document : WG-FSA-12/37 : Author(s): J. Brown, S. Gregory, A. Stanworth, V. Carretero, G. Baker and M. Belchier (United Kingdom)

10. Stock assessment of D. eleginoides in Subarea 48.3 using dynamic production models

    estimates by years of fishing. Both models showed that the D. eleginoides stock status at the initial period ... of intensive fishery was at the level of 22-24 thousand tons. In 1989-1990 stock size increased (to ... in subarea 48.3. This type of the models differ from the models currently used by CCAMLR Working ... mortality, age selectivity, recruitment estimates, mean weight at age) In the calculations with DPM (with ...

    Meeting Document : WG-FSA-02/78 : Author(s): P.S. Gasiukov and R.S. Dorovskich (Russia)

Pages