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1. Mitigating killer whale depredation on demersal longline fisheries by changing fishing practices

   identify fishing practices that could reduce odontocete depredation, with a focus on killer whales (Orcinus ... be more accessible to whales that are initially distributed on peri-insular shelves. The CPUE was ... with significant losses for fisheries and potential impacts on wild populations of depredating species ... orca) interacting with Patagonian toothfish (Dissostichus eleginoides) longliners off the Crozet ...

   Meeting Document : WG-FSA-14/P03 : Autor(es): P. Tixier, J. Vacquie Garcia, N. Gasco, G. Duhamel and C. Guinet

2. Preliminary analysis of seabird by-catch in the South Georgia icefish fishery

   suggest that there may be a year effect. We were unable, with the limited data available, to separate ... trawl fishery for icefish (Champsocephalus gunnari) in Subarea 48.3. From December 2000 – February 2001 ... 92 birds were caught, principally black-browed albatross and white-chinned petrel, with 93% of the ... birds being caught in February. GAM/GLM analysis suggested that month and vessel were significant ...

   Meeting Document : WG-FSA-01/30 : Autor(es): D.J. Agnew, N. Ansell and J.P. Croxall (United Kingdom)

3. Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples

   units are selected with a probability that is a function of the response. In sampling to obtain fish to ... random length frequency sample. When the selectivity of the gear combined with availability of fish to be ... parameter estimation has been studied for linear and generalized linear, and linear mixed models but since ...

   Meeting Document : WG-FSA-SAM-05/13 : Autor(es): S.G. Candy (Australia)

4. Classification of Southern Ocean krill and icefish echoes using Random Forests

   are similar to those for many co-occurring fish species that do not possess swim bladders. At South ... pelagic aggregations, which can be difficult to distinguish acoustically from large krill layers. Mackerel ... icefish are currently surveyed using bottom-trawls, but the resultant estimates of abundance may be biased ... during surveys. The final random forest classified krill, icefish, and mixed aggregations of weak ...

   Meeting Document : WG-EMM-16/23 : Autor(es): N. Fallon, S. Fielding and P. Fernandes

5. A synoptic review of energetic requirements of southern ocean krill predators

   requirements of krill predators that may be in the most direct competition with the krill fishery. These krill ... fur (Arctocephalus gazella) seals. Basal, active, and. reproductive energy ' requirements are ... compiled for each species. Estimates' of the amount of krill needed. to sustain individuals and/or ...

   Meeting Document : WG-EMM-96/19 : Autor(es): Stansfield, A.M.

6. Histopathology of Antarctic krill, Euphausia superba, bearing black spots

   superba, since January, 2001. To study the nature of the black spots, the krill were sampled in the winter ... revealed that the black spots were melanized nodules that were composed of hemocytes surrounding either ... of the krill that had melanized nodules. These parasites were directly surrounded by the large ... heteromorphic cells. Histological observations suggested that these heteromorphic cells were attacking the ...

   Meeting Document : WG-EMM-08/P09 : Autor(es): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu

7. Exploration of CPUE standardisation variances in the Ross Sea (Subareas 88.1 and 88.2A South of 70°s) Antarctic toothfish (Dissostichus mawsoni) exploratory longline fishery

   effort should be used for catch rates in mixed longline fisheries, and (2) how do different parameters ... size. This confirms previous advice that research fishing is conducted with a high level of spatial and ... (hooks/cluster) with Generalised Linear Models (GLMs). The model with total hook numbers was preferred ... with the lowest Akaike’s Information Criterion (AIC), however standardised catch rates over the fishing ...

   Meeting Document : WG-SAM-2019/25 : Autor(es): D. Maschette, S. Wotherspoon and P. Ziegler

8. A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the 2004/05 season

   parameters. However, multi-chain comparisons and sensitivities with fixed selectivity ogives suggested that ... yields, using the CCAMLR decision rules, were estimated to be 2964 t although continued catch at current ... levels (3207 t) would not be expected to breach the 50%B0 threshold until 2029. Author(s):  A. Dunn, D.J ... ). A range of model sensitivities were examined, with the base case assuming the Ross Sea fishery as a ...

   Meeting Document : WG-FSA-05/33 : Autor(es): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)

9. Network characterisation of the food-web of the Ross Sea, Antarctica

   trophic level; (2) mixed trophic impact; and (3) ecological importance. Note that the analysis considers ... not resolved by this analysis. The Ross Sea food-web is a partially inverted biomass pyramid with a ... the total living biomass in the Ross Sea (bacteria excluded). The six groups with the highest ‘indices ... importance in the Ross Sea food-web. These eight groups should be the priorities for monitoring for large ...

   Meeting Document : WG-EMM-12/53 : Autor(es): M.H. Pinkerton and J.M. Bradford-Grieve (New Zealand)

10. Report on an Antarctic cetacean survey on board a Chilean fishing vessel in February 2016

    , 35 sightings of mainly mixed-species groups and feeding aggregations of large whales were observed ... survey show that the areas around the Southern Orkneys and Elephant Island are important feeding grounds ... for fin-, humpback and, to a lesser extent, sei whales. If any fishing effort is to be undertaken in ... these areas, no disturbance within these comparably small areas of high animal density should be ...

    Meeting Document : WG-FSA-16/19 : Autor(es): S. Viquerat, H. Herr, K.-H. Kock and P. Arana

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