Resultados de la búsqueda

1. Towards an assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea: data from predators

   exploitation of the sub-Antarctic ommastrephid species Martialia hyadesi will be attempted in the future. This ... seal and is probably taken in significant quantities by several other Southern Ocean vertebrate ... predators. Estimated annual consumption by known predators in the Scotia Sea is 326098- 330642 tonnes, 94 ... and its significant role in the diet of some vertebrate predators the species is clearly important ...

   Meeting Document : SC-CAMLR-IX/BG/13 : Autor(es): Delegation of United Kingdom

2. Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates

   CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... detection rate of recaptured fish. This method was applied to the tagging data in CCAMLR Subareas 88.1 and ... 88.2. Results show that the indices developed can provide evidence of significant differences in ... indices are robust to the choice of the control group and the area included in the analysis, as well as ...

   Meeting Document : WG-FSA-12/47 Rev. 1 : Autor(es): S. Mormede and A. Dunn (New Zealand)

3. Analysis of seamount-specific catch and tagging data in the Amundsen Sea, SSRU 88.2H

   features in SSRU 88.2H were analysed to compare multiple raw indicators of biomass trends in isolated local ... liberty for less than 2 years, and that data from the Amundsen Sea slope SSRUs (88.2C–G) are included in ... the stock assessment along with 88.2H. Fishing has occurred on almost every seamount in every year ... , and no evidence for serial depletion or spatial patterns that would produce a current bias in ...

   Meeting Document : WG-SAM-14/27 : Autor(es): S.J. Parker (New Zealand)

4. Development of a spatially-explicit minimum realistic model for Antarctic toothfish (Dissostichus mawsoni) and its main prey (Macrouridae and Channichthyidae) in the Ross Sea

   predation mortality (M2), in addition to fishing mortality (F) on all three species. The model suggests that ... fishing mortality on both prey species and that icefish is expected to show a larger increase in biomass ... Holling type II function to describe the predatory relationships in the model. We use the model to compare ... of the nature of the interaction. Whilst this model is in a development stage, it provides a useful ...

   Meeting Document : WG-EMM-14/51 : Autor(es): S. Mormede, M. Pinkerton, A. Dunn, S. Hanchet and S. Parker (New Zealand)

5. Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)

   Abstract:  Grenadiers (Macrourus spp.) are the main bycatch species in the exploratory longline ... fishery for toothfish in the Ross Sea. Previous studies concluded that acoustics methods could be used to ... targets was similar to that predicted based on the expected size range of grenadiers. Variability in ... vessels in SSRU 88.1I. The next step will be to apply to these methods to a wider set of data across the ...

   Meeting Document : WG-FSA-14/62 : Autor(es): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)

6. Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)

   Abstract:  No reliable measures of age currently exist in the Antarctic krill, Euphausia superba ... (Dana, 1852). The eyestalks from 51 individuals were dissected, cut in longitudinal sections and studied ... February 2015, and varied between 30 and 53 mm in total body length. Up to six growth zones were identified ... the number of zones and body length. Further knowledge about molting process in the Antarctic krill ...

   Meeting Document : WG-EMM-16/P02 : Autor(es): B.A. Krafft, M. Kvalsund, G. Søvik, E. Farestveit and A.-L. Agnalt

7. Acoustic monitoring and evaluation of krill in the Antarctic ecosystem Bransfield Strait and around Elephant Island during ANTAR XXI and XXII, aboard RV Humboldt, Peru

   (Euphausia superba) was held on board the BIC Humboldt during scientific campaigns Peru to Antarctica in the ... from the surface to 20 m deep. A wide distribution of krill in the study area, the highest densities ... were recorded in the Bransfield Strait and between Deception Island and Isla Torre (250-1 000 m / mn ... biomass in Elephant Island (4'569,039 t) represents 62.3% of all existing biomass in the study area ...

   Meeting Document : WG-EMM-16/76 : Autor(es): R. Cornejo, M. Flores and J. Zuzunaga

8. Precautionary management of the Antarctic krill fishery at small spatial scales in the context of regional climate variability: pros and cons of coastal buffers, closed areas and move-on rules

   Abstract:  In this paper, we briefly review recent environmental information for the Antarctic ... Peninsula, highlighting how both natural variability in near-surface air temperatures and longer term ... changes in the oceanic domain add to the complexity of managing the Antarctic krill fishery, particularly ... , mortality events were observed. Fishing in close proximity to some colonies also occurred and it is ...

   Meeting Document : SC-CAMLR-XXXV/BG/14 : Autor(es): Delegation of the United Kingdom

9. Results of 2016 pop-off satellite archival tagging of Antarctic toothfish in the Ross Sea region

   Abstract:  In 2016, scientists from the USA and New Zealand undertook a collaborative initiative ... were released on the southern Ross Sea shelf in the austral summer, and 5 PSAT tags were released on ... the northern seamounts in the austral winter, for a total of 15 PSAT releases. Of the 10 PSAT releases ... in the southern Ross Sea, data from two tags were reported via Argos (one with full data, one with ...

   Meeting Document : WG-SAM-17/33 : Autor(es): C.D. Jones and S.J. Parker

10. Integrated research proposal for Dissostichus spp. in Subarea 88.3 by the Republic of Korea, New Zealand and Ukraine

    Abstract:  A research plan for Subarea 88.3 was commenced by Korea in 2016 and New Zealand joined ... the proposal in 2017. The joint research proposal was for 3 years covering the period 2017/18, 2018/19 ... . Following a proposal from the Ukraine to join the research plan in 2018, the Scientific Committee requested ... integrated proposal is unchanged, i.e., to determine the abundance and distribution of Antarctic toothfish in ...

    Meeting Document : WG-SAM-2019/02 : Autor(es): Delegations of the Republic of Korea, New Zealand and Ukraine

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