Résultats de la recherche
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The Status of the Champsocephalus gunnari Stock in the South Georgia Area
observed in recent years cannot be sustained. There is no clear relationship between the size of the ... Abstract: This study focuses on the Chamsocephahus gunnari stock around South Georgia. The ... the relationship between the spawning stock and number of recruits. A conventional VPA and an ad hoc ... tuning method are used to estimate biomass levels and fishing mortality for the period 1971/72 to 1988/89 ...
Meeting Document : WG-FSA-89/8 Rev. 1 : Auteur(s): M. Basson, J. Beddington (United Kingdom) and W. Ślósarczyk (Poland)
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Description of the tagging process and the development of a cradle for optimum landing and measuring of large fish followed by the Spanish F/V Tronio
Abstract: During the 2017/18 season the Spanish F/V Tronio fished in Statistical Subarea 88.1 and ... Division 58.4.1 where the latter area required a tag rate of five fish per ton greenweight caught and also ... where the overall size of the fish exceeds 115cm. The tagging station on the FV Tronio is on the upper ... deck above the hauling station providing easy access to retrieve smaller fish directly from the hauling ...
Meeting Document : WG-FSA-18/48 Rev. 1 : Auteur(s): R. Sarralde, C. Heinecken and P. Lafite
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Preliminary results on the composition and abundance of the krill stock in the southern Bellingshausen Sea (Antarctic, CCAMLR Subarea 88.3)
effects on the krill stock. Spawning was late during the studied season, no larvae were found in the area ... south of 66°S, between 68°W and 120°W. Krill Euphausia superba abundance and biomass was in the lower ... range of values generally found in the Antarctic Peninsula and Elephant Island region. A distinct ... the East Wind Drift zone and larger ones further north under the influence of West Wind Drift waters ...
Meeting Document : WG-EMM-95/18 : Auteur(s): Siegel, V.
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The 2014 annual random stratified trawl survey in the waters of Heard Island (Division 58.5.2) to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari
Abstract: The annual random stratified trawl survey (RSTS) at HIMI was conducted during June of ... 2014, with the completion of 158 stations. An additional five stations were completed at Shell Bank ... , which had not been sampled since 2005. The catches of C. gunnari were less than half of those in 2013 ... , but catches of both D. eleginoides and C. gunnari were higher than the long-term average (2006-2013 ...
Meeting Document : WG-FSA-14/41 : Auteur(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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Results of the longline survey for toothfish in the northern Ross Sea region (Subarea 88.2 SSRUs A–B) by the FV Janas, New Zealand
toothfish populations in the northern areas (60°‑ 66° S) of Subarea 88.2 SSRUs A–B. Sampling strategy and ... and no Patagonian toothfish were caught. Toothfish catch rates, size, sex ratio, and reproductive ... maturity status were similar to existing data from SSRU 88.1C. In contrast, the gonadosomatic index and the ... sex-specific Fulton’s condition factor observed in the northern region of SSRU 88.2B were lower than ...
Meeting Document : WG-SAM-15/46 : Auteur(s): S.J. Parker, R.J.C. Currey and S. Mormede (New Zealand)
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Research program to examine the life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region marine protected area (RSRMPA) in 2018–2027
Abstract: The Russian Federation is going to continue investigation for toothfish in Ross Sea ... . The previous Russian program was undertaken in the Subarea 88.2 in 2010–2012. This paper presents the ... research program in the frame of the research and monitoring associated with the Ross Sea region marine ... protected area. Russian research program have objectives to investigate the life-cycle, distribution and ...
Meeting Document : WG-FSA-18/33 Rev. 1 : Auteur(s): Delegation of the Russian Federation
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Exploring trends of the krill fishery indicators among the NWAP D1MPA zones in the Subarea 48.1
been intensively discussed. Its implementation will establish a new scenario for the current krill ... fishing fleet dynamic, therefore it is necessary to understand what represent each D1MPA zones for the ... fishery. We analysed the trend of different fishing indicators among the D1MPA zones during the period ... 2013-2017, including as an independent zone the main fishing hotspot established recently in Bransfield ...
Meeting Document : WG-EMM-2019/41 : Auteur(s): F. Santa Cruz, L. Krüger, L. Rebolledo and C. Cárdenas
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DISCRIMINATION OF ENVIRONMENTAL VARIABLES THAT INFLUENCE THE CATCH PER UNIT EFFORT: THE CASE OF THE ANTARCTIC KRILL FISHERY
the APSL with no lag. We concluded that TFM constitute a promising tool for including environmental ... Abstract: The use of the catch per unit effort (CPUE) as an index of abundance usually requires a ... from the CPUE time-series. These exogenous factors include those generated by modifications in fishery ... vessel efficiency, variations in fishing strategies, and environmental fluctuations. The selection of the ...
Meeting Document : WG-EMM-11/P3 : Auteur(s): J.C. Quiroz, R. Wiff, M.A. Barrientos and F. Contreras
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The influence of environmental variables and mitigation measures on seabird catch rates in the Japanese tuna longline fishery within the Australian Fishing Zone, 1991–1995
Abstract: Long term fisheries observer data were used to analyse the influence of a range of ... environmental variables and mitigation measures upon catch rates of seabirds in the Japanese pelagic longline ... fishery. In the Australian Fishing Zone (AFZ) seabirds were most likely to be caught on longlines that ... were set during summer, in southern areas of the zone, and during daylight hours. However ...
Meeting Document : WG-FSA-98/32 : Auteur(s): N. Brothers, R. Gales and T. Reid (Australia)
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An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea
deployed in the Weddell Sea, Southern Ocean. The glider was deployed for two short periods in January 2012 ... , in separate survey boxes on the continental shelf to the east of the Antarctic Peninsula, to assess ... the distribution of Antarctic krill (Euphausia superba). During the glider missions, a research vessel ... using the stochastic distorted-wave Born approximation (SDWBA) target strength model. A sensitivity ...
Meeting Document : WG-EMM-14/P02 : Auteur(s): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths