Search results
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Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999
Paper Title: Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish ... commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999 Abstract ... / Description: The distribution and internal structure of commercial krill concentrations were investigated in ... the areas of the South Shetland, Elephant, South Georgia and South Orkney Islands in the spring and ... aggregations at different times of day and night in the South Georgia area. Shevtsov and Makarov (1969) have ... used in order to determine the dura- tion of each haul. The beginning of trawling was the time at ... which shooting was completed and the net began to fi sh. The end of trawling was the time at which ... Distribution and size of krill in Polish commercial catches, 1997–1999 to 249 m) than at night (up to 149 m ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Author(s): Jackowski, E
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Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari
, probably because the birds at the former site are distracted from the longlines by the discharge of offal ... and Champsocephalus gunnari Abstract / Description: The behaviour of seabirds and the rate of ... . eleginoides and trawling for mackerel icefish (Champsocephalus gunnari) were also observed at Kerguelen. Many ... -chinned petrels (Procellaria aequinoctialis) were common only at Kerguelen. Bird mortality during trawling ... trawler Austral Leader. This was fishing for D. eleginoides 3 to 5 n miles to the west of the island at ... trawling at either location, even though the species composition of birds following the ships, and in ... low figure. Most of this mortality was observed on the one vessel with a netsonde cable where at ... , the impact of this mortality is tempered by the size of the population at Kerguelen (100 000 to 300 ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Author(s): Williams, R. and D. Capdeville
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Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region
Paper Title: Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes ... identification of a new species of Southern Ocean grenadier, Macrourus caml, which had hitherto been identified ... as M. whitsoni. The first comparison of the distribution and ecology of the two species of Macrourus ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... capture was taken to be the mean of the depth recorded on the fishing vessel at the start and end of ... setting. Depths at the start and end of setting differ (maximum difference of 606 m, median difference ... , 2011) using functions developed at the National Institute of Water and Atmospheric Research (NIWA ... ). Due to the lack of young fish, the t0 parameter was fixed at t0 of –0.159 (males) and 0.159 (females ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Author(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown
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Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia
T C C T T C T C C T T C C T T C C T T C No.of Weights 2 1 1 2 2 1 2 1 2 3 3 2 2 3 3 2 2 3 3 2 Hooks Set Observed ... of experiments was carried out in February 1999 at South Georgia (Subarea 48.3) to examine the ... used. Therefore to minimise seabird by-catch, line-weighting regimes of at least 8.5 kg at 40 m ... Paper Title: Experimental evaluation of the effectiveness of weighting regimes in reducing ... effects of different weighting regimes on the incidental mortality of birds caught on longlines fishing ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Author(s): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes
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Can toothfish catches be used to predict the presence of vulnerable benthic invertebrate taxa?
rates and benthic invertebrate catch rates at the scale of a longline segment, ~1 200 m. Analysis of the ... predicting Antarctic toothfish (Dissostichus mawsoni) catch at the scale of a longline segment. This supports ... catch at the scale of a longline set, ~7 km. Further studies at intermediate scales (10–100 km) would be ... Paper Title: Can toothfish catches be used to predict the presence of vulnerable benthic ... to correlate toothfish catch rates and benthic invertebrate catch rates at the scale of a longline ... aggregate VME indicator taxa weight and toothfish catch at the scale of a longline set, ~7 km. Further ... , currently exists at small spatial scales. The objective of this study is to use data col- lected by ... be conducted at the scale of longline segments. Weight of toothfish or numbers of other fish ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 87–96 : Author(s): Parker, S.J. and M.H. Smith
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Champsocephalus gunnari stock status in the South Georgia area
predicted period fishing intensity was at the level of that in 1987/88; (c) For the predicted period fishing ... shows that at the currently used value of stock size and even at the lowest possible recruitment levels ... / Description: ata of age composition and fishing effort for 1976/77-1987/88 were used to analyse stock status ... , Gamma methods, Pope and Shepherd method, using F regression on fishing effort and method of average ... fishing intensity was at the level of that in 1987/88; ( c ) For the predicted period fishing intensity ... that at the currently used value of stock size and even at the lowest possible recruitment levels and ... THE SOUTH GEORGIA AREA R. Borodin, P. Kochkin Abstract Data of age composition and fishing ... , using F regression on fishing effort and method of average weighted F. For 1986/87 the values ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 1-18 : Author(s): Borodin, R. and P. Kochkin
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Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
longline vessels operating in the Ross Sea were requested to randomly collect the first two icefish ... will be requested to collect small icefish (≤28 cm TL). The current work produced ages ranging between 1 and 11 ... . ccamlr.org/pu/e/e_pubs/sb/vol20.htm. Chang, W.Y.B. 1982. A statistical method for evalu- ating ... the data. Length-at-maturity and age-at-maturity ogives indicated that 50% of the fish sampled were ... mature at about 340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at ... , meristics, reproductive biology, diet and age estimation. All of the icefish sampled were identified as ... between December and February, but this was limited, probably due to the short temporal distribution of ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Author(s): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott
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Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea
ages at maturity of 6–7 years for males and 8–11 years for females. These estimates are near the middle ... to upper end of the range of ages at maturity for skates worldwide. The results of this study are ... Paper Title: Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea Abstract ... / Description: X-rays of vertebral half-centra, and x-rays and transmitted white light examination of caudal ... maturity for males and females (64 and 66–69 cm PL respectively) produced estimated ages at maturity of 6 ... the range of ages at maturity for skates worldwide. The results of this study are preliminary and ... -rays were taken of half-centra with a Phillips 45 kV X-ray machine at 5 mA. Caudal thorns were ... toothfi sh (Dissostichus mawsoni) stomach and preserved at the Museum of New Zealand (NMNZ P37792) were ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Author(s): Francis, M.P. and C. Ó Maolagáin
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Differentiation of independent populations of Antarctic krill
pattern ofEuphausia superba Dana. Trudy VNIRO, v. 77, p. 85-92. Makarov R.R. 1974. Dominance of larval ... -populations is expected to correspond with the number of quasi-stationary cyclonic water circulations. At ... present, at least six stable cyclonic water circulations can be found and at least two or three of them ... Paper Title: Differentiation of independent populations of Antarctic krill Abstract / Description ... : Several countries have recently shown an interest in commercial krill fishing. An understanding of krill ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Author(s): USSR
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On the presence of Paralomis spinosissima and Paralomis formosa in catches taken during the Spanish survey Antártida 8611
seven hauls of the 29 made around Shag Rocks and in 20 of the 104 hauls made at South Georgia. P ... Orkney, Elephant Island and South Shetland), at least in the depth range surveyed. The location of the ... Paper Title: On the presence of Paralomis spinosissima and Paralomis formosa in catches taken ... the archipelagos in the Scotia Sea. A total of 345 hauls was conducted, of which 29 took place around ... . spinosissima was caught in seven hauls of the 29 made around Shag Rocks and in 20 of the 104 hauls made at ... hauls conducted to the south and east of South Georgia, at depths ranging between 199 and 450 m; in ... south of Shag Rocks (Figure 1). At South Georgia (Figure 2), the species was found in hauls carried ... depths of 160 to 627 m, whereas P. formosa was taken at depths of 350 and 320 m, at stations 44 and 178 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 165–173 : Author(s): López Abellán, L.J. and E. Balguerías