Search results
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Spawning locations of mackerel icefish at South Georgia
CCAMLR Scierzce, Vol. 8 (2001): 107-118 SPAWNING ... n e n 5 I ~ O f i pb16b1 B sanPrBe K y ~ 6 e p n a ~ ~ Ha ... sector. Information on larval fish distribution came from several research cruises. During August 1983 ... pattern in each season with none being caught in the moi~ths froin September to January. The rnontl-tly ... data from commercial fisheries and research surveys. It is concluded that there is strong evidence of ... be at a very much lower intensity than inshore. There is some evidence of spawning at Shag Rocks ... adjacent coastal waters and their density declines exponentially offshore. All this evidence indicates that ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Author(s): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock
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Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives
for defining the terms 039;depleted039; and 039;target levels for recovery039; are briefly discussed ... being above the current level in year 20 (denoted PL,20> 0.95 in the table); (3) 50% confidence ... in the stock being above GNAl in year 20 (denoted PONAI.20 = 0.5 in the table); and (4) 95% confidence ... in the stock being above GNAl in year 30 (denoted PONAI.30 ~ 0.95 in the table). There are several points ... is such that the application of the normal policy of applying F 0.1 will not lead to the stock being restored to at or near ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Author(s): de la Mare, W.K. and A. Constable
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Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
and M = 0.16 (SC-CAMLR, 2001). As tagged fi sh are released in a group, they may not immediately mix ... has been published (Appleyard et al., 2001; Smith et al., 2001; Smith and McVeagh, 2000) which ... on a more local scale are less well defi ned; Appleyard et al. (2001) found very few genetic differences ... . These tags rely on being visually detected by personnel handling the fi sh. The tags are 50 mm in total ... they occur, but so far no such movement has been detected. It appears that fish tend to be locally ... , and so appear to be behaving differently from those fish that follow the normal pattern of residency ... be genetically distinct. However, in the Indian Ocean, it is largely unknown whether stocks are ... these data. The bulk of the data show that fish disperse only a very short distance, up to 15 n miles in ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Author(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
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Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)
metho- dology, and the importance of validating ageing methodologies is well understood (Campana, 2001 ... in which fi sh less than 60 cm total length (TL) are seldom caught (Hanchet et al., 2001). Horn (2002 ... toothfi sh (Dissostichus eleginoides) (Cassia, 1998; Kalish and Timmiss, 2001; Horn, 2002). Because ... -frequency data (with associated otoliths) exhibiting distinct juvenile modes (Jones et al., 2001 ... estimates agree with growth curves calculated previously from a sample of data that was large but lacked any ... D. mawsoni that had been injected with oxytetracycline some years before recapture. The six ... the Ross Sea (CCAMLR Subarea 88.1) have been aged assuming that one translucent zone is formed ... in each consecutive mode. This indicates that the modes represented year classes and that one ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 125–138 : Author(s): Horn, P.L., C.P. Sutton and A.L. DeVries
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Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (Subarea 48.3), Antarctica, during austral winters from 2002 to 2008
, with the abovementioned three species being abun- dant along with another five species, E. carlsbergi, E. antarctica ... . nicholsi from larvae to adults were found, suggesting that these species may have their nursery ground ... ichthyofauna in this area, although this species used to be dominant in the Antarctic coastal waters. In ... . Additionally, the size distribution of P. choriodon was unimodal, indicating that individuals in the samples ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Author(s): Iwami, T., M. Naganobu, K. Taki and M. Kiyota
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Exploratory fishing for Dissostichus spp. in the Antarctic region (Subareas 48.1, 48.2 and 88.3)
(Latitude 68°49039;S), and from the Bellingshausen Sea (70°38039;S) to Clarence and Elephant Islands (61 ... °14039;S), while Patagonian toothfish (Dissostichus eleginoides) were caught in waters from King ... George Island in the South Pacific Ocean (61°24039;S) to the Scotia Sea in the South Atlantic (58°03 ... 039;S). Yields of Dissostichus spp. were very low in the three subareas, with values of only 5.7 ... 0.744 21.0 16 0.430 3.5 1 0.071 365.7 860 7.455 27.7 31 0.565 71.5 13 1.458 1.9 5 0.039 ... with an average of in the three subareas, being only 19.1 g/hook hours/hau1 catch was 843 kg (79 kg (SD = 18.4 ... as being the Indian Ocean sector from 63'57's to 69O30'S Table 3: Somatometric characteristics ... "s. He defines the southern limit as being in the Pacific Ocean area, based on catches taken parallel ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 1–17 : Author(s): Arana, P.M. and R. Vega
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Moulting interval and growth of juvenile Antarctic krill fed different concentrations of the diatom Phaenodactylum tricornutum in the laboratory
A BL. BeJIHqHHa IP AOCTHrJIa MaKCHMYMa 3a 23,8 CYTOK, a A BL npH· 1,14 . MM. ITo 3THMpe3YJIbTaTaM ... , 1.14mm. From these results, maximum daily growth rate (∆BL /IP) of juvenile krill was calculated to be ... field. Growth conditions of krill in the Southern Ocean are discussed, with special reference to the ... available food concentration. Note: The full text of this paper will be published under the above title in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 223-225 : Author(s): Ikeda, T. and P.G. Thomas
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Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements
HM3KMe OUeHKM 6Ho~accb1 KPMJIR BePHbI, IIO pe3ynbTaTaM H O B ~ I X c5eMoK perHoHanbHbIe M cyMMapHbIe ... of significant concentrations of krill being regularly found in areas that were not identified in the Discovery ... require that the density in the areas where krill is most abundant is being underestimated ... ) worked backwards from the area in which he saw krill being available for whales (16.7 million km ... tonnes- at the low end of values that have been suggested in the past. The differences between our ... estimates and others can be explained by a number of factors such as: an underestimation of the range or the ... value used in the past. The seasonal and local consequences of large catch limits will have to be taken ... statistical divisions as management areas will have to be considered. File: 05nicol-etal.pdf ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Author(s): Nicol, S., A.J. Constable and T. Pauly
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Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3
vessels fi shing within Subarea 48.3 between June and August 2001. Specimens were frozen ... ., 2001), and discarded by- catch fi sh are known to be taken by black-browed and grey-headed albatrosses ... , M. Lewis and R.W. Williams. 2001. Trophic interactions between the Patagonian toothfi sh, its fi shery ... less accurate estimates of fish length. Seasonal variations in fish mass with reproductive condition ... need to be considered if predictions of fish mass from otolith mass are undertaken. Otolith size/fish ... size models should be derived for each fish population under investigation. The length of fish chosen ... in such studies should be representative of the size range consumed by predators. File: 09morley ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Author(s): Morley, S. and M. Belchier
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Assessing the power to detect systematic change in Adélie penguin foraging trip duration
). DMSP SSM/I daily polar gridded sea ice concentrations, June to September 2001. Maslanik ... ecosystem health. Biol. Cons., 92 (2): 185–197. Irvine, L.G., J.R. Clarke and K.R. Kerry. 2000. Low ... Penguin Trip Guard 0.038 (8) 0.039 (8) 0.118 (24) 0.289 (60) Crèche 0.023 (2) - 0.131 (14) 0.772 (83 ... . While foraging trip duration is considered to be sensitive to changes in food availability over time ... years of post-impact monitoring to detect systematic change with high power unless one were willing to ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 201–215 : Author(s): Southwell, C., J. Clarke and L.M. Emmerson