Résultats de la recherche
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A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
locations of toothfish larvae after an 18–24 month period were moderately consistent with the distribution ... Paper Title: A hypothetical life cycle for Antarctic toothfish (Dissostichus mawsoni) in the Ross ... Sea region Abstract / Description: Aspects of the reproduction, size distribution and movements of ... Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region are reviewed. Based on the presumed ... . For the simulations reported here, the floats were released at the end of June and the loca- tions of ... . the floats went in the same direction but at a much slower rate). For the green end of the spectrum ... the continental shelf. For the red end of the spectrum of floats, the majority is swept to the ... veered to the south at around 62°S 150°W, coincident with the eastern end of the model’s eastern gyre ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 35–53 : Auteur(s): Hanchet, S.M., G.J. Rickard, J.M. Fenaughty, A. Dunn and M.J. Williams
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Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies
depredation. When killer whales were absent at the beginning of the line hauling process, short lines (<5 ... Paper Title: Interactions of Patagonian toothfish fisheries with killer and sperm whales in the ... mitigation strategies Abstract / Description: Within the Crozet Islands Exclusive Economic Zone (EEZ), the ... , killer whales alone, and the two species co-occurring were observed on 32.6%, 18.6% and 23.4 ... that killer whales could locate the fishing vessel before the end of this process. The effect of ... depredation. When killer whales were absent at the beginning of the line hauling process, short lines (<5 000 ... . After extrapolating the estimates made in these cells to the total number of hooks in the presence of ... -individual het- erogeneity in capture probability variations, was selected. After correction by the ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Auteur(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
Paper Title: Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77 ... -1986/87 Abstract / Description: The swept area method was used to estimate biomass density changes in ... the stocks of five fish species (Champsocephalus gunnari, Chaenocephalus aceratus, Pseudochaenichthys ... georgianus, Notothenia gibberifrons and Notothenia rossii marmorata) in the South Georgia area in the seasons ... the biomass density of C. ~ari stock. High biomass aensity appeared with ~year intervals after ... . Slosarczyk Sea Fisheries Institute, Gdynia, Poland 1. INTRODUCTION Beginning with the second half of ... in most of the subdivisions was especially visible after the 1981/82 season (Table IV, Figure 5 ... , beginning with 1985/86, young fish with lengths of 34-40 cm reappeared in the catch. In the last season ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Auteur(s): Mucha, M. and W. Ślósarczyk
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Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of mass and time of arrival of adults
with that of females. Although both species had low masses on arrival after the El Niño Southern ... Paper Title: Breeding numbers and success of Eudyptes penguins at Marion Island, and the ... , there was substantial correlation in the numbers of adults breeding at study colonies of macaroni ... filholi) over 22 years, suggesting that overwintering conditions may influence the proportions of birds ... /05 28 Oct 100 3 Nov 100 19 Feb 250 Crawford et at. 180 rockhopper penguins from about the end ... correlated with that of females. Although both species had low masses on arrival after the El Niño Southern ... island. A lookout was kept for returning birds from about the beginning of October in each season ... ). After 1994/95, once the colony at Trypot Hole had fallen below 70 pairs, it continued to decrease ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 175–190 : Auteur(s): Crawford, R.J.M., B.M. Dyer, J. Cooper and L.G. Underhill
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Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
krill biomass for the area. It was therefore only possible to begin to explain the reasons for the ... variability in the scale of krill swarms and to attempt to determine more reliable values of its biomass after ... Paper Title: Distribution, biomass and characteristics of the Euphausia superba fishery around ... South Georgia (Subarea 48.3) Abstract / Description: Krill distribution in the South Georgia area and ... biomass for the area. It was therefore only possible to begin to explain the reasons for the variability ... in the scale of krill swarms and to attempt to determine more reliable values of its biomass after a ... (Maslennikov, 1978; Makarov et al., 1980; Fedulov et al., 1984). After being carried along by the drift into ... and sink to deeper layers. After a time, however, the situation returns to its initial condition ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Auteur(s): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
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Seabird interactions with longlining operations for Dissostichus eleginoides at the South Sandwich Islands and South Georgia
Paper Title: Seabird interactions with longlining operations for Dissostichus eleginoides at the ... involving the setting and hauling of longlines to catch the toothfish Dissostichus eleginoides around the ... of the seabirds present presumably originated from South Georgia populations; however wandering and ... vulnerability to longlining operations in the South Sandwich Islands may, therefore, be low. Quantitative data ... first mate after the end of each haul. Ashford et a1 RESULTS Incidental Mortality No ... height from the aft gantry on the port side, the main line was more than 1 cm thick, there were no ... the line; they did not therefore reach sea level until well aft of the ship's stern. Additionally ... albatrosses (Diomedeiz melanophris) were present at the end of the two sets which overlapped with the early ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 143–153 : Auteur(s): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
whales occur during May at the start of the season with the sightings becoming fewer towards the end of ... Paper Title: Estimating the impact of depredation by killer whales and sperm whales on longline ... data collected on longliners between 2003 and 2009 were analysed to look at the levels of depredation ... , and often appear to actively seek out fishing vessels and ‘strip’ the line of a large number of ... the start of the season with the sightings becoming fewer towards the end of the season in August ... end of the season; over the seven years, 27% of observed sets have been set in May, 26% in June and ... at the start of the season in the east and at the end to the west, which could imply that the ... , continuing westwards towards the end of the season and moving on towards the Falkland Islands or South ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Auteur(s): Moir Clark, J. and D.J. Agnew
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Notothenia (P.) guntheri stock status and TAC estimation in the area of Shag Rocks (Subarea 48.3)
, using F regression on fishing effort and using average weighted F. Prior to the beginning of fishery N ... Paper Title: Notothenia (P.) guntheri stock status and TAC estimation in the area of Shag Rocks ... -1987/88 were used to analyse N. guntheri stock status. On the basis of these data using VPA method with ... . guntheri abundance was estimated as 227 thousand tonnes (using all the above mentioned methods). For 1986 ... fishing effort and using average weighted F. Prior to the beginning of fishery N. guntheri abundance was ... TAC ESTIMATION IN THE AREA OF SHAG ROCKS (SUBAREA 48.3) K. Shust and R. Borodin Abstract Data ... . guntheri stock status. On the basis of these data using V P A method with different adjustments stock ... estimated as 227 thousand tonnes (using all the abovementioned methods). For 1986/87 the figure was only ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 53-68 : Auteur(s): Shust, K. and R. Borodin
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An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island
survey conducted at the end of the 1997 fishing season would allow for a catch limit on the Heard Plateau ... Paper Title: An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island ... Abstract / Description: Assessments of the abundance and potential yield of the mackerel icefish ... (Champsocephalus gunnari) populations at Heard Island are developed from the results of four scientific surveys ... tonnes for Sliell Bank. An assessment based on the results of a survey conducted at the end of the 1997 ... difference in the upper end of the distribution arises because the catch consists of age classes other than ... end of the run to median spawning biomass at time 0) and the probability of depletion to below 0.2 ... classes. Based on the results of a survey conducted at the end of the 1997 fishing season, some interim ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 79–101 : Auteur(s): de la Mare, W.K., R. Williams and A.J. 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
end of the size range normally found on the grounds. These four long-range movers provide the first ... Paper Title: Movement, growth and available abundance to the fishery of Dissostichus eleginoides ... Patagonian toothfish (Dissostichus eleginoides) in different sectors of the Southern Ocean are considered to ... be genetically distinct. However, in the Indian Ocean, it is largely unknown whether stocks are ... was at the upper end of the size range normally found on the grounds. These four long-range movers ... short time. The fi sh that moved from ground A to Kerguelen was at the upper end of the size range ... Heard Island trawl fi shery (CCAMLR Statistical Division 58.5.2) in May 1998 after the fi shery itself ... started in April 1997. The tagging program was initiated after a successful program had been running on ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Auteur(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb