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1. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

   the basis of data obtained from AtlantNIRO expeditions from 1983 to 1990 in the Scotia Sea. A ... methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... and netting and also the probability that krill will come into contact with various parts of the net ... as it passes through the trawl sides. Studies were based on the results of 250 hauls made with a 72 ... trawl. Beginning at the trawl bag and ending at the rope section, fine-meshed chafers were placed on ... bag affects the rate of krill being squeezed through the net. 5. CONCLUSION After examination of ... (metres) 40 35 37 Trawl length along the belly rope line from the end of the wings to the end of the ... . Frolov** Abstract Research into midwater trawl catchability rates was carried out on the basis of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Автор(ы): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

2. Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels

   with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... fishing operations the netting bags abrade on the seabed causing rocks to be lost and the weights to ... no maintenance. An experiment was conducted on a Spanish-system longline vessel to determine the ... relationship between the sink rates of longlines equipped with bags of rocks (4, 6 and 8 kg) and those with ... seabirds in the first several seconds after deploy- ment, because the buoyant lines between weights float ... and at each end of the basket. As lines are payed out, crew con- nect the hauling and hook lines with ... weight is attached to the end of each one (Figure 1). The branch/connecting lines can be fitted with a ... Cast Iron Company – www. china-cast-iron.com). However, after production of about half the 70 required ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Автор(ы): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon

3. Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds

   of 4.2 mm. The studies covered 6 major fish species. It appears from the study that Antarctic icefish ... and bumphead notothenia are subject to selection during trawling, although the effectiveness of this ... process- especially in the latter case- is not satisfactory. Scotia Sea icefish, Chaenodraco wilsoni, and ... Chionodraco rastrospinosus exhibit a lower tendency to pass through meshes of the codend than Antarctic ... way. 2. OBJECTIVE OF THE STUDY After the introduction of codend mesh-size regulations in the ... codend only from the part equipped with the cover. They were later trapped in the end parts of the cover ... measurements were carried out immediately after the trawl retrieval (wet) with an international ICES caliper ... : before trawl use, dry and wet, after the first haul (3 hours of use) and after each subsequent 15 hours ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Автор(ы): Zaucha, J.

4. Growth and natural mortality of Patagonian rockcod (Patagonotothen guntheri shagensis) from Shag Rocks shelf

   shagensis) from Shag Rocks shelf Abstract / Description:  The parameters of Bertalanffy’s growth equation ... -weight data of research and fishery survey cruises in the Shag Rocks area from 1978 to 1986. The natural ... mortality rate was assessed by six different methods and was within a range of 0.63 to 1.06. The mean value ... of natural mortality M=0.8 was used in calculations and the optimal age and length for harvesting ... the beginning of the fishery) were used. The value of M was estimated by comparing natural logarithms ... P.g. shagensis before the beginning of fishing is shown in Figure 2. The mean age of fish was ... ) ) = 12.6 cm where to = theoretical time of the beginning of growth (0.1149). The results presented can ... ROCKCOD (PATAGONOTOTHEN GUNTHERI SHAGENS/S) FROM SHAG ROCKS SHELF V.1. Shlibanov Abstract The ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 111–121 : Автор(ы): Shlibanov, V.I.

5. Protecting young fish and spawning aggregations of Champsocephalus gunnari in Subarea 48.3 (South Georgia): a review

   Subarea 48.3 (South Georgia): a review Abstract / Description:  The need to protect young fish and ... spawning aggregations in fisheries generally, and specifically in the Champsocephalus gunnari fishery in ... Subarea 48.3, is reviewed. Mechanisms available to achieve these objectives are discussed, including the ... measures put in place by CCAMLR to date. These measures are re-examined in the light of new information ... because it was several days after the end of the following Commission meeting, therefore enabling further ... sufficient numbers After the original drafting of this paper, during the 1999/2000 CCAMLR season, two ... is the long closed season between 1 April and the end of the following Commission meeting, first ... tween 1 April and t h e end o f the Commission meet ing i n 1993 (as i n t h e 1990/91 season ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 75–86 : Автор(ы): Parkes, G.B

6. Seabird interactions with longlining operations for Dissostichus eleginoides around South Georgia, April to May 1994

   during hauls. The 16 sets made at night contributed 15% of overall mortality, all of white-chinned ... petrels (Procellaria aequinoctialis); the four day sets contributed 85% of deaths, with giant petrels ... disproportionately affected in relation to their numbers near the fishing vessel; giant petrels may be ... disproportionately affected in relation to the size of their breeding population at South Georgia when compared to ... and close to the main line. After the first 20 sets, a streamer line meeting CCAMLR specifications ... from the hauling point with a single discharge of offal at the end of a haul and (ii) bird density ... the end of their breeding season. Behavioural strategies may also be significant. Thus, for grey ... , especially if this occurs in the same area or follows immediately after the haul. Mitigating Devices ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 111–121 : Автор(ы): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno

7. Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari

   and Champsocephalus gunnari Abstract / Description:  The behaviour of seabirds and the rate of ... (Dissostichus eleginoides) in the 1994/95 season near Macquarie Island and Kerguelen Island. Longlining for D ... seabirds were constantly observed near the vessels, especially giant petrels (Macronectes halli and M ... associated with longlining in the Kerguelen region were lower than those reported for the South Georgia area ... . As with the longline fishery, the capture of birds was only observed after the end of the brood ... birds can be summarised as follows: After the first few hauls, the number of birds attending the ... by. Skuas (Catharacta antarctica) were first seen around the ship four weeks after fishing started ... and up to four birds were seen from then until the end of fishing. Two shy albatrosses (D. cauta ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Автор(ы): Williams, R. and D. Capdeville

8. Characteristics of krill swarms from Prydz Bay

   Paper Title:  Characteristics of krill swarms from Prydz Bay Abstract / Description:  The ... CCAMLR.AUS dataset available to the Subgroup on Survey Design was derived from a survey of Prydz Bay ... inter-swarm length were calculated for swarms of euphausiids encountered along a 78 km transect over the ... continental shelf close to the CEMP study site at Magnetic Island. The euphausiid species was probably ... encounter with the next swarm. The latter is particularly important in determining the end or the ... are distortions introduced by the decreased ping rate after 1800 hours discussed above, and the true ... before the 30 km point. 4. DISCUSSION The analysis was hampered by the change in ping rate after 1808 ... transformed intercepted swarm length before (a) and after (b) the change in ping rate at 1808 hours GMT ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 177–189 : Автор(ы): Agnew, D.J. and I.R. Higginbottom

9. Validation of sink rates of longlines measured using two different methods

   of the ground line – IW-50 lines) were measured during commercial fishing operations using two ... = –0.181, P = 0.859). When the target depth was 15 m, sink rates measured using the bottle method (0.20 ... behind the vessel, i.e. out of the observer’s sight, when they reached the target depth. Bottles had a ... sight behind waves or in congregations of seabirds before the target depth was reached. No TDRs were ... on the sink rates caused by the anchors at either end of the lines. When lines were set during the ... wrapped around the body of the bottle. A shark clip, as used for the TDRs, was fastened to the end of ... the cord. The end of the string was loosely attached to the bottle with a piece of sticky tape that ... can be scrutinised long after the data were collected. With the bottle test, an observer has only ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 179–187 : Автор(ы): Wienecke, B. and G. Robertson

10. Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96

    for rockhopper penguins were 0.68 eggs and 0.48 respectively. The largest of the three macaroni ... penguin colonies investigated decreased in size over the study period, while the other two remained stable ... . The only significant relationship between inter-season trends in the number of pairs breeding at the ... transfer. The larger two of the three rockhopper penguin colonies investigated decreased over the study ... , as before towards the start and end of breeding, but also soon after hatching, when the number of ... ). This paper summarises results to the end of the 1995/96 summer season and compares trends in breeding ... end when chicks were in creches. On the first visit the number of incubating adul ts was counted ... Van den Boogaard River and the other colonies were similar after 1989/90 (Figure 3). At Van den ...

    Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Автор(ы): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford

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