WG-FSA-96/01 More Info |
Provisional agenda and annotation to the provisional agenda for the 1996 meeting of the Working Group on Fish Stock Assessment (WG-FSA) |
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WG-FSA-96/02 More Info |
List of participants |
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WG-FSA-96/04 More Info |
Brief information on fishing operations conducted by SRTM Primorets inside economic zone of Kerguelen Islands during the period of 1994/95 Chikov, V., Frimer, V., Vertunov, A. |
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WG-FSA-96/05 More Info |
Summarised data on operation of RTMS Vozrozhdenye inside economic zone of Kerguelen Islands during the season of 1994/95 Domashenko, Yu., Goubanov, E. |
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WG-FSA-96/06 More Info |
Seabird by-catch and bait loss in longlining using different setting methods Løkkeborg, S.
Abstract:
Sea-birds taking baits during longline setting occationally become caught and are killed, while the associated bait loss may have serious impact on longlining efficiency and profitability. Two different setting methods were tested as a solution to this problem; lines were set either through a setting funnel that guided the baited line beneath the sea surface or when using a sea-bird scaring Read More
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WG-FSA-96/07 More Info |
Ukrainian data update Secretariat |
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WG-FSA-96/08 More Info |
The pelagic distribution of South Georgia albatrosses and their relationship with fisheries Croxall, J.P., Prince, P.A., Wood, A.G., Trathan, P.N. |
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WG-FSA-96/09 More Info |
Population dynamics of wandering albatross Diomedea exulans and Amsterdam albatross D. amsterdamensis in the Indian Ocean and their relationships with longline fisheries: conservation implications Jouventin, P., Brothers, N., Weimerskirch, H.
Abstract:
Studies carried out over the past three decades at Crozet and Kerguelen Islands in the Indian Ocean indicate that wandering albatross Diomedea exulans populations declined markedly, but since 1986 have shown slow recovery. The population of the endangered Amsterdam albatross Diomedea amsterdamensis appears to have similarly recovered since 1985, but remains close to extinction. A demographic Read More
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WG-FSA-96/10 More Info |
Incidental mortality of seabirds around Kerguelen Islands (Division 58.5.1) and effectiveness of mitigation measures: 1993/94 to 1995/96 cruises Capdeville, D.
Abstract:
Incidental captures of seabirds were observed during 93/94 to 95/96 longlining fishing campaigns around Kerguelen islands (division 58.5.1). Mean by-catch rate is 0.81 birds / 1.000 hooks. The species mainly affected is the White-chinned Petrel Procellaria aequinoctialis (86 %), because of its diving faculty. The different ways to minimize seabird by-catch proposed by CCAMLR are tested and Read More
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WG-FSA-96/11 More Info |
By-catch in the longline fishery along the shelf slope of Kerguelen (Division 58.5.1) during the 1994/95 and 1995/96 cruises Capdeville, D., Duhamel, G.
Abstract:
By-catch was observed during two successive cruises of longliners fishing for Patagonian toothfish Dissostichus eleginoides in approximately 500m depth along the shelf slope in the west of Kerguelen. By-catch consisted mainly of Rajidae Bathyraja spp. (85 %). The proportion of species taken in the by-catch was low (less than 0.75%) and does not represent a problem at the present level of Read More
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WG-FSA-96/12 More Info |
Impact of marine mammals on longline fishery around Kerguelen Islands (Division 58.5.1) during 1995/96 cruise Capdeville, D.
Abstract:
Interactions between longliners, fishing for Patagonian toothfish Dissostichus eleginoides in the west of Kerguelen islands during 1995 - 96 cruise, and marine mammals occured with Kerguelen Fur Seals Arctocephalus gazella. They catch 0.75 % of toothfish on long-lines where interaction occured, but 2.2 % were lost alongside the vessel.
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WG-FSA-96/13 More Info |
Composition and vertical distribution of the benthopelagic ichthyofauna of the southern part of the Kerguelen ridge Piotrovsky, A.S.
Abstract:
AS many as 18 species of benthopelagic fishes belonging to 12 families were caught in trawls during the integrated surveys in December 1977 and in January 1978 on Elan Bank consisting of two sublatitudinal sea-bottom elevations with prevailing depths from 960 to 1350 m. Among these fishes there were found both species inhabiting exclusively in sub-Antarctic and Antarctic waters (endemies) and Read More
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WG-FSA-96/14 More Info |
Squalus acanthias – a new species in the Antarctic ichthyofauna (Division 58.5.1) Pshenichnov, L.K.
Abstract:
Four species of shark have been known to date to occur in the sub-Antarctic waters: Lamna nasus, Somniosus microcephalus, Etmopterus lucifer, E. granulosus. A specimen of Squalus acanthias was captured in February 1995 on the shelf of the Kerguelen Islands from the depth of about 195 m and duly described . Squalus acanthias is believed to be one of the most widespread shark species in the Read More
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WG-FSA-96/15 More Info |
Potentially commercial invertebrates on Ob Bank: Moroteuthis ingens (Oegopsida) and Paralomis aculeata (Anomura) (Division 58.4.4) Pshenichnov, L.K.
Abstract:
The cephalopods of the Antarctic are supposed to have a very high biomass level However, they have not been fished nor any fishable aggregations of them detected to date in the CCAMLR Convention Area. The squid Moroteuthis ingens has been constantly present in bottom trawl catches on Ob Bank during aimed fishery for Lepidonotothen squamifrons. At maximum, the proportion of squid in the total Read More
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WG-FSA-96/16 More Info |
Some specific characteristics of Dissostichus eleginoides biology in the vicinity of the Kerguelen Islands (Division 58.5.1) Pshenichnov, L.K.
Abstract:
For recent years Dissostichus eleginoids is the main target species of trawling and long-line fisheries in the vicinity of the Kerguelen Islands. Results of research made by the author on board the fishing vessel "Poltava" in the summer season 1991-1992 were the base for the present paper. Regular direct distribution of size groups D. eleginoides in depth range within the fishing area on the Read More
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WG-FSA-96/17 More Info |
The by-catch of juvenile fish in midwater krill trawls in the South Georgia area from 1967 to 1990 Nevinsky, M., Shust, K. |
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WG-FSA-96/18 More Info |
By-catch of juvenile fishes – the Antarctic krill fishery Moreno, C.A.
Abstract:
One of the non-solved problems in krill exploitation has been the by-catch of fish larvae that use (or co-occurred) the krill swarms as their habitat. The detection of this problem started together with the massive antarctic krill exploitation during the 80's. There has been recognized several fish species whose larvae develop within the krill swarms, nevertheless, few have been the Read More
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WG-FSA-96/19 More Info |
Results on by-catch of fish during Ukrainian, Polish and Japanese krill fishery in the South Orkney Islands, South Georgia and Shetland Islands areas Cielniaszek, Z., Pakhomov, E.A., Iwami, T.
Abstract:
Observations on abundance of by-catch fishes were made during fishing operations for krill Euphausia superba Dana conducted by the Ukrainian trawler Grigory Kovtun in the vicinity of South Georgia (May to July, 1992), the Polish trawler Lepus on the fishing grounds of South Orkney Islands and South Georgia (March to May, 1993), and by the Japanese fishing vessels No.3 and No.5 Chiyo Maru in Read More
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WG-FSA-96/20 More Info |
Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach Rodhouse, P.G.
Abstract:
In anticipation of the development of a new fishery for the oceanic squid Martialia hyadesi in the Scotia Sea a revision is presented of annual consumption of the species by higher predators and a brief review is provided of information about the life cycle and distribution obtained from research fishing and commercial catches. The species is consumed by seabirds, seals and whales and the most Read More
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WG-FSA-96/21 More Info |
Research fishery for the squid Martialia hyadesi at South Georgia conducted by the Korean registered vessel Ihn Sung 101 (June 1996): scientific observer’s report Rodhouse, P.G., González, A.F. |
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WG-FSA-96/22 More Info |
Report on scientific observations onboard the Chilean longliner, ‘Puerto Ballena’, in Statistical Subarea 48.3 from March to May 1996 Selling, J., Kock, K.-H.
Abstract:
Scientific observation under the auspices of the CCAMLR Scheme of International Scientific Observatio was conducted onboard the Chilean longliner 'Puerto Ballena' fishing for Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 from March to May 1996. Details of the cruise are provided. Biological investigations incorporated length, sex, maturity and weight measurements of D. Read More
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WG-FSA-96/23 More Info |
Suggestions to modify the CCAMLR scientific observer cruise log Selling, J., Kock, K.-H. |
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WG-FSA-96/24 More Info |
The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin Everson, I., Kock, K.-H.
Abstract:
The mackerel icefish (Champsocephalus gunnari) is a prominent member of the coastal fish fauna of the Seasonal Pack-ice Zone and the islands north of it. Separated into a number of stocks, its distribution ranges from the Scotia Arc region, namely South Georgia, in the Atlantic Ocean sector to the Kerguelen-Heard Plateau in the Indian Ocean sector. Mackerel icefish have been heavily exploited Read More
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WG-FSA-96/25 More Info |
Scientific observer database Secretariat |
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WG-FSA-96/26 More Info |
Observer IMALF data analysis Secretariat |
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WG-FSA-96/27 More Info |
Results of E.L. Holmberg 1996 fish survey in Subarea 48.3 Marschoff, E., Shandikov, G., Reta, R., Madirolas, A., Calcagno, J., López, F., Gonzalez, B. |
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WG-FSA-96/28 Rev. 1 More Info |
Diet composition and observations on reproduction of Champsocephalus gunnari in Subarea 48.3 in March/April 1996, Dr Eduardo Holmberg survey Marschoff, E., Barrera-Oro, E., Casaux, R.
Abstract:
The diet composition of the icefish Champsocephalus gumari caught in the Subarea 48.3 in March/April 1996 was analyzed using Frequency of occurrence (F%) and coefficient "Q" (%) methods. Krill was by far the main food around South Georgia and Shag Rocks (F= 85%, Q= 99%). Other prey items, known as an important alternative food in years of krill scarcity, were ingested only occasionally ( Read More
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WG-FSA-96/29 More Info |
Diet composition of Dissostichus eleginoides in Subarea 48.3, Dr Eduardo Holmberg survey March/April 1996 Barrera-Oro, E., Marschoff, E., Casaux, R.
Abstract:
A diet analysis of the patagonian toothfish Diissostichus eleginoides in the Subarea 48.3 in March/April 1996 was carried out by frequency of occurrence (F%) and coefficient "Q" (%) methods. The samples consisted chiefly of immature specimens, with predominant length ranges of 30-70 cm (TL). Fish was by far the main food at SR and SG (63 % as sole prey). Krill appeared as secondary food, Read More
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WG-FSA-96/3 Rev. 1 More Info |
List of documents |
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WG-FSA-96/30 More Info |
Spatial distribution of Champsocephalus gunnari in Subarea 48.3. Some implications for parameter estimation Calcagno, J., Gonzalez, B., Marschoff, E.
Abstract:
Results of the analysis of three consecutive cruises to subarea 48.3 are analyzed. A significant variance component associated with the formation of clusters of stations was found as well as a general trend for increasing densities since 1994. The significant variance component obtained for clusters formed with stations at 8.0 nautical miles implies that considering all stations as independent Read More
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WG-FSA-96/31 More Info |
Incidental mortality of seabirds associated with longline fishing in Subarea 48.3 – preliminary results of scientific observations onboard the Chilean longliner, Puerto Ballena, from March to May 1996 Selling, J., Kock, K.-H.
Abstract:
Estimates of the number of seabirds taken incidentally in longline fisheries on Patagonian toothfish (Dissostichus eleginoides) are still based on limited information. We report here on observations on the by-catch of seabirds during a cruise of the Chilean longliner 'Puerto Ballena' in Statistical Subarea 48.3. A total of 118 dead black-browed albatrosses, 3 dead grey-headed albatrosses, 46 Read More
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WG-FSA-96/32 More Info |
Intersessional work on the incidental mortality of seabirds in longline fisheries Secretariat |
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WG-FSA-96/33 More Info |
Prevalences of parasitized and hyperparasitized crabs near South Georgia: summary of a manuscript submitted to the ‘Journal of Animal Ecology’ Watters, G. |
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WG-FSA-96/34 More Info |
Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons Watters, G.
Abstract:
Data collected from the FN American Champion during Phases 1 and 2 of the experimental crab fishery were analyzed with generalized additive models and depletion estimators. Results from the generalized additive models show that the density of fishable P. spinosissima is highest off the northern coast of South Georgia and at depths between about 100 and 300 fathoms. The Phase 1 results suggest Read More
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WG-FSA-96/35 More Info |
Estimation of size at maturity and calculation of an appropriate size limit for male Paralomis formosa Watters, G.
Abstract:
A number of weighted smoothing splines were fit to data on carapace length and size-specific, median chela height of Paralomis formosa. The second derivative of the spline which made the best tradeoff between goodness of fit and smoothness was used as an estimate morphometric size at maturity. Bootstrapping techniques provided a bias-corrected estimate of morphometric size at maturity (sBc) Read More
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WG-FSA-96/36 More Info |
By-catch of fish during a 1995/96 deep-sea longline experimental fishing cruise off the Kerguelen Islands (Division 58.5.1) Pruvost, P., Duhamel, G.
Abstract:
An experimental longline fishing cruise targetting D. eleginoides has been realised in the deep-sea zone (300 - 1700 m) off the Kerguelen islands (Division 58-5-1) from February to April 1996. The by-catch has been identified with 10 species of fish reaching a important part (36,1%) of the total catch in number. The grenadier Macrourus carinatus and two species of skates Bathyraja eatonii and Read More
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WG-FSA-96/37 More Info |
Data availability for WG-FSA/96 Secretariat |
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WG-FSA-96/37 Addendum More Info |
Data availability for WG-FSA-96 Secretariat |
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WG-FSA-96/38 More Info |
Estimates of absolute recruitment for Patagonian toothfish (D. eleginoides) around Heard Island de la Mare, W.
Abstract:
Estimates of absolute numbers of recruits to the stock of patagonian toothfish around the Heard Island region are calculated from density at length data derived from stratified trawl surveys. The estimates are referred to the four year-old age class. The parameters for a lognormal recruitment distribution suitable for use in a population model are calculated.
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WG-FSA-96/39 More Info |
Abundance of Patagonian toothfish (D. eleginoides) at Macquarie Island estimated from tagging studies during 1995/96 fishing season de la Mare, W., Williams, R.
Abstract:
This note describes a successful method for tagging Dissostichus eleginoides and presents an analysis of a tag-recapture experiment carried during the Macquarie Island fishery for this species during the 1995-96 season. Simple population and tag accumulation models are used to account for the tags being released at various times throughout the season, and the effects of the removals by fishing Read More
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WG-FSA-96/40 More Info |
Extract from Russian observer’s report on Korean vessel, Ihn Sung 66 Kozlov, A.N. |
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WG-FSA-96/41 More Info |
Interim report of activities of the WG-FSA Correspondence Group on Fish By-catch in Krill Fisheries Secretariat |
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WG-FSA-96/42 More Info |
Comparison between age readings from scales and otoliths of the toothfish (D. eleginoides) from South Georgia Cassia, M.C. |
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WG-FSA-96/43 More Info |
Comparative feeding ecology of Dissostichus eleginoides in Argentine continental shelf and South Georgia (Statistical Subarea 48.3) García de la Rosa, S.B., Figueroa, D., Sánchez, F. |
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WG-FSA-96/44 More Info |
Sexual ratio of Dissostichus eleginoides from longlines samples: a partial indicator of reproductive migration in Subarea 48.3 Moreno, C.A., Guerra, J., Zuleta, A.
Abstract:
The examination of the sexual ratio of D. eleginoides between the first week of March and the third week of July 1996, in the subarea 48.3 shows that the sex ratio departs from the expected 1:l ratio being the females more abundant in the longline samples, except during May, when the males at size of first maturity join the female population. After the first week of June, the sex ratio turns Read More
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WG-FSA-96/45 More Info |
Vacant |
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WG-FSA-96/46 More Info |
Refinements to the General Yield Model for use at WG FSA 96 Constable, A.J. |
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WG-FSA-96/47 More Info |
Short report on trip 9604, American Champion, Aug/Sep 1996 Delegation of South Africa |
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WG-FSA-96/48 More Info |
Dependence of catches of D. eleginoides on environment factors inside Statistical Area 58.5.1 (Kerguelen Island) – (Conservation Measure 29/XIV) Petrenko, A.S. |
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WG-FSA-96/49 More Info |
Report on operation of the Ukrainian fleet inside the Division 58.5.1 (Kerguelen Island) during the period 1991–1996 Krakatitsa, V.V., Goubanov, E.P., Petrenko, A.S. |
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WG-FSA-96/50 More Info |
Report on estimates and avoiding side mortality of marine resources of Antarctic region inside the Division 58.5.1 (Kerguelen Island) – (Conservation Measure 29/XIV) Petrenko, A.S., Goubanov, E.P. |
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WG-FSA-96/51 Rev. 1 More Info |
Observer logbooks (trawl fisheries) Secretariat |
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WG-FSA-96/52 More Info |
Extract from report on scientific observation during Patagonian toothfish, Dissostichus eleginoides, fishery on board SRTM ‘Itkul’ in Subarea 48.3 in the period of 17 March to 17 July 1996 Zaitsev, A.K. |
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WG-FSA-96/53 More Info |
A method to estimate fish growth parameters using hard structure without back calculation Hernández, D.R., Aubone, A. |
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WG-FSA-96/54 More Info |
A shore-based randomised sampling design used in the artisanal longline fishery for Dissostichus eleginoides off central Chile Rubilar, P., Ashford, J., Jones, C.
Abstract:
A shore-based design used to sample sports fisheries was adapted to sample otoliths from targetted individuals caught in the artisanal longline fishery for Dissostichus eleginoides off northern Chile. Observers were stationed dockside and at a processing factory. A 14-day sampling frame was used, divided into primary sampling units of days/area and secondary sampling units of three- and eight- Read More
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WG-FSA-96/55 More Info |
Determination of stock structure and movement-at-age in Patagonian toothfish (Dissostichus eleginoides) through laser-based analysis of otoliths – a report on progress Everson, I., Ashford, J., Jones, C. |
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WG-FSA-96/56 More Info |
A randomised sampling design used in the longline fishery for Dissostichus eleginoides in the Southern Indian Ocean Duhamel, G., Ashford, J.
Abstract:
A randomised cluster design was used successfully to sample otoliths from targetted individuals taken by individual longlines in the fishery for Dissostichus eleginoides. The line was divided into constituent baskets of line; we used the line as the sampling frame, and baskets as the primary sampling units. The design allows representative samples to be taken while a line is being hauled; it Read More
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WG-FSA-96/57 More Info |
Loss of hooks during longline fishing in Subarea 48.3 Jones, J., Parkes, G. |
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WG-FSA-96/58 More Info |
Data on juvenile fish surveys within South Georgia Frolkina, Z.A.
Abstract:
Data on 6 juvenile fish surveys within South Georgia Subarea have been analysed in the paper. There has been revealed that the most abundant species in the catches by juvenile fish trawl were Champsocephalus gunnari and Lepidonotothen larseni and those the most varions were the representatives or Nototheniidse family (10 species), Myctophidae family (7 species) and Bathydraconidae family (5 Read More
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WG-FSA-96/59 More Info |
Experimental acoustic estimation of bathypelagic fishes biomasses from the South Georgia and Shag Rock shelf areas with trawl sampling (RV Atlantida, February 1996) Sunkovich, V. Yu., Frolkina, G.A., Severin, V.A., Abramov, A.M., Yorobyov, V.M., Polischuk, M.I., Bukatin, P.A., Shnar, V.N.
Abstract:
Experimental acoustic survey in shelf areas off South Georgia and Shag Rocks in CCAMLR Subarea 48.3 aimed at demersal fishes abundance and distribution assessment is described. Data on trawl stations location, catch length compostion, per cent proportion of various fish species in trawls samples, data of biological and oceanologica3 researches are presented. The data on target strengths Read More
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WG-FSA-96/60 More Info |
Distribution of young icefishes in the South Georgia shelf area on the basis of juvenile surveys data Trunov, I.A., Frolkina, Zh. A.
Abstract:
The results obtained during juvenile surveys in Subarea 48.3 are presented. In the period from 1984 to 1990 AtlantNIRO carried out 6 surveys of that type. 40 fish species from 15 families were found in the juvenile trawl catches. Data are given on young icefishes distribution, length composition, vertical diurnal migrations and young Champsocephalus gunnari by-catches in krill fishery.
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WG-FSA-96/61 Rev. 1 More Info |
Report of the first meeting of the CCSBT’s Ecologically Related Species Working Group
Wellington, New Zealand, 18 to 20 December 1995 |
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WG-FSA-96/62 More Info |
Recent information related to seabird by-catch on the high seas Betlehem, A., Polacheck, T. |
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WG-FSA-96/63 More Info |
Some observations on seabird by-catch from Australian longline fishing vessels Whitelaw, W. |
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WG-FSA-96/64 More Info |
Summary tables of available information on seabird by catch by Australian tuna longline vessels Polacheck, T. |
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WG-FSA-96/65 More Info |
Trends in tuna longline fisheries in the southern oceans and implications for seabird by-catch Polacheck, T., Tuck, G. |
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WG-FSA-96/66 More Info |
By-catch of albatrosses and other seabirds by Japanese longline fishing vessels in the Australian fishing zone from April 1992 to March 1995 Klaer, N., Polacheck, T. |
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