Search results
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Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)
annually in otoliths of juvenile D. mawsoni. Mean fish lengths at ages 0.5, 1.5, 2.5 and 3.5 years were ... curves calculated previously from a sample of data that was large but lacked any fish younger than 3.5 ... been injected with oxytetracycline some years before recapture. The six recaptured fish were all large ... . Mean fish lengths at ages 0.5, 1.5, 2.5 and 3.5 years were estimated to be 14, 28, 37 and 46 cm total ... made. Tagged Fish Samples Specimens of D. mawsoni captured on hooks attached to a vertical 2.3 mm ... 5) estimated previously by Horn (2002). Tagged Fish Samples Details of the six tagged recaptured fi sh ... (mm) Otolith Number Fish Length (TL, cm) Estimated Age (years) R1 R2 R3 R1 R2 R3 Otolith ... and recaptured fish used in this analysis. ‘–’ denotes unavailable data. Date of Time at Liberty (years ...
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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Scientific Committee representatives
] vacchi [at] ias [dot] cnr [dot] it Japan Dr Takehiro Okuda Head of Oceanic Resources Group 2-12-4, Fuku ...
Page : Site Section: Science
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Notes on the availability of three important finfish species in offshore waters of the lower South Shetland Islands (Subarea 48.1)
Abstract: In 1998, an offshore scientific trawl survey of bottom fish sampling within the 50-500 ... , the abundance of two commercially important Antarctic fish, Notothenia rossii and Gobionotothen gibberifrons has ... been monitored relative to another potentially exploitable fish, Notothenia coriiceps, in the lower ... In 1998, an offshore scientific trawl survey of bottom fish sampling within the 50-500 m isobath ...
Meeting Document : WG-FSA-99/31 : Author(s): C.D. Jones (USA), E.R. Barrera-Oro, E.R. Marschoff and R.J. Casaux (Argentina)
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CONDITIONING SMOM USING THE AGREED CALENDAR OF OBSERVED CHANGES IN PREDATOR AND KRILL ABUNDANCE: A FURTHER STEP IN THE DEVELOPMENT OF A MANAGEMENT PROCEDURE FOR KRILL FISHERIES IN AREA 48
data on fish catches, the model estimates the starting (1970) fish abundance level, with results ... suggesting that fish populations in several of the SSMUs are much reduced compared to their 1970 levels ... than other predators to decreasing levels of krill abundance. Given data on fish catches, the model ... estimates the starting (1970) fish abundance level, with results suggesting that fish populations in several ...
Meeting Document : WG-EMM-08/44 : Author(s): É.E. Plagányi and D.S. Butterworth (South Africa)
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Pleuragramma antarcticum distribution in the Ross Sea during late austral summer 2013
, there is still much unknown about larval fish distribution in the Ross Sea, Antarctica. During a United States ... made up more than 99% of the icthyoplankton in the western Ross Sea. Most of these fish had hatched ... during the current season. Length data from these fish obtained over the course of the cruise supports ... , there is still much unknown about larval fish distribution in the Ross Sea, Antarctica. During a United States ...
Meeting Document : WG-EMM-14/38 : Author(s): C. Brooks and K. Goetz (USA)
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Proposal of extension of research block 48.6_2 to complete planned research and examine the habitat model and the stock structure
in its southeastern bank (south of ca. 55.2°S) with higher fish densities but scarce in the northern area ... with lower fish densities, and it has not taken approximately 50-70% of the annual catch limit (CL=170 tonnes ... along the extended ridges. Moreover, the fishes tagged and released tended to move along the ridges ... southeastern bank (south of ca. 55.2°S) with higher fish densities but scarce in the northern area ...
Meeting Document : WG-SAM-16/08 : Author(s): T. Namba, T. Ichii and K. Taki
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Behaviour of Dissostichus eleginoides fitted with archival tags at Heard Island: preliminary results
data they recorded is analysed here. Most of the fish had periods of active vertical movement ... movement was influenced by the bottom topography, with fish on the relatively shallow plateau ... they recorded is analysed here. Most of the fish had periods of active vertical movement alternating ... was influenced by the bottom topography, with fish on the relatively shallow plateau or in the bottom of a valley ...
Meeting Document : WG-FSA-02/60 : Author(s): R. Williams and T. Lamb (Australia)
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 and 88.2 up to 2005/06
% of the recaptures could not be matched to a release observation, mainly because of missing release data. Two fish ... toothfish have moved less than 50 km. Sub adult fish (80–100 cm) have tended to move further than adults ... being tagged so that for the first time the size distribution of the tagged fish in the Ross Sea ... not be matched to a release observation, mainly because of missing release data. Two fish tagged and recaptured ...
Meeting Document : WG-FSA-06/34 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)
. The age of fish was estimated by counting annuli on transverse sections obtained by grinding and polishing ... and a considerable short life span. The fish population of C. wilsoni caught in the studied area consisted mainly ... of adult specimens between 1 and 3 years of age, with very few older fish. Author(s): M. La Mesa, A. De ... . The age of fish was estimated by counting annuli on transverse sections obtained by grinding and polishing ...
Meeting Document : WG-FSA-08/33 : Author(s): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)
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Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update
program, in particular the effects of the size (tag size-overlap) and numbers of tagged fish, the duration ... size-overlap is imperative to maximise the likelihood of a robust assessment. Tagging fish with a low ... ’ in the data by strongly reducing the fish biomass is not needed for tag-based assessments, since data obtained ... , in particular the effects of the size (tag size-overlap) and numbers of tagged fish, the duration of the tagging ...
Meeting Document : WG-FSA-12/18 : Author(s): P.E. Ziegler (Australia)