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1. Fishery Report: Champsocephalus gunnari South Georgia (Subarea 48.3)

   dominated by two size classes, estimated to be at ages 2+ and 3+, with greater numbers of 2+ fish caught ... suitable for determining catch limits (Annex 4, paragraph 3.36), but recommended that the code be ... been taken, but it was included because there remained the potential that it could be caught before ... marine mammals were observed. It should be noted that not all the catch has been taken this season ...

   Document : Site Section: Publications

2. THE POWER OF ECOSYSTEM MONITORING

   power) to detect effects that trigger management action. 2. Using data from a long-term ecosystem ... monitoring programme of the predators of Antarctic krill Euphausia superba at South Georgia together with a ... % power after 20 years with the probability of a type I error (α) = 0.05). The power increased to >50 ... % when α was increased to 0.2 when the ability to detect change was greater with the predator response ...

   Meeting Document : WG-EMM-08/P11 : Auteur(s): K. Reid, J.P. Croxall and E.J. Murphy

3. Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach

   ommastrephids, is semelparous. It is proposed that the timing and catches of the fishery should be highly ... reliable data are from seabirds because comprehensive sampling can be carried out during the breeding ... 245,000 tonnes compared with an upper estimate of 550,000 tonnes if less reliable data are included. M ... . hyadesi spawns in winter/spring, probably has a two year life cycle and, in common with other ...

   Meeting Document : WG-FSA-96/20 : Auteur(s): Rodhouse, P.G.

4. Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season

   of fished swarms ranged from 100 m to 10 km with different distributions occurring in different ... fishing areas. While catch per towing time reflects within-swarm density, catch per day was thought to be ... space may prove difficult due to problems of standardization when data from different vessels are to be ... grading has come to be adapted following that used for shrimps. White are more valuable than pink. 2.2 ... krill of Wilkes Land is better than that in the Scotia Sea (Table 2). For 'example, catches may be ... composition - 345 - seems to be a possible means of detecting yearly changes in krill biomass in that ... paired samples from 30 sets of measurements, it was concluded that krill were well mixed in the net and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Auteur(s): Ichii, T.

5. An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island

   sizes of maturity and a weight-length relationship. The results show that characteristics of C. gunnari ... populations on the Heard Plateau are sufficiently different from those on Shell Bank for them to be managed ... separately. Precautionary catch limits calculated using the Generalised Yield Model (GYM) are found to be 180 ... , with a range of about two orders of magnitude. At South Georgia and Kerguelen it has been found that ... and recruitment estimates show that the same behaviour can be expected in the populations around ... in September 1993 and August 1997. Fish at stage 2 (developing) or later were considered to be ... these figures with the growth curve shows that the age at first spawning is three years. WEIGHT ...

   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

6. Results of the mark–recapture experiment in Subarea 48.3, 2005

   sustainable yield, made adjusting mean recruitment in GYM so that BV2005 corresponded to the current estimates ... from 2004 and 2005 were very similar to each other, whichever selectivity was used: about 62,000 t of ... vulnerable biomass using the Kirkwood shallow selectivity; 52-55,000 t using the CASAL derived selectivity ... functions; and 41,000 t using the tag-derived selectivity function. Current vulnerable biomass (BV2005) was ...

   Meeting Document : WG-FSA-05/17 : Auteur(s): D.J. Agnew and A. Payne (United Kingdom)

7. Fishing for structure; can we describe normal patterns in toothfish fishing operations using catch and effort data?

   they may vary among gear type and other factors that make them useful to understand fishing activities ... some variables; some are explainable while others are obvious errors. We suggest that identifying ... values outside normal maximum ranges can be used to target additional error-checking or seek additional ... more difficult to evaluate given the wide range of influences that may affect recorded values for a ...

   Meeting Document : WG-FSA-16/36 : Auteur(s): J.M. Fenaughty and K. Large

8. ANALYSIS OF ROSS SEA TAGGING AND RECAPTURE RATES

   the same. 3. This method could be used to identify groups of nations that have similar reporting rates ... , recapture year, SSRU, release nation and recapture nation, with 193 recaptures. Despite this size, fishing ... has not been consistent enough between nations to allow the analysis to be definitive. In many cases ... existed, recapture rates were usually highest with New Zealand tagged and recaptured fish, although there ...

   Meeting Document : WG-SAM-08/07 : Auteur(s): D.J. Agnew (UK)

9. Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of Antarctica

   et al., 2005; Piyanova et al., 2008; Petrov and Istomin, 2008), who proposed that D. mawsoni can be ... conclu- sions about genetic isolation of toothfish in the Ross Sea should be considered with caution ... reasonable to assume that the population structure should be temporally stable and not fluctuate from one ... th e lo ci st ud ie d (n um be rs in th e to p ro w re fe r t o sa m pl in g ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 1–9 : Auteur(s): Mugue, N.S., A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev

10. CCAMLR tagging program: tag link status update

    with tag numbers but had inconsistent ancillary data. For those tags that did not provide exact or ... exact match with inconsistent ancillary data; and less than 2% could not be successfully linked. An ... returned; 50% provide an exact match with tag numbers held in the database, 22 % provide an exact match ... unique matches only 109 (8%) could not be successfully linked using additional information. For the ...

    Meeting Document : WG-SAM-12/22 : Auteur(s): Secretariat

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