Resultados de la búsqueda

1. 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 : Autor(es): Ichii, T.

2. 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 : Autor(es): de la Mare, W.K., R. Williams and A.J. Constable

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

   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 ... sustainable yield, made adjusting mean recruitment in GYM so that BV2005 corresponded to the current estimates ...

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

4. 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 : Autor(es): J.M. Fenaughty and K. Large

5. 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 : Autor(es): D.J. Agnew (UK)

6. 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 ... 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 ... 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 ...

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

7. 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 : Autor(es): Secretariat

8. Distribution and abundance of Antarctic krill (Euphausia superba) off East Antarctic (30–80°E) in January–March 2006

   -2. B0 was estimated to be 12.46 million tonnes with a CV of 15.15%. Krill were widely distributed at ... survey and analysis methods for krill. Author(s):  T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S ...

   Meeting Document : WG-EMM-07/33 : Autor(es): T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S. Nicol (Australia)

9. Pairwise tag performance: testing the sensitivity of the tag detection index and the mortality of tagged fish index

   . This recommendation is in accordance with that of most of the participants at WG-SAM 2013 (paragraph ... temporal variability of fishing operations by pairing each individual tag release or recapture event with ... and in the same fishing season). The method showed that when the confounding effects of variable ... with respect to the tag detection index in the Ross Sea region. Here we present the results of ...

   Meeting Document : WG-FSA-13/50 : Autor(es): S. Mormede (New Zealand)

10. A bioenergetics model assessment of the prey consumption of macaroni penguins in Subarea 48.3

    Subarea 48.3 during the period when penguins are constrained by breeding. We show that the greatest levels ... of consumption occur during incubation and pre-moult, but that there are also evident increases ... towards the end of guard and the end of crèche. Our initial results indicate that levels of krill ... consumption are comparable with some previously reported estimates, but with some important differences. This ...

    Meeting Document : WG-EMM-16/37 : Autor(es): P.N. Trathan, L. Emmerson, C. Southwell and C. Waluda

Páginas