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1. Influence of data quality and quantity from a multiyear tagging program on an integrated fish stock assessment

   -overlap), numbers of tagged fish, duration of the tagging program, using catch-at-length or catch-at-age ... , fishing, and data collection, this study investigated how the bias and precision of biomass estimates from ... an integrated tag-based assessment are influenced by various aspects of a multiyear tagging program ... , particularly the effects of the size of tagged fish compared with the size of fish in the catch (tag size ...

   Meeting Document : WG-FSA-13/P03 : Autor(es): P. Ziegler

2. Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate

   Abstract:  The age distribution of breeding female Antarctic fur seals at Bird Island, South ... Georgia, in 1988 was compared with the age distribution of a sample obtained in 1971-1973. The mean age in ... age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ... ), which was significantly lower than in 1971-1973. Indicators of population size suggested that population ...

   Meeting Document : WG-CEMP-91/21 : Autor(es): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)

3. Age validation of Patagonian toothfish (Dissostichus eleginoides) from Heard and Macquarie Islands

   number of observed increments after the mark in relation to the time-at-liberty between tagging and ... number of increments was the same as the observed increments for 88% of cases (when the time-at-liberty ... was known at the time of reading and 52% when the time-at-liberty was not known These results indicate ... counting presumed growth increments on the sectioned face of sagittal otoliths. While there is a general ...

   Meeting Document : WG-FSA-05/60 : Autor(es): K. Krusic-Golub and R. Williams (Australia)

4. Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea

   minimally realistic ecosystem model to examine how projected effects of ocean warming on the growth of ... Antarctic krill, Euphausia superba, might affect populations of krill and dependent predators (whales ... for predators by curtailing krill fishing at different points in the 21st century. The projected ... effects of ocean warming on krill biomass were strongest in the northern Scotia Sea, with a ≥ 40% decline ...

   Meeting Document : WG-EMM-18/P02 : Autor(es): E.S. Klein, S.L. Hill, J.T. Hinke, T. Phillips and G.M. Watters

5. Do the males of Dissostichus eleginoides grow faster, or only mature before females?

   maturity at age and not due to the growth rate. Based on this sample of 434 females and 398 males, it is ... Helena and Cisne Verde during August of 1997-and utilized by the WG-FSA-97 to build the maturity ogives ... concluded that the males mature for the first time at 4 years age and females at 10 years age, reaching 100 ... % maturity at 12 years age the males and 21 years age the females. Author(s):  C.A. Moreno (Chile) Title:  Do ...

   Meeting Document : WG-FSA-98/16 Rev. 1 : Autor(es): C.A. Moreno (Chile)

6. Abundance and trends in the breeding population of Adélie penguins (Pygoscelis adeliae) in the western Ross Sea

   in the number of Adélie penguin breeding pairs at colonies in the western Ross Sea.  High angle ... , 2001-2010.  In contrast, a single declining trend line best represented the number of breeding pairs at ... of change versus loge-transformed colony size all showed a significant negative correlation at lag 1 ... Ecosystem Monitoring Program (CEMP) to detect effects of anthropogenic activities (e.g. commercial fishing ...

   Meeting Document : WG-EMM-13/30 : Autor(es): P. O’B. Lyver, M. Barron, K.J. Barton, S. Gordon (New Zealand), D. Ainley, A. Pollard (USA), P.R. Wilson and M.H. Pinkerton (New Zealand)

7. Persistent organic pollutants in stomach contents of Adélie penguins from Edmonson Point (Victoria Land, Antarctica)

   Abstract:  Stomach contents (n=43) of Ade lie penguin (Pygoscelis adeliae) nesting at Edmonson ... revealed concentrations of polychlorinated biphenyls (PCBs), including coplanar congeners, at 1.01 ng/g wet ... wt, pp'DDE at 5.80 ng/g wet wt and and hexachlorobenzene (HCB) at 4.70 ng/g wet wt. Average ... input of these persistent organic pollutants (POPs) through diet also was evaluated. The following ...

   Meeting Document : WG-EMM-03/58 : Autor(es): S. Corsolini, S. Olmastroni, N. Ademollo, G. Minucci and S. Focardi (Italy)

8. Results of E.L. Holmberg 1995 fish survey in Subarea 48.3

   comparison between both cruises. Of these, 20 hauls were located at less than 0.5 miles and 11 between 0.5 ... density of several species, particularly Champsocephalus gunnari at the shelf of the South Georgia Islands ... of the younger fraction (below 4 years: 99.3% at the South Georgia Islands and 93.4 % at Shag Rocks ... Abstract:  The survey comprised 48 bottom trawl hauls taken in subarea 48.3. About 80% of the ...

   Meeting Document : WG-FSA-95/35 : Autor(es): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.

9. Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia: an indicator of long-term growth history

   died of natural causes at Bird Island. South Georgia, was quantified from measurements of annual layers ... in longitudinal sections of teeth. Mean age at death was 7∙69 ± 0∙07 years and this showed a small ... ) and increased with age at death. Changes in the growth pattern of teeth suggested that fur seals which ... Abstract:  Growth of upper canine teeth of male Antarctic fur seals (Arctocephalus gazella) which ...

   Meeting Document : WG-CEMP-93/11 : Autor(es): I.L. Boyd and J.P. Roberts (United Kingdom)

10. Changes in the foraging range of Adélie penguins as the breeding season progresses

    season of Adélie penguins nesting at Béchervaise Island on the Mawson coast of Eastern Antarctica. A ... their breeding sites. 4. Foraging ranges at the different stages of the breeding season are consistent ... decade’s worth of satellite tracking data was loaded into geographical information systems (GIS) software ... to produce maps of where the penguins travel to feed during each of the incubation, guard, crèche and ...

    Meeting Document : WG-EMM-04/57 : Autor(es): J. Clarke and L. Emmerson (Australia)

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