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1. Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

   not tested, so that present ageing data haveto be considered with caution. The estimated age range was ... males. Age-at-sexual maturity was estimated to be about 2 years for females and 2.5 years for males ... consisted mainly of adult individuals between 1 and 3 years of age, with very few older fish.   File ... increment analysis or daily increment counts, so that present ageing data should be considered with some ... to be in line with other icefish in that they grow fast while juvenile (Gubsch, 1982; Chojnacki and ... to be considered with caution. The estimated age range was 1–5 years for males and 1–4 years for ... ). Abundance of C. wilsoni, however, varied remarkably with large interannual variation. It is likely that ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Autor(es): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock

2. By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)

   that, in the future, more hauls should be sampled for by-catch. The proportion of hauls containing fish ... . Unfortunately, Armstrong's fish by-catch data were not presented in a standardised manner. This paper ... fishing in the Atlantic sector of the Southern Ocean. This difference may be related to differences in the ... amount of krill that was subsampled for making observations on fish by-catch. The by-catch data from the ... , these observers showed that fish were are captured with midwater trawl gear, and presen t i n t he ... ). With small subsamples of krill, it is likely that by-catch will not be observed from hauls which ... per tonne of krill appeared to be low. CCAMLR h a s rece ived f o u r r epo r t s CCAMLR has ... ) provided efficient estimators for means and variances of data that come from a mixture distribution with ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Autor(es): Watters, G

3. The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)

   analyses suggest that the current precautionary catch limit may not be sustainable in the long term if it ... further research should be directed in order to provide information on which to base the most appropriate ... poorly understood with great uncertainty surrounding their trophic ecology and life histories. Recent ... were reached consistently. Further research to address many of the areas outlined above should be ... analyses suggest that the current precautionary catch limit may not be sustainable in the long term if it ... et al., 2002) indicates that distribution and abundance may be related to variability in substrate ... , examination of images from the autonomous camera system suggests that this species may grow much larger with ... is s pi no si ss im a fo r th e re la tio ns hi p be tw ee n lo g w ei gh t a nd ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Autor(es): Belchier, M., T. Peatman and J. Brown

4. Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia

   utilizing tetracycline-marked teeth confirmed that the feeding trip/suckling cycles of females are reflected ... ) the number of feeding trips made by an individual’'s mother during lactation. This analysis ... showed that between 1962 and 1981 the mean number of feeding trips made by female fur seals varied ... number of feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year ... tetracycline-marked teeth confirmed that the feeding trip/suckling cycles of females are reflected as ... number of feeding trips made by an individual's mother during lactation. This analysis showed that ... feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year period ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Autor(es): Bengtson, J.L.

5. Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)

   estimated to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively ... density was distinctly polymodal, to see whether ages estimated by reading otoliths were congruent with ... the length modes observed. Length densities by age were compared graphically with the overall length ... density observed. Additionally, ages were predicted for each fish based on length, and compared with ages ... on length, and compared with ages estimated from reading otoliths in a goodness-of-fi t test. The ... majority of the otoliths (83.6%) were estimated to be from fi sh 1+ or 2+ years old, with mean total ... ., 2001) that, over the lifespan of the fi sh, age estimates derived from scale readings are lower than ... otolith structure were as described in Ashford (2001), with the edge of the nucleus and the fi rst ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Autor(es): Ashford, J., C. Jones, S. Bobko and I. Everson

6. Fatty acid and stable isotope analyses to infer diet of Antarctic toothfish caught in the southern Ross Sea

   evidence that a combination of these two techniques can delineate the main prey items of Antarctic ... were higher than those of P. antarcticum, P. barsukovi and T. loennbergii, indicating a higher trophic ... . hunteri) suggested that they occupy the same trophic position. Overall results of this survey are ... consistent with the frequency and percentage occurrence of prey in Antarctic toothfish stomachs. Further ... main FAs between toothfish of all sizes and T. loenbergii, supporting the idea that this is one of ... (Nematocarcinus). It is not surprising that T. loennbergii is one of the main prey species of Antarctic ... stable isotope analyses from this study provide evidence that a combination of these two techniques can ... . barsukovi and T. loennbergii, indicating a higher trophic position of the toothfish. In contrast, similar ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 21–36 : Autor(es): Jo, H.-S., I. Yeon, C. Lim, S.M. Hanchet, D.-W. Lee and C.-K. Kang

7. Spawning locations of mackerel icefish at South Georgia

   data from commercial fisheries and research surveys. It is concluded that there is strong evidence of ... be at a very much lower intensity than inshore. There is some evidence of spawning at Shag Rocks ... adjacent coastal waters and their density declines exponentially offshore. All this evidence indicates that ... indicates that the most important spawning locations are within the bays. ~ t u d e d'informations ... aggregations should be between 1 March and 31 May. Arising from this, WG-FSA recommended that further ... 90-200 m, with all deptl-t ranges sampled in all months. Results from demersal fish surveys have ... fish sampled at these times appeared to be close to spawning. We conclude from these results that ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Autor(es): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock

8. Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)

   estimates agree with growth curves calculated previously from a sample of data that was large but lacked any ... D. mawsoni that had been injected with oxytetracycline some years before recapture. The six ... the Ross Sea (CCAMLR Subarea 88.1) have been aged assuming that one translucent zone is formed ... in each consecutive mode. This indicates that the modes represented year classes and that one ... addition, sagittal otoliths were examined from D. mawsoni that had been injected with oxytetracycline some ... length (TL) are seldom caught (Hanchet et al., 2001). Horn (2002) concluded that multiple banding was ... -frequency data (with associated otoliths) exhibiting distinct juvenile modes (Jones et al., 2001), and a ... set of otoliths from recaptured D. mawsoni that had previously been injected with oxytetracycline ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 125–138 : Autor(es): Horn, P.L., C.P. Sutton and A.L. DeVries

9. Validation of sink rates of longlines measured using two different methods

   / Description:  Sink rates of integrated weight longlines (lines with 50 g.m –1 lead integrated into two strands ... plastic bottles (bottle method). Sink rates measured to 2 m with bottles averaged 0.23 ± 0.07 m.s –1 ... compared to 0.17 ± 0.03 m.s –1 recorded by TDRs. This difference was not statistically significant (t 12 ... ± 0.02 m.s –1) were significantly slower than those measured by TDRs (0.24 ± 0.03 m.s –1, t 10 = –3.851 ... ed as a critical variable that could be controlled and measured. Faster sinking lines reduce the ... with the sensors pointing to the far side of the eye-splice (Figure 1). This ensured that the sensors ... deployment. For that purpose all TDRs were put into a bucket fi lled with seawater at ambient seawater ... the cord. The end of the string was loosely attached to the bottle with a piece of sticky tape that ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 179–187 : Autor(es): Wienecke, B. and G. Robertson

10. Assessments of by-catch in trawl fisheries at Heard and McDonald Islands

    proportion of the total catch when large catches of target species were taken, indicating that CCAMLR's ... 1996 by-catch rules need revising in order that prospecting may be undertaken. Thus, to enable ... ensure that the status of these commercial species is not affected by these commercial fisheries. The ... needed, they enable a preliminary examination of the potential for the fishery to be exceeding long-term ... taken, indicating that CCAMLR's 1996 by-catch rules need revising in order that prospecting may be ... -harvesting and/or non-commercial species that coincide in their distribution with currently targeted ... -catches of these species. The first relates to restricting the types of fishing that may be carried out ... the potential yield that could be tolerated by the by-catch species. As a result, the situation ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Autor(es): Constable, A.J., R. Williams and W.K. de la Mare

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