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1. Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of depredation levels

   seals. Both single- and mixed-species interactions were observed. Fishing technique Fishing vessels ... , as gener- ally agreed, depredation often results in many fi sh being entirely removed from the longlines ... are rare (Capdeville, 1997; Gonzales and Olivarria, 2002; Kock, 2001). However, a signifi cant impact ... …; Pitman et al., 2001). When these species occur together, sperm whales, due to their greater diving ... of 103 individual whales to be identifi ed. The analysis of photoidentification indicated that a ... whales. These two species, alone or in co-occurrence with each other, were observed in 71% of the 1 308 ... two species, alone or in co-occurrence with each other, were observed in 54% of the 6 262 longlines ... marine mammal species alone or in co-occurrence. In the Crozet EEZ, CPUE was found to be reduced by 22.5 ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 67–82 : Author(s): Roche, C., C. Guinet, N. Gasco and G. Duhamel

2. Estimating optimal observer coverage in the Antarctic krill fishery

   on the particular scena- rio being investigated. Nevertheless, it is of central importance to hypothesis testing ... of 62% of hauls observed during an observer’s placement and of those only 55% being sampled for krill ... in Table A4. Krill length data from 2001 were excluded, as krill length sampling coverage ... % of hauls set by a vessel per sea- son being sampled; • all vessels being observed at least once every two ... ratio is sufficiently close to 50% that sampling needs to be efficient at both vessel and haul level. It ... is proposed that an efficient sampling proportion, at least for South Georgia, should be >50% of ... . The South Georgia data suggest that such strategies should be pursued for at least four years before ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Author(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

3. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   m and this forms the depth boundary of the estimation volume, due to the concentrations (no. m–3) here being ... biomass or numerical density within the defined volume of the water that is being measured, as well ... to the attenuation depth for the frequency being used, the major challenge is to attribute the detected backscatter ... ; Hill et al., 2012; Boyd and Murray, 2001; Trivelpiece et al., 2011; Reid and Croxall, 2001). However ... of each method of sampling krill, i.e. with nets (for historical time series, demographic information ... recommended. Observations that krill occupy the underice layer, the 0–10 m layer, the deeper water column and ... recruitment. This variability masks top–down predation controls that may operate over multi-decadal scales ... that they are not currently birds or mammals. Krill feed across three trophic levels and can control ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Author(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

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

   eggs, C. wilsoni hatch from late austral winter (August–September) onwards (Kock et al., 2008). Post ... (August–early September), 1 September was considered as the birthdate of the species. It is assumed ... the reproducibility of age esti- mates (or ageing precision) (Campana, 2001), the index of average percent error (APE ... dataset rather than the mean length-at-age (Haddon, 2001). The growth performance index (Φ’ = 2 log ... 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 ...

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

5. Marine debris and fishing gear associated with seabirds at sub-Antarctic Marion island, 1996/97 and 1997/98: in relation to longline fishing activity

   and the 1997/98 field seasons. Fishing gear increased at a rate 10 times higher than 'other' (non ... -fishing) marine debris over this period. Sixty 'rope nooses' apparently used for suspending ... in association with wandering albatross nests, while 'other' (non-fishing) marine debris was found most ... ceporononoro anb6aTp0Ca M mxnoro rMraHTCKOr0 6ypeBeCTHMKa. Tpa oco6u nTMU (mxub~fi ... 6enoropnoro 6ypeBeC~~kiKa M OAAH ~~pocnb ... toothfish heads which are removed during processing and dumped without the hooks being removed (Huin ... tissues, indicating the possibility of harmful chemicals from marine debris being absorbed ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 85–96 : Author(s): Nel, D.C. and J.L. Nel

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

   . Pe310Me C 60pTa KOMMep'IeCKOf'O cYAHa BeJIOC b Ha6JIIOAeHI1e 3a flnOHCKHMH npOMWCJIOBWMH onepaQHflMH ... C pa3JIH'IHbIM pacnpeAeJIeHHeM Ha pa3HbIX npOMbICJIOBbIX y'IaCTKax. BeJIH'IHHa "YJIOB Ha BpeMfI TpaJIeHHfl ... " OTpa)l(aeT nJIOTHOCT b BHYTPH CKOIIJIeHHfl; C'IHTaJIOCb, 'ITO BeJIH'IHHa "YJIOB 3a AeHb" flBJIfleTCfl ... but their densities were too low for being detected by sonar, fish-finder was the only method on which to rely ... 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 ...

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

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

   , it has been demonstrated (Ashford et al., 2001) that, over the lifespan of the fi sh, age estimates ... for readers estimating age (Ashford, 2001). However, although the nucleus and annuli are easily ... (2001). The left or right otolith from sampled fi sh was randomly selected, baked and ground using ... was diffi cult, so these were mounted in epoxy using square moulds, before being ground individually ... 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 ...

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

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

   of prey but being primarily fish-eating piscivorous (Fenaughty et al., 2003; Pinkerton et al., 2010 ... , 2001; Post, 2002). Therefore, using a combination of FA profiles (diet composition) and stable ... tissues for isotope analysis was car- ried out in a mixed solution of methanol, chloro- form and water ... . Rasmussen. 2001. Variation in δ15N and δ13C trophic fractiona- tion: implications for aquatic food web ... 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 ...

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

9. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

   the most abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being ... the most abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being ... abundant marine mammal observed in the vicinity of vessels when lines were being hauled, being present ... off some lines. Off Chile, sperm whales have been reported as being entangled in longline fi shing ... in the 2000, 2001 and 2002 seasons. Fishing depth in these seasons ranged from 169 to 2 150 ... collected by scientifi c observers on 8 vessels in 2000, 6 vessels in 2001 and 11 of 15 vessels in 2002 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Author(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

10. Factors affecting the incidental mortality of seabirds in the Dissostichus eleginoides fishery in the southwest Atlantic (Subarea 48.3, 1995 season)

    of streamer lines and hook size were important sources of variation, both in vessels' analyses of catch ... , IIpeACTaBJIeHHbIX KaXnbIM C Y A H O M CBOeMy HaqMOHanbHOMy IIpOMbICJIOBOMy BeAOMCTBy, M nOnOJIHeHb1 M~@op~aqMefi ... fleets confirmed that hauls made during the full moon phase resulted in significantly more birds being ... test); the latter resulted in significantly more birds being taken in comparison with hauls conducted ... of each vessel, amounted to 1428, of which 77.8% were reported as being P. aequinoctialis. This figure ...

    Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 79–91 : Author(s): Moreno, C.A., P.S. Rubilar, E. Marschoff and L. Benzaquen

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