Resultados de la búsqueda
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REVISED AGE AND GROWTH ESTIMATES FOR ANTARCTIC STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA
that these skates initially grow very rapidly for about five years, after which growth almost ceases ... that is radically different from the published interpretation. By counting fine growth bands in the ... caudal thorns instead of broad diffuse bands, we have generated growth curves that suggest much slower ... growth, greater ages at maturity (about 20 years compared with 6–11 years) and greater maximum ages (28 ...
Meeting Document : WG-FSA-08/21 : Autor(es): M.P. Francis (New Zealand) and M.J. Gallagher (Ireland)
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Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast
fisheries of the patagonian toothfish Dissostichus eleginoides related with the selectivity of the type and ... East Pacific, are added. The data show that the circle hooks are far more efficient that the right ones ... . The size frequency of the population collected with straight hooks No3 and 4 are not significatively ... differences. It is notorious that female proportion increases significatively in the catches, at the same time ...
Meeting Document : WG-FSA-91/11 : Autor(es): C.A. Moreno (Chile)
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CPUE values derived from Soviet fishery statistics as indicators of Antarctic krill density fluctuations in 1977–1991
- 1991 are considered. It is assumed that these values adequately describe trends in krill density ... fluctuations. Rather high stability of the values investigated is revealed. It is proposed that krill density ... of 170-200 g/m2 may be considered as an average characteristic value for the area 48. It was revealed ... , that interannual CPUEs variability is lower for the area 48 as a whole, comparing subareas, most ...
Meeting Document : WG-EMM-04/39 : Autor(es): F.F. Litvinov, A.Z. Sundakov and G.N. Andrianov (Russia)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1992 winter and 1992/93 pup-rearing season
years and with twice as many seals suffering serious injuries. Almost all animals involved were juvenile ... disturbing, particularly following two years of relatively low incidence. It cannot be accounted for by ... , except possibly for the increase in vessels engaged in long-line fishing, which uses bait boxes tied with ... packaging bands. CCAMLR needs to renew its vigilance with respect to marine debris and should consider ...
Meeting Document : SC-CAMLR-XII/BG/06 : Autor(es): Delegation of United Kingdom
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Información sobre un taller de capacitación dirigido a observadores científicos e inspectores de la CCRVMA
(20–24 August 2018). Author(s): Delegation of the Russian Federation Title: Information about a ...
Meeting Document : SC-CAMLR-XXXVII/15 : Autor(es): Делегация Российской Федерации
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Progress towards validation of ageing of Dissostichus eleginoides using otoliths
, fish have been treated with strontium to mark their otoliths for validation of subsequent age ... estimation. Otoliths from 69 fish that were at liberty for at least 350 days were eventually examined ... . Results indicate that current methods for ageing D. eleginoides are appropriate: the number of observed ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ...
Meeting Document : WG-FSA-04/67 : Autor(es): K. Krusic-Goluband R. Williams (Australia)
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Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations
one species overlapping with that of the other. Author(s): A.G. Wood (United Kingdom), B. Naef ... two species covers an estimated 440,000 and 640,000 km2 respectively, with very substantial overlap ... . In contrast, kernel estimation reveals that the main foraging areas of these two sympatric ... , the foraging areas cover c.81,500 and c.119,700 km2 respectively, with 42 % and 50 % of the range of ...
Meeting Document : WG-FSA-99/19 : Autor(es): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)
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Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3
Abstract: With samples originated in the Chilean longline fishery of Dissostichus eleginoides of ... , fishing depth and hook type. It was determined that there was no significative differences, in M value, in ... the considered cases with the different growing parameters, with the exception of the case of fishing ... found that there were significative differences between fishing sites and curve hooks N° 14 and straight ...
Meeting Document : WG-FSA-92/21 Rev. 1 : Autor(es): C.A. Moreno and P.S. Rubilar (Chile)
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Mitigation of seabird captures during hauling in CCAMLR longline fisheries
/ Description: In recent years there has been an increased focus on reducing seabird captures that occur during ... suggest that there are two key aspects of effective BEDs, firstly that they provide a deterrent to ... seabirds landing adjacent to the line as it is being hauled, and secondly that seabirds are deterred from ... these two key functional characteristics into the specification of a BED to be deployed by longline ... weighting the streamers with objects that would ‘jib’ about in the wind and water, such as stainless steel ... problems with entanglement in the hookline/hauling gear in bad weather but that the heavier weighted ... - cussion with observers and operators, suggests that there are two key aspects of effective BEDs: firstly ... different assemblage of seabird species associ- ated with vessels than in Subarea 48.3, suggest that a Type ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 155–162 : Autor(es): Reid, E., B. Sullivan and J. Clark
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Extension to the krill-predator modelling exercise
krill harvesting is found to be strongly dependent on the estimate of the maximum annual growth rate (R ... ) which the population can achieve. For R=10%, it is estimated that a krill harvesting intensity rate γ of ... slightly more than 0.1 would be required to reduce the seal population to half its pre-exploitation level ... -related mortality effects from overall survival rate data before they can be taken further. Author(s ...
Meeting Document : WG-EMM-96/67 : Autor(es): Thomson, R.B., Butterworth, D.S.