Resultados de la búsqueda
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Age determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula subarea (Subarea 48.1)
most reliable method. Mean length data at age presented here for Low I. specimens were compared with ... scale readings gave a result of one year more. This could arise from the difficulty in differentiating ... , while Hoffmann (1982) worked with first pelvic fin ray. Later on, Clasing et al. (1985), using otoliths ... 1 3 1 4 1 5 1 6 1 7 1 8 1 9 Mean length (cm) data according to age (years) of Notothenia ... one extra year (Table 1). This could arise from the difficulties with false checks as mentioned above ... presented here for Low I. specimens were compared with previous published values. This confirmed that fish ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 143-160 : Autor(es): Barrera-Oro, E.
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Analisis de los censos de Arctocephalus gazella efectuados en el sitio de especial interes cientifico no. 32, Isla Livingston, Antarctica
with the purpose to clarify its population size, between the Antarctic seasons 1965-66 and 1991-92. The ... results show that the population size of this species, in the study area increased during 26 years, form ...
Meeting Document : WG-CEMP-93/24 : Autor(es): A. Aquayo L. and D. Torres N. (Chile)
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Fish by-catch in the krill fishery: 2018 update
the commercial krill fishery catch data. As in previous years there was a high degree of overlap in ... the most frequently reported taxa in the C1 data and SISO data, with Lepidonothen larseni the most ...
Meeting Document : WG-FSA-18/10 : Autor(es): CCAMLR Secretariat
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Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal
changed throughout the year with the highest values occurring during the summer which has implications for ... including one individual in two separate years. Whilst the sample size is small the results represent an ... 22 and 31% of the time with maximum of 74 hours and a median of between 9 and 11 hours. The longest ... behaviour within, areas important to breeding populations of birds and other seals, coupled with the ...
Meeting Document : WG-EMM-18/P09 : Autor(es): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada
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Fishery Report: Exploratory fishery for Dissostichus spp. in Division 58.4.2
Size distribution of catches ........................................................ 3 2. Stocks ... and areas ......................................................................... 3 3 ... association with a new fishery for Chaenodraco wilsoni, Lepidonotothen kempi, Trematomus eulepidotus and ... 2001/02 in association with a new fishery for Macrourus spp. In 2002/03, the fishery for Dissostichus ...
Document : Site Section: Publications
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Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review
haemoglobin. With the exception of one species, icefish live only in the cold – stable and oxygen – rich ... not attain maturity before they are 5 – 8 years old. Spawning period of most icefish species is autumn ... the 1970’s and 1980’s with Champsocephalus gunnari as the main target species. Most stocks of this ...
Meeting Document : WG-FSA-04/10 : Autor(es): K.-H. Kock (Germany)
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... of un-assessed cohorts and provide for more stable catches between fishing years, while meeting the ... in recruitment, natural mortality and growth of these fish, combined with the need to maintain a ...
Meeting Document : WG-FSA-03/32 : Autor(es): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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Spatial distribution of foraging by female Antarctic fur seals
years when there were different amounts of prey available. Females were constrained to forage mainly ... dispersed to specific regions associated with the continental shelf east of Patagonia (>1000 km) and to ... by lactating female fur seals predicted spatial distributions that were consistent with past ...
Meeting Document : WG-EMM-01/26 : Autor(es): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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Feasibility of lead-radium dating the otoliths of blackfin icefish (Chaenocephalus aceratus) and ocellated icefish (Chionodraco rastrospinosus)
, sample mass for the pooled otolith samples was low (~0.4 g). This finding, coupled with low radium-226 ... approach has some disadvantages, such as the circularity associated with developing a mass-growth model ... few years of growth) is possible for these species, provided there is enough sample mass and perhaps ...
Meeting Document : WG-FSA-10/17 : Autor(es): A.H. Andrews, M. La Mesa and J. Ashford (USA)
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A SIMULATION MODEL FOR EVALUATING MANAGEMENT STRATEGIES TO CONSERVE BENTHIC HABITATS (VULNERABLE MARINE ECOSYSTEMS) WHICH ARE POTENTIALLY VULNERABLE TO IMPACTS FROM BOTTOM FISHERIES
level that can naturally restore the original structure and function within 20 years. It does not ... ”, a categorisation fraught with difficulty. Instead, it means that habitats for which this would not ... as mosaics of a number of habitats along with their rates of decay, recovery and connectedness ...
Meeting Document : WG-SAM-09/21 : Autor(es): A.J. Constable (Australia)