Resultados de la búsqueda
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Fishes of the Ross Sea Region – A field guide to common species caught in the longline fishery
working on toothfish longline fishing vessels to identify the main species of fishes taken in the Ross Sea ... region of Antarctica. Technical terms are kept to a minimum, and identification features are mostly those ... species of crocodile icefishes (Channichthyidae), and cod icefishes (Nototheniidae). It does not cover all ... about the identification of some of the fishes, and taxonomic study (beyond the scope of this guide) is ... . Often flattened and broad posteriorly. Median fins. Unpaired fins located in the middle of the upper ... features: Middle lateral line with 64 to 77 tubed scales, extending forward to near the rear edge of the ... canine-like teeth near the middle of the upper jaw. Colour: Large individuals are brownish-grey on ... short middle lateral line of 35 to 48 tubed scales, with the front end of the line separated from the ...
Document : Site Section: Publications
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The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia
, the most numerous- fish taxon, 98% were taken between early February and the middle of March ... Abstract: The diet of lactating female Antarctic fur seals Arctocephalus gazella at South Georgia ... was investigated during the pup rearing period (January- March) of 1991-1994. Antarctic Krill ... Euphausia superba was the main prey item, occurring in 88% of all scats (n=497), whereas fish occurred in 47 ...
Meeting Document : WG-EMM-95/28 : Autor(es): Arnould, J.P.Y., Reid, K.
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Milk fatty acid signatures indicate both major and minor shifts in foraging ecology of lactating Antarctic fur seals
Abstract: Fatty acid signature analysis is based on the conservation and unique signatures of ... fatty acids in the marine food chain and it may be useful in determining the composition of seal diets ... ), mid (n=11), and late (n=8) foraging trip intervals, and demonstrate its use in detecting shifts in ... perinatal fast are derived largely from blubber mobilization and thus likely resemble an integration of ...
Meeting Document : WG-EMM-97/14 : Autor(es): Boyd, I.L., Iverson, S.J., Arnould, J.P.Y.
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Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill
Paper Title: Effects of recruitment variability and natural mortality on generalised yield model ... natural mortality rate of 0.8 and recruitment variability generated using a Beta distribution for ... proportional recruitment of krill. In this study, krill sampling data for empirical size frequencies were ... supplied to the GYM as the ‘vector of recruitments’ input option to simulate the population dynamics of ... The annual catch of Antarctic krill (Euphausia superba) in the Scotia Sea (FAO Statistical Subareas ... 48.1, 48.2, 48.3 and 48.4) is limited by a trigger level of 620 000 tonnes until a procedure for ... division of the precautionary catch limit of 5.61 million tonnes into smaller management units has been ... approach that can be used to compare population responses to proposed levels of harvest against decision ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Autor(es): Kinzey, D., G. Watters and C.S. Reiss
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Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at South Shetland Islands
in a loss of 35% of the initial mass, comprising 63% of initial body fat and 20% of initial body ... gained while at sea. However, protein loss expressed in absolute terms or as a proportion of that present ... , King George Island (25 de Mayo). During lactation females spent a mean of 6021±1365 Mj, which resulted ... to recover an average of 55% of the mass, including 46% of the fat, 71% of the protein and 47% of the ...
Meeting Document : WG-EMM-04/33 : Autor(es): A.R. Carlini, G.A. Daneri, M.E.I. Márquez (Argentina), H. Bornemann (Germany), H. Panarello, R. Casaux (Argentina), S. Ramdohr and J. Plötz (Germany)
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An Apparent Decrease in the Prevalence of “Ross Sea Killer Whales” in the Southern Ross Sea
very abundant penguin, seal and whale components, loss of the toothfish option for Ross Sea killer ... the loss of large fish as a prey choice. Author(s): D.G. Ainley, G. Ballard and S. Olmastroni Title ... occurrence patterns and diet of RS killer whales, and present new information on numbers observed in the ... large Antarctic toothfish (Dissostichus mawsoni), as the review herein demonstrates. On the basis of sea ...
Meeting Document : WG-EMM-09/P01 : Autor(es): D.G. Ainley, G. Ballard and S. Olmastroni
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A quantified Bayesian maximum entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the 2000 CCAMLR survey
Abstract: We present the results of an alternative method of estimating krill abundance, and ... producing maps of krill distribution, from the data collected during the 2000 CCAMLR survey of the Scotia ... unsurveyed off-transect portions of the survey area were found by interpolation, and thus values for total ... inferred. The MaxEnt formalism allows an objective choice of the parameters of the interpolation, and hence ...
Meeting Document : WG-EMM-05/42 : Autor(es): B.G. Heywood, S.F. Gull and A.S. Brierley (United Kingdom)
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Joinville–D’Urville Islands (Subarea 48.1) – a former fishing ground for the spiny icefish (Chaenodraco wilsoni), at the tip of the Antarctic Peninsula – revisited
icefish (Chaenodraco wilsoni), at the tip of the Antarctic Peninsula – revisited Abstract / Description ... : The former fishing ground off Joinville–D’Urville Islands was revisited in the course of the Antarctic ... Expedition ANT XIX/3 by RV Polarstern in February 2002. Five hauls were conducted north of the two islands at ... depths of 149 to 282 m on 21 February 2002. Published and unpublished reports from fishing operations in ... adult females caught (n = 10) suggested that C. rastrospinosus was in the middle of the spawning ... (Pleuragramma antarcticum). When fi sh reached 4 years of age they moved to the east again. They fi rst ... the middle of its spawning season when taken in the second half of February. Sosinski et al. (1981 ... GROUND FOR THE SPINY ICEFISH (CHAENODRACO WILSONI), AT THE TIP OF THE ANTARCTIC PENINSULA – REVISITED ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 1–20 : Autor(es): Kock, K.-H., L. Pshenichnov, C.D. Jones, K. Shust, K.E. Skora and Zh.A. Frolkina
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Fishery Report 2017: Dissostichus eleginoides Prince Edward Islands South African EEZ (Subarea 58.7 and part of Area 51)
African EEZ (Subarea 58.7 and part of Area 51) ... present season. 6. Fishing effort in the South African EEZ is concentrated to the north and the east of ... compensate for the expected loss of revenue associated with setting Spanish longline gear, vessels were ... cetaceans, can contribute up to 50% of loss in catch landings, there have been no reports of incidental ... : Dissostichus eleginoides Prince Edward Islands South African EEZ (Subarea 58.7 and part of Area 51 ...
Document : Site Section: Publications
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Fishery Report 2018: Dissostichus eleginoides Prince Edward Islands South African EEZ (Subarea 58.7 and part of Area 51)
African EEZ (Subarea 58.7 and part of Area 51) ... present season. 6. Fishing effort in the South African EEZ is concentrated to the north and the east of ... the expected loss of revenue associated with setting Spanish longline gear, vessels were eligible to ... cetaceans, can contribute up to 50% of loss in catch landings, there have been no reports of incidental ... : Dissostichus eleginoides Prince Edward Islands South African EEZ (Subarea 58.7 and part of Area 51 ...
Document : Site Section: Publications