Resultados de la búsqueda
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Genetic population structure of the mackerel icefish, Champsocephalus gunnari, in Antarctic waters
, with the proportion of polymorphic loci, P = 0.175, mean heterozygosities per locus, HL = 0.058, and ... expectations, with significant deviations due exclusively to heterozygote deficiencies. Genetic differentiation ... ; South Georgia vs. South Orkneys) sea areas. Nei’s (1973) gene diversity analysis indicated that over 85 ... % of the total gene diversity was due to the within-population component, with progressively higher ...
Meeting Document : WG-FSA-91/22 : Autor(es): G.R. Carvalho and M. Warren (United Kingdom)
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Interannual variation in the autumn diet of the gentoo penguin Pygoscelis papua at Laurie Island, Antarctica
, species of the family Nototheniidae predominated in the diet with G. gibberifrons as the most important ... T. newnesi were also well represented in the three sampling periods. A total of 1628 squid lower ... terms of frequency of occurrence, mass and number is compared with results of previous studies. Author(s ...
Meeting Document : WG-EMM-99/19 : Autor(es): N. Coria, M. Libertelli, R. Casaux and C. Darrieu (Argentina)
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Results from the 2019 annual acoustic krill monitoring off the South Orkney Islands
comparison with previous survey years and provide some context for the large scale survey estimate, we here ... surveys from 2011 to 2018. The distribution was similar to previous years with most krill along the shelf ... (s): G. Skaret, B.A. Krafft, G. Macaulay, T. Knutsen and O.A. Bergstad Title: Results from the 2019 ...
Meeting Document : WG-EMM-2019/69 : Autor(es): G. Skaret, B.A. Krafft, G. Macaulay, T. Knutsen and O.A. Bergstad
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Bird Island, South Georgia during the 1999 winter and the 1999/2000 pup rearing season
plastic packaging bands, double that observed in the 1998 winter, and a return to thehigh levels observed ... the early 1990039;s. Incidences of severe injury have also decreased. Entanglements in polypropylene ...
Meeting Document : SC-CAMLR-XIX/BG/02 : Autor(es): Delegation of the United Kingdom
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Variation in the diet of the blue-eyed shag Phalacrocorax atriceps throughout the breeding season at Half-Moon Island, South Shetland Islands
important in mass (79%), followed by N. nudifrons and T. newnesi. The overall composition of the diet was ... qualitatively and quantitatively similar to that reported for the 1992/93 austral summer at the same colony ... . However, the pellet analysis throughout the 1993/94 breeding season showed that large N. coriiceps were ...
Meeting Document : WG-EMM-95/78 : Autor(es): Barrera-Oro, E., Casaux, R.
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation
Abstract: Attempts to estimate natural mortality, as a single constant M, simultaneously with ... . The model based on a new mortality equation (CCODE model) uses an ODE with constant within-year catch ... per unit time for each age class, and as a result allows catch to be removed directly from the ... fishery that is not substantially depleted within any single fishing season, given fishers tend to ...
Meeting Document : WG-SAM-10/11 Rev. 1 : Autor(es): S.G. Candy (Australia)
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Winter habitat selection by Antarctic krill will increase krill-predator-fishery interactions during ice free years
around the Antarctic Peninsula in winters with contrasting ice conditions provide the first acoustic ... estimates of krill biomass, habitat use, and association with top predators to examine these likely ... , or primary production and in areas that are becoming more frequently ice free (Stammerjohn et al ... open waters are available to fishing vessels. Changes to conservation measures may be necessary to ...
Meeting Document : WG-EMM-15/05 : Autor(es): C.S. Reiss, A. Cossio, C.D. Jones, A. Murray, G. Mitchell, J. Santora, K. Dietrich, E. Weiss, C. Gimpel, J. Walsh and G.M. Watters (USA)
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Green krill, the indicator of micro- and nano-size phytoplankton availability to krill
significant regressions with chlorophyll-a concentrations in micro and nano- size fraction. This result shows ... in the natural environment. Author(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan) Title: Green ...
Meeting Document : WG-EMM-98/29 : Autor(es): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)
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Potential interactions between wandering albatrosses and Dissostichus eleginoides fisheries at South Georgia
level of potential risk of interaction with Patagonian toothfish Dissostichus eleginoides longline ... risk from these fisheries at this time. We recommend that the South Georgia longline fishery for ... Dissostichus should be managed so as to avoid fishing between March and mid-May. Author(s): Prince, P.A ...
Meeting Document : WG-FSA-95/43 : Autor(es): Prince, P.A., Croxall, J.P.
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DEPREDATION AROUND SOUTH GEORGIA AND THE IMPLICATIONS ON STOCK ASSESSMENT OF D. ELEGINOIDES
%) with killer whales present on 562 lines (3.8%) and sperm whales on 2588 lines (17.7%). By comparing the ... catch per unit efforts (CPUEs) with and without the presence if cetaceans, the amounts lost were also ... . To date, a total of 35 killer whales and 65 sperm whales have been seen, with re-sightings occurring ... distance of 3.4nm away were picked up by the hydrophones and it is thought that these acoustic cues could ...
Meeting Document : WG-FSA-09/16 : Autor(es): J. Moir Clark, D.A. Agnew, P. McCarthy and M. Unwin (United Kingdom)