Resultados de la búsqueda
-
Molecular analysis of stomach contents from Antarctic toothfish (Dissostichus mawsoni) collected from Area 58 and 88 from 2016 to 2018
between two species appear to be related to the size of D. mawsoni. Many of fish taxa in the stomach of D ... (~600 bp) in this study may not have enough size for the clear analysis of haplotypes. Further study ... , which is native to the Southern Ocean. Although it plays an important role in the Antarctic ecosystem ... , the ecology of D. mawsoni is still fragmental mainly due to the limited accessibility for the sample ...
Meeting Document : WG-FSA-2019/37 : Autor(es): S.R. Lee, S.-G. Choi, S. Chung, D.H. An and H.-W. Kim
-
AMLR Hydroacoustic Survey System Description of Methods, A Case Study
Abstract: The AMLR hydroacoustic system used for surveys in the vicinity of Elephant Island and ... ensures data integrity and repeatability of analytic results. The variability inherent in the distribution ... King George Island during 1987-1989 has hardware and software components. The method of analysis ... proceeds from the basic integration data (lm bins by 1min outputs) to the stratification of these data into ...
Meeting Document : WG-KRILL-89/10 : Autor(es): M.C. Macaulay (USA)
-
Influence of data quality and quantity from a multiyear tagging program on an integrated fish stock assessment
, particularly the effects of the size of tagged fish compared with the size of fish in the catch (tag size ... , fishing, and data collection, this study investigated how the bias and precision of biomass estimates from ... -overlap), numbers of tagged fish, duration of the tagging program, using catch-at-length or catch-at-age ... relatively large number of size classes, low recapture numbers collected in short tagging programs with a 100 ...
Meeting Document : WG-FSA-13/P03 : Autor(es): P. Ziegler
-
Distribution and ecology of Chaenocephalus aceratus (Channichthyidae) around South Georgia and Shag Rocks (Southern Ocean).
Abstract: Chaenocephalus aceratus (Family Channicthyidae) is one of the dominant species of ... demersal fish living on the South Georgia shelf where it is caught in low numbers as by-catch in the ... that growth was fast in the first five years with males and females attaining lengths at first spawning ... of 440 mm TL and 520 mm TL. The diet was comprised of fish and crustaceans, with an ontogenetic shift ...
Meeting Document : WG-FSA-07/P5 : Autor(es): W.D.K Reid, S. Clarke, M.A. Collins and M. Belchier. (Polar Biol., 30 (12): 1523–1533 (2007))
-
Fitting a von Bertalanffy growth model to length-at-age data accounting for length-dependent fishing selectivity and length-stratified sub-sampling of length frequency samples
Abstract: Response-biased sampling in the context of regression modelling occurs when sample ... units are selected with a probability that is a function of the response. In sampling to obtain fish to ... process involving a particular gear, and (ii) the method of on-deck sub-sampling fish for ageing from the ... random length frequency sample. When the selectivity of the gear combined with availability of fish to be ...
Meeting Document : WG-FSA-SAM-05/13 : Autor(es): S.G. Candy (Australia)
-
Re-organisation of WG-FSA Report
restructure the WG-FSA report. In early 2004, the extend and nature of the work required was developed in ... Abstract: In 2003, WG-FSA and the Scientific Committee identified the need to rewrite and ... consultation between the Conveners of WG-FSA and WG-IMAF, and the Chair of the Scientific Committee ... Everson to develop certain elements of the restructure (see SC CIRC 04/11 and 04/16). Dr Everson’s first ...
Meeting Document : WG-FSA-SAM-04/06 : Autor(es): CCAMLR Secretariat
-
Acoustic discrimination of southern ocean zooplankton
Abstract: Acoustic surveys in the vicinity of the sub-Antarctic island of South Georgia revealed ... the existence of a number of horizontally extensive yet vertically discrete scattering layers in the ... upper 250 m of the water column. These layers were fished with a LonghurstHardy plankton recorder (LHPR ... each scattering layer was composed predominantly of a single species of either the euphausiids ...
Meeting Document : WG-EMM-97/54 : Autor(es): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.
-
Review of biological parameters for Ross Sea skates
. Differences in length-weight relationships among regions raise doubt about the conspecificity of A. georgiana ... (TL). The length at maturity of females is not well determined but is probably in the range 95–100 cm ... both sexes combined is: TLt = 101.3(1? e?0.308[t+1.30]). The best estimate of longevity in A. georgiana ... Abstract: Biological parameters were reviewed and updated for the two main species of skates ...
Meeting Document : WG-FSA-06/31 : Autor(es): M.P. Francis (New Zealand)
-
Southern royal albatross Diomedea epomophora census on Campbell Island, 4 January–6 February 1996, and a review of population figures
variability in counting effort between years. Nevertheless, numbers of nests have increased since the first ... the period 4 January to 6 February 1996 of the 1995-96 breeding season. A total of 7787 occupied nests ... was counted. Comparisons of different field census techniques and a measure of the rate of egg loss ... suggest that 8200-8600 pairs were nesting in the 1995-96 breeding season. The count WDS 23% higher than in ...
Meeting Document : SC-CAMLR-XVII/BG/13 : Autor(es): Delegation of New Zealand
-
A review and preliminary analysis of CEMP data
Abstract: A review of the data in the CEMP database revealed minor inconsistencies that have now ... could be the cause. An examination of migration patterns in the Peninsula region would make show the ... . Other problems were detected, such as the use of old forms and Standard Methods, and the increasing ... amount of automated data being collected and submitted. Members should ensure that they use the most ...
Meeting Document : WG-EMM-02/7 : Autor(es): Secretariat