Search results
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Quantitative stock survey and some biological and morphometric characteristics of the deep-sea red crab Geryon quinquedens off south west Africa
Abstract: In order to assess the abundance of the red crab Geryon quinquedens, two otter-trawl ... cruises were undertaken in July and September 1978, on the continental slope off South West Africa. A ... width, whereas the mode for males was at 11.2 cm. In general. larger animals tended to inhabit shallower ... states indicated that males were predominantly in the inter-moult stage while most females were either ...
Meeting Document : WS-CRAB-93/22 : Author(s): C.J. De B. Beyers and C.G. Wilke (South Africa)
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Considerations about managing the krill fishery at small spatial and temporal scales
managing the krill fishery at small temporal and spatial scales. We highlight that the devil is in the ... coastal areas. Closed coastal areas potentially protect near-shore krill-dependent predators from the ... closed coastal buffers will alter the potential levels of catch displacement, and therefore highlights ... the need for coupled research to ensure fishery displacement does not become too concentrated in other ...
Meeting Document : WG-EMM-2019/22 : Author(s): P.N. Trathan, V. Warwick-Evans and E. Young
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Further analysis of spatial patterns of benthic invertebrate habitats from fishery bycatch in the Ross Sea region
Abstract: High resolution VME taxa bycatch data (at the longline segment level) have been ... , but were at larger scales. Spatial analysis of these data allows the detectability of prevalent taxa ... indicate that several VME taxa are detected between 60% and 80% of the time when present, and that ... probability of detection was higher near areas with other high bycatch observations. Video transects on the ...
Meeting Document : WG-FSA-10/30 : Author(s): S.J. Parker, R.G. Cole and S.M. Hanchet (New Zealand)
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Proposal for GEF (Global Environment Facility) funding to support capacity building and training to the GEF-eligible countries with Antarctic interests
implement scientific research and monitoring in the Antarctic and Southern Ocean ecosystems, including ... ; Developing a collaborative ecosystem assessment and monitoring programme for the Antarctic LME, measuring ... potential physical and ecological degradation and destabilisation from the effects of climate change ... (particularly ocean acidification) and other factors Identifying and managing the risk from marine alien ...
Meeting Document : WG-EMM-13/44 : Author(s): Delegation of South Africa
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Changes in biomass of eight species of finfish around the South Orkney Islands (Subarea 48.2) from three bottom trawl surveys
Abstract: Stocks of finfish around the South Orkney Islands (Subarea 48.2) suffered substantial ... declines during the period the fishery was open from split year 1977/78 through 1989/90. Scientific bottom ... trawl surveys of finfish biomass within the 500 m isobath of the South Orkney Islands have been ... conducted by the Federal Republic of Germany in 1985, Spain in 1991, and the United States in 1999 ...
Meeting Document : WG-FSA-99/32 : Author(s): C.D. Jones (USA), K.-H. Kock (Germany) and E. Balguerías (Spain)
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Criteria for aging the otoliths of Dissostichus eleginoides from South Georgia (Subarea 48.3) and an analysis of aging precision
criteria to test. Two sets of criteria ate presented for aging the otoliths of Dissostichus eleginoides ... , one (C1) developed from previous work on the same species; the other (C2) adapted from generalized ... criteria used to age high latitude fish from the north-west Pacific Ocean. Growth structures were found to ... within and between observers, reflecting the complexity of the otolith structure. Aging using criteria C1 ...
Meeting Document : WG-FSA-98/52 : Author(s): J. Ashford (United Kingdom) and S. Wischniowski (Canada)
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Data on reproduction biology of Dissostichus mawsoni from the Ross Sea (Statistical Subarea 88.1)
Abstract: Macroscopic data of the field research obtained during fishing trips on board Spanish ... individuals from various SSRU in the Ross Sea were calculated. For one specimen with maximum observed weight ... of gonads (15.5 kg, GSI – 23.85 %), the individual absolute fecundity (IAF) and relative fecundity ... of gonads on various grounds in the Ross Sea during the fishery season confirmed previous conclusions ...
Meeting Document : WG-FSA-11/04 : Author(s): A.K. Zaytsev (Russia)
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Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... includes the Elephant Island peripheries and the west and south of the South Shetland Island, were ... collected by the commercial middle trawl fishing vessel. The data were processed and analyzed following ... identification) based on data from a transect-based survey. The weighted krill density and biomass were estimated ...
Meeting Document : SG-ASAM-18/08 : Author(s): S. Choi, K. Lee and D. An
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Research program on resource potential and life cycle of Dissostichus species from the Subarea 88.2 A in 2014–2017
. The main objectives are studying of toothfish migration from SSRU 88.1 K to Subarea 88.2 A. The survey ... country-members in order to unify the data collection plan and methods during the proposing mutli-member ... research program in the Ross Sea – Subarea 88.2. Author(s): Delegation of the Russian Federation Title ... : Research program on resource potential and life cycle of Dissostichus species from the Subarea 88.2 A in ...
Meeting Document : WG-FSA-14/13 : Author(s): Delegation of the Russian Federation
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Size selectivity of the RMT8 plankton net and a commercial trawl for Antarctic krill
Abstract: Net selection of the scientific RMT8 plankton net and a commercial sized pelagic trawl ... underrepresented in the RMT8. For the commercial trawl with a liner mesh size of 12mm the length classes smaller 35 ... and 45 mm are undersampled, probably depending on the size composition of the catch. A preliminary ... catch per haul. Author(s): V. Siegel (Germany) Title: Size selectivity of the RMT8 plankton net and a ...
Meeting Document : WG-EMM-07/28 : Author(s): V. Siegel (Germany)