Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery. (Component of SC-CAMLR-VI/BG/4)
Abstract: The history of the Japanese krill fishery is reviewed briefly. Important aspects ... quality considerations- in particular the increasing tendency to avoid catching "green” krill ... . These factors result in Catch-per-Day and Catch-per-Haul measures being unlikely to index krill abundance ... of indexing the extent of the krill distribution through routine oceanographic monitoring merits attention ...
Meeting Document : WS-KCPUE-89/03 : Author(s): D.S. Butterworth (South Africa)
Review of Russian investigations of krill escape through the meshes of commercial trawls: approaches to estimating gross removal at krill fishery
Abstract: In this study the review of Russian investigations of krill escapement through ... of fine-meshed chafers) and analytical methods are presented. The main factors affected on krill ... mortality» assessment in krill fishery. It is suggested to use the models of probability-statistical theory ... of the «escape mortality» process; obtaining standardized indices of krill mortality during one fishing operation ...
Meeting Document : WG-EMM-10/19 : Author(s): S.M. Kasatkina (Russia)
Distribution of Antarctic krill concentrations exploited by Japanese krill trawlers and minke whates
Abstract: The distribution of krill (Euphausia superba) concentrations derived from Japanese ... krill fishing and minke whaling (Balaenoptera acutorostrata) data was investigated in relation to bottom ... by the pack-ice edge. When the ice-edge was at its southernmost limit (January- March), krill fishing data ... such as the continental shelf break and various banks may be important factors affecting minke whale distribution. Krill ...
Meeting Document : SC-CAMLR-VIII/BG/31 : Author(s): Delegation of Japan
CPUE, net towing depth and body length of krill during the winter operation of Japanese krill fishery around South Georgia
Abstract: Monthly CPUEs during winter operation of Japanese krill trawlers around South Georgia ... were calculated. The range of CPUE values in 1991 season (poor year of krill) was comparable ... from net towing depth. Net tow depth data implied that overall krill distribution in the the winter ... suggeted. Length frequency distribution implied the evidence of strong krill influx from the Antarctic ...
Meeting Document : WG-EMM-96/51 : Author(s): Kawaguchi, S., Ichii, T., Naganobu, M.
Operation results of Ukrainian vessels at Antarctic krill fishery in Subareas 48.2 and 48.3 in March-June 1994. Krill size composition
Abstract: In 1993 Ukraine has recommenced krill fishing which was terminated in 1993 ... of Ukrainian vessels at Antarctic krill fishery in Subareas 48.2 and 48.3 in March-June 1994. Krill size ... In 1993 Ukraine has recommenced krill fishing which was terminated in 1993. It is conducted by two ... Operation results of Ukrainian vessels at Antarctic krill fishery in Subareas 48.2 and 48.3 ...
Meeting Document : WG-Krill-94/33 : Author(s): V.A. Bibik and V.N. Yakovlev (Ukraine)
A comparison of gear selectivity among three fishing gears for Antarctic krill with notes on the demographic patterns and productivity of Antarctic krill during summer 2014
Abstract: Three different trawls were used to sample Antarctic krill for the determination ... the largest range of krill (15mm to 60mm), while the ENGEL trawl captured the narrowest (27 to 61 ... using fishing vessels if research gear cannot be accommodated. The patterns of krill length frequency ... showed that krill collected in Bransfield Strait and Elephant Island areas of the South Shetlands ...
Meeting Document : WG-EMM-14/37 : Author(s): C. Reiss (USA) and M. Espino Sanchez (Peru)
Implementation and preliminary results from the synoptic krill survey in Area 48, 2019 conducted by the Chinese krill fishing vessel Fu Rong Hai
Abstract: As a contribution to the joint effort on the large-scale synoptic krill survey of Area ... 48, the Chinese krill fishing vessel Fu Rong Hai conducted the survey in the Subarea 48.1 from ... for krill biology using a commercial midwater otter trawl. Acoustic data processing were carried out ... generally following the procedures applied in the CCAMLR 2000 survey analyses, and estimates of krill ...
Meeting Document : WG-EMM-2019/43 : Author(s): X. Wang, X. Zhao, B. Zou, G. Fan, X. Yu, J. Zhu, J. Zhang and Y. Ying
Proposal for an acoustic krill biomass survey in CCAMLR Subarea 48.1 in relation to the hydrological environment and in conjunction with carbon cycling and temperature adaptation experiments of krill and salps
Marine Living Resources (CCAMLR), we will conduct an acoustic krill (Euphausia superba) biomass survey ... ) investigating the role of krill and salps in Southern Ocean carbon cycling and the temperature adaptation ... will be conducted in conjunction with a detailed description of the biological and physical environment of the krill ... of the effect of climate change on krill and associated ecosystem-processes. The aim of this particular proposal ...
Meeting Document : WG-EMM-17/39 : Author(s): B. Meyer, L. Suberg, S. Fielding, O.R. Godø and C. Reiss
Can the length composition of krill in predator diets provide information on the age-dependence of krill natural mortality?
of krill is split between predator species. This method uses data on the length distribution of krill from ... predator stomachs. The proportions estimated depend, through the krill yield model, on the schedule ... of krill natural mortality at age. In principle, such a method would allow inferences about this schedule ... ., Butterworth, D.S. Title: Can the length composition of krill in predator diets provide information on the age ...
Meeting Document : WG-EMM-95/40 : Author(s): Thomson, R.B., Butterworth, D.S.
Report from the annual survey of Antarctic krill and apex predators distribution at South Orkney Islands in 2014, and assessing escape mortality of krill in trawls
conducted around the South Orkney Islands, using a commercial krill fishing vessel as research platform ... of Antarctic krill as well as the occurrence and distribution of krill predators. Author(s): B.A. Krafft ... the annual survey of Antarctic krill and apex predators distribution at South Orkney Islands in 2014 ... , and assessing escape mortality of krill in trawls Approval: Approved ...
Meeting Document : WG-EMM-14/16 : Author(s): B.A. Krafft (Norway), L.A. Krag (Denmark), T.A. Klevjer, G. Skaret and R. Pedersen (Norway)