Résultats de la recherche
-
An update of the ageing program for Patagonian toothfish (Dissostichus eleginoides) at the Australian Antarctic Division, including a summary of new data available for the Integrated Stock Assessment for the Heard Island and the McDonald Islands fishery (Division 58.5.2)
ageing program for the purposes of routine processing of Patagonian toothfish (Dissostichus eleginoides ... ) otoliths from the Heard Island and McDonald Islands fishery. With the reinitiation of this program a number ... of methodological refinements have been made to those outlined by Nowara et al. (2009), particularly ... in relation to the laboratory processing of otoliths and quality control in the assignment of fish ...
Meeting Document : WG-FSA-14/45 : Auteur(s): B.M. Farmer, E.J. Woodcock and D.C. Welsford (Australia)
-
Plan of research program of the Ukraine in Subarea 48.1 in 2018
Abstract: Ukraine proposes to carry out a scientific survey of Dissostichus spp. by bottom ... longline in the eastern part of Subarea 48.1 with a partial (insignificant area) covering the area under ... investigation in Subareas 48.2 and 48.5. Author(s): Delegation of Ukraine Title: Plan of research program of ...
Meeting Document : WG-SAM-17/17 : Auteur(s): Delegation of Ukraine
-
Preliminary results of oceanological research of Ukrainian vessels in the CCAMLR area for the season 2017/18
Abstract: In the fishing season of 2018, three Ukrainian fishing vessels collected oceanographic ... data (salinity and temperature). The method of data collection is described. A preliminary analysis of ... the data was carried out. Author(s): V. Paramonov Title: Preliminary results of oceanological ... research of Ukrainian vessels in the CCAMLR area for the season 2017/18 Approval: Approved Secretariat ...
Meeting Document : WG-SAM-18/27 : Auteur(s): V. Paramonov
-
Can the chemistry of otolith nuclei determine population structure of Patagonian toothfish Dissostichus eleginoides?
Abstract: Otolith nucleus chemistry resolved the population structure of Patagonian toothfish ... to South Georgia in the Southern Ocean. Concentrations of 55Mn, 88Sr, and 137Ba, ratioed to 42Ca ... , showed a sharp population boundary in the vicinity of the Polar Front, between South Georgia and the ... population heterogeneity not previously detected, suggesting the possibility of more than one South American ...
Meeting Document : WG-FSA-06/P2 : Auteur(s): Ashford, J.R., A.I. Arkhipkin and C.M. Jones
-
Oceanological factors affecting formation of mackerel icefish aggregations in the South Georgia area during different seasons of the year
Rocks. High level of energy exchange, intensive supply of food allow fish to distribute in the wider ... migrate to the spawning grounds. These migrations occurred in the near-bottom layer. The impulse of the ... amount of accumulated fat affects an individual fish readiness to spawning. Icefish spawning in the ... affect indirectly icefish aggregations formation through the food items, distribution of which depends on ...
Meeting Document : WG-FSA-05/76 : Auteur(s): Zh.A. Frolkina (Russia)
-
Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using the Japanese fishery data
Abstract: We examined seasonal variation in CPUE (catch per volume of trawled water) and diurnal ... vertical migration of Antarctic krill (Euphausia superba) associated with the brightness categories of the ... day based upon the angles between the center of the sun and the celestial horizon on the Scotia Sea ... twilight and shallowest around at evening twilight. The range of trawling depth was narrower in the certain ...
Meeting Document : WG-EMM-04/44 : Auteur(s): K. Taki, T. Hayashi and M. Naganobu (Japan)
-
Growth and maturation of Euphausia superba Dana in northern areas of its distribution range (with reference to South Georgia and Bouvet Island areas)
maturation rates as well as the average minimal sizes of E.superba are appreciably higher in the former than ... South Georgia area as compared to Bouvet Island. The differences in the growth and maturation rates of ... E.superba between these two areas persist with a change of climatic epochs. During the warmer climatic epoch ... observed during the warmer and one peak during the colder epoch. Author(s): Delegation of USSR Title ...
Meeting Document : SC-CAMLR-VIII/BG/22 : Auteur(s): Delegation of USSR
-
Age and Length Growth of Champsocephalus gunnari, Lonnberg 1905 (Pisces, Chaenichthyidae, in the Area of Elephant Island, West Zone, Antarctica
Abstract: In order to extend the knowledge on the age and growth of antarctic fishes, the authors ... present herein the results of the data processing arising from samplings o f a species belonging to the ... Chaenichthyidae family, Champsocephalus gunnari. The age determination of this species, was made using the otolith ... fine cutting technique. Through the reading of the growth rings the age classes corresponding to3, 4, 5 ...
Meeting Document : WG-FSA-85/11 : Auteur(s): A.P. Tomo and E. Barrera-Oro (Argentina)
-
Exploring age and growth dynamics of a historically overfished Sub-Antarctic fish species: The grey rockcod (Lepidonotothen squamifrons) in the vicinity of Heard Island and McDonald Island
been performed to assess the status of this species within the Heard Island and McDonald Island region ... (CCAMLR Division 58.5.2). This study has updated a range of biological parameters such as growth, maturity ... 24. Through the mapping of abundances the presence of three distinct geographical populations were ... : Exploring age and growth dynamics of a historically overfished Sub-Antarctic fish species: The grey rockcod ...
Meeting Document : WG-FSA-15/51 : Auteur(s): D. Maschette, D.C. Welsford and C. Gardner (Australia)
-
Use of cameras and sensors to monitor the behaviour and benthic impact of longline gears
Abstract: In order to investigate and monitor the ecological impact of longlines on the benthic ... environment and subsequently develop strategies for its management, the UK is conducting a series of research ... projects studying the potential impact of longline fishing gear on benthic habitats. The research has been ... structured around three approaches, each deploying a different format of benthic camera system and movement ...
Meeting Document : WG-FSA-2019/24 : Auteur(s): C. Darby