Resultados de la búsqueda
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The role of fish in the Antarctic marine food web: differences between inshore and offshore waters in the southern Scotia Arc and west Antarctic Peninsula
Abstract: The role of fish in the Antarctic food web in inshore and offshore waters is analysed ... feed on zooplankton (mainly krill in summer), and are links between lower and upper levels of the food ... ). Through the higher fish predators, energy is transferred to land in the form of fish remains, pellets ... (birds), regurgitations and faeces (birds and seals). But in the wide context of the Antarctic marine ...
Meeting Document : WG-FSA-02/6 : Autor(es): E. Barrera-Oro (Argentina)
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Interaction of sperm whales with bottom longline and the Mammal and Bird Excluding Device (MBED) operation in the Patagonian toothfish (Dissostichus eleginoides) fishery in the southwestern Atlantic
in the southern zone (latitude 50º 00’ S) at an average depth of-1282 m. 57.2% of the total number of ... hauls were observed. Onboard observers recorded: a) quantity and quality of fish parts remaining in the ... 77.4 % of total observed sets and the effective predation was determined in 22.6 % with MBED. Effective ... predation was determined in 44 % of observed sets during the day period from 12:00 to 18:00 hours GMT. Lips ...
Meeting Document : WG-FSA-07/23 : Autor(es): O. Pin and E. Rojas (Uruguay)
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Long-term changes in the size composition of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, after the 1978–1980 fishery in the area
impact of the fishery in the area in 1978-80, allowed the comparison of the variations in mean annual ... the ecologically similar but unexploited N. coriiceps. The sharp decline in the abundance of N. rossii ... 1986/7 and the duration of the inshore phase of the species, which is known to last for 6-7 years. In ... . Barrera-Oro and N.S. Alescio (Argentina) Title: Long-term changes in the size composition of fjord ...
Meeting Document : WG-FSA-07/52 : Autor(es): E.R. Marschoff, E.R. Barrera-Oro and N.S. Alescio (Argentina)
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Research program to examine the life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region marine protected area (RSRMPA) in 2017–2027
research program in the frame of the research and monitoring associated with the RSRMPA. Russian research ... and stock structure of Dissostichus species in the eastern part of the Ross Sea over shelf and ... focus. The study area covered by proposed investigations is located in the Special Research Zone of the ... vessels from other CCAMLR country-members. Implementation of this program can be started in the ...
Meeting Document : WG-SAM-17/21 : Autor(es): Delegation of the Russian Federation
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Research program to examine the life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region marine protected area (RSRMPA) in 2018–2027 by Russian Federation
research program in the frame of the research and monitoring associated with the Ross Sea region marine ... movement, biological parameters and stock structure of Dissostichus species in the eastern part of the Ross ... tagged fishes to be in focus. The study area is located in the Special Research Zone of the RSRMPA ... life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross ...
Meeting Document : WG-SAM-18/07 : Autor(es): Delegation of the Russian Federation
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Research program to examine the life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region marine protected area (RSRMPA) in 2018–2027
research program in the frame of the research and monitoring associated with the Ross Sea region marine ... movement, biological parameters and stock structure of Dissostichus species in the eastern part of the Ross ... tagged fishes to be in focus. The study area is located in the Special Research Zone of the RSRMPA ... life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross ...
Meeting Document : WG-FSA-18/33 Rev. 1 : Autor(es): Delegation of the Russian Federation
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Size variations associated with abundance changes in juvenile Notothenia rossii observed at Potter Cove, South Shetland Islands, since the end of the fishery in the area
mean size without any significant trend. In addition, the 1991 abundance data of fjord N. rossii and N ... interpreted as a consequence of a significant reduction in the influx of the youngest age classes into inshore ... strongly associated with the last significant catches of fin-fish in the Subarea 48.1 in 1979/80 and could ... also be related to the still undetermined incidental mortality of larvae and juvenile in the krill ...
Meeting Document : WG-FSA-91/13 : Autor(es): E. Marschoff and E. Barrera-Oro (Argentina)
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Research program to examine the life-cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region Marine Protected Area (RSRMPA) in 2017–2027
program in the frame of the research and monitoring associated with the RSRMPA. Russian research program ... stock structure of Dissostichus species in the eastern part of the Ross Sea over shelf and continental ... study area covered by proposed investigations is located in the Special Research Zone of the RSRMPA ... to examine the life-cycle and resource potential of Dissostichus species in the Special Research Zone ...
Meeting Document : WG-FSA-17/26 : Autor(es): Delegation of the Russian Federation
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Size variations associated with abundance changes in juvenile Notothenia rossii, observed at Potter Cove, South Shetland Islands, since the end of the fishery in the area
rossii, in association with changes in the size and age structure of the juvenile population. Mean ... indicating the beginning of a recovery of the N. rossii population in Potter cove. Author(s): E.R. Marschoff ... Notothenia rossii, observed at Potter Cove, South Shetland Islands, since the end of the fishery in the area ... with similar ecological habits in the fjords, showed little variations around the expected overall mean ...
Meeting Document : WG-FSA-93/13 : Autor(es): E.R. Marschoff and E.R. Barrera-Oro (Argentina)
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The morphology of Antarctic toothfish (Dissostichus mawsoni Norman 1937) males and females and new data on its gonad structure in the Ross Sea in the summer period
state of toothfish testes has been made, and the abnormal primary fusion renal and generative tissues in ... Abstract: The results of the histological analysis of the Antarctic toothfish (Dissostichus ... 88.2 of the Ross Sea are presented. The morphological parameters and indices of maturity have been ... described. The histological criteria of the assessment of the ovary maturity stages, cytological parameters ...
Meeting Document : WG-FSA-07/38 Rev. 2 : Autor(es): S.V. Piyanova and N.V. Kokorin (Russia)