Résultats de la recherche
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ON INCIDENTAL MORTALITY OF ANTARCTIC KRILL AT KRILL FISHERY
Abstract: Analysis of the Antarctic krill (Euphausia superba) commercial and research fishery in ... 1970-ies and 1980-ies showed that different modifications of midwater trawls applied had comparatively ... 40-50% of the «percolated» individuals were injured, at the same time while «punched» through small ... meshes of the trawl codend 60 to 100% of individuals perished. There are two main aspects of this problem ...
Meeting Document : WG-EMM-09/11 : Auteur(s): L. Pshenichnov (Ukraine)
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LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA
Abstract: This study uses a histological assessment of age and length at spawning for female and ... fishing seasons. The female spawning ogive incorporates the proportion of sexually mature fish that do not ... management decision rules. A characterisation of the oocyte developmental cycle of Antarctic toothfish shows ... vitellogenic phase over at least a 6–12 month period, resulting in a developed batch of oocytes accumulating at ...
Meeting Document : WG-FSA-09/37 : Auteur(s): S.J. Parker and P.J. Grimes (New Zealand)
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OCEANIC CIRCUMPOLAR HABITATS OF ANTARCTIC KRILL
Abstract: Surveys of Euphausia superba often target localised shelves and ice edges where their ... , with 70% of the total stock concentrated between 0o and 90oW. Within this Atlantic sector, krill are ... inner shelf whereas in the Indian-Pacific sectors krill prevail in the ocean within 200-300 km of the ... shelf break. Overall, 87% of the total stock live over deep oceanic water (>2000 m) and krill occupy ...
Meeting Document : WG-EMM-08/P04 - Abstract : Auteur(s): A. Atkinson, V. Siegel, E. A. Pakhomov, P. Rothery, V. Loeb, R.M. Ross, L.B. Quetin, K. Schmidt, P. Fretwell, E.J. Murphy, G.A. Tarling and A.H. Fleming
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Establishment of a CEMP monitoring program at Bouvetøya
western coast of the island during the 1996/97 field season. Species included in the monitoring program ... (1996/97), monitoring of the following parameters were initiated for the two species of penguins ... : Breeding population size CA3), Age-specific annual survival and recruitment (A4), Duration of foraging ... Seal, the.. program includes monitoring of Duration of cow foraging/attendance cycles (C 1) and Pup ...
Meeting Document : SC-CAMLR-XVI/BG/04 : Auteur(s): Delegation of Norway
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A comparison between the estimated density of krill from an acoustic survey with that obtained by scientific nets on the same survey
Abstract: This work presents the initial comparative analysis of acoustic and net haul krill ... part of a hydroacoustic biomass survey for Antarctic krill in CCAMLR Division 58.4.1. The acoustic ... found between the two data sets. Several orders of magnitudes were seen in the range of variation ... , excluding sites where krill represented less than 90% of the catch. This reduction in variation was thus ...
Meeting Document : WG-EMM-97/43 : Auteur(s): Pauly, T., Higginbottom, I., Hosie, G., de la Mare, W.K., Nicol, S.
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On the accuracy of the pellet analysis method to estimate the food intake in the Antarctic shag Phalacrocorax bransfieldensis
Abstract: The accuracy of correction factors estimated to compensate the digestion and loss ... through the gastrointestinal tract of the otoliths of fish represented in pellets of the Antarctic Shag ... Phalacrocorax bransfieldensis was tested at two localities of the South Shetland Islands. F or such purpose, the ... results from the analysis of 226 and 115 pellets collected at Harmony Point and at Duthoit Point ...
Meeting Document : WG-EMM-97/61 : Auteur(s): Casaux, R.
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Preliminary results on by-catch of fish during krill fishery in March to May 1993 on the polish trawler M/T Lepus
Abstract: From the end of March to the beginning of May. 1993, during fishing operations for ... , investigations were• carried out to determine biological/fisheries characteristics of the exploited stocks. One ... of their goals was to determine the proportion of juvenile fish forms in krill concentrations. The ... present study gives the results of these observations. It appears from the investigations that the by ...
Meeting Document : WG-FSA-94/25 : Auteur(s): Z. Cielniaszek and R. Pactwa (Poland)
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Fisheries risks to the population viability of black petrel (Procellaria parkinsoni)
Abstract: Data on the main population of black petrel (Procellaria parkinsoni), which breeds on ... Great Barrier Island, were analysed. Three types of data were available. The most useful was abundance ... population. The mean age of first breeding for black petrel is estimated to be 6.7 y. Before this, new adults ... spend an average of 1.2 y in the colony as pre-breeders, with only 3% skipping the pre-breeder phase. Of ...
Meeting Document : WG-SAM-10/P01 : Auteur(s): R.I.C.C. Francis and E.A. Bell (New Zealand)
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An investigation of integrated stock assessment methods for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
primarily based on the 2005 assessment implemented in the Generalised Yield Model (GYM) using survey data of ... the abundances of juvenile fish but adding fishery catch-at-length data, including a standardised ... catch-per-unit-effort (CPUE) series. The base-case scenario was then extended to include estimates of ... between estimating natural mortality and selectivity for the different fisheries. The results of this work ...
Meeting Document : WG-FSA-SAM-06/14 : Auteur(s): A. Constable, S. Candy and I. Ball (Australia)
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The first site of the Marine Protected Area network in the Akademik Vernadsky Station region: Argentine Islands, Skua Creek
a series of documents with a proposal to establish Marine Protected Area (MPA) in the Akademik ... Vernadsky Station area with the purpose of protecting natural and geographical objects and establish test ... areas of special scientific interest. We present the results of the first steps in creation of Marine ... Protected Area network in Argentine Island Archipelago region. Author(s): Delegation of Ukraine Title: The ...
Meeting Document : WG-EMM-12/25 : Auteur(s): Delegation of Ukraine