Результаты поиска

1. Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994

   Abstract:  The diet composition of the icefish Champsocephalus gunnari caught in the Subarea 48.3 ... in February/March 1994 was analyzed using the frequency of occurrence (%) method. Krill (Euphausia ... and Shag Rocks; fish were found in the stomachs more frequently than in past seasons around South ... Georgia, in parallel with the virtual absence of mysids and Thysanoessa spp.. Krill was available for fish ...

   Meeting Document : WG-FSA-94/27 : Автор(ы): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)

2. Reproduction in Antarctic notothenioid fish - a review

   Abstract:  Abstract: Gonad maturation in Antarctic notothenioid fish is a biennial process ... gunnari in the Atlantic Ocean sector do not spawn each year. Gonadosomatic index (GSI) of females is 15–40 ... –20% of that of females. Length at first spawning may be from 55% of Lmax onwards, but in many species ... Zone are autumn/winter spawners, whereas in the High-Antarctic Zone more species spawn in summer and ...

   Meeting Document : SC-CAMLR-X/BG/12 : Автор(ы): Delegation of Germany

3. Proposal for an extension to the mark-recapture experiment to estimate toothfish population size in the South of Subarea 48.4

   Abstract:  A three‐year tagging study in the South of Subarea 48.4 was initiated in the 2008/09 ... , size, movement and growth of both Dissostichus eleginoides and Dissostichus mawsoni in the South of ... 48.4; A total of 186 D. eleginoides and 202 D. mawsoni were tagged and released in 2010, leaving a ... total of 794 tagged fish in the water, respectively. A total of 13 D. eleginoides and 22 D. mawsoni were ...

   Meeting Document : WG-FSA-10/40 : Автор(ы): J. Roberts and D. Agnew (UK)

4. Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2014–15

   Abstract:  We provide an update of the descriptive analyses of the toothfish tagging programme in ... and 2473 recaptured, and 1191 Patagonian toothfish released and 103 recaptured since 2001. In recent ... catch in the Ross Sea region. Tag recapture data showed that most fish are recaptured only a short ... . The 308 recaptures in the Ross Sea region in 2014 was the highest observed, which then reduced to 183 ...

   Meeting Document : WG-FSA-15/37 : Автор(ы): S.J. Parker and S. Mormede (New Zealand)

5. Progress towards an assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 882C–H for the years 2002/03 to 2017/18 using a two-area model

   Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea region, defined here as SSRUs 88.2C–H. The ... were first developed for the region in 2014 and refined in 2015 and 2016. Results showed the need to ... collect mark-recapture data in the South to inform the estimation of biomass in the South. Simulation work ... undertaken in 2017 showed that if tag recaptures continued in the south, and were spread among research ...

   Meeting Document : WG-FSA-18/37 : Автор(ы): S. Mormede and S. Parker

6. Characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) through 2018/19

   Abstract:  This report summarises fishing catch and effort in the Ross Sea region (Subarea 88.1 ... the 2019 season. The implementation of the Ross Sea Region Marine Protected area in December of 2017 ... distributions showed no trends in the different management areas; interannual variability is likely driven by ... spatial patterns in fishing. The strongest time trend in the data is the change in the sex ratio over time ...

   Meeting Document : WG-FSA-2019/07 : Автор(ы): J. Devine, S. Parker and A. Dunn

7. Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2003 winter and 2003/04 breeding season

   Abstract:  In the fourteenth consecutive winter of the survey at Bird Island, South Georgia, the ... classified as severe (71%). In contrast the sixteenth consecutive summer of reporting saw a decrease of 45 ... made in 1989. Severe injuries accounted for only a single entanglement during the summer. As in ... previous years, most individuals observed entangled in debris were juveniles (79% of winter and 55% of ...

   Meeting Document : SC-CAMLR-XXIII/BG/14 : Автор(ы): Delegation of the United Kingdom

8. Shedding new light on the life cycle of mackerel icefish in the Southern Ocean

   Abstract:  Mackerel icefish (Champsocephalus gunnari) has a widespread distribution in the ... considerably between populations in the southern Scotia Arc and those living further to the north. Fish living ... in the north mature one year earlier than in the south. They have a much shorter life span and die ... in the north. Stocks have declined in most parts of the distributional range due to the impact of ...

   Meeting Document : WG-EMM-03/4 : Автор(ы): K.-H. Kock (Germany) and I. Everson (United Kingdom)

9. BIOLOGICAL PROSPECTING IN THE SOUTHERN OCEAN, A ROLE FOR CCAMLR

   established to examine the issue of Biological Prospecting in the Antarctic Treaty Area. Although increasingly ... used in International legal and policy frameworks addressing genetic resources, the term bioprospecting ... is not defined in any international convention or agreement. Indeed, there remains a range of views ... in the literature and in policy circles as to what bioprospecting involves. Definitions differ ...

   Meeting Document : CCAMLR-XXVII/BG/36 : Автор(ы): Submitted by IUCN

10. Variations in food composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia

    ) around Shag Rocks and the mainland of South Georgia was investigated in January/February 1985, January ... superba), the hyperiid Themisto gaudichaudii, mysids and in 1985 also Thysanoessa species. The proportion ... of krill and Themisto in the diet items varied considerably between the three seasons, whereas the ... proportion of mysids in the diet remained fairly constant. krill is obviously the prefered diet. In years of ...

    Meeting Document : WG-FSA-92/26 : Автор(ы): K.-H. Kock (Germany), I. Everson (United Kingdom), S. Wilhelms (Germany), S. Campbell (United Kingdom), J. Szlakowski (Poland), G. Parkes (United Kingdom), Z. Cielniaszek (Poland) and C. Goss (United Kingdom)

Страницы