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Foraging behaviour and reproductive success in chinstrap penguins: the effects of transmitter attachment
, South Shetland Islands. In total, one member of each pair at 20 nests and both members of each pair at ... Paper Title: Foraging behaviour and reproductive success in chinstrap penguins: the effects of ... method with which to monitor foraging trip duration in penguins by the CCAMLR (Commission for the ... failure, and reproductive success in chinstrap penguins; (ii) differences in these parameters when ... 666 nests on Seal Island, South Shetland Islands. In total, one member of each pair at 20 nests and ... in behaviour of the study animal through the effects of increased drag (Wilson et al., 1986) or the ... control group was followed from 29 December 1990 until 30 January 1991 (12 nest-check dates) and in the ... 20 mm diameter by 55 mm length, 25 g, respectively). It is possible that the increase in foraging ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 291–303 : Autor(es): Croll, D.A., J.L. Bengtson, P.L. Boveng, M.E. Goebel and J.K. Jansen
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Trawl bag selectivity in the Champsocephalus gunnari fishery
from previous years demonstrates close similarity. A significant increase in modal length (up to 34-35 ... Paper Title: Trawl bag selectivity in the Champsocephalus gunnari fishery Abstract / Description ... were carried out in June 1990 in the South Georgia area concurrently with trawl surveys as part of the ... recommended in order to fully understand the mechanism involved. File: 18-Bidenko-and-Istomin.pdf ... AND AREA Selectivity hauls were made from 17 to 20 June 1990 in an area having the mean coordinates ... - 7 19 - 16 20 30 38 21 - 20 22 - 20 23 - 24 24 38 64 25 534 373 26 1436 866 27 2984 1430 28 ... WG-FSA-90/32 TRAWL BAG SELECTIVITY IN THE ... selectivity during fishing on pre-spawning concentrations of ChampsocephaZus gunnari were carried out in June ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 295–312 : Autor(es): Bidenko, V.G. and I.G. Istomin
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Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... Paper Title: Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 ... inadequate rate of food supply. In most previous seasons adults have foraged both at the continental shelf ... reduced feeding frequency. These findings contrast with observations made in 1994/95 (a season in which ... trips and both sexes spent longer at sea than in years of higher breeding success. Meal masses brought ... 1998/99 season did not differ from other years except for the period from 25 February to 1 March in ... durations in 1998/99 were greater than all years Irvine et a1 Table 3: Mean foraging trip durations ... significantly greater in 1998/99 than in two of the years with higher breeding success (p < 0.05), and the ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Autor(es): Irvine, L.G., J.R. Clarke and K.R. Kerry
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2004 winter and 2004/05 breeding season
% compared to last year; the lowest number of entanglements recorded since 1989. As in previous years, most ... 64% from last year. For the first time since records started in 1990, none of the injuries were ... Abstract: The number of entanglements in the fifteenth consecutive winter surveyed, decreased by ... individuals observed entangled in debris were juveniles (80% of winter and 50% of summer observations). Of the ...
Meeting Document : SC-CAMLR-XXIV/BG/16 : Autor(es): Delegation of the United Kingdom
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Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region
, despite substantial catches in the first four years of the fishery and ample opportunity to sample these ... catches. The only scientific surveys of these stocks during these years were conducted by Germany in 1985 ... evidence of illegal fishing since the closure of the region some 10 years ago. Differences in length-weight ... takes one year or more, whereas in others gonad maturation was completed within one season. Length at ... 1998, despite substantial catches in the first four years of the fishery and ample opportunity to ... taken in substantial numbers in single years. The fishery was extended to the island shelves of the ... for some years in the late 1980s. Since the early 1990s, the fishery was almost exclusively a ... ) in 30 fresh oocytes per individual was measured under a dissecting microscope at a magnification of ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Autor(es): Kock, K.-H., C.D. Jones and S. Wilhelms
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Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic
Paper Title: Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in ... eleginoides) was investigated in two offshore regions in the southwestern Atlantic: on the Argentinian ... continental shelf/slope between 46°-55°S and 60°-64°W, and around South Georgia between 53°-55°30' and 3 ... Argentinian continental shelf/slope, the length of D. eleginoides ranged from 30 to 95 cm total length (TL ... . Its geographic distribution ranges from 30"s in the Pacific, to the north of Chile, to Cape Horn ... main line of 20 000 m, with branch lines each with 90 hooks (model 'Ancora', 30 mm gap) spaced at 1 m ... krill, present only in zone SG1, this was 20%F, while cephalopods ranged from 1 to 15%F. Another prey ... of cephalopods (40%F) and Natantia crustaceans (20%), a prey item which is absent in the remaining ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Autor(es): García de la Rosa, S.B., F. Sánchez and D. Figueroa
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Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
about 370–400 mm TL and 6–8 years of age. Counts of growth zones in sectioned otoliths were used to ... Paper Title: Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea ... Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (CCAMLR Subareas 88.1 and 88.2). Biological data ... Chionobathyscus dewitti, and showed no significant difference in sex ratio. Meristic, diet and age data were ... years of age. Counts of growth zones in sectioned otoliths were used to determine ages and von ... ages ranging between 5 and 11 years. The greater age range observed in the current study is likely to ... BIOLOGICAL PARAMETERS FOR ICEFISH (CHIONOBATHYSCUS DEWITTI) IN THE ROSS SEA, ANTARCTICA C.P. Sutton ... ) in the Ross Sea (CCAMLR Subareas 88.1 and 88.2). Biological data from 303 specimens were collected ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Autor(es): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott
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A preliminary assessment for mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2019 random stratified trawl survey
in the 2019/20 season and 406 t in the 2020/21 season, respectively, satisfied the CCAMLR decision ... , abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... Abstract: The annual random stratified trawl survey was undertaken in Division 58.5.2 in the ... Generalized Yield Model). The 2019 survey showed a large 2+ and 3+ cohort in the population. Catches of 527 t ...
Meeting Document : WG-FSA-2019/02 : Autor(es): D. Maschette, G. Nowara and D. Welsford
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Additional data on anti-Brucella antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica
Paper Title: Additional data on anti-Brucella antibodies in Arctocephalus gazella from Cape ... antibodies in the Southern Hemisphere was recorded in two pinniped species from Antarctica: Antarctic fur ... first records, this paper describes additional data on Brucella antibodies in A. gazella obtained at ... detected in one sample with the RB test, and in five of the 86 samples (5.8%) using the c-ELISA test. These ... antibodies in A.rcfoceplzalus gazella. * - dead animal; RB - Rose Bengal test; COMPELISAB - Competitive ... abortion and infection in bottlei~ose dolphins (Tzrrsiops tnrncntus). J. Zoo Wild. Med., 30 (1): 100-110 ... ON ANTI-BRUCELLA ANTIBODIES IN ARCTOCEPHALLIS GAZELLA FROM CAPE SHIRREFF, LIVINGSTON ISLAND ... Medicina Preventiva Animal Facultad de Ciencias Veterinarias y Pecuarias Universidad de Chile Casilla ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 147–154 : Autor(es): Blank, O., P. Retamal, P. Abalos and D. Torres
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Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl
Paper Title: Krill distribution in the western Atlantic sector of the Southern Ocean during 1983 ... -Kidd midwater trawl Abstract / Description: In this paper we consider the results of three mesoscale ... Island. Surveys including from 158 to 202 stations were carried out by Soviet research vessels in the ... summer-autumn periods of 1983/84 and 1987/88 and in the spring-summer of 1984/85 using a grid of stations ... " 50" 45" 40" 35" 30" Figure 4: Krill diskibution (g/ l 000 m3) in strata 0 to 100 m, 20 January to ... needed to obtain such material. Previous surveys carried out annually over nearly 20 years covered only ... distribution (g / l 000 m3) in strata 0 to 100 m, 27 January to 16 March 1984. 60" 55" 50" 45" 40" 35" 30 ... currents (relative to the 1 000 dbar), 20 January to 9 March 1988. 60" 55" 50" 45" 40" 35" 30" Figure 7 ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Autor(es): Sushin, V.A. and K.E. Shulgovsky