Search results

1. Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season

   , foraging trip duration and diet suggests that the death of chicks during the guard stage was due ... , foraging trip duration and diet suggests that the death of chicks during the guard stage was due ... suggests that the death of chicks during the guard stage was due to an inadequate rate of food supply ... determined using an Automated Penguin Monitoring System (APMS) which records the dates and times on which ... , packaged by Sirtrack (New Zealand) and weighing a total of 90 g. Transmissions were detected by NOAA ... as 'local' trips was identified as an outlier (Student-Newman- and those extending beyond 80 km as 'distant ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Author(s): Irvine, L.G., J.R. Clarke and K.R. Kerry

2. Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study

   18 29 13 04 0. 71 19 92 / 93 33 62 14 85 11 90 0. 80 19 93 / 94 35 ... 4 + to 1 3+ y ea rs o f a ge 19 91 / 92 76 58 76 .3 1 19 92 / 93 11 2 90 80 ... probabilities of detection (>90% of penguins that survive to 6 years of age have been resighted by age 4 years ... chicks per female per year (Table 5). On the assumption that the ratio of male to female chicks raised ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Author(s): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry

3. Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies

   WG-FSA-90/23 MESOPELAGIC FISH OF THE SOUTHERN OCEAN ... assessment should thus be attempted for each species separately. As mentioned above, spawning and feeding ... correspond to diurnal vertical migration. In the down fish migrate up to the surface layer of 80 to 140 ... tonnes. About 90% of control catches was found to consist of E. carlsbergi (Filin et al., 1991). Density ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Author(s): Sabourenkov, E.N.

4. Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias

   Date A du lt av ai la bi lit y ad ju st m en t f ac to r 100 80 60 40 20 0 C ou nt ... to be adjusted by some date- or stage-specific factor if the count is to form the basis of an estimate of some ... to adjust counts of penguins at their breeding sites with date- or stage-specific factors is related ... and Sinclair, 1989) to refer to counting bias that results from animals that are completely obscured from ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Author(s): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery

5. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

   Male MaylJune 1997 Male JulylAugust 60 70 80 90 100 110 120 130 Length (cm) Figure ... 1996 Female July 1997 Female JulyIAugust 60 70 80 90 100 110 120 130 Length (cm) 60 70 80 90 100 ... on the reproductive cycle. This was highlighted at the 1997 meeting of the CCAMLR Working Group on Fish Stock ... . I L,,, spawners / Proportio n l spawning Figure 1: Diagrammatic representation of a situation whereby only 80 ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Author(s): Everson, I. and A.W. Murray

6. Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea

   ; the third is proportional to the estimated standing stock of krill in each SSMU; and the fourth is pro por ... and parameter estimates As no SSMUs for Subarea 48.4 have been adopted by the Commission to date, this study ... 2.514 –4.441 1988/89 45.1 5357 no data 82.4 2.491 no data 1989/90 45.1 5344 –4.364 17.1 2.592 –4.526 ... (80%) would be apportioned to the three pelagic SSMUs. Development of option (v) requires ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Author(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins

7. Low genetic diversity in the Antarctic toothfish (Dissostichus mawsoni) observed with mitochondrial and intron DNA markers

   removed from individual fi sh sampled for routine biological analyses and fi xed in 90% ethanol. DNA ... A ~0.7 kb fragment including the 3’ end of the cytochrome b gene, tRNA-Thr, tRNA-Pro, and a 5’ fragment ... edited in CHROMAS (Technely- sium, Australia), and aligned in the BIOEDIT pro gram (Hall, 1999). Tests ... - plicon between primers) obtained from D. mawsoni exhibited 90.1% identity to D. eleginoides (Kuhn ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 43–51 : Author(s): Smith, P.J. and P.M. Gaffney

8. Telemetry monitoring of ecological resources

   on the chart. To meet the need to monitor more animals and eliminate the need to adjust the receiver gain ... application was location monitoring of animals in the mid 1960s. Monitoring activity has steadily increased ... to an animal and the animal then relopated using a directional antenna and receiver2. Data are usually ... mortality. In this case a clock is reset with each switch closure. If the animal is not active the clock ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 495-511 : Author(s): Kuechle, V.B.

9. Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors

   . In this paper the authors present an analysis relating to both these challenges. Clutch initiation dates ... these challenges. Clutch initiation dates for four penguin breeding sites are examined (Cape Shirreff, Admiralty ... the authors present an analysis relating to both these challenges. Clutch initiation dates for four penguin ... reproduction. Dans cet article, les auteurs présentent une analyse qui relève ces deux défis. Ils examinent ... les dates du début des couvées en quatre sites de reproduction de manchots (cap Shirreff, baie de ... facteur le plus significatif par rapport à la date du début de la couvaison est systématiquement ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Author(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece

10. Foraging behaviour and reproductive success in chinstrap penguins: the effects of transmitter attachment

    animals may significantly alter their behaviour, leading to biased parameter estimates (e.g., Wilson et ... in behaviour of the study animal through the effects of increased drag (Wilson et al., 1986) or the discomfort ... the use of animal-borne devices to collect behavioural information. Unfortunately, in many instances (e.g ... because comparable dive data from non-instrumented animals are rarely available. However, some parameters ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 291–303 : Author(s): Croll, D.A., J.L. Bengtson, P.L. Boveng, M.E. Goebel and J.K. Jansen

Pages