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  1. Additional data on anti-Brucella antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica

    of populations. Such a problem could also influence the conservation risk status of the species affected ... Porpoises: tlze Visiral Guide ofA11 tlze World's Cetacea~zs. Dorling Sin one sample with the RB test, and in five of the 86 samples (5.8%) using the c-ELISA test. These ... results present serological evidence of Brucella infection in A. gazella. We suggest the utility of extra ... marine mammals. We highlight the importance of evaluating in the CCAMLR Working Group on Ecosystem ... Shirreff, Livingston Island, Antarctica Abstract / Description:  The first instance of anti-Brucella ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 147–154 : Author(s): Blank, O., P. Retamal, P. Abalos and D. Torres

  2. Distribution of mackerel icefish (Champsocephalus gunnari) (Channichthyidae) around South Georgia at various stages of its life cycle

    Parameters East North South West Shag Rocks Anchar Mean length (cm) 26.1 34.9 28.9 32.5 7–30/4/1990 Length ... Atlantida Mean length (cm) 26.8 31.8 29.6 31.5 32.3 1/4–27/5/1991 Length range (cm) 14–52 14–54 15–47 17–47 ... Mean length (cm) 26.7 27.1 32.5 31.7 24/4–23/5/1984 Length range (cm) 15–43 10–51 20–54 13–50 ... 2.19 3.96 2.79 Number of individuals 906 1 510 303 1 861 Gizhiga Mean length (cm) 33.6 36.8 37.1 31.4 ... cm in length) were mainly found in the southern part of the study area, immature fish (15–25 cm) in ... the east and southwest, and adults (25–39 cm) in the north. The distribution of C. gunnari changes ... vertical migrations. Variations found in the depth distribution of C. gunnari relate both to fish length ... South Georgia at various stages of its life cycle Abstract / Description:  The distribution of mackerel ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 49–69 : Author(s): Frolkina, Zh.A

  3. Survey design to estimate krill abundance during FIBEX

    be reported as mean volume back-scattering strength. 3. The depth, size and density of swarms should ... 1. Assuming that an unbiassed estimate of mean krill density can be obtained for each sampled transect ... ensures that major sources of variation are eliminated from the overall estimate of mean density ... for the region. 3. Randomisation ensures that (a) an unbiassed estimate of the variance of mean density ... methodology for assessing the abundance of krill. The survey design used in the southwest Atlantic study area ... of the FIBEX is described in this paper. Sampling involved the use of echo sounders for estimating ... krill abundance as well as collection of data on the size, density and distribution of krill swarms. In ... also collected. The study area was subdivided into several geographically distinct subareas in each of ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 253–263 : Author(s): Everson, I., I. Hampton and G.M. Jolly

  4. Editorial

    the Southern Ocean. In particular there is a suite of papers that address key aspects of improving ... of analysis of data gathered on fishing vessels to using trends in patents to predict the future for ... specialist groups as well as the more traditional peer-review process. The papers in this volume of CCAMLR ... fishing in the Convention Area. For example, in the case of toothfish there are papers that develop our ... . In particular there is a suite of papers that address key aspects of improving assessment of the ... analysis of data gathered on fishing vessels to using trends in patents to predict the future for krill ... well as the more traditional peer-review process. The papers in this volume of CCAMLR Science broadly ... reflect the important areas of research used to provide advice on the management of fishing in the ...

    Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 167 : Author(s): Editors

  5. Distribution of fish larvae at South Georgia: horizontal, vertical, and temporal distribution and early life history relevant to monitoring year-class strength and recruitment

    abundant near the coast, but rare in oceanic waters. During winter in the 265 m deep fiord of Cumberland ... East Bay the early stages of many species were found throughout the water column. In summer only four ... species of larvae were abundant, they were found in the upper 100 m of the water column, especially the ... . The findings are discussed in relation to surveys for sampling the early stages of fish at South ... the early life history stages of Antarctic fish at South Georgia are reported. In winter and summer ... , but rare in oceanic waters. During winter in the 265 m deep fiord of Cumberland East Bay the early ... stages of many species were found throughout the water column. In summer only four species of larvae ... were abundant, they were found in the upper 100 m of the water column, especially the top 2 m layer ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 105-141 : Author(s): North, A.W.

  6. Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)

    relationships are used in this work. The mean krill stock size in the Sodruzhestva Sea (to the south of 65°30 ... from 1978 to 1990. Mean biomasses in certain areas, where fish biomass was observed to be high, were ... in the area 61 to 63° was calculated for the first time. Mean kriU stock size (biomass) in the Kosmonavtov ... December to April). The values of mean daily diet of all fish species were taken from Pakhomov ... taking into account their distribution in the particular study area of Antarctica. Total fish stock was ... is 551 300 tonnes, fish will consume 960 000 tonnes of krill. Given the total krill biomass in the ... 58.4.2 (Kosmonavtov and Sodruzhestva Seas) Abstract / Description:  Current estimates of the level of ... then been extrapolated over all of Antarctica. According to these calculations the entire amount of ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Author(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk

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

    ImprovIng estImates of adélIe penguIn breedIng populatIon sIze: developIng factors to adjust one-off ... of breeding sites, and dif- ficulty accessing them at predictable times of the year, means that population ... was originally developed, its inclusion is a practical means of accounting for overall declines in the number ... presented for the collection and development of data to adjust counts of Adélie penguins made at any time in ... point one week after the peak in egg laying, consistent with Standard Method A3 of the CCAMLR Ecosystem ... illustrated using data collected at the Béchervaise Island CEMP site in 2007/08. Estimates of the breeding ... methods such as mark-recapture of individually tagged birds. Given the paucity of adjustment data in the ...

    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

  8. Detection and quantitative estimation of krill concentrations by hydroacoustic instruments

    of the acoustic cross-section (0) of shrimp calculated in relation to a mean length of 4.5 cm. As can be seen ... instruments Abstract / Description:  The limited capabilities of existing hydroacoustic instruments in ... in areas surveyed. The task of detecting surface concentrations of krill can be solved with the help ... capable of registering individual krill at a depth of 50–60 m while the vessel is in motion. According to ... expense of a rise in the acoustic power of emission. File:  06-Yudanov.pdf ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Author(s): Yudanov, K.I.

  9. Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles

    and abundance within the framework of the Convention on the Conservation of Antarctic Marine Living Resources ... record- ing showing a skua (Stercorarius sp.) flying at a constant height of5 m over the breeding ... of the skua overflight. This resulted in a mean duration of type III behaviour of 5.8 seconds (SD = 2.5 ... was similar to the control group. The mean number of activity types displayed by penguins ranged from 1.4 ... Abstract / Description:  The importance of unmanned aerial vehicles (UAVs) in remote sensing is rapidly ... potential effects of wildlife disturbance by fixed-wing UAVs are investigated. In austral summer 2014/15 ... , UAV overflights were conducted in the Adelié penguin (Pygoscelis adeliae) breeding colony at Point ... . Thomas (Western Shore of Admiralty Bay, King George Island, Antarctica, Subarea 48.1). The impacts of ...

    Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Author(s): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój

  10. A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies

    ), predicted substantially lower mean length-at-age for older ages compared to the VB curve fitted using VP ... using the MLPLB-estimated VB parameters were closer to, but still substantially higher than, the mean ... more realistic predictions of mean length-at-age for young fish. File:  03candy-etal.pdf ... (IWLS), predicted substantially lower mean length-at-age for older ages compared to the VB curve fitted ... weighted least squares (IWLS), predicted substantially lower mean length-at-age for older ages compared ... to, but still substantially higher than, the mean trend in observed AGR values with release length compared ... ) to the VB model is also given in order to give more realistic predictions of mean length-at-age for young ... , as implemented in CASAL (Bull et al., 2005; Hillary et al., 2006), require estimates of mean length-at-age ...

    Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Author(s): Candy, S.G., A.J. Constable, T. Lamb and R. Williams

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