Search results
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Additional data on anti-Brucella antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica
tagged after sampling, as in the previous studies, and all of them were apparently healthy animals ... dying shortly after birth and non-pregnant females), have been observed in animals from the same ... Shirreff, Livingston Island, Antarctica Abstract / Description: The first instance of anti-Brucella ... antibodies in the Southern Hemisphere was recorded in two pinniped species from Antarctica: Antarctic fur ... fluid) were tested using the Rose Bengal (RB) test, the Competitive Enzymoimmunoassay (c-ELISA) test and ... the Competitive Enzymoimmunoassay 'COMPELISAO®' test. Antibodies against Brucella spp. were ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 147–154 : Author(s): Blank, O., P. Retamal, P. Abalos and D. Torres
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Sources of variance in studies of krill population genetics
a reference that was also run on another gel to allow comparisons between gels. After electrophoresis, one ... that one fragment remained after restriction digestion, were also sequenced. 10 μL of PCR amplifi ed DNA ... : There has been a long-term interest in the population genetics of Antarctic krill species because of ... their ecological and economic importance. The possibility that there are distinct genetic stocks of ... these species would affect the design of management strategies for their conservation. A recent ... resurgence of interest in identifying distinct stocks of swarming krill species has been driven by the ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 107–116 : Author(s): Jarman, S.N. and S. Nicol
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Mitigation of seabird captures during hauling in CCAMLR longline fisheries
, it consists of a single rope with a buoy or 25 l oil canister and streamers attached to the seaward end ... joined by rope, one forward and one aft of the hauling point (Figure 3). At the seaward end of the boom ... as 1994/95 when steps were taken to reduce the attraction of seabirds to vessels during the hauling ... process. Since 2003, increased efforts have been made to improve the design and performance of bird ... exclusion devices (BEDs) placed around the hauling bay. Data collected by scientific observers since 2003 ... seabirds landing adjacent to the line as it is being hauled, and secondly that seabirds are deterred from ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 155–162 : Author(s): Reid, E., B. Sullivan and J. Clark
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Scientific observations in CCAMLR fisheries – past, present and future
). To this end the Scientifi c Committee keeps the priorities, standard sampling procedures and types of data ... at the end of each fi shing trip and email them to the CCAMLR Secretariat3. This is important because ... measures including delaying the commence- ment of fi shing until the end of the breeding season for most ... / Description: CCAMLR has the primary competency for managing fishing south of the Antarctic Polar Front ... -independent studies are difficult and expensive to conduct. In addition, the size of the Convention Area, its ... remoteness and prevailing inclement weather further complicate matters. Therefore, in addition to the ... standard catch and effort data supplied by vessels, the collection of data by scientifically qualified ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 81–98 : Author(s): Sabourenkov, E.N. and E. Appleyard
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Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries
using pure error, F43, 113 = 2.928, P < 0.01. This is especially evident at the upper end of the size ... at the upper end of the size spectrum. Marriott and Horn (2001) also found differences in growth rate ... end of each bin. 0 5 10 15 20 25 30 200 250 300 350 400 450 500 550 600 650 700 Total length ... McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... growth parameters for both sexes combined were: L ∞ = 690 mm, K = 0.069 and t 0 =-2.4. The size at sexual ... operations in the Heard Island region in 2000. The length at first maturity (L 50) was 418 mm (total length ... ) and the length at first spawning (L m 50) was 511 mm (total length), for both sexes combined. The ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Author(s): van Wijk, E.M., R. Williams and A.J. Constable
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Sexing of adult Adélie penguins by discriminant analysis of morphometric measurements
but during the breeding season they can be applied only after egg-laying. In many studies it would ... determine the sex of Adélie penguins. A sample of 46 adult birds was taken for measurement from the breeding ... population at Stranger Point (King George/25 de Mayo Is., South Shetland Islands). The sex of each bird had ... been determined earlier by means of observing the birds' breeding behaviour (first incubation ... shift). It was found that the combination of flipper breadth, bill depth and length of the middle toe ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 543–549 : Author(s): Scolaro, J.A., Z.B. Stanganelli, H. Gallelli and D.F. Vergani
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Estimates of fish stock biomass around South Georgia in January/February 1985
in the catches at the end of the 1970s has been observed compared to 1975/76 - 1977/78 (SLOSARCZYK et al ... and Ps . georgianus i n 1981/82 were close t_o _le1_1_g_th at sexual ma turity after_ 6 or 7 years ... for 1975/76. Similar values had, however, been found already at the end of the 1970s in Polish surveys ... estimate stock sizes of the commercially exploited Notothenia rossii, N. guntheri, N. gibberifrons ... around South Georgia. Due to the small data base and the scarcity of comparative information the state of ... N. guntheri and D. eleginoides stocks is difficult to assess. The by-catch species N. gibberifrons ... , Ch. aceratus and Ps. georgianus have been considerably affected by the fishery. Stock sizes of N ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Author(s): Kock, K.-H.
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Differentiation of independent populations of Antarctic krill
) population of E. superba" (Makarov, 1972). In a later paper (Makarov, Maslennikov, 1975) after ... circulation. On the basis of the review, it is suggested that there is probably one composite population of E ... . superba in the Southern Ocean subdivided into several independent sub-populations. The number of these sub ... -populations is expected to correspond with the number of quasi-stationary cyclonic water circulations. At ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Author(s): USSR
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Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica
in February 1991 showed that on most occasions the biomass of benthos in the codend after a 30 minute trawl ... demersal finfish species in Prydz Bay by Australia in the 1990/91 season. The data collected are used to ... examine a potential impact of bottom trawling on benthic communities in this region. The benthos was ... examined in trawls at 14 of the 22 random stations providing representative samples from different areas in ... the Prydz Bay. All benthos in the codend was sorted into major taxa and wet-weighed. The composition ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Author(s): Constable, A.J.
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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
- est at 120 kHz. After removing the interference noise, the echograms of all the three frequencies ... window after thresholding. For example, some interference noise was still evident at depths below 200 ... from Antarctic krill fishing vessels Abstract / Description: The use of fishing-vessel-based acoustic ... data has been recognised as an important way to estimate the distribution and relative abundance of ... Antarctic krill (Euphausia superba), yet the quality and even the utility of the data may be seriously ... degraded by interference noise due to the lack of synchronisation of the acoustic instruments found on some ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Author(s): Wang, X., J. Zhang and X. Zhao