Search results
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Sources of variance in studies of krill population genetics
stocks of these species would affect the design of management strategies for conserving them. A recent ... would affect the design of management strategies for conserving them. A recent resurgence of interest ...
Meeting Document : WG-EMM-01/12 : Author(s): S.N. Jarman and S. Nicol (Australia)
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CCAMLR Statistical Bulletin, Vol. 25 data files
Description / Abstract: CCAMLR Statistical Bulletin data files in csv/text format. Catch and effort data (STATLANT data) CCAMLR_2013_Statistical_Bulletin_Volume_25_SBeffort.txt CCAMLR_2013_Statistical_Bulletin_Volume_25_SBcatch.txt Landings and trades of toothfish (aggregated CDS data) CCAMLR
Document : Site Section: Data
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Preliminary assessment of Champsocephalus gunnari on the Heard Island Plateau (Division 58.5.2) based on a survey in May 2002
of mostly three and four year old fish in May 2002. Given the size of the fish, the expectation from current ... estimates of length at age parameters would be for most of the fish to be three year olds. However, given ... the abundance of fish in the population and the age structure of fish last year, it would be more reasonable ... to conclude that most of the fish are four years old, as this age class comprised the larger fraction (93 ...
Meeting Document : WG-FSA-02/47 : Author(s): A.J. Constable, R. Williams and T. Lamb (Australia)
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Target strength of mackerel icefish (Champsocephalus gunnari) from a scattering model
cm, at 38 kHz. The model used computed tomography (CT) scans of fish to determine the sound speed ... and density throughout the fish and simulated the complex interaction of the incident sound wave ... with the acoustic impedance contrasts throughout the fish. A preliminary length to tilt-averaged TS relationship ... is derived from the model results: 148)(log4.7010-=LTSwhere L is the fish total length in cm ...
Meeting Document : SG-ASAM-09/06 : Author(s): G. Macaulay (New Zealand)
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Unnatural selection of Antarctic toothfish in the Ross Sea, Antarctica
mode is to target the oldest, largest, most fecund fish, theoretically to increase the number ... and growth rate of smaller fish. The literature is reviewed to reveal why this strategy has failed ... in the past for fisheries taking long-lived, late maturing benthic fish. Not only have there been ecological ... effects of removing large fish but such fisheries, in a process called longevity overfishing, has ...
Meeting Document : WG-FSA-12/P05 : Author(s): D.G. Ainley, C.M. Brooks, J.T. Eastman and M. Massaro
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The food and feeding of five species of icefish in the Elephant Island – South Shetland Islands Region in March 2003
fed on krill and fish with some differences found between Elephant Island and the South Shetland ... Islands. The bulk of the diet of C. rastrospinosus consisted of krill and fish. Diet intensity, however ... , was low due to the progressing spawning season. C. antarcticus took almost entirely fish while ... P. georgianus was a fish feeder at Elephant Island and preyed on krill and fish further south. A large ...
Meeting Document : WG-FSA-03/60 : Author(s): K.-H. Kock, H. Flores (Germany), C.D. Jones (USA), S. Wilhelms and S. Schöling (Germany)
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Reports on abundance and biological information on toothfish in Divisions 58.4.4a and 58.4.4b by Shinsei Maru No. 3 in 2011/12 season
fish) of Dissostichus eleginoides was 28.3 tonnes in the survey area in 70 longline sets, contributing ... 91.3 % to the total fish catch (31 tonnes). Mean CPUEs of D. eleginoides was in the SSRUs were 6.7 ... of size between the fish released with tag and that of overall catch was high (θ=81 %). Fish with good ... physical condition and single-hooked contributed 50 % to the total among fish caught by Spanish line system ...
Meeting Document : WG-SAM-12/16 : Author(s): K. Taki, T. Iwami, M. Kiyota and T. Ichii (Japan)
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Revised reports on abundance and biological information of toothfish in Division 58.4.4 a & b by Shinsei maru No. 3 in 2012/13 season
higher in 2011 but showed no clear tendencies with the years in SSRU C. Fish in single-hooked and good ... that larger fish > 140 cm are more damaged than smaller ones, which is consistent with the results in 2011 ... /12 season. The possible maximum tagging rate was calculated to be 30.1 fish per tonnes and 23.5 fish ... per tonnes in SSRUs C and D, respectively. Accordingly sufficient numbers of fish suitable for tagging ...
Meeting Document : WG-FSA-13/34 : Author(s): K. Taki, T. Ichii, T. Iwami and M. Kiyota (Japan)
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TARGET STRENGTH STUDIES ON ANTARCTIC SILVERFISH (PLEURAGRAMMA ANTARCTICUM) IN THE ROSS SEA
: 1) theoretical, 2) ex situ measures on dead or living fish under experimental conditions, 3) in situ measures ... on free swimming fish in their natural habitat. A canvassing of the literature suggested that the type ... of study may influence the result. For example, some authors suggested that freezing the fish reduce ... the over-all backscatter of 30% (Sun et al. 1985), others that TS measurements on living fish ex situ would ...
Meeting Document : SG-ASAM-09/10 : Author(s): M. Azzali, I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi (Italy)
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WG-FSA-06/5
, collecting the data on biology of the object fishery and techniques of the fishery. As the gear of fishing ... of deepwater fish stocks its modification, a deep-water longline, appeared. Thus, now depending on the area ... ": for fishing on the shelf (at the average depths of about 125-130 m) and on the continental slope (from 250 ... down to 550 м). The scheme of a longline of the "spanish type" for fishing on European hake in shelf ...
Document : Site Section: Publications