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1. Status of krill target strength

   aggregations of live euphausiids and should not be affected by a frequent cause of bias in single-animal ... on both animal size and transmit frequency, notwithstanding admitted shortcomings. Some recent single ... -animal measurements of target strength for live euphausiids and euphausiid-related species, made under ... number density were performed at 30 and 20 kHz. Measurements at 30 kHz were performed near Bouvet Island ... scattering features (outer boundary of the animal) change slowly along its lengthwise axis. However, one ... of animals, ka, where a is the cylindrical radius of the animal, spanned the values of two to six ... effects discussed earlier in this article and differences in animal type), the structure exhibited in the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Автор(ы): Foote, K.G., D. Chu and T.K. Stanton

2. Chilean krill fishery: analysis of the 1991 season

   100 co ...r 90 ctl Q) "- 80 ctl .0 ::J 70 Cl) 60 E 0 '-....... 50 .c () 40 ro () 30 ... °S, 59°13'W. This patch was fished for another two days yielding 264 tonnes (CPUE = 9.3 tonnes hr -1 ... . 281 Chilean Krill Fishery Analysis of 199 'I season 90 ~·_~w __ 80 --- --..-... E ---- 75 ... 20 25 30 35 Fishing day (Starting 20/02/91) Figure 7: Daily average haul depth Cm) during 1991 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 273–287 : Автор(ы): Marín, V.H., A. Mujica and P. Eberhard

3. Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation

   study, the SDWBA TS pattern and frequency response behaviours at standard survey frequencies and animal ... the distribution of animal orientations. Due to the high variability of TS to realistic changes in ... - ducer. When the animal orientation was away from these aspect angles, the predicted scattering was ... O rie nt at io n an gl es * θ i ph i de gr ee s 90 + th et a Fr eq ue nc y ... 1 15 1. 15 0. 29 3 0. 36 2 20 1. 2 0. 31 9 0. 39 4 30 1. 3 0. 37 4 0 ... ) and standard deviation (5, 10, 20 and 30 degrees) of the Gaussian distribution of orientation. It ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Автор(ы): Calise, L. and G. Skaret

4. A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   studies of penguin diet only last one or two years, which will fail to fully capture annual variability ... cases. Two studies of pre-moult movements and of moulting distribution exist, and one of juvenile ... north of the colony to latitudes less than 64°S, where water was deep (>3 000 m) and ice-free. Two ... (three female, one male, two unknown gen- der) with PTTs in October–December during chick rearing at ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Автор(ы): Ratcliffe, N. and P. Trathan

5. Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)

   the Ross Sea (CCAMLR Subarea 88.1) have been aged assuming that one translucent zone is formed ... in each consecutive mode. This indicates that the modes represented year classes and that one ... examined, and the translucent zones counted. Zone counts were consistent within modes, and increased by one ... , 2.5 and 3.5 years were estimated to be 14, 28, 37 and 46 cm total length (TL) respectively. These ... . 0 20 40 60 80 100 120 140 160 180 0 5 10 15 20 25 30 Age (years) To ta l l en gt h ... is from 0.6 to 4.0 cm yr-1 for fi sh aged from 15 to 30 years. It is interesting that all the ... between 0+ and 3+ years. A length-frequency distribution of the aged fi sh by estimated year class ... McMurdo Sound (78°S 167°Ε). One was recaptured by a longline vessel in the northern Ross Sea (71°S 176 ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 125–138 : Автор(ы): Horn, P.L., C.P. Sutton and A.L. DeVries

6. A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data

   Sea Region incorporating multi-year mark-recapture data Abstract / Description:  An exploratory ... hence a multi-year mark-recapture tagging program was initiated by New Zealand fishing vessels in 2001 ... model was developed for Antarctic toothfish in the Ross Sea region that incorporates multi-year release ... of tagged fish and subsequent multi-year data of recapture of tagged fish in conjunction with fishery ... 000 Antarctic toothfish from the RSR have been aged each year since 1998, assuming that one ... north fishery selectivity 10 20 30 40 50 Age Age Age ... Age Age Age 10 20 30 40 50 10 20 ... RSR. 60° S 65° S 70° S 75° S 80° S 150 °E 160° E 170°E 180°E 170°W 160°W 150°W Figure 1 ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Автор(ы): Mormede, S., A. Dunn and S.M. Hanchet

7. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   selectivity Age (years) Age (years) Age (years) Year Year Year S el ec tiv ity S to ck s ta tu s ... selectivity functions. 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Immature selectivity Age (y ... Age (y) 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Mature selectivity Age (y) 2000 2010 ... missing larger fish can be obtained with two different selectivity functions: one that catches large ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Автор(ы): Ziegler, P.E., D.C. Welsford and A.J. Constable

8. Archival and satellite-linked data recorders

   recorders are deployed on freely swimming animals and gather data on aspects of an animal’'s diving ... behaviour. The records can be recovered in one of two ways: the data recorder must either be recovered ... equivalents of these two types of recorders have become available. A raw-data recorder is one in which the ... transmissions in one satellite pass before a geolocation can be determined. This presents no problem for a ... transmissions throughout a pass of the satellite to geolocate reliably. The animal under investigation ... several identification codes so that more than one message can be transmitted per satellite pass. Such ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 475-493 : Автор(ы): Hill, R.D.

9. Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of Antarctica

   locations, or between samples collected in consecutive years, were observed. These results, based on ... one genetic stock with gene flow via the Antarctic Circumpolar Current or two or more stocks ... isolated population of D. mawsoni seems very unlikely given the long (almost two years) pelagic stage ... and 2012 that indicated genetic similarity between the two years. This study, which included ... is restricted to the Convention Area man- aged by CCAMLR. The fishery for D. mawsoni started in the ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 1–9 : Автор(ы): Mugue, N.S., A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev

10. Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia

    and 4 animals, and have a relatively lower impact on catches, depressing CPUE by up to 20%. Sperm ... whales have been more frequently encountered in recent years, occurring in larger pod sizes, whereas ... South Georgia Li ne s S P W o bs er ve d (% ) 100 90 80 70 60 50 40 30 20 10 0 May ... June July August West East Li ne s K IW o bs er ve d (% ) 100 90 80 70 ... in s et s w ith ou t a ny c et ac ea n pr es en ce 0% 20% 40% 60% 80% 100% 2002 ... °S 36.5°W); (b) the five fine-scale rectangles with the highest CPUE in any one year. The results ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Автор(ы): Moir Clark, J. and D.J. Agnew

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