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1. Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index

   , and using this infor- mation it was possible to identify, for each fi shing ground, one or more searching ... were used to arrange the ST working database. One data row consists of an individual SU which is defi ... ned as one continuous operational unit (see Table 1). Figure 2 shows geographical distributions ... . Discussion One of the questions is whether the factors re lat ing to operations (including type of product ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Author(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu

2. The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   to be considered when evaluating patterns that have emerged in Southern Ocean ecosystems in the course of the 20 ... emerged in Southern Ocean ecosystems in the course of the 20th century. As a first step towards ... estimates of C. gunnari existed for 1975/76, one year before large-scale exploitation of the species ... (Bogdanov and Lubimova, 1978; Hopkins and Torres, 1989). Some species, notably the larger ones ... ). This scheme is similar to the one proposed by Eastman (1993) which is largely based on the zoo geographical ... al., 2004). Krill was the sole food item of one individu- al caught in the Indian sector (Solyanik ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Author(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams

3. Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1

   is the number of animals in age class i, and n is the age of the oldest age class in the stock (de la Mare ... /89. From 1989/90 to 1991/92, almost no age 2+ components were identified. In 1992/93 and 1993/94 ... between environmental factors and krill variability was one of the major issues addressed at CCAMLR's ... to tip of telson) of 50 individuals from one haul per day. Detailed information on the Japanese fishing ... 48.1 (Antarctic Peninsula region) from 1980 to 1996 were calculated based on logbook data from Japanese ... general decrease in krill density in the study area were considered as possible reasons for this. On the ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Author(s): Kawaguchi, S., T. Ichii and M. Naganobu

4. Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric characteristic?

   a certain proportion of birds. Two overlapping normal distributions are used to show ... of birds with greater than 80% success, the difference between the true and apparent mean is likely ... a discriminant function with greater than 80% success may be used to derive statistically robust estimates ... Type I and Type II errors. Lack of knowledge about the sex ratio between years makes combining the data ... one year, and all males the next, then the characteristic will appear to have increased in size ... femelles. 11 n'est plus necessaire de determiner les sexes si l'on utilise la procedure qui consiste ... was made that one way to avoid the problem of sex detennination would be to combine males and females ... an apparent mean for one sex which is significantly different from the true mean for that sex. Thus if we ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 259–272 : Author(s): Agnew, D.J.

5. Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   for at least one year. Individual oocytes are then recruited into the vitellogenic phase over at least a 6–12 ... by approximately May each year. The age at 50% spawning for females on the Ross Sea slope region is 16.6 years (95 ... by approximately May each year. The age at 50% spawning for females on the Ross Sea slope region is 16.6 years (95 ... at a younger age with an A50% of 12.8 years (95% CI 11.9–14.0) or 120.4 cm (95% CI 114.8–126.7 ... is then one year older than the age used for the hindcasting method, and size is accordingly different ... ) regions. As the male analysis used a forecasting method, age is one year older at spawn- ing and length ... . To compare the forecasting and hindcasting methods, fish ages for the forecast- ing method were advanced one ... % of Lmax (for females, 64% for males). However, one unique aspect of this late age-at-spawning ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Author(s): Parker, S.J. and P.J. Grimes

6. The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery

   . Birds feeding chicks also made journeys of one to two days ranging up to 12 km after 17 January when ... journeys of one to two days ranging up to 12 km after 17 January when the sea became ice free to the coast ... Shetland and South Orkney Islands and reflects the distance offshore of krill, one of their major food ... Orkney Islands and reflects the distance offshore of krill, one of their major food sources. ... chicks also made journeys of one to two days ranging up to 12 km after 17 January when the sea became ... Orkney Islands and reflects the distance offshore of krill, one of their major food sources. Resume ... AND DISCUSSION Ten birds were instrumented utilising seven PTTs. Twenty-one foraging trips were recorded ... as they travelled away from the colony. Once the birds started to return they did so directly and quickly following ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Author(s): Kerry, K.R., J.R. Clarke and G.D. Else

7. Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia

   . Two experiments were conducted: (i) a comparison of the use of one stone at each attachment site ... (single weight) and the other had the two-stone setup (double weights). In the second experiment one ... with the vessel in large numbers. Typically, one or two birds of this species were present during setting ... oiseaux est marquee lorsque l'on utilise des poids de 8,5 kg par rapport aux poids de 4,25 kg, mais on ne ... effects of different weighting regimes on the incidental mortality of birds caught on longlines fishing ... attached at 40 m intervals on a Spanish-rigged longline. There was a significant reduction in bird ... intervals should be used. Results suggested that seabird by-catch on lines using effective weighting regimes ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Author(s): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes

8. Potential interactions between wandering albatrosses and longline fisheries for Patagonian toothfish at South Georgia

   % of their uplinks were over the South Georgia shelf, most of the remainder being in one or two specific areas ... of their breeding season (which lasts and involved a total of five vessels, only one almost one complete year ... need frequent feeding and one parent remains at the nest brooding or guarding the young chick ... , injury to or death of one parent at this time will certainly cause the young chick to die. Furthermore ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 101–110 : Author(s): Croxall, J.P. and P.A. Prince

9. A review of the trophic role of mesopelagic fish of the family Myctophidae in the Southern Ocean ecosystem

   and spring periods feeding intensity is only half to one-third of the summer levels (Kozlov and Shust, 1991 ... of one species of squid, 18 species of fish (.Nototheniidae - 8, Channichthyidae - 7, Bathydraconidae ... of this particular squid (Klumov and Yukhov, 1975) and that myctophids account for 50 to 60% of that amount, one ... - et macroplancton consommee par les Myctophidae met en evidence le niveau eleve d'abondance et de ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 71–77 : Author(s): Kozlov, A.N

10. Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (Subarea 48.3), Antarctica, during austral winters from 2002 to 2008

    (n = 7) 2002 (n = 10) 80 70 60 50 40 30 20 10 0 P er ce nt ag e co m po si tio n 10 ... (n = 20) 2004 (n = 33) 2008 (n = 643) 70 60 50 40 30 20 10 0 P er ce nt ag e co m po si ... 40 30 20 10 0 P er ce nt ag e co m po si tio n 20 30 40 50 ... , P. bolini, G. braueri and G. fraseri. Electrona antarctica was considered to be one of the most abundant ... samples collected by scientific observers on board Japanese commercial krill fishing vessels in the area ...

    Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Author(s): Iwami, T., M. Naganobu, K. Taki and M. Kiyota

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