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1. On the intensity of sampling krill trawl catches

   uses actual krill length-frequency data in an attempt to address the problem of the determination of ... be discerned (e.g., length-with-age). At present, and in the interests of both statistical rigour and ... differences in length should be considered in conjunction with the need to collect information on maturity ... CATCHES D.G.M. Miller* Abstract This paper uses actual krilllength-frequency data in an attempt to ... desired biological characteristics which are to be discerned (e.g., length-with-age). At present, and in ... implications associated with the detection of specific differences in length should be considered in ... krill? 1. INTRODUCTION At its first meeting in June 1989, the CCAMLR Working Group on Krill (WG ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 29–48 : Author(s): Miller, D.G.M.

2. Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics

   fishery in the Ross Sea region is comprised of two species, rather than being solely Macrourus whitsoni ... , was recognised in 2010 with the identification of a new species, M. caml. Grenadier are the main by ... -catch in the toothfish fishery and modelling suggests that they may be subject to predation release as ... the abundance of toothfish reduces. In order to improve information on the spatial distribution, age ... Grenadiers (Family Macrouridae) are taken as by-catch in many of the toothfish fisheries in the Southern ... main by-catch in the fishery for Antarc- tic toothfish (Dissostichus mawsoni) in the Ross Sea region ... reported in 1998, which increased to 480 tonnes in 2005 (Hanchet et al., 2008) and was 130 tonnes in 2014 ... (Stevenson et al., 2014). Grenadiers are also a major prey species of Ant- arctic toothfish in the region ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 15–28 : Author(s): Pinkerton, M.H., C. Ó Maolagáin, J. Forman and P. Marriott

3. On reproduction of Electrona carlsbergi (Tåning)

   of the Southern Ocean. From materials available it has been ascertained that E. carlsbergi spawns in ... synchronous. Vitelline eggs have a diameter from 150 to 650 μm; in hydrated oocytes it is up to 900 μm ... summer/autumn in the Southern Hemisphere. File:  23-Mazhirina.pdf ... it has been ascertained that E. carlsbergi spawns in the notal waters. Maturation of females begins ... from 150 to 650 j.Ul1; in hydrated oocytes it is up to 900 /.lm. Maturation of ovaries is continuous ... , and spawning is serial. The spawning season is long and coincides with summer/autumn in the Southern ... species coincides with the notal zone. A study of gonads in female E. carlsbergi from the Antarctic ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 397–409 : Author(s): Mazhirina, G.P.

4. Integration of CPUE data into assessments using the Generalised Yield Model

   ~ p e 6 y e ~ BHeCeHMR TOJlbKO He7HaYMTeJIbHblX I . I ~ M ~ H ~ H M ~ ~ B K0MIIbK)TePHYK) nporpaMMy, BbIn ... into assessments using the Generalised Yield Model (GYM). In this paper, we propose a method, based on ... the use of importance sampling, for incorporating information on trends in standardised CPUEs into GYM ... eleginoides) in Subarea 48.3. The method requires only very small adjustments to the computer program ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Author(s): Kirkwood, G.P. and A.J. Constable

5. 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

   frequencies were also included in defining relative probabilities, the VP maximum likelihood (MLPLB) and IWLS ... measured at release and first recapture in mark–recapture studies were compared where predictions used the ... developed and showed that the bias is relatively small for the range of release lengths in the data ... , the mean trend in observed AGR values with release length compared with those obtained using IWLS ... . When length- bin sampling frequencies were also included in defi ning relative probabilities, the VP ... annual growth rate (AGR) for lengths measured at release and fi rst recapture in mark–recapture studies ... the range of release lengths in the data. Predictions of AGR using the MLPLB-estimated VB parameters ... were closer to, but still substantially higher than, the mean trend in observed AGR values with ...

   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

6. Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season

   operations were observed on board a commercial vessel and the actual operation described in detail. ‘Fish ... -finder’ was most useful in detecting swarms, while sonar was used to judge the towing direction. The size ... of fished swarms ranged from 100 m to 10 km with different distributions occurring in different ... commercial vessel and the actual operation described in detail. "Fish-finder" was mose useful in detecting ... to 10 km with different distributions occurring in different fishing areas. While catch per towing ... per unit effort) data as an index of krill abundance is now under investigation in the "Krill ... . Information utilized in this report was collected on board Zuiyo Maru No. 2 (3 023 tons, Hakodate Kokai ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Author(s): Ichii, T.

7. Do krill and salps compete? Contrary evidence from the krill fisheries

   krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... clear relationship was observed in the Elephant Island area. Possible reasons for these phenomena are ... green krill were analysed. No relationship between salp density and the proportion of green krill in ... the catches was evident when both salps and krill were taken together. In the Livingston Island area ... relationship was observed in the Elephant Island area. Possible reasons for these phenomena are discussed ... limited in terms of continuity through the season. Krill trawlers are unable to cover wide areas, but ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Author(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

8. Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

   Islands (Antarctic Peninsula) in February–March 2006 and January 2007. A total of 218 specimens were ... annuli on transverse sections obtained by grinding and polishing whole otoliths embedded in epoxy resin ... in moulds. The precision of age estimates between readings was tested applying both the average ... , although it had a much shorter life span. The part of the population of C. wilsoni caught in the study area ... research surveys by benthic trawl carried out off Joinville–D’Urville Islands (Antarctic Peninsula) in ... obtained by grinding and polishing whole otoliths embedded in epoxy resin in moulds. The precision of age ... population of C. wilsoni caught in the study area consisted mainly of adult individuals between 1 and 3 ... Antarctic Peninsula (CCAMLR Statistical Subarea 48.1) in the western Atlantic Ocean sector of the Southern ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Author(s): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock

9. Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf

   prospecciones de arrastre de C. gunnari durante el dfa solamente. 1. IN1RODUCTION Scientists of several ... commercial concentrations of C. gunnari in years of high abundance of the species (1982/83, 1983/84 and 1986 ... considered in the paper. A distinct pattern of daily vertical migrations of C. gunnari was observed on the ... South Georgia shelf. During the day, fish concentrate near the bottom in concentrations 5 to 7 m thick ... may be used for clarification of survey techniques used in stock assessment. For a number of years ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Author(s): Frolkina, J.A. and V.I. Shlibanov

10. Methodological guidelines on the assessment of trawl catchability of krill by means of statistical modelling

    method, which is described in the works by Metropolis, N., Ulam, S. (1949) and Sobol, I.M. (1978), is ... assessment of complex stochastic systems, including the assessment of the effectiveness of trawl nets used in ... of various configurations. The algorithm for solving this problem is constructed in such a way that ... equations and two double inequalities). The proposed algorithm can be realised by computer in algorithmic ... in the works by Metropolis, N., Ulam, S. (1949) and Sobol, I. M. (1978), is used as a basis. The ... stochastic systems, including the assessment of the effectiveness of trawl nets used in krill fishing ... configurations. The algorithm for solving this problem is constructed in such a way that it can be applied ... two double inequalities). The proposed algorithm can be realised by computer in algorithmic ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 195-222 : Author(s): Kizner, Z.I.

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