Search results

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

   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 ... Paper Title:  Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni ... on o f fi sh Age (years) 5 10 15 20 25 30 ... . Red lines indicate the A50% or L50%. 0 5 10 15 20 25 30 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Age (yr ... of spawning-only females from the slope. 5 10 15 20 25 30 35 0. 00 0. 02 0. 04 0. 06 0. 08 0. 10 Age ... . The age at 50% spawning for females on the Ross Sea slope region is 16.6 years (95% CI 16.0–17.3 ...

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

2. Quantifying movement behaviour of vessels in the Antarctic krill fishery

   / Description:  Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... for high-quality year-round data on all vessels participating in the krill fishery to assist ... Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... for high-quality year-round data on all vessels participating in the krill fishery to assist ... h pe r h au l Av er ag e ca tc h pe r h au l 19 97 /9 8 19 98 /9 9 19 99 /0 0 20 00 ... operational data need to be updated because the krill fishery has changed markedly over the last 20 years ... .0 9. 4 30 .8 22 .8 34 .8 9. 5 8. 9 6. 1 1. 8 1. 0 10 .2 47 90 K or ea , R ep ... Kingston, Tasmania 7050 Australia Email – so.kawaguchi@aad.gov.au Abstract Ten years of recent fine ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Author(s): Kawaguchi, S. and S.G. Candy

3. Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study

   Paper Title:  Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... animal count data to a common reference point of breeding chronology for species with a complex temporal ... function of sampling availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal ... reported measures of uncertainty associated with originally published counts are propagated through ... IntegratIng Count effort by SeaSonally CorreCtIng anImal PoPulatIon eStImateS (ICeSCaPe): a method ... Canada Abstract This work describes a parametric bootstrap model for standardising animal count data ... availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... measures of uncertainty associated with originally published counts are propagated through to the final ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Author(s): McKinlay, J., C. Southwell and R. Trebilco

4. Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf

   of the area. It is implied that part of tlne western group migrates towards Shag Rocks at the age of 2-3 years ... towards Shag Rocks at the age of 2-3 years. It has been found that, by number, recruits represent ... Paper Title:  Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes ... to determine the age-length composition of mackerel icefish (Champsocephalus gunnari) from different parts ... ) but more frequently at age 2+ (20-25 cm length). It should also be noted that some C. gunnnvi year ... dPcadas del 70 y 80. Keywords: C. glrirrinrr, length-age composition, juveniles, immature and mature ... split-year, which starts on 1 July. On this date fish age was increased by one year. RESULTS ... a maxi-mum in October. At that time a new generation of fish reaching 20-25 cm in length (age class ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Author(s): Frolkina, G.A

5. Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a

   catch-at-length/age data and tagging data at-length/age. A simple algorithm, based upon the Petersen ... are not available – namely catch-at-length/age data and tagging data at-length/age. A simple algorithm, based ... tagging levels that will produce an expected abundance estimate in the following year of a given precision ... in the following year of a given precision whilst ensuring the sustainable exploitation of the stock as per ... component is incorporating the recruitment uncertainty used in the age-structured model pro- jections ... . of 0.75), for M a value of 0.13 with a 10% CV, and for age-at-maturity a value of 13 years with again ... Assessment And tAg progrAm AdAption methods for explorAtory fisheries in the CAmlr Convention AreA ... into an integrated assessment framework when more detailed data are not available – namely catch-at-length/age data ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Author(s): Hillary, R.M

6. Surveys of breeding penguins and other seabirds in the South Shetland Islands, Antarctica, January-February 1987*

   to have been about 40% overall increase in the chinstrap population in the last 20-30 years, about three ... in the chinstrap population in the last 20-30 years, about three-fourths of the difference between our counts ... were also found to be more abundant than previously reported. (* Published in: NOAA Technical ... Memorandum NMFS Antarctic Marine Living Resources Program (AMLR)) File:  20-Shuford-and-Spear.pdf ... -30 years, about three-fourths of the difference between our counts and previous ones is due to more ... a jugula ire ait augmente globalement d'a peu pres 40% au cours des dernieres 20-30 annees, environ les ... 20-30 anos, aproximadamente tres cuartas partes de la diferencia entre nuestros recuentos y los ... rro rrpeAblAYlI\l1M OlleHKaM. XOTH, KaK Ka)KeTCH, 3a rrOCJIeAHl1e 20-30 JIeT o611\ee KOJII1QeCTBO ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 449-451 : Author(s): Shuford, W.D. and L.B. Spear

7. CCAMLR ecosystem monitoring and management: future work

   . This paper reviews progress in developing ecosystem-based management procedures by summarising the gaps ... . This paper reviews progress in developing ecosystem-based management procedures by summarising the gaps ... into small-scale management units. This remains a predictive approach to man- aging krill fi sheries. CEMP ... of predators is primarily limited to the age groups of populations found breeding on land, and monitoring ... of krill biomass, krill demography. Constable 244 • Assessment method: age-structured krill popu ... feeding relationship between predators and krill. • Assessment method: age-structured krill popu- lation ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Author(s): Constable, A.J

8. [node:field-journal-volume]:37-51

   was attributed to each age estimate, as follows: 1. certain count 2. uncertainty of ±1 year 3. uncertainty ... are apparent for all three parameters (Table 3). However, the lack of fi sh aged younger than 9 years has ... , the mean age at maturity was estimated to be 12 years for males and 14 years for females. DISCUSSION ... 55 60 Age (years) To ta l l en gt h (c m ) Males Males Females Females Figure 2: Raw age ...

   Science Journal Paper : 37–51

9. Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses

   : further evidence and the relation between δ15N and animal age. Geochim. Cosmochim. Acta, 48 (5): 1135 ... ‰ (Figure 4). Discussion Antarctic toothfish has been consistently man- aged by the CCAMLR as a key ... ° S 90° 95°E Sampling site 5841C 0 1 2 3 4 5 6 0 10 20 30 (32 ... as a carrier gas. The GC temperature was pro- grammed from 50°C for 1 min, ramping to 150°C at 30°C min ... for Antarctic toothfish (Dissostichus mawsoni) in the small-scale research unit (SSRU) 5841C in the ... between them. δ 15 N values of Antarctic toothfish were higher than for the other species collected ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Author(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*

10. Composition and characteristics of ichthyofauna in pelagic waters of South Georgia (Subarea 48.3)

    caught in the water column. The main food item (up to 60-80%) of both juvenile and adult fish taken ... item (up to 60-80%) of both juvenile and adult fish taken by the sampling trawl in the water column ... fish of age group 1, which comprised 30-50% of catches, significant amounts of larger specimens ... was 40 to 190 mm. Juveniles of age group 1 (40 to 80 mm) were recorded during four surveys and over ... age group 1 at various times (mm). Table 5: Length composition of species of Channichthyidae fish ... in catches (mm). NB: Numerator - the length of 'uveniles in age-group 1 Denominator - length of Ash older ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 125–164 : Author(s): Frolkina, G.A., M.P. Konstantinova and I.A Trunov

Pages