Résultats de la recherche

1. Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea

   mean total length-at-maturity (38.8 and 46.4 cm) and mean age-at-maturity (10.6 and 13.6 years) are ... Paper Title:  Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from ... work on this species. Von Bertalanffy growth models assuming different growth by sex and by year-within ... -sex were fitted separately to a revised length-at-age dataset and compared using the likelihood-ratio ... standard normal distribution R es id ua ls (b) 20 30 40 50 60 70 80 -2 -1 0 1 2 Fitted values R ... 0 1 2 3 20 30 40 50 60 70 80 Fitted ... R es id ua ls (b) 20 30 40 50 60 70 80 -2 -1 0 1 2 Fitted values R es id ua ls -3 -2 -1 ... 40 50 60 0 10 20 30 40 50 60 Age ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 291–303 : Auteur(s): Marriott, P.M., M.J. Manning and P.L. Horn

2. Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia

   test for paired data (Ts = 0.256, n = 59) conducted on the remaining 56% showed that differences in age ... appropriate for determining the age of D. eleginoides because it does not underestimate age and is the most ... 24 years. This is very close to the maximum age of 22.8 years calculated from Taylor's formulae ... Paper Title:  Comparison of age readings from scales and otoliths of the Patagonian toothfish ... represents one year of life. Counting such annuli is a valid technique for determining the age of Antarctic ... 18. Cassia 0 8 8 8 8 8 8 8 m w m 2 z ? & 80 T Age 5 " @ ! \ ! , L L 20 t 0 0 0 0 ... m 2 z z : 80 20 0 -Uo 0 0 0 0 0 0 0 m w m 2 z z z Age l 7 o J s ! : > ! ! ! 0 0 ... 7600 Mar del Plata, Argentina Abstract Scale and otolith age readings were compared for 105 ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Auteur(s): Cassia, M.C

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

   males. Age-at-sexual maturity was estimated to be about 2 years for females and 2.5 years for males ... selected for the study, consisting of 120 females and 98 males. The age of fish was estimated by counting ... ) growth function to the age–length data, a growth curve was obtained for each sex. The estimated values of ... 1–5 years for males and 1–4 years for females of C. wilsoni. Applying the von Bertalanffy (VB ... population (c). 0 5 10 15 20 25 30 35 40 0 1 2 3 4 5 6 Age (years) To ta l l en gt h (c m ) a(a ... 20 25 30 35 40 0 1 2 3 4 5 6 Age (years) To ta l l en gt h (c m ) c(c) Age (years) To ta ... 15 20 25 30 35 40 0 1 2 3 4 5 6 Age (years) To ta l l en gt h (c m ) b(b) Age (years) 0 ... to be considered with caution. The estimated age range was 1–5 years for males and 1–4 years for ...

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

4. Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea

   been validated. The maximum estimated age was 14 years, but this should be regarded as a conservative ... ]), where L t is the pelvic length (PL) in centimetres at age t years. Applying this growth curve to the ... ages at maturity of 6–7 years for males and 8–11 years for females. These estimates are near the middle ... Paper Title:  Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea Abstract ... and capture. An increase of 0.5 years for all age estimates would move the growth curve suffi ... sets of age determinations (Campana et al., 1995). Campana (2001) reported an empirical regression ... lengths of 4.3 and 4.6 mm compared with an expected length of about 8 mm. Possible explanations for this ... determine Pelvic length (cm) 0 20 40 60 80 100 T ho rn le ng th ( m m ) 0 2 4 6 8 10 12 14 ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Auteur(s): Francis, M.P. and C. Ó Maolagáin

5. Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).

   Paper Title:  Distribution and size–age composition of Antarctic krill (Euphausia superba) in the ... South Orkney Islands region (CCAMLR Subarea 48.2). Abstract / Description:  The distribution, size–age ... distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... dominated in cold Weddell Sea waters in the southern parts of the fishing area, while older age classes (3 ... % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 ... % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% 10 0% 90 % 80 % 70 % 60 % 50 ... +; modal length 25–30 mm) and 2-year-old krill (age 2+; modal length 40–45 mm); the 3-, 4- and 5-year-old ... + 3+ 4+ 5+ 2 3 4 5 6 7 2 3 4 5 6 Size–age groups (a) % 20 10 0 –10 –20 –30 29–30 31–32 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Auteur(s): Sologub, D.O. and A.V. Remeslo

6. Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990

   -26 and 30-34 cm. Only vertebra samples (n =140) were used in age determination. Age groups from 1+ to ... Paper Title:  Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken ... /86 year classes. The first small peak corresponds with the strong 1988 year class. File:  17 ... WG-FSA-90/33 AGE DETERMINATION OF CHAMPSOCEPHALUS ... assessments and, consequently, setting an optimum catch quota depends on the accuracy of age determination ... which are, without special treatment, almost opaque. Published data on C. gunnari age determination ... according to a methodology described in an earlier work (Kochkin, 1980). Examination of age-reading ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Auteur(s): Kochkin, P.N.

7. Age and growth of Antarctic euphausiacea (crustacea) under natural conditions

   Peninsula and the south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six ... years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... Paper Title:  Age and growth of Antarctic euphausiacea (crustacea) under natural conditions ... eastern Weddell Sea. Former opinions that differ are discussed. Seasonal growth was re-analyzed for the ... south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six years for the ... - 369 - SC-CAMLR-VI/BG/24 AGE AND GRcwrH OF ANTARCTIC ... . Former opinions that differ are discussed. Seasonal growth was re-analyzed for the species Euphausia ... triacantha, and a three-year life span proposed. Male Euphausia cr¥stallorophias have a shorter life span ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Auteur(s): Siegel, V.

8. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

   Paper Title:  Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... Australian sub-Antarctic trawl fisheries Abstract / Description:  Estimates of age and growth were obtained ... were no significant differences in growth parameters calculated for males and females. Von Bertalanffy ... growth parameters for both sexes combined were: L ∞ = 690 mm, K = 0.069 and t 0 =-2.4. The size at sexual ... Ross Sea. 0 100 200 300 400 500 600 700 0 5 10 15 20 25 30 Age (years) To ta l l en gt h ... ± (95% CI) is 418 ± 12 mm, corresponding to an approximate age of 11 years, and the value of Lm50 ... ± (95% CI) is 511 ± 17 mm, corresponding to an approximate age of 17 years. The 95% confi dence ... at Heard and McDonald Islands was 670 mm long which corresponds to an age of 50 years or more. The ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Auteur(s): van Wijk, E.M., R. Williams and A.J. Constable

9. Growth and age/length structure of populations of Notothenia (Lepidonotothen) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean

   g at the banks and 153 to 188 g in the Kerguelen Island area were recorded for fish at age 6 to 12 ... paper. It was found that during the first years of life the linear growth rate is 3 to 5 cm per year. It ... Paper Title:  Growth and age/length structure of populations of Notothenia (Lepidonotothen ... :  Age, growth and age/length composition of populations of grey rockcod (Notothenia (Lepidonotothen ... the Lena Bank begins at an earlier age than in other areas (Table 1). Weight gain values for the Ob ... reach maturity at the age of 7 to 8 and the bulk of the catch for 1985 to 1987 comprised 6 to 7 year ... predominate. The mean age of fish in catches dropped by about four years. (i v) Between-year dynamics of age ... g in the Kerguelen Island area were recorded for fish at age 6 to 12. Growth parameters were ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 123–139 : Auteur(s): Zaitsev, A.K.

10. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

    , analyses using catch-at-age data derived from research cruises may provide an alternative to other methods ... Paper Title:  Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides ... fish stocks, which seriously affect model assumptions. This paper demonstrates that for the new fishery ... model assumptions. This paper demonstrates that for the new fishery, analyses using catch-at-age data ... (recruitment = mortality); and • fishing mortality is separable by age (Doubleday, 1976). Catch-at-age for ... = relative fishing mortality coefficient at age F = fishing mortality for completely recruited fish M ... m = terminal age L\ = time between the beginning of the year and the beginning of the research ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Auteur(s): Zuleta, A.V. and C.A. Moreno

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