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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 ... 1–5 years for males and 1–4 years for females of C. wilsoni. Applying the von Bertalanffy (VB ... ) growth function to the age–length data, a growth curve was obtained for each sex. The estimated values of ... 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 : Autor(es): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock
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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 ... validated. The maximum estimated age was 14 years, but this should be regarded as a conservative estimate ... pelvic length (PL) in centimetres at age t years. Applying this growth curve to the estimated lengths at ... –7 years for males and 8–11 years for females. These estimates are near the middle to upper end of ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Autor(es): Francis, M.P. and C. Ó Maolagáin
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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 ... + 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 ... +; modal length 25–30 mm) and 2-year-old krill (age 2+; modal length 40–45 mm); the 3-, 4- and 5-year-old ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Autor(es): Sologub, D.O. and A.V. Remeslo
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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 : Autor(es): Kochkin, P.N.
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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 ... least twice and in some cases three times during their life, except for E. frigida which spawns only ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Autor(es): Siegel, V.
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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 ... McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... were no significant differences in growth parameters calculated for males and females. Von Bertalanffy ... 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 : Autor(es): van Wijk, E.M., R. Williams and A.J. Constable
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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 : Autor(es): Zaitsev, A.K.
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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 ... = natural mortality 't = research survey duration (in years) R = recruitment t r = age at recruitment t ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Autor(es): Zuleta, A.V. and C.A. Moreno
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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)
Paper Title: A review of the diet and at-sea distribution of penguins breeding within the CAMLR ... in an ecologically sensitive manner demands that catches do not depress stocks within the foraging ... published information on the diet and at-sea distribution of the six penguin species that breed in the CAMLR ... Convention Area, the methods used to collect these data and the uncertainties inherent in them. The review ... population. Aims and scope The aim of this review is to summarise published data on penguins concerning ... Populations (WG-EMM- STAPP) work and will be presented elsewhere. The review begins by giving an overview of ... associated with each approach. It then proceeds to review all published information on the diet and at-sea ... comprehensive. The review only includes published literature to allow the reader to check the information at ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Autor(es): Ratcliffe, N. and P. Trathan
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Book review: Fish and Fish Resources of the Antarctic
Paper Title: Book review: Fish and Fish Resources of the Antarctic Abstract / Description: This ... work by K.V. Shust (Doctor of Biological Sciences), published in 1998, remains fairly unknown beyond a ... , of original material and published data describing comlnercial and potentially commercial Antarctic ... Antarctic bioresources, firstly by individual groups under the auspices of SCAR (Scientific Committee for ... knowledge acquired by the author over a period of more than 30 years allowed lum to analyse both the ... Antarctic waters only just over 80 meso- and bathypelagic species (30 families) have been recorded. The ... CCAMLR Scieiicc, Vol. 8 (2001): 165-168 BOOK REVIEW ... Book review meso- and bathypelagic families, Bathylagidae and Paralepididae, are highly numerous but ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 165–168 : Autor(es): Shust, K.V