Search results
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Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
in the grounds. One fish has been recorded as moving from ground A to Kerguelen and was at the upper end ... direct evidence of toothfish moving such distances and of fish moving from one fishery to another ... in the grounds. One fish has been recorded as moving from ground A to Kerguelen and was at the upper end ... direct evidence of toothfish moving such distances and of fish moving from one fishery to another ... length with about 30 mm protruding from the fi sh. Fish were tagged with one TIRIS tag inserted ... in the dorsal midline just behind the head and two T-bar tags, one on each side just under the second dorsal ... (approximately 80 mg Sr per kg of fi sh) to mark their otoliths for later verifi cation of the age- reading ... because the recruitment varies from one year to the next. Annual recruitment is applied according ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Author(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
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Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies
on their feeding, reproduction and age/length composition. The paper summarizes recently published results ... on their feeding, reproduction and age/length composition. The paper summarizes recently published results ... , is carried away by the Antarctic Circumpolar Current. Only fish older than one year can survive in the cold ... = 20.35 [i -eo.zs (t+O.t4>]. Mean natural mortality of 1.14 was calculated from one year's data ... reported length was 12.5. Maximum age is 4 to 5 years. Age of maturity is 2 to 3 years (Shust and Kochkin ... of samples taken in different areas are shown in Figure 3. Maximum age is not greater than 5 years. A slight ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Author(s): Sabourenkov, E.N.
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Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)
. Age-at-sexual maturity was estimated to be about 2 years for females and 2.5 years for males. Like ... consisted mainly of adult individuals between 1 and 3 years of age, with very few older fish. File ... . The estimated age range was 1–5 years for males and 1–4 years for females of C. wilsoni. Applying ... and 0.81 for females and 32.7 and 0.68 for males. Age-at-sexual maturity was estimated to be about 2 years ... 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) Age (years ... 5 0 0 1 2 3 4 5 6 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 ) b(b) Age (years ... Islands. Age (years) Females Males TL (cm) 1 2 3 4 1 2 3 4 5 18 1 19 2 2 20 ... by difference of fish length between two subsequent years. Females MalesEstimated age (years) Fish length ...
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
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Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill
precautionary level of catch was not obtainable while meeting CCAMLR decision criteria for at least two ... meeting CCAMLR decision criteria for at least two of the four recruitment vectors based on net sampling ... of two-year olds in one year must be fewer than the number of one-year olds the previous year ... based on maximum age. Murphy and Reid (2001) suggested that a value of 1.25 produced the best match ... inputs to the GYM include the CV of the unexploited biomass B0, weight-at-length/age relationships ... zero catch) with recruitment variabilities from one of the four areas, four Elephant Island configu ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Author(s): Kinzey, D., G. Watters and C.S. Reiss
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A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements
windward of the hookline; and recommending that fishers deploy a minimum of two streamer lines ... be deployed windward of the hookline; and recommending that fishers deploy a minimum of two streamer lines ... (m) One streamer line: UW IW-50 Two streamer lines: IW-50+Cannon 10 20 30 ... on two occasions when one of two streamer lines broke midway through gear deployment. Seabird catch ... line over sinking hooks. Alternatively, requiring a minimum of two streamer lines – one from either ... a minimum of two streamer lines on a voluntary basis according to performance and material standards, one ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Author(s): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke
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Fish stock assessment survey in Subarea 48.3
of positions of hauls, catch rates and size composition of catches. The standing stock of one of the most ... are given of positions of hauls, catch rates and size composition of catches. The standing stock of one ... decline by comparison with results from the 1989/90 season. Other species do not show a similar dramatic ... a major decline by comparison with results from the 1989/90 season. Other species do not show a similar ... fishing were seen either at South Georgia or Shag Rocks. The two largest catches, one of 696 kg at Shag ... Georgia, and both sexes except where indicated. Age (years) Species 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 11.0 3.5 3.8 2.3 2.4 1.1 0.4 N. rossii 1.6 3.8 25.5 30.0 19.0 7.9 7.9 3.7 0.7 Table 11: Age ... are for South Georgia, and both sexes except where indicated. Age (years) Species 1 2 3 4 5 6 7 8 9 10 11 12 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Author(s): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
at aspects of Antarctic toothfish (Dissostichus mawsoni) biology, including stock structure, age and growth ... 4). It noted that one problem with the CPUE data collected from the tag- recapture experiment ... , peaked in November but dropped away by mid-December. Therefore, changes in the timing of fishing during ... 2004, the highest catches have been taken consistently from SSRU 881H, and in the past two years ... Paper Title: Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on ... relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf (defined here as the ... continental shelf out to the edge of the shelf break at about 600–800 m depth). The focus is on D. mawsoni ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Author(s): Hanchet, S.M., S. Mormede and A. Dunn
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Scientific observations in CCAMLR fisheries – past, present and future
sheries now require at least two scientifi c observers, one of whom must be appointed in accordance ... and they operate on vessels under fl ags other than that of their own country. This paper outlines the history ... bilateral agree- ments between CCAMLR Members to exchange observ ers (i.e. an observer designated by one ... Member serves on a vessel fl ying the fl ag of another Member). Designating Members appoint scientifi ... strategy has often had to deal with incomplete and uncertain information on affected resources. Fishery ... observers on board fishing vessels has assumed prominence in the collection of essential data for fisheries ... species as well as the impact of fishing on dependent and related species, including seabirds and marine ... bilateral agreements between CCAMLR Members and they operate on vessels under flags other than that of their ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 81–98 : Author(s): Sabourenkov, E.N. and E. Appleyard
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Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea
not been validated. The maximum estimated age was 14 years, but this should be regarded as a conservative ... L t is the pelvic length (PL) in centimetres at age t years. Applying this growth curve to the estimated lengths ... not been validated. The maximum estimated age was 14 years, but this should be regarded as a conservative ... is the pelvic length (PL) in centimetres at age t years. Applying this growth curve to the estimated lengths ... validated. The maximum estimated age was 14 years, but this should be regarded as a conservative estimate ... (PL) in centimetres at age t years. Applying this growth curve to the estimated lengths at maturity ... for males and females (64 and 66–69 cm PL respectively) produced estimated ages at maturity of 6–7 years ... for males and 8–11 years for females. These estimates are near the middle to upper end of the range of ages ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Author(s): Francis, M.P. and C. Ó Maolagáin
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Breeding numbers and success of Eudyptes penguins at Marion Island, and the influence of mass and time of arrival of adults
chrysolophus) over 26 years, as there was also for eastern rockhopper (E. chrysocome filholi) over 22 years ... , there was no significant correlation in mass on arrival between the two species. It is likely that at Marion Island ... at study colonies of macaroni penguins (Eudyptes chrysolophus) over 26 years, as there was also for eastern ... rockhopper (E. chrysocome filholi) over 22 years, suggesting that overwintering conditions may influence ... breed at Marion Island (46.9°S 37.9°E), one of two islands in the sub-Antarctic Prince Edward Islands ... , breeding success aver- aged 0.57 ± 0.17 chicks/pair at Van den Boogaard River, 0.46 ± 0.13 at Archway Bay ... of macaroni penguins breeding at the three long-term study colonies were significantly related in only one ... penguins breeding were significantly related in all three comparisons, but in only one of three ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 175–190 : Author(s): Crawford, R.J.M., B.M. Dyer, J. Cooper and L.G. Underhill