Search results
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The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands (Indian Ocean sector of the Southern Ocean)
mature from east to west. These data assume that all fish were independ- ently sampled from ... much deeper zones where fish are adult and much larger. The stock then suffers from a loss of older ... (Indian Ocean sector of the Southern Ocean) Abstract / Description: Patagonian toothfish (Dissostichus ... recently with longliners. This is the oldest fishery targeting D. eleginoides in the Indian Ocean sector of ... local overfishing. The expansion of the bathymetric range of the fishery to increasingly deeper waters ... distribution, timing and area of spawning, and movements between geographical sectors) on the adult section of ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 1–25 : Author(s): Lord, C., G. Duhamel and P. Pruvost
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Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
to the slope age-frequency distribution (data from Dunn and Hanchet, 2009), resulting in an age-frequency dis ... Antarctic Fisheries Working Group provided helpful dis- cussions and input into this paper. D. Ramm ... low due to severe loss of mass (both somatic and gonad). Comparing the ogives between males ... fishes from East Antarctica. Polar Biol., 11 (8): 615–621. Sil’yanova, Z.S. 1982. Oogenesis and stages ... Paper Title: Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the ... Ross Sea spanning the 2000–2009 fishing seasons. A characterisation of the oocyte developmental cycle ... of D. mawsoni shows that once development begins, oocytes grow and accumulate at the cortical alveoli ... least a 6–12 month period, resulting in a developed group of oocytes accumulating at the final ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Author(s): Parker, S.J. and P.J. Grimes
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Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds
fishery were conducted in 1950-1980. Cieglewicz and Strzyzewski (1960) studies the mechanism ... . In the 1960's and 1970's extensive investigations of selectivity, directed by Strzyzewski (1971) covered ... on the outside from the top down to the middle of its height with a cover having relatively small meshes (mesh ... , Walerian and W. STRZYZEWSKI. 1960. Selektywnosc poszczegolnych czesci worka wloka dorszowego. Prace MlR ... Paper Title: Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds ... Abstract / Description: Selectivity studies were carried out for two types of steelon codends used in ... commercial fishery, with a nominal mesh size A = 80 mm and A = 100 mm, made of double twines with a thickness ... of 4.2 mm. The studies covered 6 major fish species. It appears from the study that Antarctic icefish ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Author(s): Zaucha, J.
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An impact assessment framework for bottom fishing methods in the CAMLR Convention Area
can result in unexpected gear movement on the ocean floor or gear loss requiring improvised recovery ... preliminary assessment of bottom fishing impacts for the 2008/09 toothfish longline fishery. This paper ... illustrates the utility of the standardised approach and provides a methodological template for systematic ... necessary component of a full ecological risk assessment. File: 10sharp-et-al.pdf ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Author(s): Sharp, B.R., S.J. Parker and N. Smith
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
notablement di fgrentes , e n comparant l'annee a la densite moyenne la plus elevee (1977/78) aux autres ... countercurrents flow from east to west in nearshore waters. The spawning stock is found north ... succession of size/age groups occurs in the area (Siegel, 1988). To the east of Elephant Island ... "S, approximately from the tip of the Peninsula to the east; often they are found over the northern shelf ... Paper Title: Long-term monitoring of krill recruitment and abundance indices in the Elephant ... for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... an analysis of variance. File: 02siegel-etal.pdf ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Author(s): Siegel, V., W. de la Mare and V. Loeb
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Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)
stainless steel set line in McMurdo Sound (78°S 167°Ε) have been tagged and released since 1972 (DeVries ... Paper Title: Evidence to support the annual formation of growth zones in otoliths of Antarctic ... annually in the otoliths of this species. However, no evidence to validate this assumption has previously ... translucent zone is formed annually in otoliths of juvenile D. mawsoni. Mean fish lengths at ages 0.5, 1.5 ... estimates agree with growth curves calculated previously from a sample of data that was large but lacked any ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 125–138 : Author(s): Horn, P.L., C.P. Sutton and A.L. DeVries
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Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic
to Antarctic krill, 1972/ 73 to 1982/83. In: Selected Scient i f ic Papers, 1982-1984, Part I. CCAMLR ... Paper Title: Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... operations in the Atlantic sector of the Antarctic Abstract / Description: Catch per unit effort (CPUE) data ... differ between subareas, years and shelf/oceanic regions. Obviously, a consistent pattern of CPUE values ... 1980/81, whereas the lowest CPUE occurred in Subarea 48.3 in 1977/78. The validity of the CPUE index is ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Author(s): Siegel, V., V. Sushin and U. Damm
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Is the attempt to estimate the biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited
and 2002 large catches (>1 000 kg/30 min) were taken over the shelf to the east-northeast of South ... of Elephant Island to the east of Seal Rocks in 1985 (Figure 3c). This concentration consisted of fi sh 34 ... coast of Elephant Island to the east of Seal Rocks in February 1985, when fi shing was no longer ... Paper Title: Is the attempt to estimate the biomass of Antarctic fish from a multi-species survey ... already heavily fished at the beginning of the 1970s. The closure of the fishery for this species in 1985 ... was one of the first conservation measures adopted by CCAMLR. Fish biomass within a CCAMLR subarea or ... part of a subarea is commonly estimated from surveys that target a number of species, including N ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 141–153 : Author(s): Kock, K.-H., M. Belchier and C.D. Jones
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Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3)
to the 1° x 0.5° grid squares shown in Figure 3. Depth bin (m) Grid no. North east corner °S °W 0– 50 50 ... and were pooled.) Depth bin (m) Grid no. North east corner °S °W 0– 50 50 –1 00 10 0– 15 0 15 ... Paper Title: Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR ... variety of primary sources including multi-beam swath bathymetry. Sea floor area (km 2 <500 m depth ... , the reliability of existing sea floor area estimates was found to vary spatially and between different ... should be used for future assessments and for assisting with the stratification of surveys. File ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 167–175 : Author(s): Belchier, M. and P. Fretwell
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Small scale krill surveys: simulations based on observed euphausiid distributions
of the earlier surveys, however, were run with the main transects running east-west. This survey design ... of movement of individual swarms is shown by arrows and in general is east-west. The distributions are shown ... Abstract / Description: An observed distribution of aggregations of the euphausiid, Meganyctiphanes ... norvegica is used to model the effects of krill swarm orientation and shape on the success of two proposed ... survey designs. The simulation involves a number of random paths of parallel or radially arranged ... transects passing through three distributions each of which is given four rotations. The results indicate ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 245–256 : Author(s): Agnew, D.J. and S. Nicol