Résultats de la recherche

1. Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991

   Georgia in January/February 1991 Abstract / Description:  The diet composition and feeding intensity of ... 877 stomachs collected at 44 stations. Both the proportion of krill (Euphausia superba) in the ... Paper Title:  Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South ... stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the ... analysed in 3 877 stomachs collected at 44 stations. Both the proportion of krill (Euphausia superba) in ... areas of krill concentrations. In years of low krill abundance it is replaced in the diet by the ... in the face of food shortage an adaptative strategy is to sacrifice egg production and maintain body ... intensity of mackerel icefish in January/February 1991 which may aid in understanding the irregularities in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Auteur(s): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski

2. A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia

   substantial differences, due in part to bias arising from a large number of krill in just one of the station ... %), while between 1994 and 1998 the number of 1+ krill found in the population increased with a very ... Paper Title:  A composite recruitment index to describe interannual changes in the population ... net hauls. Therefore, when the number of station net hauls is limited, bias is likely to be reduced if ... RECRUITMENT INDEX TO DESCRIBE INTERANNUAL CHANGES IN THE POPULATION STRUCTURE OF ANTARCTIC KRILL AT SOUTH ... differences, due in part to bias arising from a large number of krill in just one of the station net hauls ... %), while between 1994 and 1998 the number of l + krill found in the population increased with a very ... be derived. In comparison to the surveys carried out by Siegel et al. (1998), the number of station ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Auteur(s): Watkins, J.L

3. Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia

   Paper Title:  Long-term trends in the foraging patterns of female Antarctic fur seals at South ... as starving/suckling layers in the teeth of their pups. A collection of unmarked Antarctic fur seal ... showed that between 1962 and 1981 the mean number of feeding trips made by female fur seals varied ... markedly. From 1962 to 1979 there were several significant increasing and decreasing trends in the mean ... 1962 to 1979 there were several significant increasing and decreasing trends in the mean number of ... -TERM TRENDS IN THE FORAGING PATTERNS OF FEMALE ANTARCTIC FUR SE!\LS AT SOUTH GEORGIA* 1 J.L ... starving/suckling layers in the teeth of their pups. A collection of unmarked Antarctic fur seal teeth ... between 1962 and 1981 the mean number of feeding trips made by female fur seals varied markedly. From ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Auteur(s): Bengtson, J.L.

4. Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of Antarctica

   analysis of the most informative subset of nuclear genetic markers of SNP variation presented in Kuhn and ... Gaffney (2008), do not support genetic differentiation of samples from the Ross Sea. Discrepancies in the ... Paper Title:  Low genetic diversity and temporal stability in the Antarctic toothfish ... data on the DNA analysis of recent (2011–2013) samplings of Antarctic toothfish (Dissostichus mawsoni ... analysis of the most informative subset of nuclear genetic markers of SNP variation presented in Kuhn and ... Gaffney (2008), do not support genetic differentiation of samples from the Ross Sea. Discrepancies in the ... aim of this investigation was to evaluate the population structure of D. mawsoni in the Antarctic ... samples for genetic analysis were fixed in 96% ethanol on board the fishery vessels. Details of the ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 1–9 : Auteur(s): Mugue, N.S., A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev

5. Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)

   Paper Title:  Standardization of fishing effort for Champsocephalus gunnari in the South Georgia ... the values selected to standardize the model. The mean coefficient of variation for the CPUE values ... inflexible in its use of data types and has no estimate of accuracy. A standardized CPUE index for ... to solve the model and the resultant yearly standardized CPUE shows the same trends independent of ... . In the abovementioned paper fishing effort was standardized in the following way. A certain type of ... vessel was selected as standard and, on the basis of information recorded in the STATLANTB form, a ... heterogeneity of the fishery. When this method is in practical use, an index of accuracy is not defmed. The ... references, is the relative power of the Jith category in the i lb category type, is 1, if U is pertinent ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Auteur(s): Gasiukov, P.S.

6. Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)

   Paper Title:  Observations on haul-out patterns and trends in the breeding populations of southern ... intrinsic population growth rate is positive. In 1982, at Stranger Point, a sharp decrease of the female ... were taken into consideration: haul-out pattern and the female population trend. In both places, the ... component of the population was observed (r=-56.54%). The recovery of the population at Stranger Point, and ... PATTERNS AND TRENDS IN THE BREEDING POPULATIONS OF SOUTHERN ELEPHANT SEAL AT PENINSULA VALDES (PATAGONIA ... PATTERNS AND TRENDS IN THE BREEDING POPULATIONS OF SOUTHERN ELEPHANT SEAL AT PENINSULA VALDES ... be used in the popUlation estimation of females from these two breeding places. - 456 - The ... the female component of these populations. A first step in analysing this hypothesis was to compare ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Auteur(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli

7. Status of the krill stock around Elephant Island in 1991/92 and 1992/93

   Paper Title:  Status of the krill stock around Elephant Island in 1991/92 and 1992/93 Abstract ... / Description:  Krill stock composition and distribution patterns in the vicinity of Elephant Island during the ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... . The general distribution of krill length and maturity classes conformed to previous descriptions and ... patterns in the vicinity of Elephant Island during the austral summers of 1991/92 and 1992/93 are ... of the krill stocks in the Antarctic Peninsula region. The length frequency distributions and ... Island (Nast, 1986) and support one of the major commercial fisheries in the Atlantic sector of the ... results of krill research conducted in the vicinity of Elephant Island under the US AMLR Program. It ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Auteur(s): Loeb, V. and V. Siegel

8. Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3

   differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... Paper Title:  Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3 ... curve hooks No. 14 and straight hooks No. 22. The general mean value of M calculated for the 44 analysed ... (1989) from the data obtained during the Chilean longline fishery in Subarea 48.3 (N = 7 848. The von ... . DOROVSKIKH and K.V. SHUST, 1991. Assesment of the Dissostichus eleginoides stock in subarea 48.3 for the ... longline fishery of Dissostichus eleginoides (Nototheniidae) off the chilean coast. In: Selected ... . Report of the Working Group on Fish Stock Assessment. In: Report of the Ninth Meeting of the Scientific ... . DOROVSKIKH and B.A. KENZHIN. 1990. The state of Dissostichus eleginoides stock and TAC for 1990/91 in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Auteur(s): Moreno, C.A. and P.S. Rubilar

9. Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)

   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 ... were re-calculated applying the delta distribution approach introduced by de la Mare (1994a). The high ... (marked with A in Tables 1 and 2 are not included in the calculation of the mean, because the small ... MONITORING OF KRILL RECRUITMENT AND ABUNDANCE INDICES IN THE ELEPHANT ISLAND AREA (ANTARCTIC PENINSULA) V ... bootstrap replication (Efron and Gong, 1983). The statistical significance of observed variation in krill ... . Figure 1 gives a conceptual view of the seasonal variation. Krill abundance/density is low in the ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Auteur(s): Siegel, V., W. de la Mare and V. Loeb

10. Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993

    Paper Title:  Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993 Abstract ... / Description:  Acoustic estimates of krill biomass in the vicinity of Elephant Island are presented for the ... years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... previous reports adjusted for the recently proposed definition of krill target strength (Greene et al ... 92093, USA (Supported by the Hertz Foundation) Abstract Acoustic estimates of krill biomass in the ... estimates of krill biomass in the vicinity of Elephant Island was presented as part of a working paper ... describing acoustic surveys conducted in the area during the austral summer of 1992 (Hewitt and Demer, 1993 ... ) estimated that 2.1 million tonnes of krill were aggregated in a large swarm located over the shelf break ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Auteur(s): Hewitt, R.P. and D.A. Demer

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