Résultats de la recherche

1. Joinville–D’Urville Islands (Subarea 48.1) – a former fishing ground for the spiny icefish (Chaenodraco wilsoni), at the tip of the Antarctic Peninsula – revisited

   two concentrations of C. wilsoni at 62°20’–62°30’S 55°30’–56°00’W in the northern part of the shelf ... the west. Two- to four-year-old fi sh lived pelagically at 20–120 m over depths of 200–400 m ... . Ikthiol., 20 (4): 644–655. Translated as J. Ichthyol., 20 (4): 50–60. -63° 0' -62°30' -62° 0' -61°30 ... – D’Urville Islands in January 1978 to May 1979. 0 5 10 15 20 25 30 0 5 10 15 20 25 30 35 Length ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 1–20 : Auteur(s): Kock, K.-H., L. Pshenichnov, C.D. Jones, K. Shust, K.E. Skora and Zh.A. Frolkina

2. Estimates of fish stock biomass around South Georgia in January/February 1985

   reduction in stock size to 10 – 20% of that estimated before the onset of heavy fishing. In C. gunnari the ... fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... were seen domi na ted by 3 years old. fish (age class II) which is presumably the recruit i ng year ... in stock size to 10 ~ 20% of that estimated before the onset of heavy fishing. In C. gunnari the ... fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... et C. gunnari. Les estimations de biomasse indiquent une reduction de 10-20% du stock - 2 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Auteur(s): Kock, K.-H.

3. Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   stage for at least one year. Individual oocytes are then recruited into the vitellogenic phase over at ... maturation stage by approximately May each year. The age at 50% spawning for females on the Ross Sea slope ... region is 16.6 years (95% CI 16.0–17.3) or 133.2 cm (95% CI 130.9–135.7) by length. On average, males ... spawn at a younger age with an A 50% of 12.8 years (95% CI 11.9–14.0) or 120.4 cm (95% CI 114.8–126.7 ... Age (years) 0 10 20 30 ... f fi sh Age (years) 5 10 15 20 25 30 ... histograms. Diameter (um) Fr eq ue nc y 0 500 1000 1500 2000 2500 0 10 0 20 0 30 0 40 0 n= 28 ... L50% for the hindcast ogive. 0 10 20 30 40 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Age (y) P ro po rti ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Auteur(s): Parker, S.J. and P.J. Grimes

4. Beyond MSY: a consideration of definitions of management objectives

   Article II of the CCAMLR Convention. The criteria will depend on whether the main concern is with ... nominal effort each year, based on the values of F and fishing effort in the most recent years. Since ... rate of fishing that gives GNAI. Good recruiting year-classes can be fished harder than weak ones ... that varies about the constant recruitment optimum, being lower when a strong year-class has just ... yield that can be sustained is one corresponding to full exploitation of the weaker year-classes ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Auteur(s): Gulland, J.A.

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

   work on this species. Von Bertalanffy growth models assuming different growth by sex and by year-within ... mean total length-at-maturity (38.8 and 46.4 cm) and mean age-at-maturity (10.6 and 13.6 years) are ... and 30 years old in the second reading. Males Females 0 10 20 30 ... 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 ...

   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

6. Distribution of mackerel icefish (Champsocephalus gunnari) (Channichthyidae) around South Georgia at various stages of its life cycle

   / 19 86 L en gt h ra ng e (m m ) 60 –1 30 80 –1 30 60 –1 40 70 –1 20 M od al le ng th ... (i.e. by 3 years old) most C. gunnari migrate northwards, where they remain for most of the year ... from time to time an entire year class may be absent from catches taken over several years (Frolkina ... May–June. The time of spawning relates to the temperature regime of the year, i.e. in warmer years ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 49–69 : Auteur(s): Frolkina, Zh.A

7. Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics

   80 60 40 20 0 10 20 30 40 50 60 70 Age (years ... – male M. whitsoni – female M. caml – male M. caml – female 60 50 40 30 20 10 0 N um be r o ... 80 60 40 20 30 40 50 60 70 80 90 TL (cm ... 0.5 0.4 0.3 0 10 20 30 40 50 60 70 (c) (a) 100 ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 15–28 : Auteur(s): Pinkerton, M.H., C. Ó Maolagáin, J. Forman and P. Marriott

8. Brief comments on the simulation study made by Professor Butterworth on krill fishing by an individual Japanese trawler

   questions are raised concerning the simulation study of the Japanese krill fishery carried out by ... Abstract In this paper, three essential questions are raised concerning the simulation study of the ... , the demand for each product can be seen to change from year to year. We do, therefore, agree with him ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 347–350 : Auteur(s): Ichii, T. and Y. Endo

9. Environment–krill relations in the South Georgia marine ecosystem

   were only expressed strongly in years of extreme conditions. The correlation with water temperature was ... longitudes 20°, 30°, 40' and 50°W. For the period 1973 to 1989, a further sea-ice dataset was available ... -72 0 Year Figure 7: Interannual variation in ice-edge position. 1 - at 30°W in October; 2 - at ... : (a), (b), (c) - in the same year; (d) - ice-edge position at 30°W averaged for December-January and ... ) 0 0 c 70 0 . 5 60 O 8 2 S 5 0 ~ O o 0 W 4 0 - 3 0 r = 0.57 8 30 , 20 - (b) 0 ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Auteur(s): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky

10. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

    H 302 14 4.6 46 15.2 0 0 I 319 14 4.4 78 24.5 20 6.3 J 712 30 4.2 119 16.7 14 2 K 346 12 3.5 18 ... –20 12 6.5 21–30 2 1.1 Table 4: The times at which interactions occurred with killer whales ... hauling site. Observers reported that when vessels steamed away for between 20 and 30 n miles, killer ... ) reported that between 1 and 12 tooth- fi sh, ranging in size from 70 to 130 cm (4 to 20 kg) were found in ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Auteur(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

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