Search results
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Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics
fishery in the Ross Sea region is comprised of two species, rather than being solely Macrourus whitsoni ... importance of grenadiers as prey to toothfish, a method of distinguishing between otoliths of the two species ... the two species (92% success). A method was also developed to discriminate between otoliths of M. whitsoni ... of the two species of grenadier. Models to estimate fish length, weight and age from otolith parameters ... 80 60 40 20 0 10 20 30 40 50 60 70 Age (years ... = Macrourus whitsoni. WG2 = M. caml. One specimen of M. caml could not be sexed. A two-sided t-test ... years, M. caml takes more than 30 years Table 4: Discriminant analysis results using otolith ... shown on x-axis). 60 50 40 30 20 10 0 N um be r o f fi sh 37 42 47 ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 15–28 : Author(s): Pinkerton, M.H., C. Ó Maolagáin, J. Forman and P. Marriott
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Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys
and Shag Rocks in the period investigated, except in 1994, when the order of importance of these two ... and Thysanoessa sp., which are known to be important alternative food in years of krill scarcity, as well as fish ... , was only occasional or negligible and varied from year to year. The spatial distribution of the main prey ... 48.3, did not show a consistent pattern from year to year. Likewise, in the four surveys by the Dr ... , 1995). In 1996 and 1997 fish between 16 and 20 cm predominated; in 1997 a peak between 25 and 30 cm ... to calculate length distributions. These two association coefficients were not significant in both years ... (ranges 12-20 cm/l-2 years) was found in the catches during the RV Dr Eduardo L. Holmberg surveys over ... of C. gt~nnari was the lowest registered for cruises carried out over the last 30 years, even lower than ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Author(s): Barrera-Oro, E., R. Casaux and E. Marschoff
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Krill fishing in the Scotia Sea in relation to bathymetry, including the detailed distribution around South Georgia
in the following two seasons. In 1994 the fishery was almost totally based over a large shallow bank area ... to an area on the western edge of the shelf break where negligible fishing occurred in the following two ... operated in water depths of about 200 and 500 m over a restricted area of about 30 x 20 km. There were ... of 1993/94 (Brierley and Watkins, 1996). Thus, years of low krill availability may be the ones in which ... greater than 4 tonnes have been reported in a CCAMLR reporting quarter of the year on at least one ... made in a CCAMLR reporting quarter of the year on at least one occasion (shaded areas) or on more than ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 1–17 : Author(s): Murphy, E.J., P.N. Trathan, I. Everson, G. Parkes and F.H.J. Daunt
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Use of indices of predator status and performance in CCAMLR fishery management
of likely operational constraints on fisheries. File: 20-Croxall.pdf ... reversal of the situation within two to three decades (as required by Article 11 of the Convention). We ... HcnoJib30BaHbi AHTKOMoM npH ynpasJieHHH KOMMept~ecKHM npoMbiCJIOM. B ~oKyMeHTe paccMaTpHBaiOTC5I npHliHHbi ... , no KOTOpbiM AHTKOMy cJie~yeT B ocpHI..\HaJibHOM nop5I.l(Ke HcnoJib30BaTb TaKHe ~aHHbie npH ynpasJieHHH ... en Ios dates del CEMP, segun las perspectivas de pesca y tambien del seguimiento de animales ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 353–365 : Author(s): Croxall, J.P.
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The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery
. Birds feeding chicks also made journeys of one to two days ranging up to 12 km after 17 January when ... journeys of one to two days ranging up to 12 km after 17 January when the sea became ice free to the coast ... determined by satellite tracking using the ARGOS system. Birds were tracked over four foraging trips (two ... females and two males) throughout January 1992 when birds were feeding chicks. Most birds made foraging ... chicks also made journeys of one to two days ranging up to 12 km after 17 January when the sea became ... by satellite tracking using the ARGOS system. Birds were tracked over four foraging trips (two females ... and two males) throughout January 1992 when birds were feeding chicks. Most birds made foraging trips ... Orkney Islands and reflects the distance offshore of krill, one of their major food sources. Resume ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Author(s): Kerry, K.R., J.R. Clarke and G.D. Else
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Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
consumed is between 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million tonnes ... in the Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from trawl ... for a depth range of 100 to 500 metres in waters between 30 and 80°E. Krill consumption was estimated ... consume from 30 to 32 million tonnes (Lubimova, Shust, 1980 and Shust, 1987). However these extrapolated ... 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million tonnes (Lubimova ... in the Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from trawl ... for a depth range of 100 to 500 metres in waters between 30 and 80°B. Krill consumption was estimated ... , dont 30 a 32 sont consommees par des poissons (Lubimova and Shust, 1980; Shust, 1987). Cependant, i1 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Author(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk
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An assessment of the impact of krill fishery on penguins in the South Shetlands
(≥200 x 10 3 tonnes) and its variability (the order of 100 x 10 3 tonnes/10-20-day period), the present ... catch rate (≤10 x 10 3 tonnes/1O-day period) is smaller by one or more orders of magnitude within ... (≥200 x 103 tonnes) and its variability (the order of 100 x 103 tonnes/10-20-day period ... ), the present catch rate (≤10 x 103 tonnes/1O-day period) is smaller by one or more orders of magnitude ... FOR KRILL BIOMASS Estimates of krill biomass are available for grid squares of 20 X 20 or 30 X 30 n miles ... ) and its variability (the order of 100 X 103 tonnes/10-20-day period), the present catch rate (110 X 103 ... tonnes/lO-day period) is smaller by one or more orders of magnitude within the localised areas. Thus ... biomasse (2200 X 103 tonnes) et a sa variabilite (de l'ordre de 100 X 103 tonnes/periode de 10-20 jours ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Author(s): Ichii, T., M. Naganobu and T. Ogishima
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Mitigation of seabird captures during hauling in CCAMLR longline fisheries
/ Description: In recent years there has been an increased focus on reducing seabird captures that occur during ... suggest that there are two key aspects of effective BEDs, firstly that they provide a deterrent ... these two key functional characteristics into the specification of a BED to be deployed by longline vessels ... In recent years there has been an increased focus on reducing seabird captures that occur during ... Ltd 18 Queen Street, London W1J 5PN United Kingdom Abstract In recent years there has been ... collected by scientific observers since 2003 suggest that there are two key aspects of effective BEDs ... on this analysis, CCAMLR incorporated these two key functional characteristics into the specification of a BED ... . During that year, although there was zero mortality recorded dur- ing line setting in these fisheries ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 155–162 : Author(s): Reid, E., B. Sullivan and J. Clark
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Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea
/99 0 2 4 6 8 10 12 14 16 N u m b e r o f d e a d c h ic k s 0 10 20 30 40 ... 0 2 4 6 8 10 12 14 16 N u m b e r o f d e a d c h ic k s 0 10 20 30 40 50 60 70 80 ... 7/1 17/1 27/1 6/2 16/2 N u m b e r o f d e a d c h ic k s 0 10 20 30 40 50 60 70 80 ... : comparison between years. J. Anim. Ecol., 62: 634–646. Watanuki, Y., A. Kato, Y. Naito, G. Robertson ... Paper Title: Effects of weather and sea-ice on the reproductive performance of the Adélie penguin ... males on the second incubation trip. A high number of chicks died during the post-hatching stage and the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Author(s): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi
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Some principles for fisheries regulation from an ecosystem perspective
una tarea compleja que - 325 - irnplica el an.Hisis de sisternas. Se debate brevernente sobre la ... qeCTBOM, KOTOPbIM ,l(OJI~HbI 06JIa,l(aT b ,l(OnOnHHTeJIbHbIe I.{eJIH, .l1Bn.l1eTC.l1 TO, qTO' OHH Bblpa ... 06pa30M onpe,l(enHT b CTeneH b npH6nH~eHH.l1 K 3THM I.{en}lM. 06CYJK,l(aIOTC}l npeHM~eCTBa ... ~Ha.l1 3a,l(aQa, Tpe6~a.l1 Hcnonb30BaHH.l1 CHCTeMHoro aHanH3a. KpaTKO 06cym,l(aeTC.l1 nOJIb3a H3YQeHH ... Paper Title: Some principles for fisheries regulation from an ecosystem perspective Abstract ... regulation of fisheries from an ecosystem perspective, under the Convention for the Conservation of Antarctic ... Marine Living Resources. An important task in this formulation is to derive subsidiary objectives for ... out in the Convention. An important property required for subsidiary objectives is that they are ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 323-339 : Author(s): de la Mare, W.K.