Resultados de la búsqueda
-
AN ASSESSMENT OF ARTIFICIAL BAIT (NORBAIT™) AS A MEANS OF REDUCING THE INCIDENTAL CATCH OF MACROURUS AND OTHER BYCATCH SPECIES IN HIGH LATITUDE TOOTHFISH FISHERIES
to assess basic requirements such as ease of use, bait longevity on the hook, and catchability ... incidental species. This is a preliminary report based on subsequent trials carried out aboard the vessel San ... were set in both Subareas; a total of 137,000 experimental hooks. The evaluation was based on ... alternating sections (magazines or mags- there are approximately 1024 hooks per magazine on San Aspiring) of ...
Meeting Document : WG-FSA-08/52 : Autor(es): J.M. Fenaughty (New Zealand)
-
An assessment of toothfish in Subarea 48.3 using CASAL
frequencies, and a poor fit to the CPUE data, for which an even higher process error CV was estimated (0.46 ... ). For the baseline assessment incorporating two fleets, the 2005 vulnerable biomass was estimated to be ... , the estimated long term yield is 4910 t for the baseline two-fleet assessment, while for the one-fleet ... Abstract: The CASAL software has been successfully applied to an assessment of the stock of ...
Meeting Document : WG-FSA-05/16 : Autor(es): R.M. Hillary, G.P. Kirkwood and D.J. Agnew (United Kingdom)
-
An exploration of the biological data used in the CCAMLR Subarea 48.3 Patagonian toothfish stock assessments
Abstract: WG-FSA 2018 noted that changes in productivity parameters may impact assessment ... . Author(s): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby Title: An exploration of the ... Consent: No Delegation responsibility for releasing documents: United Kingdom ...
Meeting Document : WG-SAM-2019/32 : Autor(es): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby
-
Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal
including one individual in two separate years. Whilst the sample size is small the results represent an ... habitat associations, taking into account location errors, indicated the tracked seals had an affinity for ... changed throughout the year with the highest values occurring during the summer which has implications for ... Abstract: Leopard seals are an important Antarctic apex predator that can affect marine ...
Meeting Document : WG-EMM-18/P09 : Autor(es): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada
-
An acoustic estimation of krill densities to the north of South Georgia in January 1994
Abstract: Dual frequency (38 and 120 kHz) acoustic surveys were carried out in two regions along ... signal strength between the two frequencies (δMVBS = MVBS 120 kHz- MVBS 38 kHz) was used to discriminate ... provide further evidence of an extreme krill paucity around South Georgia in the 1993/4 season. Author(s ... ): Watkins, J.L., Brierley, A.S. Title: An acoustic estimation of krill densities to the north of South ...
Meeting Document : WG-EMM-95/74 : Autor(es): Watkins, J.L., Brierley, A.S.
-
Do Adélie penguin fledgling weights provide an index of prey availability?
. The concerns raised by Williams and Croxall (1990) that fledgling weight may increase with an ... Abstract: We examine fledgling weights measured over 11 years at Béchervaise Island in relation ... to two assumed proxies of prey availability: breeding success and foraging trip duration. Concordance ... between the two proxies was apparent when considering guard stage foraging trip durations but this was not ...
Meeting Document : WG-EMM-05/21 : Autor(es): L. Emmerson, C. Southwell and J. Clarke (Australia)
-
Towards an assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea: data from predators
. Martialia probably has a life span of two years and a circumpolar distribution but its biology and ecology ... Abstract: Cephalopod fisheries world-wide mainly target species from two families, Loliginidae ... and Ommastrephidae. Fisheries for the latter have been characterised by dramatically fluctuating ... squid is an important component of the diet of several species of albatross and the southern elephant ...
Meeting Document : SC-CAMLR-IX/BG/13 : Autor(es): Delegation of United Kingdom
-
An updated information of the Japanese krill fishery in the Antarctic
of two different type of operation. Operated areas in 1983/84 and 1984/85 seasons were illustrated ... and three historical main fishing grounds were identified. Author(s): Y. Shimadzu (Japan) Title: An ...
Meeting Document : WS-KCPUE-85/05 : Autor(es): Y. Shimadzu (Japan)
-
Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric parameter?
Abstract: In sexually dimorphic species, morphometric parameters have separate distributions for ... sex of individuals, it is only able to correctly sex a certain proportion of birds. Two overlapping ... normal distributions are used to show that there is a difference between the real mean parameter for a ... . Combining all data for both sexes is considered as a procedure for avoiding the necessity of sex ...
Meeting Document : WG-CEMP-92/11 : Autor(es): D.J. Agnew (Secretariat)
-
An attempt to derive a composite index of abundance from acoustic surveys and fishery data
composite index of krill abundance (SC-CCAMLR-VIII, 1989) were derived for two surveys from these data sets ... distribution of fishing effort in the Chilean krill fishery indicate an area of high krill density wrapping ... end of the island. Author(s): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA) Title: An ...
Meeting Document : WG-Krill-94/14 : Autor(es): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)