Resultados de la búsqueda
-
The survivorship of rays discarded from the South Georgia longline fishery
Abstract: Skate post haulage survival experiments were conducted by one Chilean fishing vessel throughout the months of May and June, during 2003 toothfish fishing season in Subarea 48.3. From these results we can conclude that depth has a significant influence on the mortality of skate, with a
Meeting Document : WG-FSA-03/57 : Autor(es): M. Endicott and D.J. Agnew (United Kingdom)
-
By-catch of rays in the 2002/03 toothfish fishery around South Georgia
Abstract: The 2002/2003 fishing season was the first in which three new policies for rays were tried: • It was the first in which vessels were asked to cut off all rays at water level to assist survival and conservation of rays; • It was the first in which very good quality information was
Meeting Document : WG-FSA-03/58 : Autor(es): D.J. Agnew, J. Pearce and M. Endicott (United Kingdom)
-
Skate captures during the 2003 South Georgia research survey
Author(s): M. Endicott (United Kingdom) Title: Skate captures during the 2003 South Georgia research survey Approval: Approved
Meeting Document : WG-FSA-03/59 : Autor(es): M. Endicott (United Kingdom)
-
Diet of two icefish species from the South Shetland Islands and Elephant Island, Champsocephalus gunnari and Chaenocephalus aceratus 2001–2003
Abstract: The summer diet of two species of icefishes (Channichthyidae) from the South Shetland Islands and Elephant Island, Champsocephalus gunnari and Chaenocephalus aceratus, was investigated from 2001 to 2003. C. gunnari fed almost exclusively on krill (Euphausia superba) in all years. The
Meeting Document : WG-FSA-03/61 : Autor(es): H. Flores, K.-H. Kock, S. Wilhelms (Germany) and C.D. Jones (USA)
-
Otolith microstructure of juvenile fish, the first annulus radius and pelagic stage duration of icefish Champsocephalus gunnari (Channichthyidae) in the South Georgia area
Abstract: On the basis of the results of the trawl-acoustic survey in February-March 2002, the microstructure analysis of otoliths of juvenile icefish of 5.5-13.3 cm in length was carried out. Fish studied represent a mixture of two year-classes of 1999-2000 and 2000-2001. The mean width of the
Meeting Document : WG-FSA-03/75 Rev. 1 : Autor(es): L.V. Shcherbich (Russia)
-
A tagging protocol for toothfish (Dissostichus spp.) in the Ross Sea
Abstract: This paper presents a protocol for the tag and release of toothfish (Dissostichus sp.) by fishers operating in the Ross Sea longline fishery in 2003-04. The protocol describes tag types, tag treatments and data recording requirements for the programme. Examples of reporting forms for
Meeting Document : WG-FSA-03/90 : Autor(es): N.W.McL. Smith and K.J. Sullivan (New Zealand)
-
Operational interactions between cetaceans and the Patagonian toothfish (Dissostichus eleginoides) industrial fishery off Southern Chile
Abstract: Operational interactions between marine mammals and the Patagonian toothfish (Dissostichus eleginoides) fishery were assessed in southern Chile through 7 surveys with observers on board industrial vessels between April 2002 and March 2003. Sperm whales (Physeter macrocephalus) occurred
Meeting Document : WG-FSA-03/95 : Autor(es): R. Hucke-Gaete, C.A. Moreno and J.A. Arata (Chile)
-
Integrating CPUE with the GY model: examination of the effects of shortening the CPUE series and incorporating elements of uncertainty into the D. eleginoides assessment of Subarea 48.3
Abstract: This year the Subgroup on assessment methods (SAM) requested that WG-FSA consider whether a shorter CPUE time-series would be preferable for use in its annual assessments. (WG-FSA-03/40 2003, paragraph 2.27). This paper explores some of the consequences of shortening the dataset in the
Meeting Document : WG-FSA-03/96 : Autor(es): I.R. Ball, S. Candy and A.J. Constable (Australia)
-
Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity
Abstract: The Age-Structured Production Model (ASPM) presented to previous meetings is refined to allow the estimation of a selectivity-at-age function that decreases at larger ages. This is, in particular, to accommodate the view of the August 2003 meeting of the Subgroup on assessment methods
Meeting Document : WG-FSA-03/97 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)
-
Analysis of longline fleet operation on the Patagonian toothfish (Dissostichus eleginoides) in the subarea of the South Georgia Island (48.3) in 1989–2003
Abstract: The main characteristics of Patagonian toothfish (Dissostichus eleginoides) catch dynamics off the South Georgia Island and Shag Rocks (sub-area 48.3) for the 1989-2003 period are given. Taken the intensity of fleet operation as an example in the sub-area, it was confirmed a decrease in
Meeting Document : WG-FSA-03/98 : Autor(es): N.V. Kokorin and A.F. Petrov (Russia)