Search results
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Maturity stages for skates (Rajiformes)
, important elements of the reproductive cycle may go unrecorded, including females in the process of egg ... -laying. Additionally, the current description of females at stage 2 (maturing) in the CCAMLR observer ... updating the descriptions of the maturity stages for skates are provided, as is a rationale for considering ... a four-stage key that allows for the collection of data for fish that are at active stages of the ...
Meeting Document : WG-FSA-14/33 : Author(s): J.R. Ellis, S.R. McCully Phillips and V. Laptivovsky (United Kingdom)
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CEMP 2018/19 data and updated spatial analysis of Area 48
Abstract: This paper reports on the CCAMLR Ecosystem Monitoring Program (CEMP) data submissions ... for the 2018/19 monitoring season detailed by site and species, and includes an update to the Combined ... Standardised Index (CSI) analysis from 2018 for Area 48. The CSI analysis is a method used to examine spatial ... patterns of inter-annual variability of the response by krill-dependent predators to changes in the ...
Meeting Document : WG-EMM-2019/04 : Author(s): CCAMLR Secretariat
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Conversion Factors used for Patagonian toothfish in Division 58.5.1. and Subarea 58.6
weight and thus assess the amount of fish withdrawn from the stock. This paper describes factors ... influencing conversion factor using data collected on Patagonian toothfish within the French EEZ, results ... emphasise the need to calculate CF with a sub-sample of the catch that is representative of the total catch ... in terms of size, space and time. It also looks at the size of sub-sample used for conversion factor ...
Meeting Document : WG-FSA-15/77 : Author(s): N. Gasco (France)
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CEMP indices 2004: analysis of anomalies and trends
Abstract: The CCAMLR Ecosystem Monitoring Program uses indices derived from data on indicator ... species and the environment collected by standard methods within the three Integrated Study Regions of the ... Convention Area. Each year the Secretariat updates the standardised index values and provides a summary of ... trends and anomalies in these data. In addition, developments during the intersessional period are ...
Meeting Document : WG-EMM-04/14 : Author(s): Secretariat
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Report of activities performed under support of CCAMLR Scientific Scholarship in 2019
Abstract: A list of events attended by the Scholarship holder for 2019 with the support of the ... CCAMLR Scientific Scholarship is presented. The types of work that have been completed and the knowledge ... that is planned to be acquired during the visit to the Mentor are presented. Author(s): I. Slypko ...
Meeting Document : SC-CAMLR-38/BG/23 : Author(s): I. Slypko
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Catch removals due to killer and sperm whale interactions across sub-Antarctic fisheries
marine predators. These species, depredating on catches directly on the fishing gear, has emerged as ... investigated the extent of this conflict in multiple commercial Patagonian toothfish (Dissostichus eleginoides ... Ocean), the South West Atlantic, Prince Edward and Marion Islands, Crozet Islands, Kerguelen Islands ... , and Heard Island and McDonald Islands (Indian sector of the Southern Ocean) fisheries, statistical ...
Meeting Document : WG-FSA-2019/33 : Author(s): P. Tixier, P. Burch, F. Massiot-Granier, P. Ziegler, D. Welsford, M.-A. Lea, M.A. Hindell, C. Guinet, S. Wotherspoon, N. Gasco, C. Péron, G. Duhamel, R. Arangio, R. Tascheri, S. Somhlaba and J.P.Y. Arnould
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Summary of holdings of Patagonian toothfish (Dissostichus eleginoides) otoliths and size-at-age estimates from Heard and McDonald Islands (Division 58.5.2)
Abstract: Scientific observers aboard vessels in the Australian fisheries in 58.5.2 have ... collected Dissostichus eleginoides otoliths since the fishery commenced in the 1996/97 season. This program ... this Division. This paper summarises the otolith collection housed at the Australian Antarctic Division ... individuals which have been processed by the Central Ageing Facility to provide size-at-age estimates. Over ...
Meeting Document : WG-FSA-07/45 : Author(s): D.C. Welsford and G.B. Nowara (Australia)
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Spatial and temporal variability in foraging patterns of krill predators at Signy Island and South Georgia
Abstract: While constrained by the requirement to feed their young, land-based marine predators ... . In a system where the distribution and abundance of prey is highly variable, foraging behaviour must ... be highly adaptable. In this paper we consider the behaviour of seal and seabird krill-dependent ... species to determine whether foraging is more intense close to the colony, or whether it is more widely ...
Meeting Document : WG-EMM-02/33 Text : Author(s): P.N. Trathan, J.L. Tanton, A.S. Lynnes, M.J. Jessopp, H. Peat, K. Reid and J.P. Croxall (United Kingdom)
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On dispersion of different pelagic organisms, forming Antarctic backscattering in South Sandwich subarea during January–February 2000
Abstract: In the paper these have been discussed the results of acoustic estimation of ... groups of pelagic organisms. One can reveal, basing on the results of surveying, the influence of water ... layers as follows: krill predominatingly contributes to the antarctic pelagic community within proving ... ground locations occupied by the Weddell Sea waters and Frontal Zone of Weddell Gyral waters; myctophid ...
Meeting Document : WG-EMM-01/61 : Author(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Krill caught by predators and nets: differences between species and techniques
during February 1986 at South Georgia were compared to krill from scientific nets fished in the area at ... the same time. The length-frequency distribution of krill was broadly similar between predators and ... nets although the krill taken by diving species formed a homogeneous group which showed significant ... differences from krill taken by other predators and by nets. There were significant differences in the ...
Meeting Document : WG-EMM-96/09 : Author(s): Hill, H.J., Reid, K., Trathan, P.N., Croxall, J.P.