Search results
-
Impacts of ocean acidification on Antarctic krill biology: preliminary results and future research directions
Abstract: This study reports some preliminary results of the impacts of Ocean Acidification due ... to elevated seawater pCO 2 on the activity, mortality, moulting of post-larval krill. Increased CO2 ... conditions in this study. Some practical approaches to observing and improving our understandings of the ... impacts of OA on Antarctic krill population are suggested. Author(s): S. Kawaguchi, T. Berli, R. King, S ...
Meeting Document : WG-EMM-12/32 : Author(s): S. Kawaguchi, T. Berli, R. King, S. Nicol, P. Virtue and A. Ishimatsu (Japan)
-
OCCURRENCE OF DWARF MINKE WHALES (BALAENOPTERA ACUTOROSTRATA SUBSP) AROUND THE ANTARCTIC PENINSULA
Abstract: The occurrence of dwarf minke whales (Balaenoptera acutorostrata subsp.) around the ... Antarctic Peninsula was examined based on 406 sightings of minke whales recorded during the Chilean ... Antarctic Scientific Expeditions and other opportunistic cetacean surveys. Identification of the species was ... made only for the whales sighted in the proximity of the vessels when the specific diagnostic ...
Meeting Document : WG-EMM-11/P2 : Author(s): J. Acevedo, C. Olavarría, J. Plana, A. Aguayo-Lobo, A. Larrea and L.A. Pastene
-
Results of the mark–recapture experiment in Subarea 48.3, 2005
– distributed over the whole of the fishable grounds in 48.3 this year. The Petersen mark-recapture estimator ... from 2004 and 2005 were very similar to each other, whichever selectivity was used: about 62,000 t of ... selectivity functions are more peaked than the Kirkwood shallow selectivity used in 2004. Estimates of ... of vulnerable biomass, resulted in consistent estimates of sustainable yield of about 4,800 t ...
Meeting Document : WG-FSA-05/17 : Author(s): D.J. Agnew and A. Payne (United Kingdom)
-
The recent decline in recruitment of Gobionotothen gibberifrons in the South Shetland Islands (CCAMLR Subarea 48.1)
Abstract: Commercial exploitation of fish stocks around Elephant Island and the lower South ... Shetland Islands ceased after the 1989/90 season. One of the larger and most abundant species in the area ... perturbations on a fish stock by recruitment failure as one of them. Data from the 1980’s and 1990’s (1983, 1985 ... recruitment of G. gibberifrons was normal. Recruitment began to decline substantially at the turn to the 2000 ...
Meeting Document : WG-FSA-12/20 : Author(s): K.-H. Kock (Germany) and C.D. Jones (USA)
-
CEMP cameras and satellite transmitters installation by Ukraine at the Galindez, Petermann, and Yalour Islands penguin colonies as a part of CEMP Fund projects
Station area on service of CEMP cameras and installation ARGOS satellite tags in penguin colonies as part ... of the CEMP projects run by USA, Argentina, Poland and Ukraine 'Establishing a CEMP Camera ... Network in Subarea 48.1' and 'Tracking the overwinter habitat use of krill dependent predators ... downloaded pictures of 2015/16 and 2016/17 seasons from cameras installed in penguine colonies at Petermann ...
Meeting Document : WG-EMM-17/21 : Author(s): G. Milinevsky, I. Dykyy, D. Lutsenko, O. Savitsky, A. Simon, M. Telipska, V. Lytvynov and L. Pshenichnov
-
Autoliners and seabird by-catch: do line setters increase the sink rate of integrated weight longlines?
effectiveness of line setters in increasing sink rates of IW longlines. Time-depth recorders were deployed along ... magazines of line set with and without a line setter using a paired treatment design. Sink rates of ... longlines set with and without a line setter were identical, including in the first few metres of the water ... several metres closer to the stern of vessels, thereby increasing slightly (Author(s): G. Robertson ...
Meeting Document : WG-FSA-07/13 : Author(s): G. Robertson (Australia), J. Williamson, M. McNeill (New Zealand), S. Candy (Australia) and N. Smith (New Zealand)
-
Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
Abstract: Juveniles of the macrourid rattail Macrourus whitsoni were collected by the NIWA ... research vessel Tangaroa during the BioRoss survey of the Western Ross Sea and Balleny Islands, with the ... purpose of analyzing the otoliths to generate more accurate age estimates for this species. Intensive ... analysis of otoliths from small specimens greatly increased confidence in the interpretation of the zone ...
Meeting Document : WG-FSA-05/20 : Author(s): P.M. Marriott, M.J. Manning and P.L. Horn (New Zealand)
-
Geographical differences in the condition, reproductive development, sex ratio, and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
Abstract: A number of morphological and reproductive measurements made seasonally on Antarctic ... seasons aboard the autoliner San Aotea II have been analysed. Results of this study indicate measurable ... differences in a number of indices from toothfish found on the Ross shelf proper, as distinct from those ... part of the Ross Sea showed that this component of the population had a unimodal length distribution at ...
Meeting Document : WG-FSA-05/52 : Author(s): J.M. Fenaughty (New Zealand)
-
The diet of Antarctic fur seals, Arctocephalus gazella, at King George Island, during the summer–autumn period
Abstract: The diet of non breeding male Antarctic fur seals, Arctocephalus gazella, was ... , krill and fish were the most frequent prey, occurring in an average of 97% and 69% of samples (n=128 ... ), followed by Cephalopods (12%). Myctophids constituted almost 90% of the fish predated, being Electrona ... fish species associated with krill swarms. A seasonal change observed in the relative proportions of ...
Meeting Document : WG-EMM-04/4 : Author(s): G.A. Daneri, A.R. Carlini, C.M. Hernandez and A. Harrington (Argentina)
-
Estimation of catch rate and mean weight in the exploratory Dissostichus fisheries across Divisions 58.4.1 and 58.4.2 using generalised additive models
these fisheries. Analyses of C2 catch rate and mean weight data from 2484 longline hauls conducted ... between 2003 and 2011 enabled the development of generalised additive mixed models that were then used to ... make predictions of catch rate and mean weight across fishable depths in both Divisions. Catch rates ... , with most locations within fishable depths predicted to have catch rate of less than 100 kg per 1000 ...
Meeting Document : WG-FSA-11/35 : Author(s): D.C. Welsford (Australia)