Résultats de la recherche
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Towards a validation of ageing in mackerel icefish (Champsocephalus gunnari) – can we estimate age more accurately?
ototlith exchange programme in the late 1980’s revealed considerable differences between readers when fish ... briefly summarizes the state of knowledge on age determination in mackerel icefish and assesses the ... of ageing in mackerel icefish (Champsocephalus gunnari) – can we estimate age more accurately ... older than 3 or 4 years were aged. These differences could not be reconciled at the end of the exchange ...
Meeting Document : WG-FSA-05/23 : Auteur(s): K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)
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Draft: differences in the foraging strategies of male and female Adelie penguins
Abstract: Consistent gender differences in foraging trip durations, feeding localities and diet ... role in the intraspecific partitioning of foraging behaviour are discussed. Author(s): Franchi, E ... ., Kerry, K., Clarke, J. Title: Draft: differences in the foraging strategies of male and female Adelie ... years. Female penguins tended to make longer foraging trips than males, ranged greater distances more ...
Meeting Document : WG-EMM-95/46 : Auteur(s): Franchi, E., Kerry, K., Clarke, J.
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Engaging ‘the crowd’ in citizen science and remote sensing to learn about habitat affinity of two Southern Ocean seals
images of the pack ice acquired during October 2018 in the Weddell Sea to identify presence/absence of ... crabeater seals (Lobodon carcinophagus) in the Weddell Sea region. Satellites Over Seals provides an ... /absence data for Weddell seals on images from November 2010 and 2011. In a second campaign, we selected ... crabeater seals. In both campaigns, our goal was to identify probable presence/absence to learn where closer ...
Meeting Document : WG-EMM-2019/37 : Auteur(s): M.A. LaRue, D.G. Ainley, J. Pennycook, K. Stamatiou, M. Dozier, J. Saints, L. Sales, N. Nur, S. Stammerjohn and L. Barrington
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RECENT TRENDS IN NUMBERS OF FOUR SPECIES OF PENGUINS AT THE PRINCE EDWARD ISLANDS
and southern rockhopper penguin E. chrysocome. In December 2008 it was estimated that some 65 000 ... pairs of king penguins were incubating eggs at Marion Island, the larger of the two islands in the group ... in numbers of king penguin chicks that survived to the end of the winter period, but there was ... considerable fluctuation in chick production in the 1990s. It was roughly estimated that on average 88% of king ...
Meeting Document : WG-EMM-10/P1 : Auteur(s): R.J.M. Crawford, P.A. Whittington, L. Upfold, P.G. Ryan, S.L. Petersen, B.M. Dyer and J. Cooper
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Low genetic diversity and temporal stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of the Antarctica
differences between geographic locations or between samples collected in consequent years were observed. Our ... presented in Kuhn and Gaffney, 2008, do not support temporary stable genetic differentiation of samples from ... Ross Dependency. Discrepancy in allelic frequency with previously published data was also found for ... stability in the Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of the Antarctica ...
Meeting Document : WG-FSA-13/07 : Auteur(s): N.S. Mugue, A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev (Russia)
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Barcoding and beyond: applications and developments for biodiversity evaluation in the Southern Ocean
(NGS) techniques in the last 15 years has provided exciting new developments in classical barcoding ... Abstract: DNA barcoding is a valuable tool for biodiversity studies in the Southern Ocean. It can ... : applications and developments for biodiversity evaluation in the Southern Ocean Microsoft Word File: emm-2019 ...
Meeting Document : WG-EMM-2019/54 : Auteur(s): A. Dettai, G. Duhamel, C. Gallut, M. Eléaume and A. Martin
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Timescale of ovarian maturation in Notothenia coriiceps (Richardson); evidence for a prolonged adolescent phase
Abstract: Ovarian maturation in Notothenia coriiceps is known to include a period during which ... for about one year. The results from a two year study at Signy Island indicate that this adolescent ... oocytes which ripen. Author(s): Inigo Everson (United Kingdom) Title: Timescale of ovarian maturation in ... phase lasts for about four years. There is also some evidence to indicate that not all sexually mature ...
Meeting Document : WG-FSA-93/26 : Auteur(s): Inigo Everson (United Kingdom)
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Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island
while at shallower layer (20-50 m) at night. In the offshore foraging areas krill showed no diurnal ... . Penguin foraging areas were formed in inshore region, where krill frequently occurred but higher density ... areas of krill (≥250g/m2) were rather limited. In contrast, fur sea! foraging areas were formed in ... . 2-3 km in horizontal distance) of higher densities (≥250g/m2). In the inshore foraging areas krill ...
Meeting Document : WG-KRILL-92/27 : Auteur(s): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
Abstract: The waters in the vicinity of the South Shetland Islands and Elephant Island were ... biomass of krill in the 1990/91 austral summer. Main krill concentrations occurred in the shelf waters ... north of the islands, as usual. Tracks of drifting buoys (with curtain drogues at 30 m depth where krill ... frequently occur), have elucidated the occurrence of convergent complex eddies in these shelf waters. (Note ...
Meeting Document : WG-KRILL-91/22 : Auteur(s): Delegation of Japan
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By-catch analysis as a part of progress report for the research fishery of Dissostichus spp. in Subarea 48.6 by Japan and South Africa during 2012/13–2016/17
report for the research fishery of Dissostichus spp. in Subarea 48.6 by Japan and South Africa during ... by-catch occurred in most longline research operations, the number of by-catch individuals was less ... than 100 individuals in most of the operations. In most of longline operation, by-catch weight was less ... than 100 kg and less than 20 % of total catch. GRV and ANT are common by-catch species, which are ...
Meeting Document : WG-SAM-17/44 : Auteur(s): T. Okuda, S. Somhlaba and T. Ichii