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SUMMARY:Using fisheries samples to investigate seasonal and regional varia
 tion in Antarctic krill lipids  - Nicole Hellessey\, University of Tasmani
 a
DTSTART:20170620T120000Z
DTEND:20170620T123000Z
UID:TALK73099@talks.cam.ac.uk
CONTACT:Claire Waluda
DESCRIPTION:The production of Antarctic krill oil is a large industry and 
 is predicted to grow in the coming decades. Understanding how Antarctic kr
 ill lipids (oils) change in time and space is therefore of critical import
 ance to maintaining a sustainable krill fishery. This study examined how t
 he lipid and fatty acid content of Antarctic krill varies seasonally and s
 patially. We used samples of krill harvested by krill fishing vessels coll
 ected daily over a 3-year time period. Krill were staged\, sexed\, weighed
  and measured before undergoing lipid analysis.  Our results show an annua
 l fine-scale seasonal cycle for lipid content and composition in Antarctic
  krill. Levels of the ecologically and commercially important and health-b
 enefitting omega 3 polyunsaturated fatty acids varied between seasons\, gi
 ving us an enhanced insight into variations in the krill diet and health t
 hroughout the year. Our data can be used as a baseline for future studies 
 assessing lipid levels under stressors such as ocean acidification and war
 ming. These results also serve as a baseline for lipid levels in the energ
 y budget of krill throughout their life history and between the sexes. 
LOCATION:British Antarctic Survey\, Room 307
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