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SUMMARY:Krill feeding in fjords of the West Antarctic Peninsula (and a few
  penguins &amp\; seals) - Alison Cleary\, Norwegian Polar Institute
DTSTART:20170508T100000Z
DTEND:20170508T110000Z
UID:TALK72582@talks.cam.ac.uk
CONTACT:Claire Waluda
DESCRIPTION:We investigated feeding by Antarctic krill\, Euphausia superba
 \, in fjords and adjacent open waters of the West Antarctic Peninsula usin
 g next generation sequencing of gut contents. One hundred and seventy four
  krill were analysed\, and showed a diet consisting mainly of diatoms\, bu
 t also containing micro and mesozooplankton. The most striking result was 
 the high proportion of sequences from Chaetoceros spp. diatoms in the gut 
 contents of krill collected in fjords. This high proportion of Chaetoceros
  spp. was not observed in the guts of krill collected off-shore\, and coul
 d not be explained by differences in the bulk phytoplankton communities. T
 he physical characteristics of fjords are conducive to the formation of ph
 ytoplankton layers\, and we suggest the most parsimonious explanation for 
 the observed dominance of Chaetoceros spp. sequences in the guts of krill 
 from fjords is krill feeding on phytoplankton layers. I will also briefly 
 introduce our new\, and marginally related\, project investigating populat
 ion genomics of macaroni penguins and Antarctic fur seals in a circumpolar
  context.\n\n
LOCATION:British Antarctic Survey\, Room 307
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