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CATEGORIES:Wolfson College Science Society
SUMMARY:There be monsters:  adaptations in Antarctic marin
 e animals - Professor Lloyd Peck\, British Antarct
 ic Survey
DTSTART;TZID=Europe/London:20190503T174500
DTEND;TZID=Europe/London:20190503T191000
UID:TALK118258AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/118258
DESCRIPTION:Antarctic marine species have evolved over million
 s of years in cold\, thermally stable\, but also s
 easonally intense conditions.  In response to this
  many unique adaptations have been produced includ
 ing antifreeze in fish\, an absence of haemoglobin
  in Channichthyd fish and the absence of a heat sh
 ock response in some species.  Recently it has bee
 n shown that the vast majority of biological proce
 sses are slowed in Antarctic marine species compar
 ed to those from warmer water sites.  For respirat
 ion\, aerobic capacity and activity the slowing in
  Antarctic species compared to temperate and tropi
 cal species is in line with the expected effect of
  temperature on biological functions as first desc
 ribed by Arrhenius over 100 years ago.  For other 
 processes\, such as growth\, embryonic development
  and the duration of elevated metabolic rates afte
 r feeding\, the slowing is much greater than the e
 xpected effect of temperature.  This talk presents
  these data and then shows why the impact of low t
 emperature on protein synthesis is the likely reas
 on for these differing results
LOCATION:Wolfson College\, Gatsby Room
CONTACT:Dr Antonio M. M. Rodrigues
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