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SUMMARY:Life-history responses to environmental stress in butterflies - Ma
 rjo Saastamoinen - University of Helsinki\, Finland
DTSTART:20120214T160000Z
DTEND:20120214T170000Z
UID:TALK35134@talks.cam.ac.uk
CONTACT:Oskar Brattstrom
DESCRIPTION:Organisms in the wild are constantly faced with a wide range o
 f environmental change\, for example\, in resource availability and therma
 l conditions. Understanding how organisms may cope with such variation is 
 becoming increasingly important due to human caused phenomena\, such as ha
 bitat fragmentation\, habitat degradation and climate change. \n\nVariatio
 n in environmental conditions can have both direct and indirect (i.e. via 
 maternal effects) influence on individual quality (condition) and life his
 tory\, and it may even affect population persistence. Experiencing environ
 mental stress during development can impact resulting adult life histories
  and individual fitness via changes in individual quality (e.g. immunity)\
 , growth trajectories and/or resource allocation patterns. Even though res
 ponses to environmental stress are often negative\, a growing number of st
 udies are indicating high levels of variation among individuals to cope wi
 th such stress. Furthermore\, under certain environmental conditions early
  experience of environmental stress may yield individuals\, which are less
  sensitive to environmental stress later on in life. \n\nIn my presentatio
 n\, I will discuss these issues by presenting some recent work on the Glan
 ville fritillary butterfly\, which in Finland persists as a metapopulation
 \, and in which variation in environmental conditions among the local popu
 lations is known to be one of the main driving factors of the observed fas
 t population turnover.  
LOCATION:Part II Lecture Theatre\, Department of Zoology
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