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SUMMARY:Group living – causes and consequences: lessons from the biology
  of social spiders - Prof Leticia Aviles (University of British Columbia)
DTSTART:20170606T120000Z
DTEND:20170606T130000Z
UID:TALK72812@talks.cam.ac.uk
CONTACT:50761
DESCRIPTION:Using research done in my group on social spiders\, I will ill
 ustrate how sociality—group living and cooperation—arise as a result o
 f an interaction between intrinsic features of the organisms and the envir
 onments in which they live.  I will show how the dense tridimensional webs
  that characterize the genera where social spiders have originated may int
 eract with environmental factors such as insect size\, predation rate\, an
 d precipitation intensity to determine the geographical distribution of sp
 ider sociality. I will also show how\, in turn\, group living and cooperat
 ion may become an axis for niche differentiation\, thus potentially playin
 g a role in the assemblage of natural communities.  I will illustrate the 
 latter point by analyzing communities of the spider genus Anelosimus acros
 s the Americas to test the hypothesis that their composition in terms of s
 pecies' body size and level of sociality is more over-dispersed than expec
 ted by chance.
LOCATION:Main Lecture Theatre\, Department of Zoology\, Downing Street\, C
 ambridge CB2 3EJ
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