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vol. 160, no. 1 the american naturalist july 2002 Altruism, Cheating, and Anticheater Adaptations
 

Summary: vol. 160, no. 1 the american naturalist july 2002
Altruism, Cheating, and Anticheater Adaptations
in Cellular Slime Molds
Richard Ellis Hudson,* Juliann Eve Aukema,
Claude Rispe,
and Denis Rozež
Department of Ecology and Evolutionary Biology, University of
Arizona, Tucson, Arizona 85721
Submitted September 21, 2000; Accepted December 13, 2001
abstract: Cellular slime molds (CSMs) possess a remarkable life
cycle that encompasses an extreme act of altruism. CSM cells live as
individual amoebae until starved, then aggregate and ultimately
transform themselves into a multicellular fruiting body. This fruiting
body consists of stalk cells (altruists that eventually die) and spores
(the beneficiaries of this sacrifice). Altruistic systems such as this are
vulnerable to cheaters, which are individuals unrelated to the altruists
that obtain the benefits provided by them without reciprocating.
Here, we investigate two forces that can maintain CSM altruism
despite cheating: kin selection and anticheater adaptations. First, we
present new kinship-based models based on CSM developmental

  

Source: Aukema, Juliann E. - National Center for Ecological Analysis and Synthesis, University of California at Santa Barbara

 

Collections: Environmental Sciences and Ecology