Weak and Strong Altruism in Trait Groups: Reproductive Suicide, Personal Fitness, and Expected Value.

e-Archivo Repository

Show simple item record

dc.contributor.author Cabrales, Antonio
dc.contributor.author Pollock, Gregory B.
dc.date.accessioned 2009-01-27T11:32:04Z
dc.date.available 2009-01-27T11:32:04Z
dc.date.issued 1998
dc.identifier.uri http://hdl.handle.net/10016/3504
dc.description.abstract A simple variant of trait group selection, employing predators as the mechanism underlying group selection, supports contingent reproductive suicide as altruism (i.e., behavior lowering personal fitness while augmenting that of another) without kin assortment. The contingent suicidal type may either saturate the population or be polymorphic with a type avoiding suicide, depending on parameters. In addition to contingent suicide, this randomly assorting morph may also exhibit continuously expressed strong altruism (sensu Wilson 1979) usually thought restricted to kin selection. The model will not, however, support a sterile worker caste as such, where sterility occurs before life history events associated with effective altruism; reproductive suicide must remain fundamentally contingent (facultative sensu West Eberhard 1987; Myles 1988) under random assortment. The continuously expressed strong altruism supported by the model may be reinterpreted as probability of arbitrarily committing reproductive suicide, without benefit for another; such arbitrary suicide (a "load" on "adaptive" suicide) is viable only under a more restricted parameter space relative to the necessarily concomitant adaptive contingent suicide.
dc.format.mimetype text/html
dc.language.iso eng
dc.publisher Universidad Pompeu Fabra. Departamento de Economia y Empresa.
dc.relation.ispartofseries Economics and Business Working Papers Series;
dc.relation.ispartofseries 316
dc.subject Altruism
dc.subject personal fitness
dc.subject predation
dc.subject reproductive suicide
dc.subject trait group selection
dc.title Weak and Strong Altruism in Trait Groups: Reproductive Suicide, Personal Fitness, and Expected Value.
dc.type workingPaper
dc.relation.publisherversion http://www.recercat.net/handle/2072/462
dc.subject.eciencia Economía
dc.rights.accessRights openAccess
 Find Full text

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record