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Symbiosis through exploitation and the merger of lineages in evolution

Law, R and Dieckmann, U (1998) Symbiosis through exploitation and the merger of lineages in evolution. Proceedings of the Royal Society B: Biological Sciences. pp. 1245-1253. ISSN 1471-2954

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A model for the coevolution of two species in facultative symbiosis is used to investigate conditions under which species merge to form a single reproductive unit. Two traits evolve in each species, the first affecting loss of resources from an individual to its partner, and the second affecting vertical transmission of the symbiosis from one generation to the next. Initial conditions are set so that the symbiosis involves exploitation of one partner by the other and vertical transmission is very rare. It is shown that, even in the face of continuing exploitation, a stable symbiotic unit can evolve with maximum vertical transmission of the partners. Such evolution requires that eventually deaths should exceed births for both species in the free-living state, a condition which can be met if the victim, in the course of developing its defences, builds up sufficiently large costs in the free-living state. This result expands the set of initial conditions from which separate lineages can be expected to merge into symbiotic units.

Item Type: Article
Copyright, Publisher and Additional Information: © 1998 The Royal Society
Keywords: adaptive dynamics,coevolution,evolutionary transitions,mutualism,symbiosis,vertical transmission,VERTICAL TRANSMISSION,COEVOLUTION,PERSPECTIVE,PARASITISM,MUTUALISM,DYNAMICS
Institution: The University of York
Academic Units: The University of York > Biology (York)
Depositing User: Repository Officer
Date Deposited: 15 Jun 2006
Last Modified: 17 May 2016 05:54
Published Version: http://dx.doi.org/10.1098/rspb.1998.0426
Status: Published
Refereed: Yes
URI: http://eprints.whiterose.ac.uk/id/eprint/1287

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