Mutualism, Parasitism, and Evolutionary Adaptation
Mutualism, Parasitism, and Evolutionary Adaptation
Our investigations concern the role of symbiosis as an enabling mechanism in evolutionary adaptation. Previous work has illustrated how the formation of mutualist groups can guide genetic variation so as to enable the evolution of ultimately independent organisms that would otherwise be unobtainable. The new experiments reported here show that this effect applies not just in genetically related organisms but may also occur from symbiosis between distinct species. In addition, a new detail is revealed: when the symbiotic group members are drawn from two separate species only one of these species achieves eventual independence and the other remains parasitic. It is nonetheless the case that this second species, formerly mutualistic, was critical in enabling the independence of the first. We offer a biological example that is suggestive of the effect and discuss the implications for evolving complex organisms, natural and artificial.
170-178
Watson, Richard A.
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Reil, Torsten
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Pollack, Jordan B.
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Bedau, M.
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McCaskill, J.
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Packard, N.
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Rasmussen, S.
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2000
Watson, Richard A.
ce199dfc-d5d4-4edf-bd7b-f9e224c96c75
Reil, Torsten
e78ef52c-01c3-46d8-a175-d7339b17233d
Pollack, Jordan B.
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Bedau, M.
275720e4-31df-456b-b0f2-91fe38a0ae6b
McCaskill, J.
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Packard, N.
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Rasmussen, S.
8c8378a6-88fa-4cf6-923b-ac99d4b2fd99
Watson, Richard A., Reil, Torsten and Pollack, Jordan B.
,
Bedau, M., McCaskill, J., Packard, N. and Rasmussen, S.
(eds.)
(2000)
Mutualism, Parasitism, and Evolutionary Adaptation.
Proceedings of Artificial Life VII (ALife VII), .
Abstract
Our investigations concern the role of symbiosis as an enabling mechanism in evolutionary adaptation. Previous work has illustrated how the formation of mutualist groups can guide genetic variation so as to enable the evolution of ultimately independent organisms that would otherwise be unobtainable. The new experiments reported here show that this effect applies not just in genetically related organisms but may also occur from symbiosis between distinct species. In addition, a new detail is revealed: when the symbiotic group members are drawn from two separate species only one of these species achieves eventual independence and the other remains parasitic. It is nonetheless the case that this second species, formerly mutualistic, was critical in enabling the independence of the first. We offer a biological example that is suggestive of the effect and discuss the implications for evolving complex organisms, natural and artificial.
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watson_mpea_alife_2000.pdf
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Published date: 2000
Organisations:
Agents, Interactions & Complexity
Identifiers
Local EPrints ID: 262012
URI: http://eprints.soton.ac.uk/id/eprint/262012
PURE UUID: 681f9008-fd80-4b8f-b7a0-34857416e05a
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Date deposited: 21 Feb 2006
Last modified: 15 Mar 2024 03:21
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Contributors
Author:
Richard A. Watson
Author:
Torsten Reil
Author:
Jordan B. Pollack
Editor:
M. Bedau
Editor:
J. McCaskill
Editor:
N. Packard
Editor:
S. Rasmussen
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