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  Delayed selfing in relation to the availability of a mating partner in the cestode Schistocephalus solidus

Schjørring, S. (2004). Delayed selfing in relation to the availability of a mating partner in the cestode Schistocephalus solidus. Evolution, 58(11), 2591-2596.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DA76-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DA77-4
Genre: Journal Article

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schjoerring_2004.pdf (Publisher version), 208KB
 
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 Creators:
Schjørring, Solveig1, Author              
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1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: age at first reproduction; inbreeding avoidance; inbreeding depression; mating behavior; parasite life history; Schistocephalus solidus; self-fertilization
 Abstract: A hermaphroditic individual that prefers to outbreed but that has the potential of selfing faces a dilemma: in the absence of a partner, should it wait for one to arrive or should it produce offspring by selfing? Recent theory on this question suggests that the evolutionary solution is to find an optimal delay of reproduction that balances the potential benefit of outcrossing and the cost of delaying the onset of reproduction. Assuming that resources retained from breeding can be reallocated to future reproduction, isolated individuals, compared with individuals with available mates, are predicted to delay their age at first reproduction to wait for future outcrossing. Here, I present empirical support for this idea with experimental data from the hermaphroditic cestode Schistocephalus solidus. I show that individuals breeding alone delay their reproduction and initially produce their eggs at a slow rate relative to cestodes breeding in pairs. This delay is partly compensated for by a later higher egg production, although singly breeding cestodes still pay a cost of overall lower egg production

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Language(s): eng - English
 Dates: 2004-11
 Publication Status: Published in print
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 Identifiers: eDoc: 210705
Other: 2351/S 38332
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Title: Evolution
Source Genre: Journal
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Pages: - Volume / Issue: 58 (11) Sequence Number: - Start / End Page: 2591 - 2596 Identifier: ISSN: 0014-3820