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ID: 210705.0, MPI für Evolutionsbiologie / Evolutionary ecology
Delayed selfing in relation to the availability of a mating partner in the cestode Schistocephalus solidus
Authors:Schjørring, Solveig
Language:English
Date of Publication (YYYY-MM-DD):2004-11
Title of Journal:Evolution
Volume:58
Issue / Number:11
Start Page:2591
End Page:2596
Review Status:not specified
Audience:Not Specified
Abstract / Description: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
Free Keywords:age at first reproduction; inbreeding avoidance; inbreeding depression; mating behavior; parasite life history; Schistocephalus solidus; self-fertilization
External Publication Status:published
Document Type:Article
Affiliations:MPI für Limnologie/Abt. Evolutionsökologie
External Affiliations:Laboratoire de Parasitologie Evolutive, Université Pierre et Marie Curie, F-75252 Paris Cedex 05, France
Identifiers:ISSN:0014-3820 [ID-No:1]
LOCALID:2351/S 38332 [Listen-Nummer/S-Nummer]
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