Multiple mating in the Glanville fritillary butterfly : a case of within-generation bet-hedging?

Show simple item record Sarhan, Alia Kokko, Hanna 2008-01-21T08:16:18Z en 2009-06-17T14:02:22Z 2008-01-21T08:16:18Z en 2009-06-17T14:02:22Z 2007
dc.identifier.citation Evolution 61 (3), 606–616 en
dc.identifier.uri en
dc.description.abstract Many hypotheses have been proposed to explain multiple mating in females. One of them is bet hedging, that is avoiding having no or very few offspring in any given generation, rather than maximizing the expected number of offspring. However, within-generation bet hedging is generally believed to be an unimportant evolutionary force, except in very small populations. In this study, we derive predictions of the bet-hedging hypothesis for a case in which local insect populations are often small, offspring performance varies, for example, due to inbreeding depression, and the groups of gregarious larvae have to exceed a threshold size before they are likely to survive throughout the larval stage. These conditions exist for populations of the Glanville fritillary butterfly (Melitaea cinxia), potentially making bet-hedging benefits larger than usual. We observed matings in a field cage, which allowed detailed observations under practically natural conditions, and analyzed genetic paternity of egg clutches laid by females under direct observation. The egg-laying and survival patterns are in line with the predictions, supporting the hypothesis that multiple mating in M. cinxia presents a rare case of within-generation bet hedging. en
dc.language.iso eng
dc.subject inbreeding en
dc.subject multiple mating en
dc.subject indirect genetic benefits en
dc.subject compatibility en
dc.subject genetic bet-hedging en
dc.subject Melitaea cinxia en
dc.subject metapopulation en
dc.subject last-male precedence pattern en
dc.title Multiple mating in the Glanville fritillary butterfly : a case of within-generation bet-hedging? en
dc.type Article en
dc.identifier.laitoskoodi B57115
dc.contributor.organization Ecology and Evolutionary Biology, Department of Biological and Environmental Sciences, University of Helsinki en
dc.contributor.organization Ekologia ja evoluutiobiologia (Bio- ja ympäristötieteiden laitos) fi
dc.contributor.organization Ekologi och evolutionsbiologi (Institutionen för bio- och miljövetenskaper) sv
dc.relation.issn 1558-5646

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