Data from: Increased fluctuation in a butterfly metapopulation leads to diploid males and decline of a hyperparasitoid

dc.contributor.affiliationUniversity of Helsinki-van Nouhuys, Saskya
dc.contributor.authorvan Nouhuys, Saskya
dc.coverage.spatialNorthern Europe
dc.date.accessioned2025-04-29T13:59:28Z
dc.date.issued2018-07-23
dc.date.issued2018-07-23
dc.descriptionClimate change can increase spatial synchrony of population dynamics, leading to large-scale fluctuation that destabilizes communities. High trophic level species such as parasitoids are disproportionally affected because they depend on unstable resources. Most parasitoid wasps have complementary sex determination, producing sterile males when inbred, which can theoretically lead to population extinction via the diploid male vortex. We examined this process empirically using a hyperparasitoid population inhabiting a spatially structured host population in a large fragmented landscape. Over four years of high host butterfly metapopulation fluctuation, diploid male production by the wasp increased, and effective population size declined precipitously. Our multitrophic spatially structured model shows that host population fluctuation can cause local extinctions of the hyperparasitoid due to the diploid male vortex. However, regionally it persists because spatial structure allows for efficient local genetic rescue via balancing selection for rare alleles carried by immigrants. This is the first empirically based study of the possibility of the diploid male vortex in a natural host-parasitoid system.
dc.identifierhttps://doi.org/10.5061/dryad.56qf11h
dc.identifier.urihttps://datakatalogi.helsinki.fi/handle/123456789/4282
dc.rights.licensecc-zero
dc.subjecthost-parasitoid dynamics
dc.subjectMesochorus stigmaticus
dc.subjectdiploid male vortex
dc.subjectcurrent
dc.subjectHyposoter horticola
dc.subjectMelitaea cinxia
dc.subjectcomplementary sex determination
dc.titleData from: Increased fluctuation in a butterfly metapopulation leads to diploid males and decline of a hyperparasitoid
dc.typedataset

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