The effects of functional response and host abundance fluctuations on genetic rescue in parasitoids with single-locus sex determination

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dc.contributor.author Nonaka, Etsuko
dc.contributor.author Kaitala, Veijo
dc.date.accessioned 2021-02-18T15:35:01Z
dc.date.available 2021-02-18T15:35:01Z
dc.date.issued 2020-12
dc.identifier.citation Nonaka , E & Kaitala , V 2020 , ' The effects of functional response and host abundance fluctuations on genetic rescue in parasitoids with single-locus sex determination ' , Ecology and Evolution , vol. 10 , no. 23 , pp. 13030-13043 . https://doi.org/10.1002/ece3.6889
dc.identifier.other PURE: 160483674
dc.identifier.other PURE UUID: cf8c40ea-e213-45d4-878d-c81e8e8ed5ca
dc.identifier.other WOS: 000577623700001
dc.identifier.other ORCID: /0000-0001-6563-2840/work/89116207
dc.identifier.uri http://hdl.handle.net/10138/326742
dc.description.abstract Many parasitoids have single-locus complementary sex determination (sl-CSD), which produces sterile or inviable males when homozygous at the sex determining locus. A previous study theoretically showed that small populations have elevated risks of extinction due to the positive feedback between inbreeding and small population size, referred to as the diploid male vortex. A few modeling studies have suggested that the diploid male vortex may not be as common because balancing selection at sex determining loci tends to maintain high allelic diversity in spatially structured populations. However, the generality of the conclusion is yet uncertain, as they were drawn either from models developed for particular systems or from a general-purpose competition model. To attest the conclusion, we study several well-studied host-parasitoid models that incorporate functional response specifying the number of attacked hosts given a host density and derive the conditions for a diploid male vortex in a single population. Then, we develop spatially structured individual-based versions of the models to include female behavior, diploid male fertility, and temporal fluctuations. The results show that producing a handful of successful offspring per female parasitoid could enable parasitoid persistence when a typical number of CSD alleles are present. The effect of functional response depends on the levels of fluctuations in host abundance, and inviable or partially fertile diploid males and a small increase in dispersal can alleviate the risk of a diploid male vortex. Our work supports the generality of effective genetic rescue in spatially connected parasitoid populations with sl-CSD. However, under more variable climate, the efficacy of the CSD mechanism may substantially decline. en
dc.format.extent 14
dc.language.iso eng
dc.relation.ispartof Ecology and Evolution
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject dispersal
dc.subject eco-evolutionary dynamics
dc.subject genetic drift
dc.subject individual-based model
dc.subject population bottleneck
dc.subject spatially structured population
dc.subject DIPLOID MALE PRODUCTION
dc.subject LIFETIME REPRODUCTIVE SUCCESS
dc.subject HABITAT FRAGMENTATION
dc.subject POPULATION-GENETICS
dc.subject DETERMINING ALLELES
dc.subject ISLAND ISOLATION
dc.subject MATING SYSTEM
dc.subject HYMENOPTERA
dc.subject DISPERSAL
dc.subject WASP
dc.subject 1181 Ecology, evolutionary biology
dc.title The effects of functional response and host abundance fluctuations on genetic rescue in parasitoids with single-locus sex determination en
dc.type Article
dc.contributor.organization Veijo Kaitala / Principal Investigator
dc.contributor.organization Organismal and Evolutionary Biology Research Programme
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1002/ece3.6889
dc.relation.issn 2045-7758
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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