Assessment of fitness traits of pure and mixed crosses of Mastrus ridens populations to improve classical biological control of codling moth

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dc.article.number104899
dc.contributor.authorSandanayaka W.R.M.
dc.contributor.authorDavis V.A.
dc.contributor.authorPage-Weir N.E.M.
dc.contributor.authorChhagan A.
dc.contributor.authorJenkins H.K.
dc.contributor.authorBlin A.
dc.contributor.authorZaviezo T.
dc.date.accessioned2024-09-15T07:00:03Z
dc.date.available2024-09-15T07:00:03Z
dc.date.issued2022
dc.description.abstract© 2022Populations of natural enemies in classical biological control programs often undergo recurring bottlenecks during importation and rearing, which can result in lower genetic variability and fitness. Enriching colonies with wild individuals, multiple importations or combining populations from different origins may help reduce this problem. Mastrus ridens (Hymenoptera: Ichneumonidae), a gregarious idiobiont ectoparasitoid of codling moth (Cydia pomonella) larvae was introduced to New Zealand from laboratory colonies dating to the 1990s. To improve populations for release, individuals from a most recent collection were imported from Chile (CL). Tests were conducted to measure genetic diversity of the parental populations (F0) and fitness traits of pure and mixed combinations of NZ and CL populations for F0 and the F1 generations. Results showed several effects depending on the population origin. CL females and males in the F0 generation lived longer than NZ females and males. Offspring from a CL mother lived longer than those from a NZ mother, and F0 and F1 females from a CL mother parasitized more larvae than females from a NZ mother. Genetic diversity estimates of F0 CL and NZ populations were 24% and 17% heterozygosity, respectively, and the NZ population had a larger proportion of diploid males than the CL population. Thus, no improvement in reproductive output resulted by mixing NZ and CL populations, as hypothesized, but a maternal effect was found in this species. This study shows the importance of understanding and tracking imported populations' genetic diversity and fitness traits in classical biological control programs.
dc.description.funderSustainable Apple Pest Management programme
dc.description.funderPontificia Universidad Católica de Chile
dc.description.funderAgencia Nacional de Investigación y Desarrollo
dc.fuente.origenScopus
dc.identifier.doi10.1016/j.biocontrol.2022.104899
dc.identifier.issn10499644
dc.identifier.scopusidSCOPUS_ID:85127130015
dc.identifier.urihttps://doi.org/10.1016/j.biocontrol.2022.104899
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87879
dc.information.autorucFacultad de Agronomía e Ingeniería Forestal; Zaviezo Palacios, Tania; S/I; 62543
dc.language.isoen
dc.nota.accesoSin adjunto
dc.relation.ispartofBiological Control
dc.revistaBiological Control
dc.rightsAcceso cerrado
dc.subjectBiological control
dc.subjectGenetic diversity
dc.subjectIchneumonidae
dc.subjectLongevity
dc.subjectParasitism
dc.subjectReproductive output
dc.subject.ods03 Good health and well-being
dc.subject.odspa03 Salud y bienestar
dc.titleAssessment of fitness traits of pure and mixed crosses of Mastrus ridens populations to improve classical biological control of codling moth
dc.typeartículo
dc.volumen169
sipa.codpersvinculados62543
sipa.indexScopus
sipa.trazabilidadCarga WOS-SCOPUS;15-09-2024
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