Geographic variation and plasticity in climate stress resistance among southern African populations of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae)

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dc.contributor.authorWeldon, Christopher W.en_ZA
dc.contributor.authorNyamukondiwa, Casperen_ZA
dc.contributor.authorKarsten, Minetteen_ZA
dc.contributor.authorChown, Steven L.en_ZA
dc.contributor.authorTerblanche, John S.en_ZA
dc.date.accessioned2020-03-12T10:06:03Z
dc.date.available2020-03-12T10:06:03Z
dc.date.issued2018-06-29en_ZA
dc.descriptionCITATION: Weldon, C. W., et al. 2018. Geographic variation and plasticity in climate stress resistance among southern African populations of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). Scientific Reports, 8:9849, doi:10.1038/s41598-018-28259-3.en_ZA
dc.descriptionThe original publication is available at https://www.nature.comen_ZA
dc.description.abstractTraits of thermal sensitivity or performance are typically the focus of species distribution modelling. Among-population trait variation, trait plasticity, population connectedness and the possible climatic covariation thereof are seldom accounted for. Here, we examine multiple climate stress resistance traits, and the plasticity thereof, for a globally invasive agricultural pest insect, the Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). We also accounted for body size and population genetic connectivity among distinct populations from diverse bioclimatic regions across southern Africa. Desiccation resistance, starvation resistance, and critical thermal minimum (CTmin) and maximum (CTmax) of C. capitata varied between populations. For thermal tolerance traits, patterns of flexibility in response to thermal acclimation were suggestive of beneficial acclimation, but this was not the case for desiccation or starvation resistance. Population differences in measured traits were larger than those associated with acclimation, even though gene flow was high. Desiccation resistance was weakly but positively affected by growing degree-days. There was also a weak positive relationship between CTmin and temperature seasonality, but CTmax was weakly but negatively affected by the same bioclimatic variable. Our results suggest that the invasive potential of C. capitata may be supported by adaptation of tolerance traits to local bioclimatic conditions.en_ZA
dc.description.urihttps://www.nature.com/articles/s41598-018-28259-3#Sec7
dc.description.versionPublisher's versionen_ZA
dc.format.extent13 pages : illustrationsen_ZA
dc.identifier.citationWeldon, C. W., et al. 2018. Geographic variation and plasticity in climate stress resistance among southern African populations of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae). Scientific Reports, 8:9849, doi:10.1038/s41598-018-28259-3en_ZA
dc.identifier.issn2045-2322 (online)
dc.identifier.otherdoi:10.1038/s41598-018-28259-3
dc.identifier.urihttp://hdl.handle.net/10019.1/107615
dc.language.isoen_ZAen_ZA
dc.publisherNature Researchen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectCeratitis capitata --South Africa -- Populationen_ZA
dc.subjectClimatic changeen_ZA
dc.subjectMediterranean fruit-fly -- Effect of temperature onen_ZA
dc.subjectAgricultural pests -- Africa, Southernen_ZA
dc.titleGeographic variation and plasticity in climate stress resistance among southern African populations of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae)en_ZA
dc.typeArticleen_ZA
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