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dc.contributor.authorBeerli, Nicolas
dc.contributor.authorBärtschi, Florian
dc.contributor.authorBallesteros‐Mejia, Liliana
dc.contributor.authorKitching, I
dc.contributor.authorBeck, Jan
dc.date.accessioned2021-11-24T10:56:06Z
dc.date.available2021-11-24T10:56:06Z
dc.date.issued2019-08
dc.date.submitted2019-08
dc.identifier.citationBeerli, N, Bärtschi, F, Ballesteros-Mejia, L, Kitching, IJ, Beck, J. How has the environment shaped geographical patterns of insect body sizes? A test of hypotheses using sphingid moths. J Biogeogr. 2019; 46: 1687– 1698. https://doi.org/10.1111/jbi.13583en_US
dc.identifier.issn0305-0270
dc.identifier.doi10.1111/jbi.13583
dc.identifier.urihttp://hdl.handle.net/10141/622954
dc.description.abstractAim: We mapped the geographical pattern of body sizes in sphingid moths and investigated latitudinal clines. We tested hypotheses concerning their possible environmental control, that is, effects of temperature (negative: temperature size rule or Bergmann's rule; positive: converse Bergmann rule), food availability, robustness to starvation during extreme weather and seasonality. Location: Old World and Australia/Pacific region. Methods: Body size data of 950 sphingid species were compiled and related to their distribution maps. Focusing on body length, we mapped the median and maximum size of all species occurring in 100 km grid cells. In a comparative approach, we tested the predictions from explanatory hypotheses by correlating species' size to the average environmental conditions encountered throughout their range, under univariate and multivariate models. We accounted for phylogeny by stepwise inclusion of phylogenetically informed taxonomic classifications into hierarchical random‐intercept mixed models. Results: Median body sizes showed a distinctive geographical pattern, with large species in the Middle East and the Asian tropics, and smaller species in temperate regions and the Afrotropics. Absolute latitude explained very little body size variation, but there was a latitudinal cline of maximum size. Species' median size was correlated with net primary productivity, supporting the food availability hypothesis, whereas support for other hypotheses was weak. Environmental correlations contributed much less (i.e. <10%) to explaining overall size variation than phylogeny (inclusion of which led to models explaining >70% of variability). Main conclusion: The intuitive impression of larger species in the tropics is shaped by larger size maxima. Median body sizes are only very weakly related to latitude. Most of the geographical variation in body size in sphingid moths is explained by their phylogenetic past. NPP and forest cover correlate positively with the body size, which supports the idea that food availability allowed the evolution of larger sizes.en_US
dc.language.isoenen_US
dc.publisherWileyen_US
dc.rightsembargoedAccessen_US
dc.titleHow has the environment shaped geographical patterns of insect body sizes? A test of hypotheses using sphingid mothsen_US
dc.typeJournal Articleen_US
dc.identifier.eissn1365-2699
dc.identifier.journalJournal of Biogeographyen_US
dc.date.updated2021-11-08T14:59:14Z
dc.identifier.volume46en_US
dc.identifier.issue8en_US
dc.identifier.startpage1687en_US
elements.import.authorBeerli, Nicolas
elements.import.authorBärtschi, Florian
elements.import.authorBallesteros‐Mejia, Liliana
elements.import.authorKitching, Ian J
elements.import.authorBeck, Jan
dc.description.nhmThe attached document is the author(’s’) final accepted/submitted version of the journal article. You are advised to consult the publisher’s version if you wish to cite from iten_US
dc.subject.nhmhawkmothsen_US
dc.subject.nhmlepidopteraen_US
dc.subject.nhmBergmann's ruleen_US
dc.subject.nhmcomparativeen_US
dc.subject.nhmectothermsen_US
dc.subject.nhmphylogenyen_US
refterms.dateFOA2020-08-31T00:00:00Z


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