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Local adaptation along an environmental cline in a species with an inversion polymorphism
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap.ORCID-id: 0000-0001-7089-524X
2017 (Engelska)Ingår i: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 30, nr 6, s. 1068-1077Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Polymorphic inversions are ubiquitous across the animal kingdom and are frequently associated with clines in inversion frequencies across environmental gradients. Such clines are thought to result from selection favouring local adaptation; however, empirical tests are scarce. The seaweed fly Coelopa frigida has an alpha/beta inversion polymorphism, and previous work demonstrated that the alpha inversion frequency declines from the North Sea to the Baltic Sea and is correlated with changes in tidal range, salinity, algal composition and wrackbed stability. Here, we explicitly test the hypothesis that populations of C. frigida along this cline are locally adapted by conducting a reciprocal transplant experiment of four populations along this cline to quantify survival. We found that survival varied significantly across treatments and detected a significant Location x Substrate interaction, indicating local adaptation. Survival models showed that flies from locations at both extremes had highest survival on their native substrates, demonstrating that local adaptation is present at the extremes of the cline. Survival at the two intermediate locations was, however, not elevated at the native substrates, suggesting that gene flow in intermediate habitats may override selection. Together, our results support the notion that population extremes of species with polymorphic inversions are often locally adapted, even when spatially close, consistent with the growing view that inversions can have direct and strong effects on the fitness of species.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, 2017. Vol. 30, nr 6, s. 1068-1077
Nyckelord [en]
adaptation, Coelopa frigida, environmental cline, inversion, polymorphism, survival
Nationell ämneskategori
Genetik Evolutionsbiologi Ekologi
Identifikatorer
URN: urn:nbn:se:umu:diva-137396DOI: 10.1111/jeb.13064ISI: 000403155000002PubMedID: 28295810Scopus ID: 2-s2.0-85018412032OAI: oai:DiVA.org:umu-137396DiVA, id: diva2:1120172
Tillgänglig från: 2017-07-05 Skapad: 2017-07-05 Senast uppdaterad: 2024-01-19Bibliografiskt granskad

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Larson, Keith W

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Journal of Evolutionary Biology
GenetikEvolutionsbiologiEkologi

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