Genome-wide evolutionary response to a heat wave in
            <i>Drosophila</i>

Rodrı́guez-Trelles, Francisco; Tarrı́o, Rosa; Santos, Mauro

doi:10.1098/rsbl.2013.0228

Cited by 91 publications

(95 citation statements)

References 24 publications

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“…Taken together with the cross validation analysis of the Core20 set, we conclude that coarse-grained temperature data of the weeks prior to sampling is sufficient to predict some of the seasonal changes in allele frequencies genome-wide. Our conclusion is consistent with previous results in other drosophilids (Rodríguez-Trelles et al 2013) which demonstrate that short term changes in temperature, either directly or indirectly, elicits dramatic changes in allele frequencies in the wild and in the laboratory.…”

Section: Resultssupporting

confidence: 93%

“…Seasonal adaptation was first observed in D. pseudoobscura by Dobzhansky and colleagues (Dobzhansky 1948) by tracking allele frequencies of inversions over seasons. Recent studies of other flies in the obscura group have demonstrated similar seasonal shifts of inversion frequencies and have linked these seasonal shifts to acute thermal stress (Rodríguez-Trelles et al 2013). In Drosophila melanogaster, multiple lines of evidence from phenotypic and genetic analysis demonstrate the presence of seasonal adaptation.…”

Section: Introductionmentioning

confidence: 94%

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Broad geographic sampling reveals predictable, pervasive, and strong seasonal adaptation inDrosophila

Taylor

et al. 2018

Preprint

173

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Local adaptation in response to spatially varying selection pressures is widely recognized as a ubiquitous feature for many organisms. In contrast, our understanding of local adaptation to temporally varying selection pressures is limited. To advance our understanding of local adaptation to temporally varying selection pressures, we studied genomic signatures of seasonal adaptation in Drosophila melanogaster. We generated whole-genome estimates of allele frequencies from flies sampled during the spring and fall from 15 localities. We show that seasonal adaptation is a general feature fly populations and that the direction of seasonal adaptation can be predicted by weather conditions in the weeks prior to sampling. We find that seasonal changes in allele frequency are mirrored by spatial variation in allele frequency and that seasonal adaptation affects allele frequencies at ~1.0-2.5% of polymorphisms genomewide. Our work demonstrates that seasonal adaptation is a major evolutionary force affecting D. melanogaster populations living in temperate environments.

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Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 94%

Broad geographic sampling reveals predictable, pervasive, and strong seasonal adaptation inDrosophila

Taylor

et al. 2018

Preprint

173

View full text Add to dashboard Cite

show abstract

“…The adaptive value of inversions has long been studied in wild populations of Drosophila . In D. subobscura , chromosomal polymorphism has been shown to vary seasonally (Rodríguez‐Trelles et al ., , ) and latitudinally (Prevosti et al ., ; Balanyà et al ., , ), even in response to global warming (Balanyà et al ., , ; Rezende et al ., ). Moreover, several phenotypic traits have been linked to inversion polymorphism in D. subobscura , including wing size and shape (Orengo & Prevosti, ; Fragata et al ., ), thermal preference and thermal tolerance (Dolgova et al ., ; Rego et al ., ; Calabria et al ., ), mating success (Santos et al ., ) and viability (Santos, ).…”

Section: Discussionmentioning

confidence: 99%

Tracking changes in chromosomal arrangements and their genetic content during adaptation

Santos

Pascual

Fragata

et al. 2016

J of Evolutionary Biology

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There is considerable evidence for an adaptive role of inversions, but how their genetic content evolves and affects the subsequent evolution of chromosomal polymorphism remains controversial. Here, we track how life-history traits, chromosomal arrangements and 22 microsatellites, within and outside inversions, change in three replicated populations of Drosophila subobscura for 30 generations of laboratory evolution since founding from the wild. The dynamics of fitness-related traits indicated adaptation to the new environment concomitant with directional evolution of chromosomal polymorphism. Evidence of selective changes in frequency of inversions was obtained for seven of 23 chromosomal arrangements, corroborating a role for inversions in adaptation. The evolution of linkage disequilibrium between some microsatellites and chromosomes suggested that adaptive changes in arrangements involved changes in their genetic content. Several microsatellite alleles increased in frequency more than expected by drift in targeted inversions in all replicate populations. In particular, there were signs of selection in the O3+4 arrangement favouring a combination of alleles in two loci linked to the inversion and changing along with it, although the lack of linkage disequilibrium between these loci precludes epistatic selection. Seven other alleles increased in frequency within inversions more than expected by drift, but were not in linkage disequilibrium with them. Possibly these alleles were hitchhiking along with alleles under selection that were not specific to those inversions. Overall, the selection detected on the genetic content of inversions, despite limited coverage of the genome, suggests that genetic changes within inversions play an important role in adaptation.

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“…Such mechanisms might include strong spatial structure, assortative mating, or loci which are in tight physical linkage or which are colocated on an inversion. There is, for example, clear evidence that thermal traits are associated with inversions in Drosophila (Rodríguez‐Trelles et al ., ), so low recombination rates are a real possibility. Thus, we can envision particular mechanisms that might undermine our expectation that these constraints emerge at different organizational levels.…”

Section: Discussionmentioning

confidence: 99%

Do evolutionary constraints on thermal performance manifest at different organizational scales?

Phillips

Llewelyn

Hatcher

et al. 2014

J of Evolutionary Biology

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The two foremost hypotheses on the evolutionary constraints on an organism's thermal sensitivity -the hotter-is-better expectation, and the specialistgeneralist trade-off -have received mixed support from empirical studies testing for their existence. Could these conflicting results reflect confusion regarding the organizational level (i.e. species > population > individual) at which these constraints should manifest? We propose that these evolutionary constraints should manifest at different organizational levels because of differences in their underlying causes and requirements. The hotter-is-better expectation should only manifest across separate evolutionary units (e.g. species, populations), and not within populations. The specialist-generalist trade-off, by contrast, should manifest within as well as between separate evolutionary units. We measured the thermal sensitivity of sprint performance for 440 rainforest sun skinks (Lampropholis coggeri) representing 10 populations, and used the resulting performance curves to test for evidence for the hypothesized constraints at two organizational levels: (i) across populations and (ii) within populations. As predicted, the hotter-is-better expectation was evident only at the across-population level, whereas the specialist-generalist trade-off was evident within, as well as across, populations. Our results suggest that, depending on the processes that drive them, evolutionary constraints can manifest at different organizational levels. Consideration of these underlying processes, and the organizational level at which a constraint should manifest, may help resolve conflicting empirical results.

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Genome-wide evolutionary response to a heat wave in Drosophila

Cited by 91 publications

References 24 publications

Broad geographic sampling reveals predictable, pervasive, and strong seasonal adaptation inDrosophila

Broad geographic sampling reveals predictable, pervasive, and strong seasonal adaptation inDrosophila

Tracking changes in chromosomal arrangements and their genetic content during adaptation

Do evolutionary constraints on thermal performance manifest at different organizational scales?

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