Integrating biogeographic and genetic approaches to investigate the history of bioluminescent colour alleles in the Jamaican click beetle, Pyrophorus plagiophthalamus

Molecular Ecology
Sebastian Velez, Jeffrey L Feder

Abstract

Bioluminescent colour in the Jamaican click beetle, Pyrophorus plagiophthalamus, is an ideal system for studies moving from gene to landscape to gain a holistic understanding of the molecular, ecological, and historical bases for adaptation. Previous studies have established the genetics of bioluminescent colour variation in the beetle to the level of the nucleotide base pair in the target gene luciferase. Three different luciferase colour alleles affecting ventral light organ colour [yellow-green (vYG), yellow (vYE), and orange (vOR)] were found segregating in P. plagiophthalamus populations. These alleles differ from each other in a number of replacement mutations (14 total), the majority of which (11) have a measurable effect on colour. Phylogenetic analysis revealed a long-term adaptive trend on Jamaica towards longer wavelength bioluminescence, culminating in the most recently derived vOR allele. Here, we further investigate the historical and geographic context of adaptive colour evolution by testing a vicariance model for the origins of the extant ventral light organ polymorphism: that the vOR allele arose and differentiated in an isolated deme on the east side of Jamaica before spreading westward. Comparisons of colour ...Continue Reading

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Citations

Oct 17, 2009·Molecular Phylogenetics and Evolution·Sarah C CrewsRosemary G Gillespie
Jan 9, 2008·Molecular Ecology·Athanasia C TzikaMichel C Milinkovitch
Apr 22, 2006·Molecular Ecology·Carol Eunmi Lee, Thomas Mitchell-Olds
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May 11, 2012·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Danilo T AmaralVadim R Viviani

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