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Professor of Organismic and Evolutionary Biology in Residence

James Mallet

Professor of Organismic and Evolutionary Biology in Residence






We study evolution, hybridization, and speciation – mainly in butterflies. Methods range from collecting trips in dugouts, field experiments in the Amazon rainforest, population genetic inferences about selection and gene flow, and genomics.

Selected Publications


Van Belleghem SM, Rastas P, Papanicolaou A, Martin SH, Arias CF, Supple MA, Hanly JJ, Mallet J, Lewis JJ, Hines HM, et al. Complex modular architecture around a simple toolkit of wing pattern genes. Nature Ecology and Evolution [Internet]. 2017;1 :0052. Publisher’s VersionREPRINT

 Rosser N, Simpson F, Willmott K, Lamas G, Huertas B, Joron M, Mallet J, Dasmahapatra KKA new cryptic species of Heliconius (Lepidoptera: Nymphalidae). Submitted. 2017.Abstract

de Silva DL, Mota LL, Chazot N, Mallarino R, Silva-Brandão KL, Gómez Piñerez LM, Freitas AVL, Lamas G, Joron M, Mallet J, et al. North Andean origin and diversification of the largest ithomiine butterfly genus [Pteronymia]. Scientific Reports [Internet]. 2017;7 : 45966.Publisher’s VersionAbstract

(Open Access)


Chazot N, Willmott KR, Condamine FL, de Silva DL, Freitas AVL, Morlon H, Giraldo CE, Jiggins CD, Joron M, Mallet J, et al. Into the Andes: multiple independent colonizations drive montane diversity in the Neotropical clearwing butterflies Godyridina. Molecular Ecology [Internet]. 2016;25 (22) :5765-5784. Publisher’s VersionAbstract REPRINT

Huertas B, Lamas G, Fagua G, Mallet J, Nakahara S, Willmott KA remarkable new butterfly species from western Amazonia (Lepidoptera: Nymphalidae: Satyrinae). Conservación Colombiana [Internet]. 2016;24 :5-11. Publisher’s Version REPRINT

(Open Access)

Mallet J, Hoekstra HEEcological genetics: a key gene for mimicry and melanism. Current Biology . 2016;26 (17) :R802-R804.Abstract REPRINT

Shapiro BJ, Le Ducq JB, Mallet JWhat is speciation?. PLoS Genetics [Internet]. 2016;12 (3) :e1005860. Publisher’s VersionAbstract

(Open Access)

Davey JW, Chouteau M, Barker SL, Maroja L, Baxter SW, Simpson F, Merrill RM, Joron M, Mallet J, Dasmahapatra KK, et al. Major improvements to the Heliconius melpomenegenome assembly used to confirm 10 chromosome fusion events in 6 million years of butterfly evolution. G3: Genes, Genomes, Genetics [Internet]. 2016;6 (3) :695-708.Publisher’s VersionAbstract

(Open Access)

Zhang W, Dasmahapatra K, Mallet J, Moreira G, Kronforst MGenome-wide introgression among distantly related Heliconius butterfly species. Genome Biology. 2016;17 (25).Abstract REPRINT

(Open Access)

Wallbank RWR, Baxter S, Pardo-Diaz C, Hanly JJ, Martin SH, Mallet J, Dasmahapatra KK, Salazar C, Joron M, Nadeau N, et al. The origins of an evolutionary novelty through enhancer shuffling. PloS Biology. 2016;14 (1) :e1002353.Abstract REPRINT

(Open Access)
Mallet J, Besansky N, Hahn MWHow reticulated are species?. BioEssays. 2016;38 (2) :140-149.Abstract REPRINT(Open Access)
de Silva DL, Elias M, Willmott K, Mallet J, Day JJDiversification of clearwing butterflies with the rise of the Andes. Journal of Biogeography. 2016;43 :44-58.Abstract REPRINT (Open Access) doi10.1111/jbi.12611