Global biogeography of warning colouration in the butterfly Danaus chrysippus

Wanzhen Liu, David A. S. Smith, Gayatri Raina, Rowan Stanforth, Ivy Ng’Iru, Piera Ireri, Dino J. Martins, Ian J. Gordon & Simon H. Martin
Warning colouration provides a textbook example of natural selection, but the frequent observation of polymorphism in aposematic species presents an evolutionary puzzle. We investigated biogeography and polymorphism of warning patterns in the widespread butterfly Danaus chrysippus using records from citizen science (n=5467), museums (n=8864), and fieldwork (n=2586). We find that polymorphism in three traits controlled by known mendelian loci is extensive. Broad allele frequency clines, hundreds of km wide, suggest a balance between long-range dispersal...
1 citation reported since publication in 2022.
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