First-generation linkage map of the warningly colored butterfly Heliconius erato

We report the first genetic linkage map of Heliconius erato, a species that shows remarkable variation in its warningly colored wing patterns. We use crosses between H. erato and its sister species, H. himera, to place two major color pattern genes, D and Cr, on a linkage map containing AFLP, allozy...

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Bibliographic Details
Published in:Heredity 2005-04, Vol.94 (4), p.408-417
Main Authors: Tobler, A, Kapan, D, Flanagan, N.S, Gonzalez, C, Peterson, E, Jiggins, C.D, Johntson, J.S, Heckel, D.G, McMillan, W.O
Format: Article
Language:English
Subjects:
allozymes
amplified fragment length polymorphism
Animals
Biomedical and Life Sciences
Biomedicine
Butterflies - genetics
Chromosome Mapping
color
Cytogenetics
Ecology
Erato
Evolutionary Biology
Gene mapping
genes
Genetic Linkage
genetic markers
Heliconius
Heliconius erato
Heliconius himera
Human Genetics
Lepidoptera
linkage groups
loci
microsatellite repeats
original-article
Pigmentation - genetics
Plant Genetics and Genomics
Quantitative Trait, Heritable
wing color patterns
wings
Wings, Animal
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Summary:We report the first genetic linkage map of Heliconius erato, a species that shows remarkable variation in its warningly colored wing patterns. We use crosses between H. erato and its sister species, H. himera, to place two major color pattern genes, D and Cr, on a linkage map containing AFLP, allozyme, microsatellite and single-copy nuclear loci. We identified all 21 linkage groups in an initial genetic screen of 22 progeny from an F1 female male H. himera family. Of the 229 markers, 87 used to identify linkage groups were also informative in 35 progeny from a sibling backcross (H. himera female F1 male). With these, and an additional 33 markers informative in the second family, we constructed recombinational maps for 19 of the 21 linkage groups. These maps varied in length from 18.1 to 431.1 centimorgans (cM) and yielded an estimated total length of 2400 cM. The average distance between markers was 23 cM, and eight of the 19 linkage groups, including the sex chromosome (Z) and the chromosome containing the Cr locus, contained two or more codominant anchor loci. Of the three potential candidate genes mapped here, Cubitus interruptus (Ci), Decapentaplegic (Dpp) and Wingless (Wg), only Ci was linked, although loosely, to a known Heliconius color pattern locus. This work is an important first step for constructing a denser genetic map of the H. erato color pattern radiation and for a comparative genomic study of the architecture of mimicry in Heliconius butterflies.
ISSN:0018-067X
1365-2540
DOI:10.1038/sj.hdy.6800619