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| First-generation linkage map of the warningly colored butterfly Heliconius erato |
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| Author(s): Tobler A, Kapan D, Flanagan NS, Gonzalez C, Peterson E, Jiggins CD, Johntson JS, Heckel DG, McMillan WO |
| Source: HEREDITY Volume: 94 Issue: 4 Pages: 408-417 Published: APR 2005 |
| Times Cited: 30 References: 52 |
| Abstract: 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 x 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 x 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. |
| Document Type: Article |
| Language: English |
| Reprint Address: McMillan, WO (reprint author), Univ Puerto Rico, Dept Biol, POB 23360, Rio Piedras, PR 00931 USA |
Addresses:
1. Univ Puerto Rico, Dept Biol, Rio Piedras, PR 00931 USA
2. Texas A&M Univ, Dept Entomol, College Stn, TX 77843 USA
3. Univ Edinburgh, Inst Cell Anim & Populat Biol, Edinburgh EH9 3JT, Midlothian Scotland
4. Univ Melbourne, Dept Genet, CESAR, Parkville, Vic 3010 Australia |
| Publisher: NATURE PUBLISHING GROUP, MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND |
| Subject Category: Ecology; Evolutionary Biology; Genetics & Heredity |
| IDS Number: 911EJ |
| ISSN: 0018-067X |
| DOI: 10.1038/sj.hdy.6800619 |
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