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| Content Provider | Springer Nature Link |
|---|---|
| Author | Fox, Charles W. Wagner, James D. Cline, Sara Thomas, Frances Ann Messina, Frank J. |
| Copyright Year | 2008 |
| Abstract | Independent populations subjected to similar environments often exhibit convergent evolution. An unresolved question is the frequency with which such convergence reflects parallel genetic mechanisms. We examined the convergent evolution of egg-laying behavior in the seed-feeding beetle Callosobruchus maculatus. Females avoid ovipositing on seeds bearing conspecific eggs, but the degree of host discrimination varies among geographic populations. In a previous experiment, replicate lines switched from a small host to a large one evolved reduced discrimination after 40 generations. We used line crosses to determine the genetic architecture underlying this rapid response. The most parsimonious genetic models included dominance and/or epistasis for all crosses. The genetic architecture underlying reduced discrimination in two lines was not significantly different from the architecture underlying differences between geographic populations, but the architecture underlying the divergence of a third line differed from all others. We conclude that convergence of this complex trait may in some cases involve parallel genetic mechanisms. |
| Starting Page | 179 |
| Ending Page | 187 |
| Page Count | 9 |
| File Format | |
| ISSN | 00166707 |
| Journal | Genetica |
| Volume Number | 136 |
| Issue Number | 1 |
| e-ISSN | 15736857 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2008-11-28 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Callosobruchus Dominance Epistasis Host shift Hybrid Line cross Oviposition preference Microbial Genetics and Genomics Human Genetics Plant Genetics & Genomics Animal Genetics and Genomics Life Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Plant Science Medicine Animal Science and Zoology Insect Science |
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