- THIS ARTICLE
- Full Text (PDF)
- Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- CITING ARTICLES
- Citing Articles via HighWire
- Citing Articles via Google Scholar
- GOOGLE SCHOLAR
- Articles by Templeton, A. R.
- Articles by Johnston, J. S.
- Search for Related Content
- PUBMED
- PubMed Citation
- Articles by Templeton, A. R.
- Articles by Johnston, J. S.
Genetics, Vol 134, 475-485, Copyright © 1993
INVESTIGATIONS |
The Molecular Through Ecological Genetics of abnormal abdomen in Drosophila mercatorum. V. Female Phenotypic Expression on Natural Genetic Backgrounds and in Natural Environments
A. R. Templeton, H. Hollocher and J. S. Johnston
Department of Biology, Washington University, St. Louis, Missouri 63130
The abnormal abdomen (aa) syndrome in Drosophila mercatorum depends on the presence of R1 inserts in a third or more of the X-linked 28S rDNA genes and the absence of selective underreplication of inserted repeats in polytene tissues that is controlled by an X-linked locus (ur) half a map unit from the rDNA complex. This syndrome affects both life history and morphology in the laboratory. Because abnormal morphologies are rarely encountered in nature, the purpose of this study is to see if the female life history traits are still affected under more natural genetic backgrounds and environmental conditions. Two outbred stocks were extracted from the natural population living near Kamuela, Hawaii: KaaX that has only X chromosomes with ur(aa) alleles, and K+X that has only ur(+) alleles. These two stocks have nonoverlapping distributions of insert proportions, indicating strong disequilibrium between the ur locus and the rDNA complex. The KaaX stock had almost no morphological penetrance of ur(aa), indicating that genetic background is important. KaaX expressed longer female egg-to-adult developmental times, increased early adult female fecundity, and decreased female adult longevity compared with K+X. By bagging natural rots of the cactus Opuntia megacantha near Kamuela, Hawaii, it was shown that egg-to-adult developmental time is slowed down by 0.92 days in females bearing ur(aa) alleles in nature, with no detectable slowdown in ur(aa) males. The bagged rot data also indicate that females bearing ur(aa) alleles have a strong fecundity advantage in nature under some ecological conditions but not others.
This article has been cited by other articles:
 |
|
 |
|
  S. K. A. Robson, M. Vickers, M. W. Blows, and R. H. Crozier Age determination in individual wild-caught Drosophila serrata using pteridine concentration J. Exp. Biol., August 15, 2006; 209(16): 3155 - 3163. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. J. Clauss and T. Mitchell-Olds Functional Divergence in Tandemly Duplicated Arabidopsis thaliana Trypsin Inhibitor Genes Genetics, March 1, 2004; 166(3): 1419 - 1436. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
H. S. Malik and T. H. Eickbush Retrotransposable Elements R1 and R2 in the rDNA Units of Drosophila mercatorum: abnormal abdomen Revisited Genetics, February 1, 1999; 151(2): 653 - 665. [Abstract] [Full Text]
|
|