التفاصيل البيبلوغرافية
| العنوان: |
Evolution of starvation resistance in Drosophila melanogaster: measurement of direct and correlated responses to artificial selection. |
| المؤلفون: |
SCHWASINGER-SCHMIDT, T. E., KACHMAN, S. D., HARSHMAN, L. G. |
| المصدر: |
Journal of Evolutionary Biology; Feb2012, Vol. 25 Issue 2, p378-387, 10p |
| مصطلحات موضوعية: |
INSECT reproduction, DROSOPHILA melanogaster, STARVATION, ANIMAL breeding, MACROMOLECULES, BIOLOGICAL adaptation, INSECT genetics, PROTEINS, INSECT physiology |
| مستخلص: |
Laboratory selection for resistance to starvation has been conducted under relatively controlled conditions to investigate direct and correlated responses to artificial selection. With regard to starvation resistance, there are three physiological routes by which the trait can evolve: resource accumulation, energy conservation and starvation tolerance. A majority of energetic compounds and macromolecules including triglycerides, trehalose and other sugars, and soluble protein increased in abundance as a result of selection. Movement was additionally investigated with selected males moving less than control males and selected females exhibiting a similar response to selection. Results obtained from this study supported two of the possible evolutionary mechanisms for adaptation to starvation: energy compound storage and conservation. If the response to selection is based on an evolutionarily conserved pattern of genetic correlations (elevated lipid, elevated sugars and reduced movement), then the response to selection is medically relevant and the genetic architecture should be investigated in depth. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Evolutionary Biology is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder