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- Title
Adaptation to the laboratory environment in Drosophila subobscura.
- Authors
Matos; Rose; Pité, M. T. Rocha; Rego; Avelar; Matos
- Abstract
Adaptation to a novel environment is expected to have a number of features. Among these is a temporal increase in fitness and some or all of its components. It is also expected that additive genetic variances for these fitness characters will fall. Finally, it is expected that at least some additive genetic correlations will decrease, from positive toward negative values. In a study of several life-history variables in a Drosophila subobscura population sampled from the wild and then cultured in the laboratory, we did not find any such longitudinal trends over the first 29 generations. However, a temporal comparison (over 14 generations) of the later generations of this laboratory-adapted population with a new population, derived from a more recent wild-caught sample, indicated clearly that laboratory adaptation was nonetheless occurring. This study suggests the need for extensive replication and control in studies of the features of adaptation to a novel environment.
- Subjects
DROSOPHILA subobscura; BIOLOGICAL adaptation
- Publication
Journal of Evolutionary Biology, 2000, Vol 13, Issue 1, p9
- ISSN
1010-061X
- Publication type
Article
- DOI
10.1046/j.1420-9101.2000.00116.x