Environmental effects on body size variation in Drosophila melanogaster and its cellular basis
| Autor: | G. H. De Moed, G. De Jong, W. Scharloo |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Cellular basis
animal structures Zoology Cell Count Body size Environment medicine.disease_cause Cell size Genetic variation Genetics medicine Animals Wings Animal Cell Size Wing biology Environmental factor Genetic Variation General Medicine biology.organism_classification Variation (linguistics) Drosophila melanogaster Body Constitution Female |
| Zdroj: | Genetical research. 70(1) |
| Popis: | Eight isofemale lines of Drosophila melanogaster were raised at four temperatures and at four yeast concentrations in their food. Temperature and food show a significant interaction in determining wing length and thorax length, affecting mean size per line and genetic variation between lines. The combination of low temperature and poor food conditions leads to a sharp increase in the genetic variation over lines of both body size characters. The increase in genetic variation in wing length under less favourable conditions is due to an increase in genetic variation of both cell size and cell number. Changes in wing area in response to both temperature and food level follow a common cell size/cell number trajectory. Changes in wing size are obtained by line-specific changes in the cellular composition of the wing, rather than by changes specific for the environmental factor. |
| Databáze: | OpenAIRE |
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