Phenotypic plasticity and reaction norms of abdominal bristle number in Drosophila melanogaster.
J Biosci
;
2005 Dec; 30(5): 689-97
Article
in English
| IMSEAR
| ID: sea-110676
ABSTRACT
The phenotypic plasticity of abdominal bristle number (segments 3 and 4 in females) was investigated in 10 isofemale lines from a French population, grown at 7 constant temperatures, ranging from 12 to 31 degrees C. Overall concave reaction norms were obtained with a maximum around 20-21 degrees C. Intraclass correlation (isofemale line heritability) was not affected by temperature. Correlations between segments 3 and 4 strongly contrasted a low within-line phenotypic correlation (r=0.39+/-0.04) and a high, between-line genetic correlation (r=0.89+/-0.03). A significant decrease of the genetic correlation was observed when comparing more different temperatures. Finally, among 7 other morphometrical traits which were measured on the same set of lines, 3 provided a significant positive genetic correlation with abdominal bristles thoracic bristles, abdomen pigmentation and thoracic pigmentation.
Full text:
Available
Index:
IMSEAR (South-East Asia)
Main subject:
Phenotype
/
Temperature
/
Genetic Variation
/
Female
/
Adaptation, Physiological
/
Statistics as Topic
/
Analysis of Variance
/
Drosophila melanogaster
/
Abdomen
/
Animals
Language:
English
Journal:
J Biosci
Year:
2005
Type:
Article
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