Quantitative genetic analysis of the body size and shape of Drosophila buzzatii

Summary Body size in Drosophila is known to be closely related to a number of traits with important life history consequences, such as fecundity, dispersal ability and mating success. We examine the quantitative genetic basis of body size in three populations of the cactophilic species Drosophila bu...zzatii, which inhabit climatically different areas of Australia. Flies were reared individually to eliminate any common environmental component in a full-sib design with families split between two temperatures (18° and 25 °C). The means of several size measures differ significantly among populations while the genetic correlations among these traits generally do not differ, either among populations from different natural environments or between the different laboratory temperatures. This stability of correlation structure is necessary if laboratory estimates of genetic correlations are to have any connection with the expression of genetic variation in the field. The amount of variance due to genotype-by-environment interactions (family x temperature of development) varied among populations, apparently in parallel with the magnitudes of seasonal and diurnal variation in temperature experienced by the different populations. A coastal population, inhabiting a relatively thermally benign Ausführliche Beschreibung Beschreibung ausblenden

1. Person:	Thomas, Richard H.
Weitere Personen:	Barker, J. S. E
Quelle:	in Theoretical and applied genetics : TAG ; international journal of plant breeding research Vol. 85 (1993), p. 598-608 Weitere Artikel
Format:	Online-Artikel
Genre:	Phenotypic plasticity, Body size, Drosophila Buzzatii, Development temperature, Genotype x environment interactions
Sprache:	English
Veröffentlicht:	1993
Beschreibung:	Online-Ressource
Online Zugang:	Online
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Anmerkung:	Copyright: Copyright 1993 Springer-Verlag