THE EVOLUTIONARY HISTORY OF DROSOPHILA-BUZZATII .27. THORAX LENGTH IS POSITIVELY CORRELATED WITH LONGEVITY IN A NATURAL-POPULATION FROM ARGENTINA

被引：35
作者：
HASSON, E
FANARA, JJ
RODRIGUEZ, C
VILARDI, JC
REIG, OA
FONTDEVILA, A
机构：
[1] UNIV BUENOS AIRES,FAC CIENCIAS EXACTAS & NAT,DEPT CIENCIAS BIOL,GIBE,RA-1428 BUENOS AIRES,ARGENTINA
[2] UNIV AUTONOMA BARCELONA,DEPT GENET & MICROBIOL,E-08193 BARCELONA,SPAIN
来源：
GENETICA | 1993年 / 92卷 / 01期
关键词：
THORAX LENGTH; DROSOPHILA BUZZATII; LIFE HISTORY TRAITS; LONGEVITY; NATURAL SELECTION;
D O I：
10.1007/BF00057508
中图分类号：
Q3 [遗传学];
学科分类号：
071007 ; 090102 ;
摘要：
The correlation between body size and longevity was tested in an Argentinian natural population of Drosophila buzzatii. Mean thorax length of flies newly emerging from rotting cladodes of Opuntia vulgaris was significantly smaller than that of two samples of flies caught at baits. The present results which might be interpreted as directional selection for longevity favoring larger flies are in agreement with previous results achieved in a Spanish natural population of D. buzzatii. Flies emerging from different substrates showed significant differences in thorax length, suggesting that an important fraction of phenotypic variance can be attributed to environmental variability. However, laboratory and field work in different populations of D. buzzatii showed a significant genetic component for thorax length variation.
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页码：61 / 65
页数：5
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