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Titolo:
PREDICTED FITNESS CHANGES ALONG AN ENVIRONMENTAL GRADIENT
Autore:
DYKHUIZEN DE; DEAN AM;
Indirizzi:
SUNY STONY BROOK,DEPT ECOL & EVOLUT STONY BROOK NY 11794 UNIV HLTH SCI CHICAGO MED SCH,DEPT BIOL CHEM N CHICAGO IL 60064
Titolo Testata:
Evolutionary ecology
fascicolo: 5, volume: 8, anno: 1994,
pagine: 524 - 541
SICI:
0269-7653(1994)8:5<524:PFCAAE>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
ESCHERICHIA-COLI; BETA-GALACTOSIDASE; SELECTION; COMPETITION; NEUTRALITY; TEMPERATURES; PERFORMANCE; EVOLUTION; MODEL;
Keywords:
ESCHERICHIA-COLI; ENVIRONMENTAL GRADIENT; FITNESS; LACTOSE OPERON;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
43
Recensione:
Indirizzi per estratti:
Citazione:
D.E. Dykhuizen e A.M. Dean, "PREDICTED FITNESS CHANGES ALONG AN ENVIRONMENTAL GRADIENT", Evolutionary ecology, 8(5), 1994, pp. 524-541

Abstract

The relations between enzyme activity and the intensity of selection across an environmental gradient are investigated using Escherichia coli growing on mixed resources. Experimental results demonstrate that the direction and intensity of natural selection can be predicted solely from a knowledge of the underlying biochemistry, physiology and ecology of the organism. Ecological theory, based on the logistic equation, is unable to use this information to predict the outcome of competition - the best it can do is to fit constants to data points. Our results also suggest that partitioning of the phenotypic variance using quantitative genetics need not correspond to the underlying molecular structure generating phenotypes.

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Documento generato il 30/10/20 alle ore 09:47:23