Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/200250
Type: Artigo de periódico
Title: Connecting The Dots Of Nonlinear Reaction Norms Unravels The Threads Of Genotype-environment Interaction In Drosophila.
Author: Rocha, Felipe B
Klaczko, Louis B
Abstract: Two contrasting views can characterize the attitude of many studies toward reaction norms (RNs). An optimistic view attempts to use a linear model to describe RN variation; and a pessimistic view emphasizes RNs complexity without using any model to describe them. Here, we have analyzed the shape of 40 RNs of five traits of Drosophila mediopunctata in response to 11 temperatures. Our results, along with several other studies, show that RNs are typically curves best explained by nonlinear models. Estimating the set of 40 RNs on the basis of three rather than 11 temperatures produces a scenario, typical of the pessimistic view, where the linear model is either nonsignificant or a poor explanatory model. Moreover, we show that RN nonlinearity can significantly affect the conclusions of studies using the linear model. We propose a middle ground view on RNs which recognizes their general nonlinearity. Such view could, on the one hand, explain part of the important phenomenon of genotype-environment interaction emphasized by the pessimistic view. Moreover, it may explain features and patterns which are being ignored by the optimistic view. We suggest the parabolic model as first step to reveal patterns which were ignored before, or not fully appreciated.
Subject: Abdomen
Animals
Drosophila
Genetic Variation
Linear Models
Models, Statistical
Nonlinear Dynamics
Phenotype
Pigmentation
Temperature
Rights: fechado
Identifier DOI: 10.1111/j.1558-5646.2012.01702.x
Address: http://www.ncbi.nlm.nih.gov/pubmed/23106706
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

Files in This Item:
File SizeFormat 
pmed_23106706.pdf873.8 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.