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Mechanisms of Life History EvolutionThe Genetics and Physiology of Life History Traits and Trade-Offs$
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Thomas Flatt and Andreas Heyland

Print publication date: 2011

Print ISBN-13: 9780199568765

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199568765.001.0001

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Intermediary metabolism and the biochemical-molecular basis of life history variation and trade-offs in two insect models

Intermediary metabolism and the biochemical-molecular basis of life history variation and trade-offs in two insect models

Chapter:
Chapter 24 Intermediary metabolism and the biochemical-molecular basis of life history variation and trade-offs in two insect models
Source:
Mechanisms of Life History Evolution
Author(s):

Anthony J. Zera

Lawrence G. Harshman

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199568765.003.0024

Recent studies have shown that changes in intermediary metabolism are correlated with and likely contribute significantly to evolutionary changes in individual life history traits, and trade-offs between traits. This chapter reviews recent studies, focusing on intensive work performed on Drosophila and Gryllus crickets. It focuses on integrative studies that examine the chain of causality from alterations in DNA sequence/expression, to altered enzyme activity, flux through metabolic pathways, and altered production of key end products of metabolism in phenotypes which exhibit life history trade-offs. The chapter also discusses the role of evolutionary changes in regulation as a mechanism for evolving coordinate changes in many enzymes, leading to altered flux of single pathways and integrated flux changes in multiple pathways.

Keywords:   intermediary metabolism, trade-offs, pathway flux, resource allocation, enzymology, lipid, glycolysis, Gryllus, Drosophila

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