Evolutionary endocrinology of juvenile hormone esterase in Gryllus assimilis: direct and correlated responses to selection.

Genetics
A J. Zera, C Zhang

Abstract

Hemolymph juvenile hormone esterase (JHE) activity on the third day of the last stadium in the cricket, Gryllus assimilis, exhibited a significant response to selection in each of six replicate lines. Mean realized heritability was 0.26 +/- 0.04. The response was due to changes in whole-organism enzyme activity as well as to changes in the proportion of enzyme allocated to the hemolymph compartment. In vivo juvenile hormone metabolism differed between some lines selected for high vs. low enzyme activity. Only minimal differences were observed between lines with respect to hemolymph protein concentration or whole-cricket activity of juvenile hormone epoxide hydrolase, the other major JH-degrading enzyme. Dramatic correlated responses to selection, equal in magnitude to the direct response, were observed for JHE activity on each of three other days of the last juvenile stadium. In contrast, no correlated responses in JHE activity were observed in adults. This indicates that JHE activities throughout the last stadium will evolve as a highly correlated unit independent of adult activities and the evolution of endocrine mechanisms regulating juvenile development can be decoupled from those controlling adult reproduction. This study ...Continue Reading

Citations

May 7, 2005·Evolution & Development·Armin P Moczek, Lisa M Nagy
Mar 28, 2006·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Anthony J Zera
Oct 6, 2000·Molecular Phylogenetics and Evolution·Y HuangA Zera
Feb 24, 2007·General and Comparative Endocrinology·Don Bradshaw
Jun 15, 2006·Development Genes and Evolution·Armin P MoczekBethany R Kesselring
Jan 3, 2001·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·J D Evans, D E Wheeler
Nov 25, 2016·Proceedings. Biological Sciences·Frances Bonier, Paul R Martin
Dec 26, 2001·Archives of Insect Biochemistry and Physiology·Anthony J ZeraLawrence Harshman
Aug 10, 2002·Evolution & Development·Armin P Moczek, H Frederik Nijhout
Jun 25, 1999·Insect Biochemistry and Molecular Biology·N E Gruntenko Rauschenbach IYu

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