Nutritional regulation of JH synthesis: a mechanism to control reproductive maturation in mosquitoes?

Insect Biochemistry and Molecular Biology
F G Noriega

Abstract

Juvenile hormone (JH) titers must be modulated to permit the normal progress of development and reproduction in mosquitoes. In adult female Aedes aegypti, JH levels are low at adult eclosion, elevated in sugar-fed females and low again after a blood meal. Although degradation plays a role, JH titer is fundamentally determined by the rate of biosynthesis in the corpora allata gland (CA). CA from newly eclosed females (0-1 h after emergence) exhibit a very low basal JH biosynthetic activity, Aedes-allatotropin stimulates the CA in newly emerged females to produce JH. There is a correlation between nutritional reserves at adult emergence (teneral reserves) and CA activity. JH synthesis is significantly reduced in teneral females that emerge with low nutritional reserves. Taking a blood meal results in a reduction of CA activity. The biosynthetic activity of Ae. aegypti CA is significantly inhibited by factors present in the head, as well as by Anopheles gambiae PISCF-allatostatin. Nutritional signals affect the release of allatotropin and allatostatins by the brain resulting in the activation or inhibition of JH synthesis. JH is therefore an important part of a transduction mechanism that connects changes in the nutritional status...Continue Reading

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Citations

Apr 2, 2013·Insect Biochemistry and Molecular Biology·Meritxell Pérez-HedoFernando G Noriega
Nov 28, 2008·Proceedings of the National Academy of Sciences of the United States of America·David W RogersFlaminia Catteruccia
Sep 14, 2006·Annual Review of Entomology·Barbara Stay, Stephen S Tobe
Mar 8, 2014·PLoS Pathogens·Stavros StathopoulosGeorge K Christophides
Feb 21, 2014·Journal of the American Mosquito Control Association·Peter Joseph Brabant, Stephen L Dobson
Jan 8, 2010·Journal of Insect Science·Kathryn RayJames T Nishiura
Sep 27, 2014·Insect Biochemistry and Molecular Biology·Maria AreizaFernando G Noriega
Nov 27, 2009·Proceedings of the National Academy of Sciences of the United States of America·Jaime G MayoralFernando G Noriega
May 11, 2011·Insect Biochemistry and Molecular Biology·Marcela NouzovaFernando G Noriega
Dec 3, 2014·Journal of Insect Physiology·Salvador Hernández-MartínezFernando G Noriega
Jan 27, 2009·Biochemical and Biophysical Research Communications·Li CaoDavid F Grant
Nov 6, 2008·Insect Biochemistry and Molecular Biology·Jaime G MayoralFernando G Noriega
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Aug 11, 2015·Insect Biochemistry and Molecular Biology·Maria AreizaFernando G Noriega
May 4, 2013·Insect Biochemistry and Molecular Biology·Crisalejandra Rivera-PerezFernando G Noriega
May 17, 2014·Insect Biochemistry and Molecular Biology·Crisalejandra Rivera-PerezFernando G Noriega
Jan 27, 2015·Journal of Insect Physiology·Yu Kaneko, Kiyoshi Hiruma
Mar 5, 2013·General and Comparative Endocrinology·Pieter Van WielendaeleJozef Vanden Broeck
Apr 9, 2020·Journal of Medical Entomology·Eileen H Jeffrey GutiérrezGoggy Davidowitz
Jan 1, 2014·International Scholarly Research Notices·Fernando G Noriega
Mar 20, 2021·Frontiers in Physiology·Octavio A C TalyuliGabriela O Paiva-Silva
Apr 13, 2021·Journal of Insect Physiology·Kylie Zirbel Yanchula, Barry W Alto
Feb 2, 2006·The Journal of Experimental Biology·Aparna TelangMark R Brown
May 7, 2021·Scientific Reports·Lilian Valadares ToseFrancisco Fernandez-Lima

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