PMID: 12770450Aug 1, 1997Paper

Hemolymph juvenile hormone titers in pupal and adult stages of southwestern corn borer [Diatraea grandiosella (pyralidae)] and relationship with egg development

Journal of Insect Physiology
A SrinivasanS Shu

Abstract

Juvenile hormones I, II and III were monitored in hemolymph of pupal and adult stages of various ages of Diatraea grandiosella females. JH III was the predominant homologue followed by JH II, and JH I was rarely detectable. At day 5 after pupation, no JH was detectable. JH titers increased from 7.5days after pupation to a peak of 24.8ngml(-1) JH II and 26ngml(-1) JH III at adult emergence and then declined to low levels by 24h after emergence. Ovarian development in D. grandiosella parallels changes in hemolymph JH titers, but the role of JH in vitellogenesis is unclear since the time of vitellogenesis initiation has yet to be determined. No apparent vitellogenin deposition was observed in eggs 5days after pupation. Some oocytes were partially vitellogenic by 7.5days after pupation and oocytes continued to grow afterwards, but no oocytes were chorionated during the pupal stage. Chorionated oocytes were observed in 24-h-old female moths. Juvenile hormone is essential for chorion formation in this species, because decapitated pupae treated with 10&mgr;g JH III in corn oil developed chorionated oocytes while decapitated pupae treated with corn oil did not.

Citations

Jul 28, 1999·Archives of Insect Biochemistry and Physiology·T J WebbS Dorn
Jul 21, 2011·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Clint A PenickColin S Brent
Dec 10, 1999·Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology·K J Venugopal, D Kumar
Jul 6, 2000·Insect Biochemistry and Molecular Biology·S B RamaswamyA Srinivasan
Nov 14, 2002·Insect Biochemistry and Molecular Biology·T J ColeS B Ramaswamy
Aug 29, 2012·PloS One·Crisalejandra Rivera-PerezFernando G Noriega
Oct 12, 2010·Journal of Insect Physiology·Andrea Wirmer, Ralf Heinrich
Jul 14, 2007·Insect Biochemistry and Molecular Biology·Zhaorigetu ChenMary Ann Rankin
Jan 30, 2007·Journal of Insect Physiology·Dale B GelmanSonny B Ramaswamy
Aug 6, 2005·Journal of Insect Physiology·Colin S BrentEdward L Vargo
Jun 6, 2012·Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences·A M AresJ Bernal
May 2, 2014·Frontiers in Physiology·Dai WatanabeKiyoto Maekawa
Nov 11, 2011·The Journal of Experimental Biology·Navdeep S MuttiGro V Amdam
Jan 17, 2012·The Journal of Experimental Biology·Adam G DolezalGro V Amdam
Feb 12, 2010·Cold Spring Harbor Protocols·Colin Brent, Adam Dolezal

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