AI Article Synopsis
- The study focused on the ecdysteroid composition and levels in both adult and egg stages of the invasive pest Opogona sacchari.
- The ecdysteroid titer was significantly higher in female adults (5.978 ng/adult) compared to male adults (0.080 ng/adult) four days post-eclosion.
- Ecdysteroid levels varied during ovary and egg development, peaking at 10.48 ng/ovary on day 3 and showing a slight drop from 0.010 ng/egg to 0.006 ng/egg between days 3 and 4, with three main ecdysteroid components identified.
Article Abstract
In order to understand the composition and quantitative variation of ecdysteroids in the adults and eggs of Opogona sacchari (Bojer), an invasive alien pest, we analyzed the ecdysteroid composition and titers in the adult and egg of this pest. On day 4 after eclosion, the titer of ecdysteroids in the male adult was 0.080 ng/adult, much lower than 5.978 ng/adult in the female adult. During the development of ovaries, the titer of ecdysteroids was low on the first two days, and high in the late period, with the peak (10.48 ng/ovary) appearing on day 3. During the development of eggs, the titer of ecdysteroids was about 0.010 ng/egg from day 1 to day 3, and then decreased to 0.006 ng/egg on day 4. In both adults and eggs, three main components of ecdysteroids were found by identification of HPLC/RIA. They were 20-hydroxyecdysone, 26-hydroxyecdysone, and an unidentified component.
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| http://dx.doi.org/10.1007/s11427-008-0024-x | DOI Listing |
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