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  • Title: Identification of methyl farnesoate in the cypris larva of the barnacle, Balanus amphitrite, and its role as a juvenile hormone.
    Author: Smith PA, Clare AS, Rees HH, Prescott MC, Wainwright G, Thorndyke MC.
    Journal: Insect Biochem Mol Biol; 2000; 30(8-9):885-90. PubMed ID: 10876134.
    Abstract:
    Previous investigations have shown that insect juvenile hormone (JH) and its analogues induce precocious metamorphosis of barnacle cypris larvae. In the present study, methyl farnesoate (MF; structurally identical to JH III, except for the absence of an epoxide group) has been shown to have a concentration-dependent effect on the development of cyprids of the barnacle Balanus amphitrite. Analysis of cypris extracts by gas chromatography-mass spectrometry with selected ion monitoring (GC-MS-SIM) confirmed the presence of endogenous MF. These data provide evidence that MF functions as a juvenilizing hormone in barnacle cyprids, an effect that hitherto has not been noted.
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