title: Benzoquinones in stages of the life-cycle of the cestode Spirometra mansonoides.
abstract: Ubiquinone-10 and rhodoquinone-10 were detected in stages of the life-cycle of a pseudophyllidean cestode, Spirometra mansonoides, by chromatographic, UV spectrophotometric, proton nuclear magnetic resonance spectrometric and electron impact mass spectrometric methods. Ubiquinone-10 was identified in 1-day-old eggs and coracidia, and rhodoquinone-10 in coracidia, plerocercoids and adult tapeworms. Tentative identification were also made of ubiquinone-10 in procercoids and rhodoquinone-10 in 10-day-old eggs. The roles of benzoquinones in helminth aerobic and anaerobic metabolism are discussed in relation to their distribution in stages of the S. mansonoides life-cycle.
mesh_terms: D000818:Animals; D005260:Female; D010063:Ovum / Q000032:analysis; D013146:Spirometra / Q000032:analysis* / Q000254:growth & development; D014451:Ubiquinone / Q000031:analogs & derivatives* / Q000032:analysis*
chemical_list: D014451:Ubiquinone; C003304:rhodoquinone