Morphogenesis of the flagellum in the spermatids of Coelomera lanio (Coleoptera, Chrysomelidae): ultrastructural and cytochemical studies.
The flagellum of Coelomera lanio has a single axoneme with a 9 + 9 + 2 axoneme pattern and the microtubules are linked to the E-PTA positive dinein arms. The electron-dense fibres between microtubules show a positive acid phosphatase reaction. A single E-PTA positive accessory body is seen flanking the axoneme, from which extends a puff-like corpuscle. On the opposite side of the accessory body, away from the axoneme, exists another puff-like corpuscle. The mitochondrial complex gives rise to two mitochondrial derivatives of different shapes and sizes. The major derivative possesses a paracrystalline corpuscle and the minor has an electron-dense area in the juxta-axonemal region. All these structures are involved in the mechanism of flagellar motility.
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Department of Genetics and Morphology, University of Brasília, Brazil.
D000469:Alkaline Phosphatase / Q000032:analysis; D000818:Animals; D001517:Coleoptera; D008297:Male; D008854:Microscopy, Electron; D008870:Microtubules / Q000201:enzymology / Q000648:ultrastructure; D008928:Mitochondria / Q000648:ultrastructure; D009024:Morphogenesis; D013082:Sperm Tail / Q000201:enzymology / Q000648:ultrastructure*
D000469:Alkaline Phosphatase