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Fig. 2 | Helgoland Marine Research

Fig. 2

From: Ultrastructure of euspermatozoa and paraspermatozoa in the marine gastropod Adelomelon beckii (Caenogastropoda, Volutidae)

Fig. 2

Euspermatozoa of Adelomelon beckii. a LS of the junction of the nucleus (showing invagination and centriole/axoneme insertion) and anterior portion of mid-piece. b TS of the nucleus with centriolar fossa. c LS of the junction of mid-piece and glycogen piece. Note helical mid-piece elements (defined by dense U-shaped profiles) and the annular complex. d–f TS through the mid-piece until the end-piece. e TS of the glycogen piece. Note the putative granules. f TS of the end-piece, the axoneme is close to the membrane. an Annulus, ax axoneme, g putative glycogen granules, m mitochondrion, U U-shaped defining edge of mitochondrial element

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Helgoland Marine Research

ISSN: 1438-3888

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