The fine structure of the sea urchin spermatozoa as revealed by the electron microscope

Afzelius, Björn A.

doi:10.1007/bf00335087

Cited by 118 publications

(28 citation statements)

References 23 publications

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“…-Our results are in accordance with previously published studies (Reeve, 1935;Tryon, 1949;Afzelius et al 1954;Kempf, 1973;Minaki, 1984;Stafford, 1991;Tryon & Lugardon, 1991). Minaki (1984) includes three specimens representing different geographical areas (North America, Europe, and Japan).…”

Section: Megaspore Descriptionssupporting

confidence: 93%

Megaspore morphology in the Selaginellaceae in a phylogenetic context: A study of the megaspore surface and wall structure using scanning electron microscopy

Korall

Taylor

2006

Grana

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Section: Megaspore Descriptionssupporting

confidence: 93%

Megaspore morphology in the Selaginellaceae in a phylogenetic context: A study of the megaspore surface and wall structure using scanning electron microscopy

Korall

Taylor

2006

Grana

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“…The major orientation, however, is longitudinal, as is also the case in the above micrographs of Rowley (1995). The dimensions wide hmellatiOnS in the micrograph Of Afzelius et al (1954; shown also in Erdtman 1956: Fig. 2).…”

Section: A L T I I I~ Incann (Figs 3 13 and 14)mentioning

confidence: 91%

Substructure of spore and pollen grain exines inLycopodium, Alnus, Betula, FagusandRhododendron

Wittborn

Rao

El‐Ghazaly

et al. 1996

Grana

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“…Even ff the strikingly more generous dimensions of the Mytilus acrosome are disregarded, its general construction bears little resemblance to that of either the sea urchin (1,8) or the starfish (6,9) acrosome. With the Hydroides acrosome (2), on the other hand, it has several characteristics in common.…”

Section: Discussionmentioning

confidence: 99%

THE ACROSOME REACTION IN MYTILUS EDULIS

Niijima

Dan

1965

The Journal of Cell Biology

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The intact acrosome of the Mytilus edulis spermatozoon consists of a conical vesicle, the basal side of which is deeply invaginated so that the whole vesicle forms a sheath around a very slender axial rod, about 2.7/z long, inserted in a tube passing through the nucleus. The annular base of the acrosomal vesical is filled with a homogeneous substance; the outer wall of the vesicle is lined with a somewhat irregular layer of a particulate substance interspersed with very fine tubular elements, and its lumen is nearly filled by a strand of material which extends from the inner tip of the invagination to the apex of the acrosome. The lumen of the invagination appears empty except for the rod and a delicate sleevelike structure which surrounds it. The plasma membrane of the sperm cell lies in immediate contact with the acrosomal membrane over its whole outer surface. In its general organization, this molluscan acrosome shows a rather close homology with that of the annelid Hydroides.

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The fine structure of the sea urchin spermatozoa as revealed by the electron microscope

Cited by 118 publications

References 23 publications

Megaspore morphology in the Selaginellaceae in a phylogenetic context: A study of the megaspore surface and wall structure using scanning electron microscopy

Megaspore morphology in the Selaginellaceae in a phylogenetic context: A study of the megaspore surface and wall structure using scanning electron microscopy

Substructure of spore and pollen grain exines inLycopodium, Alnus, Betula, FagusandRhododendron

THE ACROSOME REACTION IN MYTILUS EDULIS

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