Figure 3 in Evolution of sperm morphology in potamid freshwater crabs (Crustacea: Brachyura: Potamoidea)

Figure 3. Transmission electron microscopy (TEM) of potamid spermatozoa. A, B, Parathelphusula panningi. A, longitudinal sagittal view. B, cross section. C–F, Himalayapotamon emphysetum. C, longitudinal sagittal view; the arrowhead indicates the perforate operculum. D, 'tongue-and-groove' connection between the operculum and the acrosomal zones beneath. E, overview of cleistospermic spermatophores. F, cross section. Scale bars: 1 Mm, or as indicated. Abbreviations: arrowhead, vestigial 'tongue & groove connection'; ar, acrosome ray zone; ia, inner acrosomal zone; nu, nucleus; oa, outer acrosomal zone; op, operculum; pc, perforatorial chamber; tg, 'tongue-and-groove' connection; sw, spermatophore wall.

Published as part of Klaus, Sebastian & Brandis, Dirk, 2011, Evolution of sperm morphology in potamid freshwater crabs (Crustacea: Brachyura: Potamoidea), pp. 53-63 in Zoological Journal of the Linnean Society 161 (1) on page 58, DOI: 10.1111/j.1096-3642.2009.00625.x, http://zenodo.org/record/5756489

Keywords

Himalayapotamon, Arthropoda, Decapoda, Potamidae, Animalia, Biodiversity, Malacostraca, Taxonomy

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