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Research Article

Table 1.

Available data on the ultrastructure of the spermatozoon in the Bucephalidae.

Spermatozoon characters
Principal characters
Secondary characters
Subfamilies and species TAx Le Eo Eo + Cm LEo BCm LMCm M Adm Sb Cob Psc Spermatozoon type References
Bucephalinae
Bucephalus margaritae 9 + “1” + + + AntA 2 AntS 1 + N V Present study
Prosorhynchoides arcuatus 9 + “1” + + + AntA 2 AntS 1 + N V [10]
Rhipidocotyle khalili 9 + “1” + + + AntA 2 AntS 1 N V Present study
Prosorhynchinae
Prosorhynchus aculeatus 9 + “1” + + + AntA 2 AntS 1 + Mi V [14]
Prosorhynchus longisaccatus 9 + “1” + + + AntA 2 AntS 1 + Mi V Present Study

Notes. Adm = anterior electron-dense material, AntA = anterior part of the anterior region, AntS = anterior region of the spermatozoon, BCm = number of bundles of cortical microtubules, Cm = cortical microtubules, Cob = cytoplasmic ornamented buttons, Eo = external ornamentation of plasma membrane, Eo + Cm = association of external ornamentation with cortical microtubules, Le = lateral expansion, LEo = location of external ornamentation, LMCm = location of maximum number of cortical microtubules, M = number of mitochondria, Mi = microtubule, N = nucleus, Psc = posterior spermatozoon character, Sb = spine-like bodies, TAx = type of axoneme, +/− = presence/absence of considered character.

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