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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