File:Parasite180130-Figure 5 - spermatozoa of Bucephalidae.png

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English: Figure 5 of paper

Mature spermatozoon of Bucephalus margaritae.

  • (a)–(d) Cross-sections in region I of the spermatozoon showing the anterior extremity of the spermatozoon with only an external ornamentation of the plasma membrane, cortical microtubules under the plasma membrane and the lateral expansion (a). Then, the two axonemes appear progressively (b)–(c). In addition to the previous structures, the posterior extremity of this region exhibits undeveloped spine-like bodies (d).
  • (e)–(i) Cross-section in region II of the mature spermatozoon showing only the two axonemes and cortical microtubules (e); disorganization of axoneme 1 (f); only one axoneme and cortical microtubules (g); appearance of the mitochondrion and the nucleus (h–i).
  • (j)–(n) Cross-sections in the posterior region of the mature spermatozoon showing only the second axoneme, mitochondrion and nucleus (j), then disorganization of the axoneme (k), disappearance of the second axoneme (l), disappearance of the mitochondrion, and finally the posterior extremity of the mature spermatozoon with only the nucleus (m)–(n).
Aae2 = anterior extremity of the second axoneme, Ax1 = first axoneme, Ax2 = second axoneme, Ax = axoneme, Cm = cortical microtubules, Eo = external ornamentation, Le = lateral expansion, M = mitochondrion, Mi = microtubule, N = Nucleus, Pae1 = posterior extremity of the first axoneme, Pae2 = posterior extremity of the second axoneme, Sb = spine-like body. Scale Bars = 0.2 μm.
Date
Source (2018). "Ultrastructure of mature spermatozoa of three Bucephalidae (Prosorhynchus longisaccatus, Rhipidocotyle khalili and Bucephalus margaritae) and phylogenetic implications". Parasite 25: 65. DOI:10.1051/parasite/2018065. ISSN 1776-1042.
Author Papa Ibnou Ndiaye, Bernard Marchand, Cheikh Tidiane Bâ, Jean-Lou Justine, Rodney A. Bray and Yann Quilichini

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Parasite
Parasite
This file was published in the scientific journal Parasite. Their website states that all content of the journal including and after 2013 is published under the Creative Commons Attribution 4.0 license.

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