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Title: Sperm characters of the aspidogastrean Rohdella amazonica (Aspidogastridae, Rohdellinae), a parasite of the banded puffer fish Colomesus psittacus
Author: Giese, Elane G.
Pinheiro, Raul Henrique S.
Swiderski, Zdzislaw
Miquel Colomé, Jordi
Keywords: Cèl·lules germinals
Ultraestructura (Biologia)
Germ cells
Ultrastructure (Biology)
Issue Date: Jan-2020
Publisher: Springer Verlag
Abstract: The ultrastructural characteristics of the mature spermatozoon of the aspidogastrean Rohdella amazonica (Aspidogastridae, Rohdellinae) were studied by means of transmission electron microscopy. The sperm cell shows two axonemes of the 9 + '1' trepaxonematan pattern of Platyhelminthes, parallel cortical microtubules, a well-developed lateral expansion, external ornamentation of the plasma membrane, one mitochondrion, an electron-dense ring, a nucleus and granules of glycogen. The present results were compared with those observed in the aspidogastreans studied to date and in other Platyhelminthes. The lateral expansion and the electron-dense ring are typical characters for aspidogastreans. Although a lateral expansion has been described in other Platyhelminthes such as monogeneans and digeneans, the Aspidogastrea shows a much larger lateral expansion with both peripheral and internal microtubules. The dense ring is observed as a cylinder in a longitudinal view and shows a more granular appearance in sperm cells from the seminal vesicle in comparison to a more electron-dense appearance in sperm cells from the seminal uterine receptacle.
Note: Versió postprint del document publicat a:
It is part of: Parasitology Research, 2020, vol. 119, num. 1, p. 137-144
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ISSN: 0932-0113
Appears in Collections:Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))
Articles publicats en revistes (Biologia, Sanitat i Medi Ambient)

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