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Ontogeny of the Complex Sperm in the Macrostomid Flatworm Macrostomum lignano (Macrostomorpha, Rhabditophora)

Maxime Willems (UGent) , Frederic Leroux, Myriam Claeys (UGent) , Mieke Boone (UGent) , Stijn Mouton (UGent) , Tom Artois and Gaetan Borgonie (UGent)
(2009) Journal of Morphology. 270(2). p.162-174
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Abstract
Spermiogenesis in Macrostomum lignano (Macrostomorpha, Rhabditophora) is described using light- and electron microscopy of the successive stages in sperm development. Ovoid spermatids develop to highly complex, elongated sperm possessing an undulating distal (anterior) process (or ‘‘feeler’’), bristles, and a proximal (posterior) brush. In particular, we present a detailed account of the morphology and ontogeny of the bristles, describing for the first time the formation of a highly specialized bristle complex consisting of several parts. This complex is ultimately reduced when sperm are mature. The implications of the development of this bristle complex on both sperm maturation and the evolution and function of the bristles are discussed. The assumed homology between bristles and flagellae questioned.
Keywords
ultrastructure, bristles, Macrostomum, lignano, flatworm, spermiogenesis

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Citation

Please use this url to cite or link to this publication:

Chicago
Willems, Maxime, Frederic Leroux, Myriam Claeys, Mieke Boone, Stijn Mouton, Tom Artois, and Gaetan Borgonie. 2009. “Ontogeny of the Complex Sperm in the Macrostomid Flatworm Macrostomum Lignano (Macrostomorpha, Rhabditophora).” Journal of Morphology 270 (2): 162–174.
APA
Willems, Maxime, Leroux, F., Claeys, M., Boone, M., Mouton, S., Artois, T., & Borgonie, G. (2009). Ontogeny of the Complex Sperm in the Macrostomid Flatworm Macrostomum lignano (Macrostomorpha, Rhabditophora). Journal of Morphology, 270(2), 162–174.
Vancouver
1.
Willems M, Leroux F, Claeys M, Boone M, Mouton S, Artois T, et al. Ontogeny of the Complex Sperm in the Macrostomid Flatworm Macrostomum lignano (Macrostomorpha, Rhabditophora). Journal of Morphology. 2009;270(2):162–74.
MLA
Willems, Maxime, Frederic Leroux, Myriam Claeys, et al. “Ontogeny of the Complex Sperm in the Macrostomid Flatworm Macrostomum Lignano (Macrostomorpha, Rhabditophora).” Journal of Morphology 270.2 (2009): 162–174. Print.
@article{692343,
  abstract     = {Spermiogenesis in Macrostomum lignano
(Macrostomorpha, Rhabditophora) is described using
light- and electron microscopy of the successive stages in
sperm development. Ovoid spermatids develop to highly
complex, elongated sperm possessing an undulating distal
(anterior) process (or {\textquoteleft}{\textquoteleft}feeler{\textquoteright}{\textquoteright}), bristles, and a proximal
(posterior) brush. In particular, we present a
detailed account of the morphology and ontogeny of the
bristles, describing for the first time the formation of a
highly specialized bristle complex consisting of several
parts. This complex is ultimately reduced when sperm
are mature. The implications of the development of this
bristle complex on both sperm maturation and the evolution
and function of the bristles are discussed. The
assumed homology between bristles and flagellae questioned.},
  author       = {Willems, Maxime and Leroux, Frederic and Claeys, Myriam and Boone, Mieke and Mouton, Stijn and Artois, Tom and Borgonie, Gaetan},
  issn         = {1097-4687},
  journal      = {Journal of Morphology},
  keyword      = {ultrastructure,bristles,Macrostomum,lignano,flatworm,spermiogenesis},
  language     = {eng},
  number       = {2},
  pages        = {162--174},
  title        = {Ontogeny of the Complex Sperm in the Macrostomid Flatworm Macrostomum lignano (Macrostomorpha, Rhabditophora)},
  url          = {http://dx.doi.org/10.1002/jmor.10675},
  volume       = {270},
  year         = {2009},
}

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