Issue |
Ann. Parasitol. Hum. Comp.
Volume 57, Number 3, 1982
|
|
---|---|---|
Page(s) | 237 - 243 | |
DOI | https://doi.org/10.1051/parasite/1982573237 | |
Published online | 15 September 2017 |
Mémoire
Existence d’une dualité morphologique chez l’oncomiracidium de Polystomoides nabedei Kulo, 1980, parasite de la vessie urinaire de Pelomedusa subrufa Lacépède, 1788, (Chélonien, Pelomedusidae)
Dual morphological structures in the oncomiracidium of Polystomoides nabedei Kulo, 1980, parasite of the bladder of Pelomedusa subrufa Lacépède, 1788 (Chelonia, Pelomedusidae).
1 Laboratoire de Parasitologie Comparée, Université des Sciences et Techniques du Languedoc, Place Eugène-Bataillon, F 34060 Montpellier Cedex. (ERA CNRS 915), France
2 Laboratoire de Parasitologie, École des Sciences, Université du Bénin, BP 1515, Lomé, Togo
Accepté : 26 Novembre 1981
Description de l’oncomiracidium (hapteur, cellules ciliées, chétotaxie) de Polystomoides nabedei Kulo, 1980, parasite de la vessie urinaire de Pelomedusa subrufa Lacepede, 1788, Chelonien d’eau douce au Togo. Il existe deux types, l’un correspondant à des oncomiracidiums nageants possédant 64 cellules ciliées, l’autre à des oncomiracidiums rampants, non ciliés. L’étude de la chétotaxie confirme l’absence, chez les larves non nageantes, des trois paires de sensilles postoculaires dorsales qui caractérisent les oncomiracidiums ciliés.
Cette dualité morphologique pose, pour la première fois chez un Polystomatidae de Chélonien, le problème d’un éventuel cycle interne.
Abstract
We described here the oncomiracidium (haptor, ciliated cells and chaetotaxy) of Polystomoides nabedei Kulo, 1980 parasite of the bladder of Pelomedusa subrufa Lacépède, 1788 a freshwater chelonian from Togo.
There are two types of larvae, one being a free-swimming larva with 64 ciliated cells, the other a creeping non-ciliated larva. A study of the chaetotaxy of the non-free-swimming larvae has confirmed the absence of the three pairs of post-ocular dorsal sensilla, characteristic of ciliated oncomiracidia.
Thus, for the first time in a chelonian Polystomatidae, such a duality of morphological structure raises the possibility of an internal cycle.
© Masson, Paris 1982, transferred to Société Française de Parasitologie
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