Infraciliature, système myonémique, argyrome et bipartition de l'Astylozoon pyriforme (Ciliophora, Peritrichida)

Abstract

Astylozoon pyriforme is a stalkless peritrich whose ciliature is restricted to the oral region and reduced to a few aboral bristles at the posterior pole. As in other peritrichs, the infraciliature is located in two zones, oral (peristome and infundibulum) and aboral (trochal band and scopule). We also observed an epistomial membrane located in the region where the peristomial infraciliature begins, to the right of the haplokinety. The myonemic system of this ciliate has three parts: an oral myonemic ring, a peristomial myonemic network, and longitudinal myonemes. The argyrome consists of 35 to 40 thin concentric striations that surround the cell but not the peristome. During the stomatogenic process, the germinal kinety and the haplokinety are the origin of the new buccal structures, as in other peritrichs.

Evolution of Variations in the Common Pattern of Stomatogenesis in Peritrich Ciliates: Evidence from a Comparative Study Including a New Description of Stomatogenesis in Pseudepistylis songi Peng et al.,

“…86; Guinea et al. ). All these authors indicated that all three rows will elongate toward the cytostome except Wu et al.…”

“…118, 119), the kinetosomes of the Gk proliferate to form a relatively elongate GA that extends toward the cytostome (Esteban and Fernández‐Galiano ; Guinea et al. ; Lom ; Sola et al. ).…”

“…86, 87), which is essentially a slender band of kinetosomes (Guinea et al. ). Eperon () observed that GR1 of T .…”

“…85–90 and Table ), the parental Hk is inherited intact by the 1OC to become 1Hk (Guinea et al. ; Sola et al. ).…”

Infraciliature and myoneme system ofCampanella umbellaria(Protozoa, Ciliophora, Peritrichida)

“…Previous studies on the peritrich myoneme system have been carried out on a variety of taxa, including: Opisthonecta spp., Carchesium polypinum, Epicarchesium granulatum, Epistylis plicatilis, Heteropolaria colisarum, Vorticella spp., Hastatella spp., and Astylozoon spp. (Wang, 1950;Bradbury, 1965;Zagon, 1970;Foissner, 1977;Foissner and Schubert, 1977;Fernandez-Leborans, 1982;Sola et al, 1985;Guinea and Fernandez-Galiano, 1987;Guinea et al, 1988;Fernandez-Galiano and Carrascosa, 1989;Foissner et al, 1992;Leitner and Foissner, 1997). and is now routinely included in studies of peritrich morphology (Foissner et al, 1992, and references therein).…”