Conidophrys guttipotor Chatton et Lwoff, 1936 : 55

Dovgal, Igor & Mayén-Estrada, Rosaura, 2015, A taxonomic revision of order Pilisuctorida (Ciliophora, Apostomatia) with keys to the subordinate taxa, Zootaxa 4040 (5), pp. 543-558 : 551

Conidophrys guttipotor Chatton et Lwoff, 1936: 55 , charact. emend.

( Fig. 1 D–H)

Conidophrys pilisuctor Chatton et Lwoff, 1934 sensu Jones et Khan, 1970: 149 , syn. n. Mycodinium sp. sensu Jankowski, 2007: 880, syn. n.

The ciliate is an ectoparasite of the secretory setae of isopod crustaceans. The trophont stages are elongated, slightly curved. With a cyst wall relatively thickened, decreasing toward the distal end of the body, where the cyst is notably thin; at the proximal end of the cell body the cyst wall becomes more solid forming the stalk-like structure, irregular cone-shaped with crenate margin, covering one or several secretory setae of host. The trophont infraciliature arranged into two sublongitudal fields. The trophont macronucleus is elongate, irregular, and almost fills the body. The spherical micronucleus is often found in the distal region of the cell body. Reproduction by successive linear palintomy producing 2 or 3 discoid swarmers. Tomite has 1–3 circlets of cilia around its body.

Measurements (in µm): Trophont body length 50–60, diameter 15–20. Cyst wall thickness is about 5. Macronucleus size 40x 50 (after Chatton and Lwoff, 1936).

Type host: Sphaeroma serratum .

Type locality: lagoon L’etang de Thau ( France).

Figures

FIGURE 1. Ciliates of genus Conidophrys described by different authors. A— Mycodinium fucatum; B—trophont of Conidophrys pilisuctor; C—tomite of C. pilisuctor (lateral view); D—individual at the short seta of Jassa falcata; Eindividual of C. guttipotor at the short seta of Sphaeroma serratum; F—individual at the host non-secretory seta; G—trophont of Conidophrys sp. from Jaera albifrons with developing tomites (Mac—macronucleus; Mic—micronucleus; Cytcytopharynx): H—cucurbitoid stage of developing trophont from J. albifrons; I—the stalk and its base; J— Conidophrys enkystotrophos; K—trophont of C. pіtelkae, left lateral view; L—trophont of C. pіtelkae, right lateral view; M—young trophont of C. pіtelkae; N—ventral view of C. pіtelkae tomite (X—tube; Cy—cytostome). (A—modified from Averinzeff 1916: B-F—modified from Chatton and Lwoff 1936; G-I—modified from Jones and Khan 1970; J—modified from Jankowski 1972; K-N—modified from Bradbury 1975).