A revision of the Suctoria (Ciliophora, Kinetofragminophora) 2. An Addendum to Acineta

Abstract

Diagnosis of TokophryaSuctorians whose outline may be oval, pyriform or triangular, not usually flattened laterally and only weaker so when they are. All species so far reported are freshwater. Lorica absent. Attached to invertebrates, aquatic plants or inanimate objects by means of a stalk. Tentacles arranged in 1 to 4 fascicles, usually situated on the apical surface. Actinophores, if present, simple rounded lobes and not ring-like. Reproduction by circum-invaginative endogenous budding resulting in ovoid larvae bearing 4 or 5 transverse ciliary rings. Macronucleus spherical to elongate. Key to the species of Tokophrya 1 . Tentacles in one or two fascicles Tentacles in more than two fascicles 2. All tentacles at apical end of body Most tentacles at apex but one fascicle at posterior end of body . 3. Tentacles in four fascicles on actinophores .... Tentacles in three fascicles not on actinophores. 4. Not epizooic, tentacles capitate, two contractile vacuoles . Epizooic, tentacles not capitate, one contractile vacuole . 5. Actinophores in centre of apical region surrounded by rim Actinophores at corners of apical region, not surrounded by rim 6. Tentacles in single fascicle Tentacles in two fascicles ........ 7. Single contractile vacuole, found on peritrichs .... Two contractile vacuoles, found on arthropods. 8. Tentacles long, stalk thinTentacles short but many, stalk thick 9. Ovoid body, many tentacles, stalk as long as body .Pyriform or irregular body, few tentacles, stalk half body length 10. Gregarious, grows in colonial groups Solitary 11. Junction of stalk with body simple (Fig. la) . Junction of stalk with body complex (Fig. Ib-d) T. fasciculatum . T. pyrum T. diaptomi , T. emarginata , T. quadripartita . T. manueli T. pygmaea T. okobojiensis T. carchesii T. glomerata Diagnosis of ErastophryaFreshwater or marine suctoria whose shape is pyriform, ovoid or irregularly so. Lorica and actinophores absent. Tentacles distributed all over body surface or restricted to anterior end. Posteriorly there are 2 or 3 cytoplasmic extensions that may be used as organelles of attachment. Reproduction by endogenous bud formation. Macronucleus ovoid, centrally located. Key to species of ErastophryaFreshwater, attached to peritrichs epizooic on fish, tentacles distributed all over body E. chattoni Marine, among algae, tentacles restricted to anterior half of body .. . E. odontophora family Malletiidae

Flectacineta(Ciliophora: Suctoria) from Egypt: New records and new species

“…Species of the suctorian genus Flectacineta Jankowski, 1978 are epibiotic on various taxa such as hydroids, marine algae, the cladoceran Bythotrephes longimanus (Curds 1987), the marine isopod Excirolana chiltoni (Fernandez-Leborans et al 2002), the marine angiosperm Thalassia testudinum , the roots of the angiosperm Rhizophora mangle L. , and the algae Bostrychia radicans and Polysiphonia binneyi (Aladro-Lubel et al 2006). Curds (1987) mentioned that the genus Paracineta was erected in order to comprise loricate suctoria with an apical group of tentacles that reproduced by external budding and that were longitudinally symmetrical.…”

“…Curds (1987) mentioned that the genus Paracineta was erected in order to comprise loricate suctoria with an apical group of tentacles that reproduced by external budding and that were longitudinally symmetrical. Collin (1911), who first described the genus Paracineta, did not include Paracineta livadiana (Mereschkowsky, 1881) in it.…”

“…Curds (1987) stated that the stalk is normally shown as being hollow, but not as an extension of the lorica, as the term stylotheca implies. Also, Curds (1987, p. 101) gave the following diagnosis for the genus Flectacineta "Marine loricate suctorian.…”

“…Reproduction by exogenous budding". Curds (1987) also transferred Paracineta dadayi (Daday, 1886) Kahl, 1934 and Acineta elegans Imhoff, 1883 to the genus Flectacineta. To date, four speciesFlectacineta livadiana (Mereschkowsky, 1881) Jankowski, 1978F.…”

“…To date, four speciesFlectacineta livadiana (Mereschkowsky, 1881) Jankowski, 1978F. dadayi (Daday, 1886) Curds, 1987, F. elegans (Imhoff, 1883) Curds, 1987;and F. isopodensis (Fernandez-Leborans et al, 2002) have been included in this genus.…”