Description and phylogenetic position of Corlissina maricaensis gen. nov., sp. nov. (Karyorelictea, Geleiidae), a novel interstitial ciliate from Brazil, with redefinition of the family Geleiidae

International Journal of Systematic and Evolutionary Microbiology
Pedro H Campello-NunesInácio D Silva-Neto

Abstract

Corlissina maricaensis gen. nov., sp. nov. was obtained from samples of sediment collected in a brackish lagoon of Maricá city, Rio de Janeiro state, Brazil. The morphological description was based on live observations, after protargol staining, and scanning electron microscopy. The novel species has a cylindrical body shape that is slightly contractile, 230-550 × 35-65 μm, a cytoplasm with many globular inclusions, one row of irregular cortical granules between each somatic kinety, approximately 40-62 somatic kineties, two globular macronuclei measuring 9-24 μm and one micronucleus of approximately 4-9 μm. A subapical oral cavity was approximately 20-80 × 9-25 μm, with an adoral zone on the left side of the buccal field, which was composed of 32-60 polykineties and a paroral at the right side that was composed of 40-57 short polykineties. The new genus is distinguished from other geleiids by a loop-shaped posterior end of the paroral ciliature, made up of two rows of short polykineties, and the oralization of the central superior kinety (K0i), forming a row of dikinetids that borders the adoral zone internally, followed by several rows of monokinetids. In the phylogenetic analyses, the novel species was recovered as the sister...Continue Reading

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