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Published on: February 3, 2020
Morphology, morphogenesis, and molecular phylogeny of Aspidisca koreana n. sp. (Ciliophora, Euplotida) from South
Ji Hye Choi1, Atef Omar2, Jae-Ho Jung1
1Department of Biology, Gangneung-Wonju National University, Gangneung 25457, South Korea.
Abstract:
The morphology, morphogenesis, and molecular phylogeny of a new ciliate, Aspidisca koreana n. sp., discovered in the eastern coast of South Korea, were investigated. The morphological description is based on the observation of living cells, 4'-6-diamidino-2-phenylindole (DAPI) and silver-stained specimens (e.g., protargol, silver nitrate), and scanning electron micrographs. The new species is characterized by having a small body size (17-25 × 15-18 μm in vivo), a distinct peristomial spur on the posterior portion of left margin, seven frontoventral cirri in "polystyla-arrangement", and the arrangement of the anterior portion of adoral zone of membranelles, i.e., anteriormost membranelle is distinctly separated from the other three membranelles. The morphogenesis follows the typical pattern of this genus. Phylogenetic analyses, using the 18S rDNA sequence, also support the establishment of a new species.
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