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Title: Strains of the Morphospecies Ploeotia costata (Euglenozoa) Isolated from the Western North Pacific (Taiwan) Reveal Substantial Genetic Differences
Authors: Ya-Fan Chan;Kuo-Ping Chiang;Jeng Chang;Øjvind Moestrup;Chih-Ching Chung
Contributors: 國立台灣海洋大學:水產養殖系
Date: 2014
Issue Date: 2016-05-16T01:52:23Z
Publisher: Journal of Eukaryotic Microbiology
Abstract: Abstract:Two phagotrophic euglenid strains (Strains Pac and Tam) were isolated from
coastal locations in Taiwan. Ultrastructural characteristics of the strains included
five pellicle strips joined at the posterior end. The strips were formed by major
grooves with bifurcated edges. At the cell anterior, the feeding structure formed a
lip. Underneath the lip was a comb composed of layers of microtubules. Farther
back, two supporting rods tapered toward the posterior end, and a number of
vanes with attached microtubules were present between the rods. The morphological
characteristics agree with Ploeotia costata Strain CCAP 1265/1. However,
the 18S rDNA sequences of Strains Pac/Tam lacked a group I intron and possessed
three extra insertions of 116, 67, and 53 bp. Phylogenetic analysis indicated
low sequence similarity between Strains Pac/Tam and CCAP 1265/1 (92%).
The morphospecies P. costata apparently includes a substantial level of DNA
sequence divergence, and likely represents multiple molecular species units.
Appears in Collections:[Institute of Marine Biology] Periodical Articles

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