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|Title: ||Redescriptions and SSrRNA gene sequence analyses of two marine species of aspidisca (Ciliophora, Euplotida), with notes on the morphogenesis in A. orthopogon|
|Authors: ||Lin, Liqiong|
AL--Rasheid, Khaled A. S.
AL-Farraj, Saleh A.
AL-Quraisy, Saleh A.
|Issue Date: ||2008 |
|Citation: ||Acta Protozool: 47; 83–94|
|Abstract: ||Based on the living observation and silver impregnation methods, two poorly defined marine euplotid ciliates, Aspidisca orthopogon
Deroux and Tuffrau, 1965 and Aspidisca aculeata (Ehrenberg, 1838) Kahl, 1932, from coastal waters near Qingdao (Tsingtao),
northern China, were investigated. Improved diagnoses and morphometric data are provided for both species. As an additional contribution,
the morphogenesis in Aspidisca orthopogon during binary fission was re-examined and can be summarized as follows: 1) the parental adoral
zone of membranelles and paroral membrane are retained by the proter; 2) the oral primordium of the opisthe develops hypoapokinetally
in a sub-surface pouch below the posterior part of the adoral zone of membranelles; 3) five frontoventral-transverse cirral anlagen are
formed de novo, initially as primary primordia, and develop into 3:3:2:3:1 cirri from left to right respectively in both dividers; 4) the leftmost
frontoventral cirrus is generated from an independently formed cirral anlage in both dividers.|
|Description: ||1Laboratory of Protozoology, KLM, Ocean University of China, Qingdao, China; 2Department of Zoology, Natural History Museum,
London, UK; 3Zoology Department, King Saud University, Riyadh, Saudi Arabia|
|Appears in Collections:||King Saud University Initial Collection|
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