摘要: |
于1991年4月在青岛一贝类养殖池中采集到一大型腹毛目纤毛虫。研究表明,该纤毛虫代表一新属(伪小双虫属)并由此建立起一新组合—拉氏伪小双虫。该属特征为:左右各有一列纵行的腹棘毛,其右侧一列前端与口困带相接;有额、口棘毛分化;横棘毛高度发达并上行至虫体胞口后方。 |
关键词: 海洋纤毛虫 腹毛目 伪小双虫 新属 新组合 |
DOI: |
分类号: |
基金项目:国家自然科学基金!39370091 |
|
DESCRIPTION OF THE MARINE CILIATE PSEUDOAMPHISIELLA LACAZEI, (MAUPAS, 1883) NOV. GEN., Nov. COMB. (PROTOZOA, CILIOPHORA, HYPOTRICHIDA) |
Song Weibo
|
College of Fisherier, Ocean University Of Qingdao, Qingdao 266003
|
Abstract: |
As a result of the faunistic investigation on marine ciliates (collected from a shellfish cultural pond of Qingdao) supported by the NNSFC, a new
genus, Pseudoamphisiella and a new combination , Pseudoamphisiella lacazei (Maupas, 1883) (= formerly Holosticha lacazei, Maupas, 1883) are erected and redescribed :
Diagnosis of the new genus long ellipsoid Amphisiellidae (? ) with one left and one right marginal row each, which are connected posteriorly; frontoterminal, transverse and ventral rows derived from “ numerous” FVT- anlagen; frontal and buccal cirri present, transverse cirri extremely developed, no typical mid-ventral rows.
Type species Pseudoamphisiella lacazei (Maupas, 1883) nov. comb.
Remarks Pseudoamphisiella nov. gen. differs from the other morphologically “related” genera in the unique origin of the ventral ciliature, the connected marginal rows and highly developed transverse cirri.
The morphology and infraciliature of this species, after reinvestigation performed by the author, suggest that the new combination is justified. It is
distinguished with the following characters: large marine form in viva 200 - 300 × 70 – 100 μm with numerous short- bar- shaped subpellicular extrusomes. 50 – 60 macronucleus- segments; about 11 dorsal kineties and 66 - 73 marginal cirri; ca. 20 transverse cirri which extend onto the anterior 1/2 of the body. One frontoterminal and one ventral row, each with 14 - 16 and 16 - 21 cirri separately. Each of the obliquely arranged ventral cirri oriented (characteristically!) in an upper-right-to-down-left direction. |
Key words: Marine ciliate, Hypotrichida, Pseudoamphisiella, Nov. gen., Nov. comb. |