MORPHOLOGY AND MORPHOGENESIS OF CIRCINELLA-ARENICOLA NOV-GEN, NOV-SPEC, A CEPHALIZED HYPOTRICH (CILIOPHORA, HYPOTRICHIDA) FROM SAND DUNES IN UTAH, USA
MORPHOLOGY AND MORPHOGENESIS OF CIRCINELLA-ARENICOLA NOV-GEN, NOV-SPEC, A CEPHALIZED HYPOTRICH (CILIOPHORA, HYPOTRICHIDA) FROM SAND DUNES IN UTAH, USA
复制标题
DOI：
10.1016/s0932-4739(11)80026-x
复制
发表时间：
1994-05-27
影响因子：
2.9
通讯作者：
FOISSNER, W
中科院分区：
文献类型：
--
作者：
FOISSNER, W
沙生卷枝藻新属，在美国犹他州的珊瑚粉沙丘的一种沙屑混合物中发现了这种细菌。其形态和形态发生进行了研究，在活细胞和浸渍protargol的标本。新属，Circinella，可能属于枝毛科，是唯一的，有一个丝状的身体，一个短排的腹侧纤毛发展apokinetally，1左和1右边缘行，既没有横向也没有尾侧纤毛。后体的口器、额腹纤毛器和前体的腹列的发生和发育没有亲代纤毛的参与。新种为C. arenicola，测量约400 × 22微米，是第一个头部化的，非海洋hypotrich。它缩短和增宽显着分裂和吸收一些大核结节。本文报道了两个新组合种，即原属Perisincirra和Hemisincirra的C. filiformis（Foissner，1982）nov.comb.（学名：Perisincirra filiformis）和C. vettersi（Berger & Foissner，1989）nov. comb.（学名：Hemisincirra vettersi）.一个图解和形态测定的关键Circinella物种提供。本文还讨论了该属的系统位置和头状花序的适应价值。23种纤毛虫与C. arenicola和被列入生态部分。
Circinella arenicola nov. gen., nov. spec. was discovered in a sand-litter mixture from the Coral Pink Sand Dunes in Utah, USA. Its morphology and morphogenesis were studied in live cells and in specimens impregnated with protargol. The new genus, Circinella, possibly belongs to the family Cladotrichidae and is unique by having a filiform body, a short row of ventral cirri developing apokinetally, 1 left and 1 right marginal row, and neither transverse nor caudal cirri. The opisthe's oral apparatus and frontoventral ciliature and the proter's ventral row originate and develop without participation of parental cirri. The new species, C. arenicola, measures about 400 x 22 mum and is the first cephalized, non-marine hypotrich. It shortens and broadens markedly during fission and resorbs some macronuclear nodules. Two species originally considered as belonging to the genera Perisincirra and Hemisincirra are newly combined with Circinella: C. filiformis (Foissner, 1982) nov. comb. (basionym: Perisincirra filiformis) and C. vettersi (Berger & Foissner, 1989) nov. comb. (basionym: Hemisincirra vettersi). An illustrated and morphometric key to the Circinella species is provided. The systematic position of Circinella and the adaptive value of the cephalization are discussed. 23 species of ciliates, most of which are new for the fauna of North America, occurred together with C. arenicola and are listed in the ecology section.