摘要
依据壳体形态对台湾海峡南部 0～ 4 0m水层的 4 0种砂壳纤毛虫进行了观察 ,发现其中有 3新种 ,即倪氏表纹虫EpirhabdonellanieiXu ,HongetSong ,sp .nov .,网状条纹虫RhabdonellareticulataXu ,HongetSong ,sp .nov .和钝条纹虫RhabdonellaobtusaXu ,HongetSong ,sp .nov .及 17个中国新纪录种 ,同时确定新村网纹虫FavellashintsuensisNieetCheng ,194 7为一同物异名。
This paper is the first report on the Tintinnine ciliates found in the Taiwan Strait. 23 Tintinnine ciliates are described according to the morphology of lorica. Of which three species are new to science: Epirhabdonella niei sp. nov., Rhabdonella reticulata sp. nov. and Rhabdonella obtusa sp. nov. Seventeen species are first records to China: Epiplocylis ralumensis, Craterella retusa, Rhabdonella cornucopia, Rhabdonella poculum, Climatocylis scalaroides, Dictyocysta reticulata, Dadayiella acutiformis, Undella ostenfeldi, U.turgida, Proplectella perpusilla, P.claparèdei, Amphorella amphora, A.qudrilineata, Parundella aculeate, Salpingella minutissima, Eutintinnus apertus, Eutintinnus stramentus. Based on the present studies, Favella shintsuensis Nie et Cheng, 1947 has been synonymised with Favella azorica(Cleve, 1900) Joergensen, 1924. Type specimens are deposited in Lugol′s Fixation in the Laboratory of Protozoology, Ocean University of Qingdao, China.1 Epirhabdonella niei Xu, Hong et Song, sp. nov. (Fig.13)\; Syn.:Protorhabdonella simplex sensu Nie et Cheng, 1947\; Diagnosis.Lorica conical, composed of a short annulated collar (circumoral crest) and a bowl; oral margin rounded, entire; circumoral crest very low, slightly contracting, with 2-3 annular rings; bowl widest at anterior 1/3 of total length and conical posteriorly; wall hyaline, with 5-6 uniformly subvertical ribs, running from nuchal shoulder to aboral end. Total length 58-61*!μm, width ca. 38\|41*!μm, oral diameter ca. 35\|37*!μm. Distribution. Specimens collected from the surface waters in the south of the Taiwan Strait and also distributed in the coastal waters of Hainan Province, China; rare. Remarks. The new species can be distinguished from the closely related species Epirhabdonella mucronata Kofoid et Campbell, 1939 by 2 to 3 annular rings of circumoral crest (vs. no annular ring). The morphology of the new species corresponds with the organism described by Nie and Cheng (1947), which was incorrectly assigned to Protorhabdonella simplex (Cleve, 1900). According to Kofoid et Campbell, (1939), Epirhabdonella differs from Protorhabdonella in addition of oral crest to circumoral region, which was present in Nie et Cheng′s population. The difference between Nie et Cheng′s and our populations only lies in the high number of subvertical ribs in the former (10 vs. 5\|6). The authors regard this as interspecies variation. The new species is therefore named in honor of the distinguished Chinese protozoologist, Dr. Nie Dashu.2 Rhabdonella reticulata Xu, Hong et Song, sp. nov. (Figs.6a, b) Syn.:Rhabdonella cornucopia sensu Souto, 1981 Diagnosis.Lorica distinctly conical vase-shaped, consisting of a bowl and an aboral horn; bowl hyaline with faint prismatic structure and striae, and expanding slightly at anterior 1/4 length of lorica, while rapidly to an aboral point in the posterior region; length of bowl about 85-100*!μm; oral rim 4-5*!μm higher than lip; ribs very faint with more than 10 in number, terminated at the joint of bowl and horn; fenestrae distinct, dense and open; aboral horn ahyaline, length of horn ca. 30-40*!μm. Total length 125-136*!μm, oral rim 45-53*!μm. Distribution. Commonly distributed at 0-30*!m depth waters in the south of the Taiwan Strait. Remarks. The morphology of the new species corresponds well with that of a population described by Souto (1981), however Souto confused this species with Rhabdonella cornucopia Kofoid et Campbell, 1929. This new species differs from the latter in the presence of distinct fenestrae, which is absent in Rhabdonella cornucopia.3 Rhabdonella obtusa Xu, Hong et Song, sp. nov. (Figs.18a, b) Diagnosis. Lorica conical cup-shaped, consisting of a bowl and an aboral horn; bowl hyaline with faint striae, and nearly equal in width at anterior 1/2 length of lorica, while gradually sharpening to an aboral point in the posterior region; oral rim 3-5*!μm higher than lip; ribs very faint and densely arranged, terminated at the joint of bowl an
出处
《动物分类学报》
CSCD
北大核心
2001年第4期454-466,共13页
Acta Zootaxonomica Sinica
基金
国家自然科学重点基金课题 (编号 4 963 62 2 0 )
国家自然科学基金课题 (编号 4 97763 0 8)资助
关键词
纤毛动物门
砂纤亚目
新种
台湾海峡
Ciliophora,Tintinnina,new species,the Taiwan Strait.
