MORPHOLOGY OF DIPLOMONAD FLAGELLATES - SPIRONUCLEUS-TOROSA N-SP FROM ATLANTIC COD GADUS-MORHUA L, AND HADDOCK MELANOGRAMMUS-AEGLEFINUS (L) AND HEXAMITA-SALMONIS MOORE FROM BROOK TROUT SALVELINUS-FONTINALIS (MITCHILL)
MORPHOLOGY OF DIPLOMONAD FLAGELLATES - SPIRONUCLEUS-TOROSA N-SP FROM ATLANTIC COD GADUS-MORHUA L, AND HADDOCK MELANOGRAMMUS-AEGLEFINUS (L) AND HEXAMITA-SALMONIS MOORE FROM BROOK TROUT SALVELINUS-FONTINALIS (MITCHILL)
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DOI：
10.1111/j.1550-7408.1990.tb01160.x
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发表时间：
1990-09-01
期刊：
影响因子：
--
通讯作者：
MORRISON, CM
中科院分区：
文献类型：
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作者：
POYNTON, SL;MORRISON, CM
鞭毛虫Spironucleus Torosa n.sp.是大西洋鳕鱼Gadus morhua和黑线鳕Melanogrammus aeglefinus的描述。这被认为是第一个被证实的海水鱼螺旋核的报告。在直肠腔内游动的生物呈梨形至细长，长10.5-18.6米，宽3.2-13.3米；其他细长的生物通过顶端延伸与微绒毛连接在直肠上皮上。躯体后端延伸成尾状突起，其两侧各有一个后外侧环状突起或环状突起，中央有一回生鞭毛。一个对称的微管和片层系统，在Protargol浸泡的标本中形成“V”形，支撑围绕圆环、圆环本身和尾部突起的身体法兰。核上型微管横切面呈倒V-U形，细胞气孔周围有电子致密带。淡染小管横切面呈倒V-U形，细胞气孔周围有电子致密带。浅染均一的细胞质通常出现在身体的前部，其余的高度空泡化，有大量的深色颗粒。在游动生物中，粗面内质网(RER)存在于细胞核和细胞孔周围，细胞质中偶尔可见细菌。在“附着”的生物体中，粗面内质网减少，细菌消失。用光镜和扫描电子显微镜观察了方斑石斑鱼的六爪沙门氏菌，其细胞质不是高度空泡化。两个复发的鞭毛紧密地从身体后端钝的地方长出。
A diplomonad flagellate, Spironucleus torosa n. sp. is described from Atlantic Cod Gadus morhua and haddock Melanogrammus aeglefinus. This is believed to be the 1st confirmed report of Spironucleus from a marine fish. Organisms swimming in the rectal lumen were broadly pyriform to elongate, and measured 10.5-18.6 .mu.m long and 3.2-13.3 .mu.m wide; other elongate organisms were attached to the rectal epithelium, via apical extensions appearing continuous with the microvilli. The posterior end of the body was extended into a caudal projection, on either side of which was a posteriolateral ring-shaped protrusion or torus, with a recurrent flagellum emerging from its centre. A symmetrical system of microtubules and lamellae, forming a "V" in protargol impregnated specimens, supported the flanges of the body surrounding the tori, the tori themselves and the caudal projection. Supranuclear microtubules were an inverted V to U shape in transverse section, and an electron dense band accompanied the cytostomes. Lightly staining tubules were an inverted V to U shape in transverse section, and an electron dense band accompanied the cytostomes. Lightly staining homogenous cytoplasm was usually present in the anterior part of the body, the remainder being highly vacuolated with numerous dark granules. In swimming organisms, rough endoplasmic reticulum (RER) was present around the nuclei and cytostomes, and bacteria were occasionally seen in the cytoplasm. In "attached" organisms, RER was reduced, and bacteria were absent. Hexamita salmonis Moore from Salvelinus fontinalis was studied by light and scanning electron microscopy for comparison; its cytoplasm was not highly vacuolated. The two recurrent flagella emerged close together from the blunt posterior end of the body.