作　　者： ; ; (华鼎可）;

机构地区： 中国科学院南海海洋研究所

出　　处： 《热带海洋》 1993年第4期79-87,共9页

摘　　要： 在南海鱼类胆囊中发现寄生粘孢子虫(Myxosporidia)角形虫属Ceratomyxa五新种。其中的肾形角形虫C.reniforma和石斑角形虫C.epinephela寄生于赤点石斑鱼Epinephelus akaara,桂山角形虫C.guishanensis寄生于青石斑鱼E.awoara,陈氏角形虫C.cheni寄生于黄鳍鲷Sparus lalus,(鱼祭)角形虫C.clupanoda寄生于斑(鱼祭)Clupanodon punctatus。 Since 1987, we have investigated the parasitic myxospora of the fish from South China Sea, and five new species of Ceratomyxa are found from Epinephelus akaara, E. awoara 籗pams latus and Clupanodon punctatus, respectively. The specimens are deposited in South China Sea Institute of Oceanology, Academia Sinica, Guangzhou. The diagnosis of the new species are briefly as follows:1. Ceratomyxa reniforma sp. nov. (fig. 1) Host Epinephelus akaara (Tern, et Sch. ). Habitat Gall bladder.Location of the host Daya Bay, Shenzhen.Vegetative form Trophozoite nearly rounded. Ectoplasm transparent. Endo-plasm fine granular. Younger sporont rounded,developed sporont elliptical. Each sporont produces two spores.Spore Mature spore reniform in sutural view. Shell valve curved backward less. The terminal of shell valve blunt. Two shell valves are similar in size and form. Sutural ridge slender distinct. Polar capsules rounded and equal-sized. The space of spore is full of sporoplasm in most cases. Dimension:sutural breadth of spore 22. 4(19. 0.7- 0)μm, sutural diameter 5- 9 (5. 0-70. 0)μm, diameter of polar capsules 2. 8 (2. 5-3. 0) μm.This new species closely resembles Ceratomyxa spari Awerinzew and C. platichthys (Fujita) , but the size of this new species is much smaller than that of two latter species, which are from different hosts.2. Ceratomyxa epinephela sp. nov. (fig. 2) Host Epinephelus akaara (Tern, et Sch. ). Habitat Gall bladder.Location of the host Daya Bay, Shenzhen.Vegetative form Younger trophozoit rounded. Ectoplasm transparent, endo-plasm granular. After growth, multiplication by binary fission occurs. In the early stage of sporogony, four polar capsules form in the center of sporont. Subsequently, polar cap- sules occur at the next cell membrane, sporont elongated. In later stage of sporogony, each sporont produces two spores, which are enveloped by cell membrane.Spore Anterior end of mature spore is in the shape of a smooth arch, not forming cone progress. Shell valve is longer. The terminal of shell valve i

关 键 词： 南海 鱼类 粘孢子虫 角形虫 新种

领　　域： [生物学]