Kabataia gen. n., a new genus proposed for Microsporidium spp. infecting trunk muscles of fishes

Diseases of Aquatic Organisms

Iva Dyková¹  Jiri Lom¹  Kamonporn Tonguthai¹ 

关键词: Microsporidia;    Kabataia gen.n.;    Ultrastructure;    Pangasius sutchi;   

DOI  :  10.3354/dao038039

学科分类：生物科学（综合）

来源: Inter-Research

【 摘 要 】

ABSTRACT: Based on a fine structural study, a new genus, Kabataia gen. n., is proposed for Microsporidium arthuri Lom, Dyková and Shaharom, 1990. It develops in trunk muscles of a South-East Asian freshwater fish, Pangasiussutchi. The genus has nuclei isolated throughout the cycle, merogony stages are multinucleate, sporogony proceeds in 2 steps: multinucleate sporont segments into sporoblast mother cells which produce 2 sporoblasts. Sporoblasts and early spores arecharacterized by a dense globule at the site of the posterior vacuole. Mature spores are of a rather variable shape. Their exospore is raised into small, irregular fields. The polaroplast is relatively small and its posterior part consists of flatvesicles with dense contents. The polar tube makes a small number (4 to 6) of turns. A congeneric species is Kabataia seriolae (Egusa, 1982) comb. nov. from cultured marine yellowtails Seriola quinqueradiata. Kabataiainflicts heavy damage on muscle tissue. The sarcoplasm within which Kabataia develops is reduced to an amorphous mass with tubule-like fibrils, microfibrils and small vesicles.

【 授权许可】

Unknown