Diseases of Aquatic Organisms | |
Revision of Myxobolus heterosporus Baker, 1963 (syn. Myxosoma heterospora) (Myxozoa: Myxosporea) in African records | |
A. El-Mansy1 | |
关键词: Myxosporea; Revision; Myxobolus heterosporus; Heteromorphism; Plasmodium; Cornea; Oreochromis aureus; O. niloticus; Tilapia zillii; River Nile; | |
DOI : 10.3354/dao063205 | |
学科分类:生物科学(综合) | |
来源: Inter-Research | |
【 摘 要 】
ABSTRACT: There is uncertainty regarding the validity of Myxobolus heterosporus Baker, 1963. The present study revises the taxonomy, using specimens isolated from plasmodia situated in the infected cornea of Oreochromis aureus, O. niloticusor Tilapia zillii inhabiting the River Nile, Egypt. In addition, histological effects of the parasite on the infected tissue were examined. The spores of M. heterosporus had a variety of shapes expressing remarkable heteromorphism. Fivemain Myxobolus-like spore types and tailed-spores were found. All forms were photographed, measured, sketched and described. Light and electron microscopy supported that spores of a Myxobolus-like morphology co-existed with so-calledtailed-spores in one plasmodium. Some transitional stages from Myxobolus-like spore types to tailed-spores were observed. Therefore, some tailed-spores may be simply heteromorphs of Myxobolus.
【 授权许可】
Unknown
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Files | Size | Format | View |
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RO201911300611973ZK.pdf | 770KB | download |