Morphological and molecular characterization of a novel myxosporean parasite Myxobolus bejeranoi n. sp. (Cnidaria: Myxosporea) from hybrid tilapia in Israel

被引：0
作者：
Alena Lövy
Margarita Smirnov
Vera Brekhman
Tamir Ofek
Tamar Lotan
机构：
[1] University of Haifa,Marine Biology Department, The Leon H. Charney School of Marine Sciences
[2] Biology Centre of the Czech Academy of Sciences,Institute of Parasitology
[3] Ministry of Agriculture and Rural Development,Central Fish Health Laboratory, Department of Fisheries and Aquaculture
来源：
Parasitology Research | 2018年 / 117卷
关键词：
Myxosporea; Myxobolus; Pathogenic parasite; Tilapia; hybrid; Israel aquaculture;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Myxosporean infections can cause severe damage to commercially grown tilapia. Here, we report a novel myxosporean that was found in gills of Oreochromis aureus male × Oreochromis niloticus female, which is an important aquaculture tilapia hybrid in Israel. Three-month-old fish were found to have cysts located in gill muscle tissue, which were filled with both immature and mature spores. Affected fish displayed higher mortality rate. Spore dimensions (10.8 ± 0.7 μm length × 6.8 ± 0.6 μm width) and molecular characterization using 18S ribosomal DNA revealed that the unknown parasite belongs in the Myxobolus clade. Based on the infection site, spore morphology and molecular characterization, we describe this parasite as Myxobolus bejeranoi n. sp. (MF401455). Phylogenetic analysis showed that the new species is most closely related to two Myxobolus spp. from O. niloticus in Egypt and Ghana.
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页码：491 / 499
页数：8
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