Paospora carinifang n. gen., n. sp. (Microsporidia: Spragueidae), a parasite of the ridgetail white prawn, Palaemon carinicauda

被引:1
作者
Wang, Yuan [1 ]
Na, Ying [1 ]
Huang, Yan-qing [1 ]
Zhou, Jun-fang [1 ]
Li, Shou-hu [1 ]
Liu, Quan-lin [1 ]
Li, Le-tian [1 ]
Chen, Yuan-ge [1 ]
Tian, Wei [1 ]
Chi, Hai [1 ]
Li, Xin-cang [1 ]
Fang, Wen-hong [1 ]
机构
[1] China Acad Fishery Sci, East China Sea Fisheries Res Inst, Shanghai 200090, Peoples R China
关键词
Microsporidia; Crustacean; Muscle infection; Sporophorous vacuole; Octospore; Molecular phylogeny; CHERAX-DESTRUCTOR DECAPODA; FRESH-WATER CRAYFISH; SP-NOV MICROSPORA; DNA-SEQUENCE; THELOHANIIDAE; PHYLOGENY; MORPHOLOGY; ULTRASTRUCTURE; BURENELLIDAE; MUSCULATURE;
D O I
10.1016/j.jip.2024.108180
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
A new microsporidian disease of the pond-reared ridgetail white prawn, Palaemon carinicauda, , was found in China. Light microscopy, pathology, and scanning electron microscopy showed that the parasite infected the host's skeletal muscle tissue and formed spherical sporophorous vesicles (SPOVs). Electron microscopy revealed that its merogonic life stages developed in direct contact with the host cytoplasm. The sporogonic life stages underwent octosporoblastic sporogony with the formation of eight uninucleate spores in each SPOV. Fresh SPOVs were 5.4 +/- 0.55 mu m in diameter. The octospores were oval and measured 2.3 x 1.5 mu m (fresh) and 1.96 x 1.17 mu m (fixed). The isofilar polar filament was coiled with 9-10 turns and arranged in two rows. Phylogenetic analysis based on the SSU rRNA gene suggests that this microsporidium has close affinities with members of the genera Potaspora and Apotaspora, , but represents an independent generic taxon. We therefore propose the establishment of a new genus and species ( Paospora carinifang n. gen., n. sp.) within the family Spragueidae. We also propose a taxonomic revision to transfer Potaspora macrobrachium to this new genus and reclassify it as Paospora macrobrachium comb. nov.
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页数:13
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