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Morphological and molecular characterization of actinosporeans infecting oligochaete Branchiura sowerbyi from Chinese carp ponds

文献类型: 外文期刊

作者: Xi, Bing-Wen 1 ; Zhou, Zhi-Gang 2 ; Xie, Jun 1 ; Pan, Liang-Kun 1 ; Yang, Ya-Lin 2 ; Ge, Xian-Ping 1 ;

作者机构: 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resource, Minist Agr, Wuxi 214081, Peoples R China

2.Chinese Acad Agr Sci, Feed Res Inst, Key Lab Feed Biotechnol, Minist Agr, Beijing 100081, Peoples R China

关键词: Myxozoa;Actinospore;Myxobolus;Thelohanellus

期刊名称:DISEASES OF AQUATIC ORGANISMS ( 影响因子:1.802; 五年影响因子:2.148 )

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收录情况: SCI

摘要: We surveyed the actinosporean stages of fish myxosporeans at fish farms in Jiangsu Province, China, from 2011 to 2014. During the surveys, we identified 7 actinosporean types from 4 collective groups: echinactinomyxon (1 type), triactinomyxon (1 type), aurantiactinomyxon (1 type), and neoactinomyxum (4 types), released by the oligochaete Branchiura sowerbyi. The morphological characteristics and DNA sequences of these types are described here. Based on 18S rDNA sequence analysis, the actinosporean of echinactinomyxon type CZ with 4 branches at the end of the caudal processes was identified as Myxobolus wulii, and the neoactinomyxum type JD was identified as Thelohanellus wangi Yuan, Xi, Wang, Xie, Zhang, 2015 (JX458816), a recently nominated species from the gills of allogynogenetic gibel carp Carassius auratus gibelio. In addition, actinosporeans of aurantiactinomyxon type JD, neoactinomyxum type CZ-1, neoactinomyxum type CZ-2, and neoactinomyxum type CZ-3 showed high genetic similarity to T. wuhanensis (96.3-96.5%), T. nikolskii (98.0-99.1%), T. wuhanensis (97.8-98.9%), and T. hovorkai (98.7-98.9%), respectively. Phylogenetic analyses showed that these actinosporeans were robustly clustered in the Thelohanellus spp. clade.

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