Myxosporean and microsporidian infections in cultured Pacific bluefin tuna Thunnus orientalis in Japan
文献类型：期刊论文
| 作者 | Zhang, Jinyong2; Meng, Fei1; Yokoyama, Hiroshi1; Miyahara, Jiro3; Takami, Ikuo3; Ogawa, Kazuo1 |
| 刊名 | FISHERIES SCIENCE
 |
| 出版日期 | 2010-11-01 |
| 卷号 | 76期号:6页码:981-990 |
| 关键词 | Kudoa shiomitsui Kudoa yasunagai Microsporidium Pacific bluefin tuna Thunnus orientalis Myxosporean Microsporidian |
| ISSN号 | 0919-9268 |
| 通讯作者 | Yokoyama, H, Univ Tokyo, Grad Sch Agr & Life Sci, Dept Aquat Biosci, Bunkyo Ku, Tokyo 1138657, Japan ; ayokoh@mail.ecc.u-tokyo.ac.jp |
| 中文摘要 | During the parasitological survey of cultured juvenile Pacific bluefin tuna (PBT) Thunnus orientalis in 2007 and 2008, two myxosporeans and one microsporidian were found. Morphological and molecular analysis showed that the heart-infecting and brain-infecting myxosporeans are identified as Kudoa shiomitsui and K. yasunagai, respectively. This is a new host record for both species. High prevalence of infection (77-100%) with K. shiomitsui was observed in October to December (1-2 months post-transfer to sea cages), whereas only a few fish were infected with K. yasunagai. A microsporidian observed as white "cysts" in the trunk muscle of PBT had a resemblance to Microsporidium seriolae, the causative parasite of beko disease in yellowtail. Phylogenetic analysis showed that the microsporidian from PBT is closely related to but distinct from several other muscle-infecting species such as M. seriolae, Microsporidium sp. RSB, and Microsporidium sp. SH. Additionally, the spore dimension (2.7 x 1.5 mu m on average) was remarkably smaller than the others. These results suggest that the present microsporidian is an undescribed species and designated Microsporidium sp. PBT. Prevalence and intensity of infection with Microsporidium sp. PBT reached a maximum of 100% and 20 cysts/fish, respectively. Although pathogenic effects of the two Kudoa species on fish health remain unknown, the microsporidian could be of concern to PBT aquaculture due to unsightly cysts in the musculature, reducing the market value of the fish. |
| 英文摘要 | During the parasitological survey of cultured juvenile Pacific bluefin tuna (PBT) Thunnus orientalis in 2007 and 2008, two myxosporeans and one microsporidian were found. Morphological and molecular analysis showed that the heart-infecting and brain-infecting myxosporeans are identified as Kudoa shiomitsui and K. yasunagai, respectively. This is a new host record for both species. High prevalence of infection (77-100%) with K. shiomitsui was observed in October to December (1-2 months post-transfer to sea cages), whereas only a few fish were infected with K. yasunagai. A microsporidian observed as white "cysts" in the trunk muscle of PBT had a resemblance to Microsporidium seriolae, the causative parasite of beko disease in yellowtail. Phylogenetic analysis showed that the microsporidian from PBT is closely related to but distinct from several other muscle-infecting species such as M. seriolae, Microsporidium sp. RSB, and Microsporidium sp. SH. Additionally, the spore dimension (2.7 x 1.5 mu m on average) was remarkably smaller than the others. These results suggest that the present microsporidian is an undescribed species and designated Microsporidium sp. PBT. Prevalence and intensity of infection with Microsporidium sp. PBT reached a maximum of 100% and 20 cysts/fish, respectively. Although pathogenic effects of the two Kudoa species on fish health remain unknown, the microsporidian could be of concern to PBT aquaculture due to unsightly cysts in the musculature, reducing the market value of the fish. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Fisheries |
| 类目[WOS] | Fisheries |
| 研究领域[WOS] | Fisheries |
| 关键词[WOS] | MACCOYII CASTELNAU ; RIBOSOMAL DNA ; BEKO-DISEASE ; BLOOD FLUKE ; RED-SEA ; N. SP ; KUDOA ; MULTIVALVULIDA ; YELLOWTAIL ; SCHLEGEL |
| 收录类别 | SCI |
| 资助信息 | JSPS [19-07796] |
| 语种 | 英语 |
| WOS记录号 | WOS:000286490900010 |
| 公开日期 | 2011-04-14 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/15492]  |
| 专题 | 水生生物研究所_鱼类生物学及渔业生物技术研究中心_期刊论文 |
| 作者单位 | 1.Univ Tokyo, Grad Sch Agr & Life Sci, Dept Aquat Biosci, Bunkyo Ku, Tokyo 1138657, Japan 2.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China 3.Nagasaki Prefectural Inst Fisheries, Nagasaki 8512213, Japan |
| 推荐引用方式 GB/T 7714 | Zhang, Jinyong,Meng, Fei,Yokoyama, Hiroshi,et al. Myxosporean and microsporidian infections in cultured Pacific bluefin tuna Thunnus orientalis in Japan[J]. FISHERIES SCIENCE,2010,76(6):981-990. |
| APA | Zhang, Jinyong,Meng, Fei,Yokoyama, Hiroshi,Miyahara, Jiro,Takami, Ikuo,&Ogawa, Kazuo.(2010).Myxosporean and microsporidian infections in cultured Pacific bluefin tuna Thunnus orientalis in Japan.FISHERIES SCIENCE,76(6),981-990. |
| MLA | Zhang, Jinyong,et al."Myxosporean and microsporidian infections in cultured Pacific bluefin tuna Thunnus orientalis in Japan".FISHERIES SCIENCE 76.6(2010):981-990. |
入库方式： OAI收割
来源：水生生物研究所
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