Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological Analysis
The lined seahorse (<i>Hippocampus erectus</i>) is an aquacultural species in China and has important economic and ornamental value. However, the species is affected by disease, which restricts their large-scale cultivation. In 2021, a disease was observed in cultured seahorses in Tianji...
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MDPI AG
2023-04-01
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| Series: | Fishes |
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| Online Access: | https://www.mdpi.com/2410-3888/8/5/225 |
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| author | Xiaohui Bai Shuang Hao Jianping Fu Hanchang Sun Zhang Luo |
| author_facet | Xiaohui Bai Shuang Hao Jianping Fu Hanchang Sun Zhang Luo |
| author_sort | Xiaohui Bai |
| collection | DOAJ |
| description | The lined seahorse (<i>Hippocampus erectus</i>) is an aquacultural species in China and has important economic and ornamental value. However, the species is affected by disease, which restricts their large-scale cultivation. In 2021, a disease was observed in cultured seahorses in Tianjin, China, with a cumulative mortality rate of 20%. The symptoms observed in the moribund seahorse included a weak swimming capacity, discolored body surface, enlarged liver and kidneys, and numerous white nodules in the parenchymatous organs. The strains HM-2021-1 and HM-2021-2 were isolated from diseased seahorses and were identified as being responsible for the disease. It demonstrated the potential to infect seahorse, and the cumulative mortalities of the seahorses artificially infected with strains HM-2021-1 and HM-2021-2 were 93.3% and 90.0%. The pathogen was identified as <i>Mycobacterium chelonae</i> based on physiological and biochemical tests, and 16S rDNA, rpoB, and Hsp65 gene sequence analysis. To our knowledge, this study is the first report of <i>M. chelonae</i> associated with diseased seahorses in China. |
| first_indexed | 2024-03-11T03:44:48Z |
| format | Article |
| id | doaj.art-8ad643623f7346c587a7f9d510a55b38 |
| institution | Directory Open Access Journal |
| issn | 2410-3888 |
| language | English |
| last_indexed | 2024-03-11T03:44:48Z |
| publishDate | 2023-04-01 |
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| series | Fishes |
| spelling | doaj.art-8ad643623f7346c587a7f9d510a55b382023-11-18T01:19:29ZengMDPI AGFishes2410-38882023-04-018522510.3390/fishes8050225Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological AnalysisXiaohui Bai0Shuang Hao1Jianping Fu2Hanchang Sun3Zhang Luo4Tianjin Key Lab of Aqua-Ecology and Aquaculture, College of Fisheries, Tianjin Agricultural University, Tianjin 300384, ChinaTianjin Fishery Research Institute, 442 Jiefangnan Road, Tianjin 300221, ChinaCollege of Life Science, Jiangxi Normal University, Nanchang 330022, ChinaCollege of Landscape Architecture and Life Science, Chongqing University of Arts and Sciences, Chongqing 402160, ChinaTianjin Key Lab of Aqua-Ecology and Aquaculture, College of Fisheries, Tianjin Agricultural University, Tianjin 300384, ChinaThe lined seahorse (<i>Hippocampus erectus</i>) is an aquacultural species in China and has important economic and ornamental value. However, the species is affected by disease, which restricts their large-scale cultivation. In 2021, a disease was observed in cultured seahorses in Tianjin, China, with a cumulative mortality rate of 20%. The symptoms observed in the moribund seahorse included a weak swimming capacity, discolored body surface, enlarged liver and kidneys, and numerous white nodules in the parenchymatous organs. The strains HM-2021-1 and HM-2021-2 were isolated from diseased seahorses and were identified as being responsible for the disease. It demonstrated the potential to infect seahorse, and the cumulative mortalities of the seahorses artificially infected with strains HM-2021-1 and HM-2021-2 were 93.3% and 90.0%. The pathogen was identified as <i>Mycobacterium chelonae</i> based on physiological and biochemical tests, and 16S rDNA, rpoB, and Hsp65 gene sequence analysis. To our knowledge, this study is the first report of <i>M. chelonae</i> associated with diseased seahorses in China.https://www.mdpi.com/2410-3888/8/5/225seahorse<i>Hippocampus erectus</i>histopathology<i>Mycobacterium chelonae</i> |
| spellingShingle | Xiaohui Bai Shuang Hao Jianping Fu Hanchang Sun Zhang Luo Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological Analysis Fishes seahorse <i>Hippocampus erectus</i> histopathology <i>Mycobacterium chelonae</i> |
| title | Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological Analysis |
| title_full | Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological Analysis |
| title_fullStr | Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological Analysis |
| title_full_unstemmed | Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological Analysis |
| title_short | Identification of <i>Mycobacterium chelonae</i> from Lined Seahorse <i>Hippocampus erectus</i> and Histopathological Analysis |
| title_sort | identification of i mycobacterium chelonae i from lined seahorse i hippocampus erectus i and histopathological analysis |
| topic | seahorse <i>Hippocampus erectus</i> histopathology <i>Mycobacterium chelonae</i> |
| url | https://www.mdpi.com/2410-3888/8/5/225 |
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