Gross and Histopathological Signs of the Spotting Disease in the Sea Urchin <i>Strongylocentrotus intermedius</i>
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- Shimizu Motohiro
- Faculty of Fisheries, Hokkaido University
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- Takaya Yoshiyuki
- Fisheries Science Institute of Hokkaido
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- Ohsaki Syoji
- Fisheries Science Institute of Hokkaido
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- Kawamata Kenji
- Hokkaido Institute of Mariculture
Bibliographic Information
- Other Title
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- Gross and Histopathological Signs of the Spotting Disease in the Sea Urchin Strongylocentrotus intermedius
- Gross and Histopathological Signs of th
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Abstract
Histopathological and scanning electron microscopic observations were performed in the lesional tissues of the test and appendages of the sea urchin Strongylocentrotus intermedius affected by “spotting disease.” Spotting lesions with blackish red color on the test surface, separation of spines and attachment failure of tube feet are typical external signs. The epidermal lesions of the test and appendages is disorganized and infiltrated by migrating coelomic red spherule cells (eleocytes) and brown granules. Muscle fibers in the spine base, tube feet and ampullae are fragmented. These pathological signs are very similar to those of the bald-sea-urchin disease in S. purpuratus and S. droebachiensis. Invasions of the ameba Paramoeba invadens that was identified as a pathogen of thebald-sea-urchin disease, were not found in the diseased S. intermedius. However, seriously damaged epidermis, dermis and connective tissue were invaded by bacteria, one of which was a filiform bacillus. The results suggest that the spotting disease of S. intermedius would associate with a bacterial infection.
Journal
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- Fisheries science
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Fisheries science 61 (4), 608-613, 1995
The Japanese Society of Fisheries Science
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Details 詳細情報について
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- CRID
- 1390001204430075008
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- NII Article ID
- 130003902753
- 10004862809
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- NII Book ID
- AA10993718
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- NDL BIB ID
- 3644453
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- ISSN
- 09199268
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed