The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish
Bighead carp, Aristichthys nobilis (Richardson), fingerlings which had not been previously exposed to nauplii of Lernaea polymorpha were infected and sacrificed at various time intervals up to 21 days. Clinical observations showed that punctate haemorrhages developed following skin penetration at 13...
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| Format: | Article |
| Language: | English |
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Wiley-Blackwell Publishing
1989
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| Online Access: | http://psasir.upm.edu.my/id/eprint/34060/1/a68%20-%20the%20experimental%20histopathology%20of%20lernaea%20polymorpha.pdf |
| _version_ | 1825948379759247360 |
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| author | Shariff, M. Roberts, R. J. |
| author_facet | Shariff, M. Roberts, R. J. |
| author_sort | Shariff, M. |
| collection | UPM |
| description | Bighead carp, Aristichthys nobilis (Richardson), fingerlings which had not been previously exposed to nauplii of Lernaea polymorpha were infected and sacrificed at various time intervals up to 21 days. Clinical observations showed that punctate haemorrhages developed following skin penetration at 13 days post-exposure. The adult female parasite was observed embedded in the skin and histopathology showed that the parasite penetrated the host tissue at an angle, sliding between the overlapping scales. It caused extensive tissue disruption, necrosis and haemorrhage along its path of entry, which was followed by an acute inflammatory response succeeded by a highly vascular chronic granulomatous fibrosis, whereby collagen fibres encapsulated the horns of the parasite. This contrasted with the predominantly haemorrhagic ulcerative lesions examined on immune fish subjected to natural infection, which were extensive but rarely accompanied by penetration through the dermis.
There was a very extensive infiltrate of eosinophilic granular cells, club cells and lymphocytes within the spongiotic epidermis and the extensive haemorrhage was largely subepidermal.
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| first_indexed | 2024-03-06T08:27:56Z |
| format | Article |
| id | upm.eprints-34060 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-12-09T02:16:02Z |
| publishDate | 1989 |
| publisher | Wiley-Blackwell Publishing |
| record_format | dspace |
| spelling | upm.eprints-340602024-10-07T01:33:38Z http://psasir.upm.edu.my/id/eprint/34060/ The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish Shariff, M. Roberts, R. J. Bighead carp, Aristichthys nobilis (Richardson), fingerlings which had not been previously exposed to nauplii of Lernaea polymorpha were infected and sacrificed at various time intervals up to 21 days. Clinical observations showed that punctate haemorrhages developed following skin penetration at 13 days post-exposure. The adult female parasite was observed embedded in the skin and histopathology showed that the parasite penetrated the host tissue at an angle, sliding between the overlapping scales. It caused extensive tissue disruption, necrosis and haemorrhage along its path of entry, which was followed by an acute inflammatory response succeeded by a highly vascular chronic granulomatous fibrosis, whereby collagen fibres encapsulated the horns of the parasite. This contrasted with the predominantly haemorrhagic ulcerative lesions examined on immune fish subjected to natural infection, which were extensive but rarely accompanied by penetration through the dermis. There was a very extensive infiltrate of eosinophilic granular cells, club cells and lymphocytes within the spongiotic epidermis and the extensive haemorrhage was largely subepidermal. Wiley-Blackwell Publishing 1989-09 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/34060/1/a68%20-%20the%20experimental%20histopathology%20of%20lernaea%20polymorpha.pdf Shariff, M. and Roberts, R. J. (1989) The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish. Journal of Fish Diseases, 12 (5). pp. 405-414. ISSN 0140-7775 https://onlinelibrary.wiley.com/doi/10.1111/j.1365-2761.1989.tb00553.x 10.1111/j.1365-2761.1989.tb00553.x |
| spellingShingle | Shariff, M. Roberts, R. J. The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish |
| title | The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish |
| title_full | The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish |
| title_fullStr | The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish |
| title_full_unstemmed | The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish |
| title_short | The experimental histopathology of Lernaea polymorpha Yu, 1938 infection in naive Aristichthys nobilis (Richardson) and a comparison with the lesion in naturally infected clinically resistant fish |
| title_sort | experimental histopathology of lernaea polymorpha yu 1938 infection in naive aristichthys nobilis richardson and a comparison with the lesion in naturally infected clinically resistant fish |
| url | http://psasir.upm.edu.my/id/eprint/34060/1/a68%20-%20the%20experimental%20histopathology%20of%20lernaea%20polymorpha.pdf |
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