The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus
This study describes the susceptibility of different fish gender following acute Streptococcus agalactiae infection by using Javanese medaka Oryzias javanicus as test fish. The fish were grouped into four groups, which were: (1) all-male; (2) all-female; (3) mixed-gender (1 male: 1 female ratio); an...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/54532/ http://psasir.upm.edu.my/id/eprint/54532/1/The%20effects%20of%20fish%20gender%20on%20susceptibility%20to%20acute%20Streptococcus%20agalactiae%20infection%20in%20Javanese%20medaka%20Oryzias%20javanicus.pdf |
| _version_ | 1848852571289026560 |
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| author | Azmai, Mohammad Noor Amal S. T., Zarif M. S., Suhaiba Mohd Roseli, Mohd Fauzul Aidil Nasruddin, Nurrul Shaqinah Saad, Mohd Zamri Ismail, Ahmad |
| author_facet | Azmai, Mohammad Noor Amal S. T., Zarif M. S., Suhaiba Mohd Roseli, Mohd Fauzul Aidil Nasruddin, Nurrul Shaqinah Saad, Mohd Zamri Ismail, Ahmad |
| author_sort | Azmai, Mohammad Noor Amal |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | This study describes the susceptibility of different fish gender following acute Streptococcus agalactiae infection by using Javanese medaka Oryzias javanicus as test fish. The fish were grouped into four groups, which were: (1) all-male; (2) all-female; (3) mixed-gender (1 male: 1 female ratio); and (4) control non-infected (1 male: 1 female ratio). The fish in group 1, 2 and 3 were intraperitoneally exposed to 5.4 × 108 CFU/mL of S. agalactiae, while for group 4, the fish were exposed using sterile broth. The main clinical signs and histopathological changes of infected Javanese medaka were commonly observed in S. agalactiae infected fishes. However, no difference on clinical signs and histopathological changes of fish in group 1, 2 and 3 were noticed. The Javanese medaka mortality in group 1, 2 and 3 were observed from 4 h post infection (hpi) to 6 hpi, with the cumulative mortality from 3% to 30%. Then, the mortality increased at 12 hpi, with the range from 53% to 80%. However, 100% of the infected fish dead at 24 hpi. No clinical sign, histopathological change and fish mortality recorded in group 4. Generally, the clinical signs, mortality patterns, cumulative mortality and histopathological changes of Javanese medaka infected by S. agalactiae did not show any difference between the all-male, all-female and mixed-gender groups. This indicates that the susceptibility of fish to S. agalactiae infection is not influenced by their gender. |
| first_indexed | 2025-11-15T10:40:12Z |
| format | Article |
| id | upm-54532 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:40:12Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-545322020-03-09T02:46:28Z http://psasir.upm.edu.my/id/eprint/54532/ The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus Azmai, Mohammad Noor Amal S. T., Zarif M. S., Suhaiba Mohd Roseli, Mohd Fauzul Aidil Nasruddin, Nurrul Shaqinah Saad, Mohd Zamri Ismail, Ahmad This study describes the susceptibility of different fish gender following acute Streptococcus agalactiae infection by using Javanese medaka Oryzias javanicus as test fish. The fish were grouped into four groups, which were: (1) all-male; (2) all-female; (3) mixed-gender (1 male: 1 female ratio); and (4) control non-infected (1 male: 1 female ratio). The fish in group 1, 2 and 3 were intraperitoneally exposed to 5.4 × 108 CFU/mL of S. agalactiae, while for group 4, the fish were exposed using sterile broth. The main clinical signs and histopathological changes of infected Javanese medaka were commonly observed in S. agalactiae infected fishes. However, no difference on clinical signs and histopathological changes of fish in group 1, 2 and 3 were noticed. The Javanese medaka mortality in group 1, 2 and 3 were observed from 4 h post infection (hpi) to 6 hpi, with the cumulative mortality from 3% to 30%. Then, the mortality increased at 12 hpi, with the range from 53% to 80%. However, 100% of the infected fish dead at 24 hpi. No clinical sign, histopathological change and fish mortality recorded in group 4. Generally, the clinical signs, mortality patterns, cumulative mortality and histopathological changes of Javanese medaka infected by S. agalactiae did not show any difference between the all-male, all-female and mixed-gender groups. This indicates that the susceptibility of fish to S. agalactiae infection is not influenced by their gender. Elsevier 2018-01 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/54532/1/The%20effects%20of%20fish%20gender%20on%20susceptibility%20to%20acute%20Streptococcus%20agalactiae%20infection%20in%20Javanese%20medaka%20Oryzias%20javanicus.pdf Azmai, Mohammad Noor Amal and S. T., Zarif and M. S., Suhaiba and Mohd Roseli, Mohd Fauzul Aidil and Nasruddin, Nurrul Shaqinah and Saad, Mohd Zamri and Ismail, Ahmad (2018) The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus. Microbial Pathogenesis, 114. pp. 251-254. ISSN 0882-4010; ESSN: 1096-1208 https://www.sciencedirect.com/science/article/pii/S0882401016308749?via%3Dihub 10.1016/j.micpath.2017.11.069 |
| spellingShingle | Azmai, Mohammad Noor Amal S. T., Zarif M. S., Suhaiba Mohd Roseli, Mohd Fauzul Aidil Nasruddin, Nurrul Shaqinah Saad, Mohd Zamri Ismail, Ahmad The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus |
| title | The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus |
| title_full | The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus |
| title_fullStr | The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus |
| title_full_unstemmed | The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus |
| title_short | The effects of fish gender on susceptibility to acute Streptococcus agalactiae infection in Javanese medaka Oryzias javanicus |
| title_sort | effects of fish gender on susceptibility to acute streptococcus agalactiae infection in javanese medaka oryzias javanicus |
| url | http://psasir.upm.edu.my/id/eprint/54532/ http://psasir.upm.edu.my/id/eprint/54532/ http://psasir.upm.edu.my/id/eprint/54532/ http://psasir.upm.edu.my/id/eprint/54532/1/The%20effects%20of%20fish%20gender%20on%20susceptibility%20to%20acute%20Streptococcus%20agalactiae%20infection%20in%20Javanese%20medaka%20Oryzias%20javanicus.pdf |