Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia)
Background: Catfish farming is often practiced with high stocking densities, which can result in environmental degradation, leading to stress and rendering the fish more vulnerable to infections such as Edwardsiellosis caused by E. tarda. Infection by E. tarda can occur through horizontal transmiss...
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| Format: | Article |
| Language: | English |
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Tripoli University
2025-04-01
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| Series: | Open Veterinary Journal |
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| Online Access: | http://www.ejmanager.com/fulltextpdf.php?mno=233029 |
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| author | Dwi Kurniawati Evi Fitriana Wahju Tjahjaningsih Mohammad Faizal Ulkhaq Maria Agustina Pardede Jiun-Yan Loh |
| author_facet | Dwi Kurniawati Evi Fitriana Wahju Tjahjaningsih Mohammad Faizal Ulkhaq Maria Agustina Pardede Jiun-Yan Loh |
| author_sort | Dwi Kurniawati |
| collection | DOAJ |
| description | Background:
Catfish farming is often practiced with high stocking densities, which can result in environmental degradation, leading to stress and rendering the fish more vulnerable to infections such as Edwardsiellosis caused by E. tarda. Infection by E. tarda can occur through horizontal transmission during cohabitation of infected and healthy fish.
Aim:
This study aimed to investigate the hematological profile and the abundance of E. tarda in catfish following cohabitation with carrier silver rasbora.
Methods:
A total of 160 silver rasboras (length: 6.02±0.36 cm, weight: 2.065±0.565 g) were immersed in an E. tarda suspension at a concentration of 1013 CFU/ml for two weeks. Subsequently, they were cohabitated with 240 catfish (length: 6.9±2.35 cm, weight: 2.78±1.37 g) at different density ratios: 1:1 (P1), 1:2 (P2), 2:1 (P3), along with a negative control (without E. tarda, NC), and with E. tarda at 1013 CFU/ml (positive control/PC) for 5 days. The observed parameters included hematological profiles (total erythrocytes, leukocytes, hemoglobin levels, and leukocyte differentials) and the density of E. tarda in various catfish organs (liver, kidneys, and spleen).
Results:
The results indicated that catfish cohabiting with E. tarda-infected silver rasbora exhibited significant hematological alterations, including elevated percentages of neutrophils, lymphocytes, and monocytes, alongside decreased erythrocyte counts, hemoglobin levels, and total leukocyte counts. Furthermore, the highest density of E. tarda was detected in the liver (1.15±0.11 ×104 CFU/ml) in comparison to other organs.
Conclusion:
Cohabitation between healthy catfish and E. tarda-carrier silver rasbora resulted in bacterial infection in the catfish. [Open Vet J 2025; 15(4.000): 1654-1662] |
| format | Article |
| id | doaj-art-786c8669bb1341ecadf48d00331a2e40 |
| institution | DOAJ |
| issn | 2226-4485 2218-6050 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Tripoli University |
| record_format | Article |
| series | Open Veterinary Journal |
| spelling | doaj-art-786c8669bb1341ecadf48d00331a2e402025-08-20T03:09:38ZengTripoli UniversityOpen Veterinary Journal2226-44852218-60502025-04-011541654166210.5455/OVJ.2025.v15.i4.17233029Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia)Dwi Kurniawati0Evi Fitriana1Wahju Tjahjaningsih2Mohammad Faizal Ulkhaq3Maria Agustina Pardede4Jiun-Yan Loh5Aquaculture Study Program, Faculty of Health, Medicine and Life Sciences, Universitas Airlangga, 68425, Indonesia. Aquaculture Study Program, Faculty of Health, Medicine and Life Sciences, Universitas Airlangga, 68425, Indonesia. Marine Department, Faculty of Fisheries and Marine, Universitas Airlangga, Indonesia Aquaculture Study Program, Faculty of Health, Medicine and Life Sciences, Universitas Airlangga, Indonesia Aquaculture Study Program, Faculty of Health, Medicine and Life Sciences, Universitas Airlangga, Indonesia Tropical Futures Institute, James Cook University Singapore, SingaporeBackground: Catfish farming is often practiced with high stocking densities, which can result in environmental degradation, leading to stress and rendering the fish more vulnerable to infections such as Edwardsiellosis caused by E. tarda. Infection by E. tarda can occur through horizontal transmission during cohabitation of infected and healthy fish. Aim: This study aimed to investigate the hematological profile and the abundance of E. tarda in catfish following cohabitation with carrier silver rasbora. Methods: A total of 160 silver rasboras (length: 6.02±0.36 cm, weight: 2.065±0.565 g) were immersed in an E. tarda suspension at a concentration of 1013 CFU/ml for two weeks. Subsequently, they were cohabitated with 240 catfish (length: 6.9±2.35 cm, weight: 2.78±1.37 g) at different density ratios: 1:1 (P1), 1:2 (P2), 2:1 (P3), along with a negative control (without E. tarda, NC), and with E. tarda at 1013 CFU/ml (positive control/PC) for 5 days. The observed parameters included hematological profiles (total erythrocytes, leukocytes, hemoglobin levels, and leukocyte differentials) and the density of E. tarda in various catfish organs (liver, kidneys, and spleen). Results: The results indicated that catfish cohabiting with E. tarda-infected silver rasbora exhibited significant hematological alterations, including elevated percentages of neutrophils, lymphocytes, and monocytes, alongside decreased erythrocyte counts, hemoglobin levels, and total leukocyte counts. Furthermore, the highest density of E. tarda was detected in the liver (1.15±0.11 ×104 CFU/ml) in comparison to other organs. Conclusion: Cohabitation between healthy catfish and E. tarda-carrier silver rasbora resulted in bacterial infection in the catfish. [Open Vet J 2025; 15(4.000): 1654-1662]http://www.ejmanager.com/fulltextpdf.php?mno=233029catfishcohabitationedwardsiellosisfisheriessilver rasbora |
| spellingShingle | Dwi Kurniawati Evi Fitriana Wahju Tjahjaningsih Mohammad Faizal Ulkhaq Maria Agustina Pardede Jiun-Yan Loh Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia) Open Veterinary Journal catfish cohabitation edwardsiellosis fisheries silver rasbora |
| title | Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia) |
| title_full | Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia) |
| title_fullStr | Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia) |
| title_full_unstemmed | Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia) |
| title_short | Hematological alterations and bacterial abundance of Edwardsiella tarda in catfish (Clarias Sp.) cohabiting with carrier silver rasbora (Rasbora argyrotaenia) |
| title_sort | hematological alterations and bacterial abundance of edwardsiella tarda in catfish clarias sp cohabiting with carrier silver rasbora rasbora argyrotaenia |
| topic | catfish cohabitation edwardsiellosis fisheries silver rasbora |
| url | http://www.ejmanager.com/fulltextpdf.php?mno=233029 |
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