Year 2019, Volume 2 , Issue 4, Pages 182 - 190 2019-10-01

PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES

Thangapalam Jawahar Abraham [1] , Meshram Supradhnya Namdeo [2] , Harresh Adikesavalu [3] , Sayani Banerjee [4]


Streptococcosis is one of the most important bacterial diseases of tilapia. The present study assessed the histopathological changes induced by Streptococcus agalactiae challenge in the brain, kidney, spleen, and liver of Oreochromis mossambicus. When challenged intraperitoneally at 107-108 cells/fish, S. agalactiae strains (TKT1 and TBT2) caused 40-100% mortalities in O. mossambicus. The LD50 values of S. agalactiae TKT1 and TBT2 strains were 1.60×107 and 7.33×107 cells/fish, respectively. Histological sections of the challenged O. mossambicus brain exhibited meningoencephalitis, marginated haemocytes, extensive haemorrhages, oedema and neurons with marginated nuclei. The kidney of challenged tilapia showed glomerulopathy, dilation of Bowman’s capsule, nephritis, haematopoietic tissue necrosis, melanization and granulomatous-like lesions. The spleen was characterized by extensive melanomacrophage aggregation, necrosis and vasodilation. The liver had dilated and ruptured blood capillary, melanization and disintegrated tissue. The intrahepatic exocrine pancreatic tissue was disintegrated. Our results demonstrated that S. agalactiae caused a systemic infection and meningoencephalitis in the Mozambique tilapia juveniles.

Oreochromis mossambicus, Streptococcus agalactiae, Meningoencephalitis, Pathogenicity, Granulomatous-like lesions
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Primary Language en
Subjects Marine and Freshwater Biology
Journal Section Research Articles
Authors

Orcid: 0000-0003-0581-1307
Author: Thangapalam Jawahar Abraham (Primary Author)
Institution: West Bengal University of Animal and Fishery Sciences, Kolkata, India
Country: India


Orcid: 0000-0002-6046-9703
Author: Meshram Supradhnya Namdeo
Institution: West Bengal University of Animal and Fishery Sciences, Kolkata
Country: India


Orcid: 0000-0002-2258-1470
Author: Harresh Adikesavalu
Institution: West Bengal University of Animal and Fishery Sciences, Kolkata
Country: India


Orcid: 0000-0001-6527-4481
Author: Sayani Banerjee
Institution: West Bengal University of Animal and Fishery Sciences, Kolkata
Country: India


Supporting Institution ICAR, New Delhi
Project Number Grant F. 10(12)/2012–EPD dated 23.03.2012
Thanks The authors thank the Vice-Chancellor, West Bengal University of Animal and Fishery Sciences, Kolkata, India for providing necessary infrastructure facility to carry out the work.
Dates

Publication Date : October 1, 2019

Bibtex @research article { aquatres602015, journal = {Aquatic Research}, issn = {}, eissn = {2618-6365}, address = {Esnaf Mah. Pembe Köşk Sok. Kentplus Kadıköy Sitesi B Blok D435 Kadıköy-İstanbul}, publisher = {ScientificWebJournals}, year = {2019}, volume = {2}, pages = {182 - 190}, doi = {10.3153/AR19017}, title = {PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES}, key = {cite}, author = {Abraham, Thangapalam Jawahar and Namdeo, Meshram Supradhnya and Adikesavalu, Harresh and Banerjee, Sayani} }
APA Abraham, T , Namdeo, M , Adikesavalu, H , Banerjee, S . (2019). PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES. Aquatic Research , 2 (4) , 182-190 . DOI: 10.3153/AR19017
MLA Abraham, T , Namdeo, M , Adikesavalu, H , Banerjee, S . "PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES". Aquatic Research 2 (2019 ): 182-190 <http://aquatres.scientificwebjournals.com/en/issue/47451/602015>
Chicago Abraham, T , Namdeo, M , Adikesavalu, H , Banerjee, S . "PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES". Aquatic Research 2 (2019 ): 182-190
RIS TY - JOUR T1 - PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES AU - Thangapalam Jawahar Abraham , Meshram Supradhnya Namdeo , Harresh Adikesavalu , Sayani Banerjee Y1 - 2019 PY - 2019 N1 - doi: 10.3153/AR19017 DO - 10.3153/AR19017 T2 - Aquatic Research JF - Journal JO - JOR SP - 182 EP - 190 VL - 2 IS - 4 SN - -2618-6365 M3 - doi: 10.3153/AR19017 UR - https://doi.org/10.3153/AR19017 Y2 - 2019 ER -
EndNote %0 Aquatic Research PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES %A Thangapalam Jawahar Abraham , Meshram Supradhnya Namdeo , Harresh Adikesavalu , Sayani Banerjee %T PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES %D 2019 %J Aquatic Research %P -2618-6365 %V 2 %N 4 %R doi: 10.3153/AR19017 %U 10.3153/AR19017
ISNAD Abraham, Thangapalam Jawahar , Namdeo, Meshram Supradhnya , Adikesavalu, Harresh , Banerjee, Sayani . "PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES". Aquatic Research 2 / 4 (October 2019): 182-190 . https://doi.org/10.3153/AR19017
AMA Abraham T , Namdeo M , Adikesavalu H , Banerjee S . PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES. Aquat Res. 2019; 2(4): 182-190.
Vancouver Abraham T , Namdeo M , Adikesavalu H , Banerjee S . PATHOGENICITY AND PATHOLOGY OF Streptococcus agalactiae IN CHALLENGED MOZAMBIQUE TILAPIA Oreochromis mossambicus (PETERS 1852) JUVENILES. Aquatic Research. 2019; 2(4): 190-182.