European Journal of Biology

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Research Article


DOI :10.26650/EurJBiol.2018.0012   IUP :10.26650/EurJBiol.2018.0012    Full Text (PDF)

Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.)

Sudeshna Sarker, Thangapalam Jawahar Abraham, Sayani Banerjee, Harresh Adikesavalu

Objective: This study investigated the pathogenicity and pathology of the gill rot-associated bacterium Flavobacterium sp. KG3 in experimentally challenged Carassius auratus. Material and Methods: The pathogenicity of Flavobacterium sp. KG3 was assessed by intraperitoneal injection (i/p) and abrasion-bath treatment followed by histopathology. Results: Flavobacterium sp. KG3 challenge caused extensive damages to the gills and internal organs of C. auratus, resulting in cellular and tissue-level alterations. The i/p challenge resulted in significant mortalities, with an LD₅₀ value of 2.5 × 10⁵ CFU/fish. The abrasion-bath challenge resulted in 60% mortality at 6.0 × 106 cells/mL in 5 days. The kidney of the challenged C. auratus exhibited extensive haaemorrhages, polymorphic and constricted nephritic tubules, fibrosis, glomerulopathy, degeneration of nephritic tubular epithelium, disruption of blood vessels, cellular and nuclear hypertrophy, granuloma formation, necrosis of haaematopoietic area, vacuolation in haaematopoietic tissue, widening of lumen, and thickening of the luminal lining. Conclusion: Like other recognized bacterial pathogens, Flavobacterium sp. KG3 was moderately virulent to C. auratus and can produce systemic pathology in the gills, muscle, spleen, and kidney.

Keywords: Carassius auratus, Flavobacterium sp., Flavobacterial infection, virulence, histopathology

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APA

Sarker, S., Abraham, T.J., Banerjee, S., & Adikesavalu, H. (2018). Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.). European Journal of Biology, 77(2), 76-80. https://doi.org/10.26650/EurJBiol.2018.0012


AMA

Sarker S, Abraham T J, Banerjee S, Adikesavalu H. Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.). European Journal of Biology. 2018;77(2):76-80. https://doi.org/10.26650/EurJBiol.2018.0012


ABNT

Sarker, S.; Abraham, T.J.; Banerjee, S.; Adikesavalu, H. Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.). European Journal of Biology, [Publisher Location], v. 77, n. 2, p. 76-80, 2018.


Chicago: Author-Date Style

Sarker, Sudeshna, and Thangapalam Jawahar Abraham and Sayani Banerjee and Harresh Adikesavalu. 2018. “Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.).” European Journal of Biology 77, no. 2: 76-80. https://doi.org/10.26650/EurJBiol.2018.0012


Chicago: Humanities Style

Sarker, Sudeshna, and Thangapalam Jawahar Abraham and Sayani Banerjee and Harresh Adikesavalu. “Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.).” European Journal of Biology 77, no. 2 (Jun. 2024): 76-80. https://doi.org/10.26650/EurJBiol.2018.0012


Harvard: Australian Style

Sarker, S & Abraham, TJ & Banerjee, S & Adikesavalu, H 2018, 'Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.)', European Journal of Biology, vol. 77, no. 2, pp. 76-80, viewed 4 Jun. 2024, https://doi.org/10.26650/EurJBiol.2018.0012


Harvard: Author-Date Style

Sarker, S. and Abraham, T.J. and Banerjee, S. and Adikesavalu, H. (2018) ‘Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.)’, European Journal of Biology, 77(2), pp. 76-80. https://doi.org/10.26650/EurJBiol.2018.0012 (4 Jun. 2024).


MLA

Sarker, Sudeshna, and Thangapalam Jawahar Abraham and Sayani Banerjee and Harresh Adikesavalu. “Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.).” European Journal of Biology, vol. 77, no. 2, 2018, pp. 76-80. [Database Container], https://doi.org/10.26650/EurJBiol.2018.0012


Vancouver

Sarker S, Abraham TJ, Banerjee S, Adikesavalu H. Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.). European Journal of Biology [Internet]. 4 Jun. 2024 [cited 4 Jun. 2024];77(2):76-80. Available from: https://doi.org/10.26650/EurJBiol.2018.0012 doi: 10.26650/EurJBiol.2018.0012


ISNAD

Sarker, Sudeshna - Abraham, ThangapalamJawahar - Banerjee, Sayani - Adikesavalu, Harresh. “Pathology of Flavobacterium sp. KG3 in Experimentally Challenged Ornamental Goldfish Carassius auratus (L.)”. European Journal of Biology 77/2 (Jun. 2024): 76-80. https://doi.org/10.26650/EurJBiol.2018.0012



TIMELINE


Submitted11.10.2018
Accepted03.12.2018

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