Histopathology of &lt;i&gt;Aeromonas caviae&lt;/i&gt; Infection in Challenged Nile Tilapia &lt;i&gt;Oreochromis niloticus&lt;/i&gt; (Linnaeus, 1758)

Roy, Anwesha; Singha, Jasmine; Abraham, Thangapalam Jawahar

doi:10.5376/ija.2018.08.0020

Cited by 8 publications

(15 citation statements)

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“…Infection with aeromonad bacteria causes MAS, which is most usually associated with A. hydrophila [71,72], but other species such as A. sobria [71,73], A. veronii [74,75], and A. caviae [76] have been documented to have a similar etiology in the past. The Aeromonas genus consists of many species.…”

Section: Motile Aeromonas Septicemia (Mas) Vaccinementioning

confidence: 99%

Current status and advances of fish vaccines in Malaysia

Ridzuan

Abdullah²,

Ramly³

et al. 2022

Vet World

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Fish diseases have a significant negative influence on the Malaysian aquaculture industry. Since the 1980s, the sector has grown in size, which has resulted in a rise in the prevalence of infectious outbreaks affecting both freshwater and marine cultured fish species. Demand for commercially available fish vaccinations is predicted to increase as infectious disease outbreaks continue to occur. In Malaysia, aquaculture vaccine research and development (R&D) are still in its infancy, with most efforts concentrating on producing vaccines against bacterial infections, most notably streptococcosis, vibriosis, and motile Aeromonas septicemia. Despite several attempts, no homegrown vaccine has been effectively introduced into the manufacturing pipeline to date. At the moment, only three imported aquatic vaccines have received full permission, a far cry from the 314 and 60 vaccines licensed in the poultry and porcine industries, respectively. This review will describe recent findings regarding the development of aquaculture vaccines for certain fish species and diseases in Malaysia. In our opinion, R&D on fish vaccines is critical to the aquaculture industry's viability.

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Section: Motile Aeromonas Septicemia (Mas) Vaccinementioning

confidence: 99%

Current status and advances of fish vaccines in Malaysia

Ridzuan

Abdullah²,

Ramly³

et al. 2022

Vet World

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“…4a-d). Liver specific alterations such as vacuolated hepatocytes were reported in A. hydrophila infected tilapia (Alyahya et al, 2018); congestion in goldfish (Rosidah et al, 2020); MMC accumulation in Nile tilapia (Roy et al, 2018) as well as MMC accumulation, hepatocyte degeneration and vacuolation in golden mahseer (Kumar et al, 2016).…”

Section: Livermentioning

confidence: 99%

Immuno-pathological changes in Indian catfish Clarias magur (Hamilton, 1822) upon experimental challenge with Aeromonas hydropila

Muduli¹,

Rathore²,

Srivastava³

et al. 2021

Indian Journal of Fisheries

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Motile Aeromonas septicaemia (MAS), caused by Aeromonas hydrophila, is one of the most significant problem among the bacterial diseases responsible for causing mortality in catfishes. The objective this study was to understand the modulation of innate immune parameters and histopathological alteration in Indian catfish Clarias magur (Hamilton, 1822), following intraperitoneal injection with A. hydrophila. At 3 to 8 h post-infection (hpi), respiratory burst activity, myeloperoxidase, protease, total anti-protease and α2 macroglobulin increased significantly (p<0.05) indicating immune response of host against pathogen invasion at an early stage of infection. The total protein, albumin, albumin/globulin ratio and bactericidal activity were significantly decreased indicating the response of pathogen to suppress host immune response to establish infection. Serum bactericidal activity, bacterial agglutination titre and lysozyme activity increased significantly at 24 hpi. Histopathological examination of infected fish revealed the accumulation of melanomacrophage centres, congestion, hepatocyte degeneration and vacuolated hepatocytes of liver; hyaline droplet accumulation, lymphocytes infiltration and diffuse necrosis of renal tubule in kidney; unilateral fusion of secondary gill lamellae, leukocytic infiltration as well as dilated central venous sinus in gills. Knowledge regarding the immune response in magur could be useful for developing strategies for improving disease resistance against A. hydrophila infection.

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“…Most of the other fish in treatment a had a normal feed response and decreased again on the 13 th d. It is suspected that the fish had experienced healing by its natural body resistance until the 13 th d, but its body resistance was no longer able to resist the attacks of A. hydrophila and Koi fry experiencing metabolic disorders due to the attack of A. hydrophila. Roy et al (2018) stated that one of the target organs of attack of A.hydrophila is the kidney, where the disruption of these organs can affect the body's metabolic processes.…”

Section: Response To Feedmentioning

confidence: 99%