Abstract
Modulation of innate immunity was determined in the Aeromonas hydrophila-challenged Asain sea bass, Lates calcarifer. The haemato-immunological parameters were studied in blood serum. Blood was sampled at 3, 6, 12, and 24th h post-challenged infection and control. Histopathological examination of most important organs (ventral musculature tissue, kidney and liver) was studied in the infected fish. The present study results indicated that at early stages of infection, TEC, Hb, PCV, MCV, MCH, and MCHC were not altered significantly, whereas in TLC, the values were fluctuated. Lysozyme, NBT, and protein were significantly increased (P < 0.05) at all the respective time periods than the control. Histopathological results of infected tissues revealed that the myofibrillar necrosis, congested blood vessels, large-sized melano-macrophage with hyper-cellular activity.
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Acknowledgements
We would like to thank RGCA, Sirkali, India, for providing the fish source during the study.
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The authors greatly acknowledge the Ministry of Earth Science (MoES), Government of India, for financial support for the project entitled “Prevalence and impact of ovarian parasitic nematode infestation on the economically important fishes of Tamil Nadu coast including cages and mariculture facilities” (MoES/36/OOIS/Extra/49/2016).
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In the present study, the Asian sea bass (L. calcarifer) used for experimental studies is widely consumed and cultured one in India. Previously, similar work has been carried out similarly. This article does not involve human samples or higher animals during the study.
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Kathirkaman, P., Ayyaru, G., Serelathan, M. et al. Innate immunological responses of Asian sea bass, Lates calcarifer (Bloch, 1790) for experimentally challenged Aeromonas hydrophila infection. Comp Clin Pathol 27, 927–931 (2018). https://doi.org/10.1007/s00580-018-2683-8
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DOI: https://doi.org/10.1007/s00580-018-2683-8