Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities

Climate change-driven extreme climatic events are expected to challenge ectotherms' physiological tolerance. The hemato-physiological modulation potentials of fish during ambient extreme-cold events at various salinities are poorly studied. In this study, we evaluated the growth, hemato-physiol...

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Autores principales:	Md Jakiul Islam, Matthew James Slater, Rajko Thiele, Andreas Kunzmann
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Climate Temperature Aquaculture Immunity Physiology Acclimation Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d107abcf87a6423aba5a29a607a98c31
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spelling	oai:doaj.org-article:d107abcf87a6423aba5a29a607a98c312021-12-01T04:41:30ZInfluence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities1470-160X10.1016/j.ecolind.2020.107280https://doaj.org/article/d107abcf87a6423aba5a29a607a98c312021-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X2031222Xhttps://doaj.org/toc/1470-160XClimate change-driven extreme climatic events are expected to challenge ectotherms' physiological tolerance. The hemato-physiological modulation potentials of fish during ambient extreme-cold events at various salinities are poorly studied. In this study, we evaluated the growth, hemato-physiological, antioxidants, and immunological responses of European seabass, Dicentrarchus labrax acclimatized at 30, 12, 6, and 3 PSU followed by an extreme ambient cold (8 °C) exposure for 20 days. Juveniles acclimatized at 30 and 3 PSU showed significantly low growth performance (p < 0.05). Red blood cells (RBC) count, hematocrit, hemoglobin, and serum protein content were decreased in 3 and 30 PSU fish. In contrast, significantly higher white blood cells (WBC) count, skin mucus cortisol, different types of erythrocytic cellular abnormalities (ECA), and erythrocytic nuclear abnormalities (ENA) were observed in 30 and 3 PSU fish. Also, higher activities of serum antioxidants [superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT), glutathione reductase (GR)], and upregulation of tumor necrosis factor α (TNF-α) in the spleen were observed in 3 and 30 PSU fish. In addition, on day 20, phagocytic respiratory burst (RB) and serum lysozyme activities (LSZ) were significantly higher in 3 and 30 PSU fish during extreme cold exposure. None of the repeatedly evaluated parameters indicated acclimation capacity to cope with tested salinities during cold exposure. However, taken together, our results indicate that Dicentrarchus labrax acclimatized at intermediary salinities (6 and 12 PSU) can perform comparatively better during ambient extreme-cold exposure (8 °C).Md Jakiul IslamMatthew James SlaterRajko ThieleAndreas KunzmannElsevierarticleClimateTemperatureAquacultureImmunityPhysiologyAcclimationEcologyQH540-549.5ENEcological Indicators, Vol 122, Iss , Pp 107280- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Climate Temperature Aquaculture Immunity Physiology Acclimation Ecology QH540-549.5
spellingShingle	Climate Temperature Aquaculture Immunity Physiology Acclimation Ecology QH540-549.5 Md Jakiul Islam Matthew James Slater Rajko Thiele Andreas Kunzmann Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities
description	Climate change-driven extreme climatic events are expected to challenge ectotherms' physiological tolerance. The hemato-physiological modulation potentials of fish during ambient extreme-cold events at various salinities are poorly studied. In this study, we evaluated the growth, hemato-physiological, antioxidants, and immunological responses of European seabass, Dicentrarchus labrax acclimatized at 30, 12, 6, and 3 PSU followed by an extreme ambient cold (8 °C) exposure for 20 days. Juveniles acclimatized at 30 and 3 PSU showed significantly low growth performance (p < 0.05). Red blood cells (RBC) count, hematocrit, hemoglobin, and serum protein content were decreased in 3 and 30 PSU fish. In contrast, significantly higher white blood cells (WBC) count, skin mucus cortisol, different types of erythrocytic cellular abnormalities (ECA), and erythrocytic nuclear abnormalities (ENA) were observed in 30 and 3 PSU fish. Also, higher activities of serum antioxidants [superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT), glutathione reductase (GR)], and upregulation of tumor necrosis factor α (TNF-α) in the spleen were observed in 3 and 30 PSU fish. In addition, on day 20, phagocytic respiratory burst (RB) and serum lysozyme activities (LSZ) were significantly higher in 3 and 30 PSU fish during extreme cold exposure. None of the repeatedly evaluated parameters indicated acclimation capacity to cope with tested salinities during cold exposure. However, taken together, our results indicate that Dicentrarchus labrax acclimatized at intermediary salinities (6 and 12 PSU) can perform comparatively better during ambient extreme-cold exposure (8 °C).
format	article
author	Md Jakiul Islam Matthew James Slater Rajko Thiele Andreas Kunzmann
author_facet	Md Jakiul Islam Matthew James Slater Rajko Thiele Andreas Kunzmann
author_sort	Md Jakiul Islam
title	Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities
title_short	Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities
title_full	Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities
title_fullStr	Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities
title_full_unstemmed	Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities
title_sort	influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in european seabass, dicentrarchus labrax acclimatized at different salinities
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d107abcf87a6423aba5a29a607a98c31
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Influence of extreme ambient cold stress on growth, hematological, antioxidants, and immune responses in European seabass, Dicentrarchus labrax acclimatized at different salinities

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