Exposure to natural ultraviolet B radiation levels has adverse effects on growth, behavior, physiology, and innate immune response in juvenile European seabass (Dicentrarchus labrax)

Alves, Ricardo; Justo, Micaela S.S.; Laranja, Joseph Leopoldo Q.; Alarcon, Jorge F.; Suwailem, Abdulaziz Al; Agustı́, Susana

doi:10.1016/j.aquaculture.2020.736215

Cited by 12 publications

(3 citation statements)

References 96 publications

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“…Key et al [ 15 ] found that early life stage exposure to thin oil sheens and UV rays may have long-term deleterious effects on individuals and, eventually, grass shrimp populations. Short- and long-term UVB radiation caused negative consequences in juvenile European seabass ( Dicentrarchus labrax ), according to Ricardo et al [ 16 ], and some of these impacts were accumulated and dose-dependent. Jordan et al [ 17 ] found that cichlid feeding rates were increased by UVA.…”

Section: Discussionmentioning

confidence: 99%

The Effects of Different UVA Photoperiods on the Growth Performance, Immune Responses, Antioxidant Status and Apoptosis-Related Gene Expression of the Pacific White Shrimp (Penaeus vannamei)

et al. 2021

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UVA is the most common type of solar UV radiation in aquatic environments; however, the effects it causes in shrimp farming in recirculating water systems (RAS) is unclear. Thus, the growth performance, immune responses, antioxidant status and apoptosis-related gene expression in Pacific white shrimp, Penaeus vannamei (body weight 9.56 ± 0.10 g), reared with 12L: 12D full spectrum light as background light under five UVA (peak at 400 nm) photoperiods (0L: 24D, 2L: 22D, 4L: 20D, 8L: 16D and 12L: 12D) at a light intensity of 1 W/m2 were investigated. The results showed that the 2L: 22D and 4L: 20D UVA photoperiods enhanced the growth performance and reduced the feed conversion ratio and the shrimp mortality. Shrimp exposed to UVA (2L: 22D and 4L: 20D) also displayed higher levels of hepatopancreas catalase (CAT), superoxide dismutase (SOD), acid phosphatase (ACP), phenol oxidase (PO) and lysozyme (LZM) compared to the 8L: 16D and 12L: 12D groups. The malondialdehyde (MDA) levels increased in line with the extension of the UVA irradiation time. The mRNA expression of apoptosis-related genes in all the UVA treatments were significantly higher than with the control treatment, except for the 2L: 22D group. The results of the 2L: 22D and 4L: 20D treatments were significantly higher than those of the control group, except for LGBP. In conclusion, 2L: 22D and 4L: 20D UVA photoperiods increased growth performance and decreased FCR, improved the innate immunity and antioxidant response and reduced the mortality rate in adult shrimp.

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Section: Discussionmentioning

confidence: 99%

The Effects of Different UVA Photoperiods on the Growth Performance, Immune Responses, Antioxidant Status and Apoptosis-Related Gene Expression of the Pacific White Shrimp (Penaeus vannamei)

et al. 2021

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“…Studies carried out in this context have shown that plasma total proteins—important nonspecific immune response biomarkers—play multiple functional and protective roles in multiple fish, namely the adjustment of ionic balance and elimination of certain microorganisms and their effects on fish health (Dinardo et al, 2020; Shourbela et al, 2021). Therefore, the effect of stressful events on this indicator is manifested by plasma hypoproteinemia, resulting from their catabolism after the activation of the HPI axis or due to perepheral proteolysis, which disrupts their metabolic and immune functions and affects the growth and development of skeletal muscle of these organisms, in the long term (Alves et al, 2021; Cheyadmi et al, 2023; Islam et al, 2020a; Islam et al 2020b). Our results show that the aquaculture net‐changing operation does not affect the plasma concentrations of total proteins in the two life stages of D. labrax ( p > 0.05, stress state category).…”

Section: Discussionmentioning

confidence: 99%

Physiological stress responses of European sea bass Dicentrarchus labrax related to changing operations of floating net cages in intensive farming conditions at the Moroccan M'diq Bay

Cheyadmi

Chadli²,

Yamlahi

et al. 2023

Journal of Fish Biology

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The present study purposed to quantify and compare in‐situ the primary and secondary physiological stress responses, related to the operation of floating net‐cages changing, in both sub‐adults (523 days post hatching) and adults (916 dph) European sea bass Dicentrarchus labrax, under intensive farming conditions in the Moroccan M'diq Bay. Levels of cortisol, glucose, total cholesterol, total protein and lactate, as well as the percentage of hematocrit were measured before and after stress. The results showed significantly elevated levels of cortisol and blood glucose in both age groups, while total cholesterol and protein levels were unaffected. In fact, blood lactate was significantly reduced in sub‐adults, while in adults this parameter was not affected by the operation. However, the hematocrit percentages measured after the operation were significantly higher than those found before the operation in both groups of fish, which is linked to the increased rate of oxygen renewal by the new net cages and the lower water temperature inside the cages. With regard to the age‐specific response during this essential operation ‐ before and after the operation ‐ plasma cortisol, blood glucose and lactate concentrations, as well as plasma total protein levels, were significantly higher in sub‐adults than in adults. It is concluded that aquaculture practices such as changing the aquaculture net‐cage could have repercussions in terms of the classic physiological responses to stress in D. labrax.This article is protected by copyright. All rights reserved.

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“…Thus while UVR (mainly UV-B) could cause DNA damage, the co-exposure to UV-A and blue light activate photoreactivating enzymes, alleviating the harmful impacts of shorter UVR to certain extent (Hearst, 1995;Sancar, 1996). Nevertheless, the ability of organisms to tolerate UVR varies considerably across various life stages, taxonomic groups, and prevailing environmental conditions (Alves et al, 2021;Leech and Williamson, 2000;Bancroft et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Aerobic respiration, biochemical composition, and glycolytic responses to ultraviolet radiation in jellyfish Cassiopea sp

Aljbour

Alves²,

Agustı́³

2023

Front. Mar. Sci.

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The light-dependent zooxanthellate jellyfish Cassiopea sp. (the upside-down jellyfish) is invasive/exotic in many shallow and clear marine habitats, where the jellyfish might be exposed to high levels of ultraviolet radiation (UVR). Compared to other reef organisms, the sensitivity/resilience of the semi-transparent jellyfish to UVR exposure is overlooked. Therefore, we experimentally investigated the metabolic and physiological responses of Cassiopea sp. from the Red Sea to natural levels of underwater UVR following 16 days of exposure to three light treatments: 1) control group with only photosynthetically active radiation (PAR), 2) PAR+UV-B, and 3) PAR+UV-B+UV-A. While jellyfish body mass increased (by 40%) significantly in the control group, it did not increase in either of the UV treatments. However, both UV-exposed jellyfish had higher (98% to 120%) mitochondrial electron transport system (ETS) activity than the control group. Therefore, the results indicate elevated aerobic respiration rates in UV-exposed jellyfish (i.e., reflecting a higher energy cost of UVR exposure). Neither the lactate dehydrogenase (LDH) activity nor the available energy (Ea) exhibited different levels among UVR treatments compared to the control group. In contrast, pyruvate kinase activity was significantly lower (by 46%) in all UV-exposed jellyfish compared to the control group. Unchanged Ea and LDH activity combined with higher ETS activity indicates a high aerobic capacity of jellyfish, which might explain their ability to cope with UVR exposure-induced higher energy demands without inducing the onset of anaerobiosis. The results indicated that UV-A does not amplify or modulate jellyfish physiology and growth under UV-B exposure. In conclusion, the findings suggest that the jellyfish is more resilient (i.e., in terms of survival) to UVR than other cnidarians. This study on Cassiopea is the first to address its metabolic and physiological responses to UVR. Therefore, it could be used as a framework for further studies aiming to better understand jellyfish physiology.

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Exposure to natural ultraviolet B radiation levels has adverse effects on growth, behavior, physiology, and innate immune response in juvenile European seabass (Dicentrarchus labrax)

Cited by 12 publications

References 96 publications

The Effects of Different UVA Photoperiods on the Growth Performance, Immune Responses, Antioxidant Status and Apoptosis-Related Gene Expression of the Pacific White Shrimp (Penaeus vannamei)

The Effects of Different UVA Photoperiods on the Growth Performance, Immune Responses, Antioxidant Status and Apoptosis-Related Gene Expression of the Pacific White Shrimp (Penaeus vannamei)

Physiological stress responses of European sea bass Dicentrarchus labrax related to changing operations of floating net cages in intensive farming conditions at the Moroccan M'diq Bay

Aerobic respiration, biochemical composition, and glycolytic responses to ultraviolet radiation in jellyfish Cassiopea sp

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