Temporal changes in environmental conditions of a mid-latitude estuary (southern Chile) and its influences in the cellular response of the euryhaline anemone Anthopleura hermaphroditica

Cubillos, V.; Ramírez, Eduardo; Cruces, Edgardo; Montory, Jaime A.; Segura, C. J.; Mardones, Daniela

doi:10.1016/j.ecolind.2018.01.015

Cited by 8 publications

(17 citation statements)

References 79 publications

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“…The levels of lipid peroxidation and protein carbonyls observed in this study are lower than those previously reported for A. hermaphroditica in the Quempillén river estuary [ 10 ]. Our study demonstrates that exposure to PAR + UVA and PAR + UVA + UVB radiation generated a significant increase in the levels of oxidative damage to lipids and proteins in A. hermaphroditica .…”

Section: Discussioncontrasting

confidence: 89%

“…Levels of total antioxidant capacity observed in A. hermaphroditica during experimental exposure to UVB with sediment (68 mg Trolox Eq g −1 FW) are consistent with those observed (35 to 70 mg Trolox Eq g −1 FW) in the field for the same species in the Quempillén estuary [ 10 ]. Significant increases in total antioxidant capacity at PAB for adults and PA and PAB for juveniles reinforce the fact that juveniles of A. hermaphroditica show greater susceptibility to experimental radiation.…”

Section: Discussionsupporting

confidence: 79%

“…Although the photodynamic response of MAAs was not analyzed in this study, it is necessary to indicate that in A. hermaphroditica , the presence of Mycosporine 2-glyicine (Myc 2-gly) was described, which can absorb mostly λ max = 334 nm, a compound that would allow minimizing the damage due to UVR absorption [ 10 ]. Previous observations carried out in sea anemones of the Anthopleura genus indicate that the presence of Myc 2-gly is common among different species, and their presence is associated with those that exhibit symbiotic relations with zooxanthellae [ 82 ].…”

Section: Discussionmentioning

confidence: 99%

“…Anemones were deposited individually on the sediment of the aquaria, which were immediately covered with Clear 226-UV (Chris James Lighting Filters, London, UK), Folanorm SF-AS (0.13 mm; Lüerssen Grafische Vertriebs GmbH, Germany) and cellulose acetate filters (CDA; 0.13 mm; Grafix ® , Maple Heights, OH, USA) to generate the radiation treatments P (400–700 nm), PA (315–700 nm) and PAB (280–700 nm), respectively. PAR fluorescent tubes (Philips Day Light, Philips, Eindhoven, The Netherlands), UVA (Philips TL40 W, Philips, Eindhoven, The Netherlands) and UVB (Phillips TL20, Philips, Eindhoven, The Netherlands) were placed 30 cm above the experimental aquaria to simulate the natural irradiance conditions registered in the environment [ 10 ].…”

Section: Methodsmentioning

confidence: 99%

“…Many infaunal organisms depend upon burrowing for survival, increasing their levels of food capture [ 1 , 2 , 3 ], generating physical protection against predators or minimizing physiological stress, especially in highly unstable environments [ 4 , 5 , 6 ]. Estuaries are considered highly stressful areas because tidal cycles generate pronounced environmental changes and high levels of physiological stress in individuals living there [ 7 , 8 , 9 ], for example, by exposing sessile or sedentary organisms to the detrimental action of ultraviolet-B radiation (UVB; 280–320 nm), especially when low tide coincides with the daily peak in environmental radiation [ 10 ]. The absorption of UVB by different chromophores (i.e., DNA, amino acids, melanin and metabolites) indirectly exacerbates the generation of reactive oxygen species (ROS) [ 11 , 12 , 13 , 14 ] that are normally formed as byproducts of oxygen reduction in the cell.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Ultraviolet Radiation on Sediment Burial Parameters and Photo-Oxidative Response of the Intertidal Anemone Anthopleura hermaphroditica

et al. 2022

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Anthopleura hermaphroditica is an intertidal anemone that lives semi-buried in soft sediments of estuaries and releases its brooded embryos directly to the benthos, being exposed to potentially detrimental ultraviolet radiation (UVR) levels. In this study, we investigated how experimental radiation (PAR: photosynthetically active radiation; UVA: ultraviolet A radiation; and UVB: ultraviolet B radiation) influences burrowing (time, depth and speed) in adults and juveniles when they were exposed to PAR (P, 400–700 nm), PAR + UVA (PA, 315–700 nm) and PAR + UVA + UVB (PAB, 280–700 nm) experimental treatments. The role of sediment as a physical shield was also assessed by exposing anemones to these radiation treatments with and without sediment, after which lipid peroxidation, protein carbonyls and total antioxidant capacity were quantified. Our results indicate that PAB can induce a faster burial response compared to those anemones exposed only to P. PAB increased oxidative damage, especially in juveniles where oxidative damage levels were several times higher than in adults. Sediment offers protection to adults against P, PA and PAB, as significant differences in their total antioxidant capacity were observed compared to those anemones without sediment. Conversely, the presence or absence of sediment did not influence total antioxidant capacity in juveniles, which may reflect that those anemones have sufficient antioxidant defenses to minimize photooxidative damage due to their reduced tolerance to experimental radiation. Burrowing behavior is a key survival skill for juveniles after they have been released after brooding.

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Section: Discussioncontrasting

confidence: 89%

Section: Discussionsupporting

confidence: 79%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Ultraviolet Radiation on Sediment Burial Parameters and Photo-Oxidative Response of the Intertidal Anemone Anthopleura hermaphroditica

et al. 2022

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Integrated biomarker responses in wild populations of the intertidal sea anemone Bunodosoma zamponii living under different anthropogenic pressures

Vazquez,

Crupkin,

Chierichetti

et al. 2024

Environ Sci Pollut Res

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The response of aquatic ecosystems to the interactive effects of stratospheric ozone depletion, UV radiation, and climate change

Neale

Williamson

Banaszak

et al. 2023

Photochem Photobiol Sci

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Variations in stratospheric ozone and changes in the aquatic environment by climate change and human activity are modifying the exposure of aquatic ecosystems to UV radiation. These shifts in exposure have consequences for the distributions of species, biogeochemical cycles, and services provided by aquatic ecosystems. This Quadrennial Assessment presents the latest knowledge on the multi-faceted interactions between the effects of UV irradiation and climate change, and other anthropogenic activities, and how these conditions are changing aquatic ecosystems. Climate change results in variations in the depth of mixing, the thickness of ice cover, the duration of ice-free conditions and inputs of dissolved organic matter, all of which can either increase or decrease exposure to UV radiation. Anthropogenic activities release oil, UV filters in sunscreens, and microplastics into the aquatic environment that are then modified by UV radiation, frequently amplifying adverse effects on aquatic organisms and their environments. The impacts of these changes in combination with factors such as warming and ocean acidification are considered for aquatic micro-organisms, macroalgae, plants, and animals (floating, swimming, and attached). Minimising the disruptive consequences of these effects on critical services provided by the world’s rivers, lakes and oceans (freshwater supply, recreation, transport, and food security) will not only require continued adherence to the Montreal Protocol but also a wider inclusion of solar UV radiation and its effects in studies and/or models of aquatic ecosystems under conditions of the future global climate. Graphical abstract

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Temporal changes in environmental conditions of a mid-latitude estuary (southern Chile) and its influences in the cellular response of the euryhaline anemone Anthopleura hermaphroditica

Cited by 8 publications

References 79 publications

Effects of Ultraviolet Radiation on Sediment Burial Parameters and Photo-Oxidative Response of the Intertidal Anemone Anthopleura hermaphroditica

Effects of Ultraviolet Radiation on Sediment Burial Parameters and Photo-Oxidative Response of the Intertidal Anemone Anthopleura hermaphroditica

Integrated biomarker responses in wild populations of the intertidal sea anemone Bunodosoma zamponii living under different anthropogenic pressures

The response of aquatic ecosystems to the interactive effects of stratospheric ozone depletion, UV radiation, and climate change

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