Copper effects on biomarkers associated with photosynthesis, oxidative status and calcification in the Brazilian coral Mussismilia harttii (Scleractinia, Mussidae)

Marangoni, Laura Fernandes de Barros; Marques, Joseane Aparecida; Duarte, Gabriela; Pereira, Cristiano Macedo; Calderón, Emiliano Nicolas; Castro, Clovis B.; Bianchini, Adalto

doi:10.1016/j.marenvres.2017.08.002

Cited by 45 publications

(21 citation statements)

References 54 publications

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“…Similar to previous reports [8,30], treatments with Cu 2+ depressed cell growth and decreased contents of photosynthetic pigments (chl-a, car or chl-b) in S. quadricauda and S. acutus, demonstrating that high levels of Cu 2+ triggered severe environmental concerns. A high level of Cu 2+ blocked the electron transport and subsequently inhibited PSII activity [31], which further decreased F ν /F m and adversely affected photosynthesis of algae [31][32][33][34][35]. In the present study, treatments with high levels of Cu 2+ decreased contents of photosynthetic pigments, rETR max and I k in both S. quadricauda and S. acutus, suggesting that the photosynthetic process was inhibited.…”

Section: Discussionsupporting

confidence: 42%

Effects of Cu2+ and Hg2+ on Growth and Photosynthesis of Two Scenedesmus Species

Dong

Zhang

Wei

et al. 2020

Pol. J. Environ. Stud.

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Hg 2+ and Cu 2+ are two typical contaminants. Environmental pollution of Hg 2+ and Cu 2+ have been observed globally. Hg 2+ is high toxicity to human beings and environments due to its bioaccumulation and biomagnification within trophic levels [1]. Hg 2+ could be transformed to methylmercury, which is even more toxic [2]. Hg 2+ and derivates can cause severe disorders to organisms, including neurological, immunological, cardiac, motor, reproductive and genetic toxicity, and also is associated with Alzeihemer's, Parkinson's, autism, lupus, and amyotrophic lateral sclerosis [3,4]. Recent molecular studies have revealed that Hg 2+ treatment decreased many critical processes, including ferric iron binding, antioxidant activity, cellular homeostasis, and glutathione metabolism in copepod

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Section: Discussionsupporting

confidence: 42%

Effects of Cu2+ and Hg2+ on Growth and Photosynthesis of Two Scenedesmus Species

Dong

Zhang

Wei

et al. 2020

Pol. J. Environ. Stud.

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“…Marine pollution and environmental stressors threaten coral reefs and wildlife worldwide 60,61 . Coral reefs in coastal areas are widely exposed to contaminated seawater from untreated effluents, exploratory marine activities, metals, human actions, climate change and spills of oil and other substances [62][63][64][65] . Corals and other cnidarians can be exposed to synthetic compounds such as estrogens by absorbing dissolved products, ingesting food, or contacting sediments or suspended solids 66 .…”

Section: Discussionmentioning

confidence: 99%

Estrogen induces shift in abundances of specific groups of the coral microbiome

Vilela

Villela

Duarte

et al. 2021

Sci Rep

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Synthetic estrogens such as ethinylestradiol (EE2) are persistent micropollutants that are not effectively removed from wastewater by conventional treatments. These contaminants are released into waterbodies, where they disrupt endocrine systems of organisms and cause harmful effects such as feminization, infertility, reproduction problems and genital malformations. The consequences of this pollution for key marine ecosystems such as coral reefs and their associated microbiomes are underexplored. We evaluated the effects of EE2 concentrations of 100 ng L−1 and 100 µg L−1 on the coral metaorganism Mussismilia harttii. The results indicated no effects on visible bleaching or Fv/Fm ratios in the corals during a 17-day microcosm experiment. However, next-generation sequencing of 16S rDNA revealed a statistically significant effect of high EE2 concentrations on OTU richness, and shifts in specific microbial groups after treatments with or without EE2. These groups might be bioindicators of early shifts in the metaorganism composition caused by EE2 contamination.

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“…lipids and DNA). Therefore they can be good predictors of bleaching/mortality in coral reef organisms [ 48 , 49 , 50 , 51 ]. Lipid peroxidation (LPO) measurement was performed using the fluorimetric method described [ 52 ], which quantifies oxidative stress by measuring the peroxidative damage to lipids induced by free radicals [ 52 ].…”

Section: Methodsmentioning

confidence: 99%

“…In the present study, Ca-ATPase activity was used as a biomarker of this process, since Ca-ATPase is recognized as a key-enzyme in the calcification process in scleractinian corals. Indeed, it has been used as a good indicator of growth rates in calcifying reef organisms [ 50 , 51 , 54 , 55 , 56 ]. Ca-ATPase activity was measured under optimized substrate concentrations for each species, following a modified protocol originally developed by Chan [ 57 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of depth on reef fish communities: Insights of a “deep refuge hypothesis” from Southwestern Atlantic reefs

et al. 2018

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Deeper reefs are often considered to be less susceptible to local and global disturbances, such as overfishing, pollution and climate change, compared to shallow reefs and therefore could act as refugia for shallow water species. Hence, the interest on deeper reefs has happened at a time when shallow reefs are undergoing unprecedented changes. Here we investigated the hypothesis that fish community differed from shallow to deeper reefs due to factors apart from habitat structure and quality and therefore discuss for the first-time insights of a “deep refuge hypothesis” from Brazilian reefs. We collected data on fish community, benthic community and physiological conditions of two coral species on shallow (< 6 m) and deep reefs (> 25 m). No significant difference on substratum composition was observed comparing sites and depths. Additionally, physiological data on corals also showed similar oxidative status and growth conditions when comparing the two-coral species in shallow and deep reefs. Conversely, our study demonstrated strong differences on reef fish communities in terms of abundance, species richness, trophic groups, size classes and groups of interest when comparing shallow and deeper reefs. Fish abundance was 2-fold higher and species richness was up to 70% higher on deeper reefs. Also, a significant difference was observed comparing trophic groups of reef fish. Macrocarnivore, Mobile invertebrate feeders, Planktivores, Sessile Invertebrates Feeders and Roving Herbivores were more abundant on deeper reefs. On the other hand, Territorialist Herbivores almost exclusively dominated shallow reefs. Strong differences were also observed comparing the abundance of reef fish groups of interest and their respective size classes between shallow and deeper reefs. Ornamental, Great Herbivores and Groupers showed clear differences, with higher abundances being observed in deeper reefs. Considering size classes, larger individuals (> 15 cm) of Great Herbivores, Groupers and Snapper were uniquely recorded at deeper reefs. Additionally, individuals with > 30 cm were recorded almost exclusively on deeper reefs for all the analyzed groups of interest. Our findings suggest that fishing pressure on the target species may be attenuated on deeper reefs, and these regions may therefore be considered as areas of refuge from shallow water impacts. Therefore, the likely potential for deeper reefs protect species from natural or anthropogenic disturbances increases the attention of marine conservation planning and resource management on including deeper reefs in protected areas.

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Copper effects on biomarkers associated with photosynthesis, oxidative status and calcification in the Brazilian coral Mussismilia harttii (Scleractinia, Mussidae)

Cited by 45 publications

References 54 publications

Effects of Cu<sup>2+</sup> and Hg<sup>2+</sup> on Growth and Photosynthesis of Two <i>Scenedesmus</i> Species

Effects of Cu<sup>2+</sup> and Hg<sup>2+</sup> on Growth and Photosynthesis of Two <i>Scenedesmus</i> Species

Estrogen induces shift in abundances of specific groups of the coral microbiome

Effects of depth on reef fish communities: Insights of a “deep refuge hypothesis” from Southwestern Atlantic reefs

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