The biochemical response of two commercial bivalve species to exposure to strong salinity changes illustrated by selected biomarkers

Gonçalves, Ana M.M.; Barroso, D.V.; Serafim, Teresa L.; Verdelhos, Tiago; Marques, João Carlos; Gonçalves, Fernando

doi:10.1016/j.ecolind.2017.01.020

Cited by 35 publications

(17 citation statements)

References 41 publications

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“…Under salinity stress, the bivalves Cerastoderma edule and Scrobicularia plana reduce food consumption and physiological pathways; a decrease in PUFA content is observed in C. edule. They can store the FAs which are of high physiological importance by reducing their activity and energy consumption [147]. The authors attribute the observed variations in the FA composition, particularly the contents of n-3 PUFAs, NMI FAs and n-6 PUFAs in the littoral mussel M. edulis from two different habitats, presumably to the necessity to survive the frequent fluctuations in such environmental factors as water temperature and salinity [148].…”

Section: Variations In Fatty Acids In Response To Environmental Factorsmentioning

confidence: 99%

Fatty Acids of Marine Mollusks: Impact of Diet, Bacterial Symbiosis and Biosynthetic Potential

Zhukova

2019

Biomolecules

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The n-3 and n-6 polyunsaturated fatty acid (PUFA) families are essential for important physiological processes. Their major source are marine ecosystems. The fatty acids (FAs) from phytoplankton, which are the primary producer of organic matter and PUFAs, are transferred into consumers via food webs. Mollusk FAs have attracted the attention of researchers that has been driven by their critical roles in aquatic ecology and their importance as sources of essential PUFAs. The main objective of this review is to focus on the most important factors and causes determining the biodiversity of the mollusk FAs, with an emphasis on the key relationship of these FAs with the food spectrum and trophic preference. The marker FAs of trophic sources are also of particular interest. The discovery of new symbioses involving invertebrates and bacteria, which are responsible for nutrition of the host, deserves special attention. The present paper also highlights recent research into the molecular and biochemical mechanisms of PUFA biosynthesis in marine mollusks. The biosynthetic capacities of marine mollusks require a well-grounded evaluation.Biomolecules 2019, 9, 857 2 of 25 consumers and food consumed, and, therefore, FA can be used as efficient and useful biomarkers for the study of trophic interactions between organisms in aquatic ecosystems [5,6].However, information about the endogenous mechanisms of marine invertebrates responsible for synthesis of n-3 and n-6 PUFAs is still being accumulated. Recent researches have shown the potential of some marine mollusks for endogenous synthesis of long chain PUFAs (LC-PUFAs) [7][8][9]. Based on the transcriptome and genome sequences, as well as various publicly available databases, a number of novel fatty acyl desaturases (Fad) and elongations of very long-chain fatty acid (Elovl) genes have been identified from the major orders of the phylum Mollusca, suggesting that many mollusks possess most of the required enzymes for the synthesis of long chain LC-PUFAs [10]. The question whether these findings of the desaturase sequences in invertebrate species really cast doubt on the idea that the organic matter is transferred along the food chains, and thus the existence of trophic links between primary producers and consumers and the relationship of the FA composition of animals and the FA composition of food, are currently under discussion [8].Mollusk FA have attracted the attention of researchers that has been driven by their critical roles in aquatic ecology and in trophic food webs, as well as by their importance as sources of essential FAs with important impacts on human health [11]. Among marine animals, mollusks are especially important as a source of PUFAs (after fish). Many members of the phylum Mollusca, commonly known as clams and snails, are traditional seafood items in human diets, and rich in essential PUFAs. The edible mollusks are commercially harvested and cultured [12]. Marine bivalve mollusks are highly appreciated, partly because of their positive effects on human health ...

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Section: Variations In Fatty Acids In Response To Environmental Factorsmentioning

confidence: 99%

Fatty Acids of Marine Mollusks: Impact of Diet, Bacterial Symbiosis and Biosynthetic Potential

Zhukova

2019

Biomolecules

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“…This situation may be of major concern since seawater salinity has been identified as one of the most important factors impacting estuarine and coastal areas (Cardoso et al, 2008;IPCC 2013), with known effects on species richness and abundance, organisms growth and reproduction, and population spatial distribution (Lapresta-Fernández et al, 2012;Matozzo and Marin 2011;Verdelhos et al 2015;Gosling, 2008;Telesh and Khlebovich, 2010). Under laboratory conditions different authors also demonstrated the negative impacts caused by salinity changes on marine species, namely on bivalves, including alterations on their metabolic profiles (Carregosa et al, 2014a), metabolism and oxidative status (Sarà et al, 2008;Coughlan et al, 2009;Carregosa et al, 2014b;Gonçalves et al, 2017;Hamer et al, 2008;Moreira et al, 2016a;Velez et al, 2016), and also on bivalves' immune responses (Bussell et al, 2008;Matozzo and Marin, 2011;Reid et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Combined effects of salinity changes and salicylic acid exposure in Mytilus galloprovincialis

Freitas

Silvestro

Coppola

et al. 2020

Science of The Total Environment

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“…In general, an organism under stress conditions may change its physiological and biochemical responses as a strategic mechanism to compensate the organism's requirements [20]. In this study, the species from different trophic levels (a marine microalgae and estuarine bivalve species) exposed to a range of salinity concentrations under distinct temperature conditions and under different treatments of a metal (copper) and a herbicide (Primextra) revealed changes in its fatty acid content.…”

Section: Resultsmentioning

confidence: 89%

“…Fatty acids are considered to be an accurate tool in trophic interaction studies [15], mainly due to their importance in the health/stability of the ecosystem, and because they are transferred conservatively to higher trophic levels along the trophic food web [4,16]. Furthermore, FA profiles can reflect structural changes in species' biochemical composition in response to stressors [17][18][19][20]. Lipid components are also very sensitive to environmental changes, which make them an efficient assessment tool to monitor toxicological effects on the marine biota as bio-indicators of ecosystem health [19].…”

Section: Introductionmentioning

confidence: 99%

“…This bivalve species lives worldwide occurring from the Northern Norway to the North Africa, on the east coast of the Atlantic and in Murmansk in the Arctic [39]. Due to its sessile life style, easy sampling collection, maintenance, handling and sensitivity to chemicals, C. edule is widely used as standard species in ecotoxicological bioassays [19,20]. Due to its high ability to filtrate and accumulate large amount of pollutants, this species is also used as bio-indicator in ecological studies [39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fatty Acids’ Profiles of Aquatic Organisms: Revealing the Impacts of Environmental and Anthropogenic Stressors

Gonçalves¹,

Marques²,

Gonçalves³

2017

Fatty Acids

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There is a great concern about the impacts of climate changes namely due to salinity seawater and temperature alterations in aquatic organisms with the estuarine and coastal environments being the major affected areas. The intensive usage of chemicals in an indiscriminate way in agriculture practices, achieving, in some cases, values above the limits of contamination authorized by the European legislation, also drastically affects the surrounded estuarine areas with profound consequences to the water quality and the aquatic communities. It is known that stressors affect organisms' physiological conditions with recent works concerning alterations in the fatty acid (FA) profiles associated with environmental and contamination events that become more frequent. FA plays a key role in immune and physiological functions and is associated with the prevention of some diseases, shown to be good bio-indicators to assess the organisms' impacts under stress conditions. Thus, this chapter proposes to address natural (salinity and temperature) and chemical (herbicide and metal) stressors' impacts in the FA profiles of Thalassiosira weissflogii and Cerastoderma edule and infers about the effects on organisms' physiological processes and along the food web. Consequences in food resources and to healthier and nutritious food consumption with benefits to human beings are also assessed.

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The biochemical response of two commercial bivalve species to exposure to strong salinity changes illustrated by selected biomarkers

Cited by 35 publications

References 41 publications

Fatty Acids of Marine Mollusks: Impact of Diet, Bacterial Symbiosis and Biosynthetic Potential

Fatty Acids of Marine Mollusks: Impact of Diet, Bacterial Symbiosis and Biosynthetic Potential

Combined effects of salinity changes and salicylic acid exposure in Mytilus galloprovincialis

Fatty Acids’ Profiles of Aquatic Organisms: Revealing the Impacts of Environmental and Anthropogenic Stressors

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