Metal accumulation and differentially expressed proteins in gill of oyster (Crassostrea hongkongensis) exposed to long-term heavy metal-contaminated estuary

Luo, Liang; Ke, Caihuan; Guo, Xiaoyu; Shi, Bo; Huang, Meng

doi:10.1016/j.fsi.2014.03.029

Cited by 77 publications

(35 citation statements)

References 75 publications

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“…One of differentially regulated proteins was identified to be HSP70. In contrast to usually reported upregulation, HSP70 was found to be downregulated in Crassostrea hongkongensis [129]. This unusual transcription pattern was attributed to prolonged exposure to heavy metals.…”

Section: Discussion: Critical Analysiscontrasting

confidence: 67%

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Synergistic Effects of Toxic Elements on Heat Shock Proteins

Kazemzad¹,

Jadoon

Mahmood

et al. 2014

BioMed Research International

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Heat shock proteins show remarkable variations in their expression levels under a variety of toxic conditions. A research span expanded over five decades has revealed their molecular characterization, gene regulation, expression patterns, vast similarity in diverse groups, and broad range of functional capabilities. Their functions include protection and tolerance against cytotoxic conditions through their molecular chaperoning activity, maintaining cytoskeleton stability, and assisting in cell signaling. However, their role as biomarkers for monitoring the environmental risk assessment is controversial due to a number of conflicting, validating, and nonvalidating reports. The current knowledge regarding the interpretation of HSPs expression levels has been discussed in the present review. The candidature of heat shock proteins as biomarkers of toxicity is thus far unreliable due to synergistic effects of toxicants and other environmental factors. The adoption of heat shock proteins as “suit of biomarkers in a set of organisms” requires further investigation.

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Section: Discussion: Critical Analysiscontrasting

confidence: 67%

“…In a recent study, Luo et al [129] have observed the effect of long-term heavy metals stress on Crassostrea hongkongensis , through a proteomic approach. Differentially expressed proteins were identified in oyster exposed to heavy metals such as zinc, copper, manganese, and lead.…”

Section: Discussion: Critical Analysismentioning

confidence: 99%

Synergistic Effects of Toxic Elements on Heat Shock Proteins

Kazemzad¹,

Jadoon

Mahmood

et al. 2014

BioMed Research International

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“…Because of their biological and ecological characteristics (e.g., capacity of bioaccumulation, worldwide distribution, abundance, and sessile way of life), bivalves are among the best bioindicator species for pollution biomonitoring (Bustamante et al, 2012;Luo et al, 2014). Oysters are filter-feeders which can bioaccumulate and therefore strongly concentrate a large variety of pollutants.…”

Section: Influence Of Lifestyle and Sampling Date On Pollutant Bioaccmentioning

confidence: 99%

Do Temporal and Spatial Parameters or Lifestyle of the Pacific Oyster Crasssostrea gigas Affect Pollutant Bioaccumulation, Offspring Development, and Tolerance to Pollutants?

et al. 2017

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This study evaluated the vulnerability of early life stages of native oysters (Crassostrea gigas) from the Arcachon Bay (SW, France) to pollutants at risk in the lagoon in particular copper and S-metolachlor. Developmental abnormalities in wild and cultivated oyster D-larvae were investigated during 2 breeding-seasons (2013 and 2014) at different sampling sites and dates. In addition, copper, and metolachlor concentrations were determined both in seawater and in mature oysters. Bioaccumulation of Cu was observed at higher levels in wild than in farmed specimens. Metolachlor was accumulated at much lower levels. After 24 h exposure, significant increases of the percentage of abnormal D-larvae were observed when exposed at 1 µg L −1 of copper or 10 ng L −1 of metolachlor in comparison with the controls whatever the date, the site, and rearing conditions of the genitors. The current study demonstrates that environmental concentrations of copper and metolachlor can induce a significant increase of developmental abnormalities in farmed and wild populations of oysters. However, no significant differences of sensitivity were observed according to temporal, spatial parameters, and lifestyle of genitors. In addition, oyster larvae obtained from the hatchery displayed the same sensitivity to pollutants as larvae from the field, demonstrating their suitability for toxicity assays and water quality monitoring.

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“…For instance, larger females have an exponentially greater gonadal mass and egg production than smaller females, yet they can be of the same age, depending on environmental factors such as temperature (Choi et al 1993, Kennedy et al 1996, Cardoso et al 2007. Finally, in populations of oysters located in regions contaminated with heavy metals, concentrations of zinc, copper, and cadmium vary with age (Mackay et al 1975), and long-term exposure to these metals can influence oyster metabolism and responses to environmental stressors (Luo et al 2014). Age-dependent changes in oxidative stress markers and cellular defense proteins can influence the effectiveness of metabolic processes (ultimately leading to senescence and death), as well as the ability of the organism to deal with environmental stressors (Ivanina et al 2008).…”

Section: Introductionmentioning

confidence: 99%

The demographic consequences of growing older and bigger in oyster populations

Moore

Lipcius

Puckett

et al. 2016

Ecological Applications

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Structured population models, particularly size- or age-structured, have a long history of informing conservation and natural resource management. While size is often easier to measure than age and is the focus of many management strategies, age-structure can have important effects on population dynamics that are not captured in size-only models. However, relatively few studies have included the simultaneous effects of both age- and size-structure. To better understand how population structure, particularly that of age and size, impacts restoration and management decisions, we developed and compared a size-structured integral projection model (IPM) and an age- and size-structured IPM, using a population of Crassostrea gigas oysters in the northeastern Pacific Ocean. We analyzed sensitivity of model results across values of local retention that give populations decreasing in size to populations increasing in size. We found that age- and size-structured models yielded the best fit to the demographic data and provided more reliable results about long-term demography. Elasticity analysis showed that population growth rate was most sensitive to changes in the survival of both large (>175 mm shell length) and small (<75 mm shell length) oysters, indicating that a maximum size limit, in addition to a minimum size limit, could be an effective strategy for maintaining a sustainable population. In contrast, the purely size-structured model did not detect the importance of large individuals. Finally, patterns in stable age and stable size distributions differed between populations decreasing in size due to limited local retention and populations increasing in size due to high local retention. These patterns can be used to determine population status and restoration success. The methodology described here provides general insight into the necessity of including both age- and size-structure into modeling frameworks when using population models to inform restoration and management decisions.

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Metal accumulation and differentially expressed proteins in gill of oyster (Crassostrea hongkongensis) exposed to long-term heavy metal-contaminated estuary

Cited by 77 publications

References 75 publications

Synergistic Effects of Toxic Elements on Heat Shock Proteins

Synergistic Effects of Toxic Elements on Heat Shock Proteins

Do Temporal and Spatial Parameters or Lifestyle of the Pacific Oyster Crasssostrea gigas Affect Pollutant Bioaccumulation, Offspring Development, and Tolerance to Pollutants?

The demographic consequences of growing older and bigger in oyster populations

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