Advertisement

Topics

Selenium and mercury in freshwater fish muscle tissue and otoliths: a comparative analysis.

08:00 EDT 1st April 2019 | BioPortfolio

Summary of "Selenium and mercury in freshwater fish muscle tissue and otoliths: a comparative analysis."

Evaluating potential ecological and human health risks of exposure to bioaccumulative trace elements is typically implemented using analysis of tissue samples. Increasingly, the microchemistry of fish calcified structures is used to elucidate the lifetime exposure to trace elements. In the present study we measured total Hg (THg), methylmercury (MeHg) and selenium (Se) in muscle tissue and otolith samples from 12 species of fish collected at reference sites and sites influenced by power plant wastewater. Muscle tissue concentrations of Se were sensitive to recent wastewater exposure magnitude, stream type, trophic level, and species (P < 0.001). For Hg, concentrations in tissue and otoliths were affected only by trophic level and species. Levels of THg and Se, in muscle and otolith samples,were positively correlated for those species with a robust sample size. Some individual fish from three species (channel catfish, hybrid striped bass, freshwater drum) showed significantly increasing or decreasing lifetime concentrations of either THg or Se in otolith samples. Multiple regression analysis indicated that, for bluegill, muscle Se concentrations could be best explained using water concentrations of Se, sulfate, and molybdenum (r = 0.87; P < 0.001). Due to the increased cost and specialized sample processing requirements of analyzing trace elements in otolith structures, it may be prudent to limit these analyses to those species where insights into temporal trends are sought or where evidence indicates that fish move into, or out of, contaminated water bodies. This article is protected by copyright. All rights reserved.

Affiliation

Journal Details

This article was published in the following journal.

Name: Environmental toxicology and chemistry
ISSN: 1552-8618
Pages:

Links

DeepDyve research library

PubMed Articles [12530 Associated PubMed Articles listed on BioPortfolio]

Simultaneous determination of mercury and selenium in fish by CVG AFS.

In this work, an analytical method was proposed for the simultaneous determination of mercury and selenium in fish samples using Atomic Fluorescence Spectrometry (AFS). Multivariate designs were perfo...

Selenium-Mercury Balance in Commercial Fish Species from the Turkish Waters.

The interactions between selenium (Se) and mercury (Hg) were assessed in order to interpret public health risk, associated with dietary mercury exposure due to fish consumption. For this purpose, the ...

Association of blood mercury levels during pregnancy with infant birth size by blood selenium levels in the Japan Environment and Children's Study: A prospective birth cohort.

It is necessary to determine whether there are adverse health effects of prenatal exposure to long-term, low levels of mercury and selenium. However, there are limited that reports on the association ...

Species and correlations between selenium and mercury in fishpond ecosystems.

The chemical species and contents of selenium and mercury in water, sediments, and crucian carps collected from three wild and three aquaculture fishponds in Tianjin, China, were determined, and the i...

Selenium Functionalized Metal-Organic Framework MIL-101 for Efficient and Permanent Sequestration of Mercury.

Abatement of mercury emission from coal-fired power plants remains a serious task for public health and environmental societies. Selenium functionalized metal-organic framework MIL-101 (Se/MIL-101) wa...

Clinical Trials [7092 Associated Clinical Trials listed on BioPortfolio]

Healthful Seafood Consumption for Sensitive Populations

Fish can provide pregnant women with omega-3 fatty acids for fetal brain development but some fish contains high levels of mercury which is detrimental to fetal brain development. The hypo...

Optimization of Selenoprotein P in Chinese Subjects

The purpose of this study is to determine the amount of selenium as selenomethionine that is required to optimize selenoprotein P in selenium-deficient Chinese subjects

Selenium and Prostate Cancer: Clinical Trial on Availability to Prostate Tissue and Effects on Gene Expression

The aim of this study is to determine whether selenium supplementation leads to changes in selenium levels and gene expression profiles in prostate tissue.

Selenium Supplementation of Patients With Cirrhosis

This study is being conducted to determine if patients with cirrhosis (liver disease) are selenium deficient. The effect of supplementation with two chemical forms of selenium on plasma se...

Selenium Supplementation of Patients With Cirrhosis

The purpose of this study is to determine whether patients with liver cirrhosis can improve their selenium nutritional status by taking supplemental selenium.

Medical and Biotech [MESH] Definitions

Diseases of freshwater, marine, hatchery or aquarium fish. This term includes diseases of both teleosts (true fish) and elasmobranchs (sharks, rays and skates).

A diverse genus of minute freshwater CRUSTACEA, of the suborder CLADOCERA. They are a major food source for both young and adult freshwater fish.

A selenium compound used as a source of SELENIUM, especially for patients that develop selenium deficiency following prolonged PARENTERAL NUTRITION.

Unstable isotopes of selenium that decay or disintegrate emitting radiation. Se atoms with atomic weights 70-73, 75, 79, 81, and 83-85 are radioactive selenium isotopes.

An order of fish comprising salmons, trouts, whitefish, graylings, and other families. They are both marine and freshwater fish, found in all oceans and are quite numerous in the Northern Hemisphere. (From Nelson: Fishes of the World)

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topic

Rheumatology
Arthritis Fibromyalgia Gout Lupus Rheumatic Rheumatology is the medical specialty concerned with the diagnosis and management of disease involving joints, tendons, muscles, ligaments and associated structures (Oxford Medical Diction...


Searches Linking to this Article