Impact of Certain Heavy Metals on Histology and Physiology of Fishes: Interpretative Study
Journal Title: Annual Research & Review in Biology - Year 2017, Vol 19, Issue 6
Abstract
Heavy metals, as essential or non-essential ones, are present in aquatic systems at different levels. The over limited concentration of metals has a negative effects as physiological, histological and morphological patterns. The levels of contaminants in fish are of particular interest because of potential risk to human consuming them. Heavy metals bring about their effects as single or mixture on organs or tissues of fish. The influence starts at cellular or molecular level, then being at population level, particularly through early stages of development, and may result in species extinction, due to tendency towards accumulation and reduced biodegradation. The liver, gills and kidney seem to be the most interested organs included in current studies due to their sensitized feature towards metal impact. Fishes could be employed as biomarker indicator for environmental contamination, in particular with long term monitoring, and with trace levels of pollutants. Overlap between different factors, along with integrated responses must be considered in determination of heavy metals impact, in complementary of water quality parameters; and so, standardized methods being necessary for comparison among variable results obtained. This study is an interpretative effort of some aspects included in toxicity of five heavy metals for fish species.
Authors and Affiliations
Basim M. Jasim
Keywords
Related Articles
- EP ID EP314978
- DOI 10.9734/ARRB/2017/36911
- Views 73
- Downloads 0
On the Choice of Linear Regression Algorithms for Biological and Ecological Applications
Model II regression (i.e. minimizing residuals obliquely) is the adequate alternative to Model I regression by Ordinary Least Squares (i.e. minimizing residuals vertically) given the absence of well-established dependenc...
CTLA4 Expression in Childhood Asthma and the Effect of Treatment with Inhaled Corticosteroid and Leukotriene Receptor Antagonist
Aims: Cytotoxic T lymphocyte antigen 4 (CTLA4), an important regulatory molecule in the process of antigen presentation, was previously associated with the pathogenesis of autoimmune diseases and asthma. Therefore, the g...
Molecular Characterization of Penicillium Isolates Using Rapd Technique
Molecular analyses were performed on 14 isolates of Penicillium species. The Penicillium isolates examined were collected from different localities and habitats of Jeddah, Saudi Arabia and maintained on Czapek Dox's and...
Assessing the Incidences of Late Blight Disease on Irish Potato Varieties in Kisii County, Kenya
Background: Late Blight Disease, caused by the fungal pathogen, Phytophthora infestans, is a major constraint of Irish potato production in Kenya. The disease can destroy a crop, causing up to 100% yield loss. Small scal...
The Protective Effects of Safranal against Diabetes Mellitus and Its Complications
The increasing incidence of diabetes mellitus in all over the world is considered as a serious threat for human health. Oxidative stress is responsible for occurrence of diabetes by generation of oxygen free-radical, gly...