Asian Journal of Environment & Ecology https://journalajee.com/index.php/AJEE <p style="text-align: justify;"><strong>Asian Journal of Environment &amp; Ecology (ISSN: 2456-690X)</strong> aims to publish high quality papers (<a href="/index.php/AJEE/general-guideline-for-authors">Click here for Types of paper</a>) in all areas of ‘Environment and Ecology’. This journal facilitates the research and aims to publish papers as long as they are technically correct, scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> SCIENCEDOMAIN international en-US Asian Journal of Environment & Ecology 2456-690X Protective Effect of Vitamin E on Potassium Dichromate-induced Haematoxicity and Oxidative Stress in African Catfish (Clarias gariepinus) https://journalajee.com/index.php/AJEE/article/view/30177 <p>Effect of potassium dichromate was studied experimentally in African Catfish (<em>Clarias gariepinus</em>) with and without vitamin E in induced haematoxicity and oxidative stress. Blood samples were collected for haematology and plasma biochemical parameters while gills, liver and kidney samples were collected for evaluation of markers of oxidative stress. Exposure to potassium dichromate led to a significant decrease in PCV, RBC, haemoglobin concentration, MCV, MCH and total WBC when compared with the unexposed &nbsp;&nbsp;&nbsp;&nbsp;control and those fed with vitamin E-supplemented feed. Nephrotoxicity was also observed as evidenced by increases in plasma creatinine levels. Exposure to potassium dichromate also led to increased oxidative stress as the concentrations of antioxidant endogenous enzymes - GPx, GST and GSH were depleted while potentiating lipid peroxidation and hydroxyl radical generation. The changes in the haematological, biochemical and antioxidant parameters were restored in the fish fed with vitamin E-supplemented feed. The study showed exposure to potassium dichromate to be toxic to African catfish, causing anaemia and kidney damage with free radical generation and depletion of GSH and other antioxidant defence system but the toxic effect can be minimised along with weight gain in fish supplemented by vitamin – E in aquaculture.</p> O. I. Azeez S. F. Braimah ##submission.copyrightStatement## 2020-08-08 2020-08-08 18 31 10.9734/ajee/2020/v13i230177 Determination of Arsenic (As) and Iron (Fe) Concentration in Ground Water and Associated Health Risk by Arsenic Contamination in Singair Upazila, Manikganj District, Bangladesh https://journalajee.com/index.php/AJEE/article/view/30178 <p>Contamination of drinking water by Arsenic (As) &amp; Iron (Fe) is nowadays appeared as a big concern for public health and environment as well. Immoderate and continued revelation of inorganic arsenic along with drinking water is triggering arsenicosis. High Fe and As concentration found in the study area is also appeared as very challenging to those people who are consuming the water on regular basis and they may confront to a high health risk. This study is conducted to determine the concentration of Fe and As in ground tube-well containing possible health risk in Bangladesh which examines the ground water As and Fe scenario of Singair Upazila, Manikganj district. Total 40 samples were collected from the study area. As and Fe were analyzed using Atomic Absorption Spectrophotometer (AAS). The study found As concentration ranged from 0.0011 to 0.0858 mg/L with the mean concentration as 0.04186 mg/L. Concentration of Fe was found 0.175 to 13.865 mg/L with the mean concentration as 3.600 mg/L whereas WHO standard level is 0.01 mg/L for As and 0.3 mg/l for Fe. It was also noticed that As and Fe concentration in shallow tube-well was relatively high than that in deep tube-well and a strong correlation between As and Fe was marked in the ground water. Therefore, to cope with this challenge, people should look for other sources or relocate the tube-well or treat the water for drinking and other everyday purposes.</p> Atkeeya Tasneem Tanvir Ahmed Md. Khabir Uddin ##submission.copyrightStatement## 2020-08-10 2020-08-10 32 41 10.9734/ajee/2020/v13i230178 The Freshwater Mollusk Dreissena polymorpha (Zebra Mussel) - A Review: Living, Prospects and Jeopardies https://journalajee.com/index.php/AJEE/article/view/30176 <p>This review paper aims to address the topic of the living, prospects as well as jeopardies of the invasive Zebra Mussel. Broad literature reviews have been taken place to gather as many facts on this species as possible to summon all the most significant information up in one paper to be available for everyone. To get a better understanding of freshwater mussels in general, a short review of freshwater mussel diversity in America has been written also. The review paper focuses especially on living, prospects, and jeopardies in North America. The review revealed, freshwater mussels to be of practical importance and of great primeness for scientific research due to their unique life cycle. Especially the freshwater mollusk <em>Dreissena polymorpha</em> (Dreissenidae), colloquial known as the zebra mussel draws interest due to the mollusks’ invasive character and their tremendous filtering capacity. Once originated from the Ponto-Caspian region and currently present in 33 European Countries and 33 states of North America the freshwater bivalve draws interest all over the world. Their larval stage allows broad invasions of aquatic systems. Even though they can both harm their habitat as well as other organisms living in it, <em>Dreissena polymorpha</em> enormous filtering capacity can be utilized effectively if managed right. However, a lack of natural enemies and environmentally friendly pesticides makes control of <em>Dreissena polymorpha</em> in open water impossible.</p> Klaus Dölle David E. Kurzmann ##submission.copyrightStatement## 2020-07-29 2020-07-29 1 17 10.9734/ajee/2020/v13i230176