TOXIC EFFECTS OF GLYPHOSATE ON THE BEHAVIOUR, HAEMATOLOGY, HISTOPATHOLOGY AND GROWTH OF THE AFRICAN CATFISH, Clarias gariepinus (Burchell, 1822) JUVENILES
- Project Research
- 1-5 Chapters
- Abstract : Available
- Table of Content: Available
- Reference Style: APA
- Recommended for : Student Researchers
- NGN 3000
ABSTRACT
Fish are particularly sensitive to a wide variety of agrochemicals including glyphosate herbicide that may arise from not only deliberate discharge of these chemicals into waterways but also from approved agricultural practices. The toxic effects of glyphosate on Clarias gariepinus juveniles of mean weight 10.05 ± 1.50 g and mean length of 10.75 ± 1.80 cm were investigated for a period of 12 weeks. The concentrations of the toxicant were prepared as 0.00 (control), 39.02, 78.04, 156.09, 312.19 and 624.39 mg/L with replicates each for the acute effects of glyphosate for mortality rate and behavioural responses for 96 period hours. Behavioural, haematological, histopatological, growth and physico-chemical analysis were carried out based on standard experimental procedures. Percentage treatments from LC50 were determined as follows: 00 (control), 23, 38, 53, 68 and 83 mg/L, respectively using the LC50 of the toxicant which was 151.36 mg/L. The physical and behavioural changes of the exposed fishes occurred as the concentration increased; restlessness, uncoordinated movement, air gasping, discolouration of the skin and eventual death. The haematological study indicated a significant reduction in White Blood Cells (WBC) and Packed cell Volume (PCV) counts with increased concentrations of the toxicant. In the liver, the enlargement of the hepatocytes was related to the concentration and duration of exposure resulting in large vacuoles in the hepatocytes with pyknotic nuclei. Focal necrosis was also observed in the hepatocytes. The skin showed few atrophying mucous cells, dense inflammatory cells, necrotic epidermis. The weight and length growth occur more in the lower concentrations. The physico-chemical parameters were dose and duration dependent. From this research it was evident that glyphosate had deleterious effects on the fish exposed. Therefore, their use near fish farm or in areas close to aquatic environment should be discouraged or minimized.
Related Project Materials
EXAMINATION GRADE PURSUIT AS A DETERMINANT OF STUDENTS READING ATTITUDE IN THE TERTIARY INSTITUTIONS
Abstract
Reading is undeniably a very important part of the educational structure of Nigeria. Unfortunately, trends hav...
THE CONCEPT OF OPINION LEADERSHIP AND ITS INFLUENCE IN THE MARKETING OF FASHION PRODUCTS
ABSTRACT
This work is aimed at assessing the influence of the concept of opinion leadership on the mark...
THE INFLUENCE OF SERVANT LEADERSHIP ON EMPLOYEE SATISFACTION
THE INFLUENCE OF SERVANT LEADERSHIP ON EMPLOYEE SATISFACTION
This research investigate...
DETERMINANT OF INTERNAL CONTROL SYSTEM EFFECTIVENESS IN A MANUFACTURING COMPANY
ABSTRACT
The study sought to determine the effect of internal control system on financial performance o...
INTESTINAL PARASITES AMONG UNITY PRIMARY SCHOOL PUPILS
ABSTRACT
A study was conducted to determine the prevalence of intestinal parasites among pupils in Unity primary school...
THE ROLE OF STRATEGIC PLANNING IN ADMINISTRATIVE EFFECTIVENESS
THE ROLE OF STRATEGIC PLANNING IN ADMINISTRATIVE EFFECTIVENESS
Abstract: The objective...
EMPLOYEES’ PERCEPTION ON MOTIVATION MECHANISM IN NIGERIA PUBLIC SERVICE
ABSTRACT
The focus of this study is to examine employees’ perception on motivation mechanism in N...
ADDRESSING INDUSTRY DEMAND FOR SPECIALIZED VOCATIONAL SKILLS
ABSTRACT: This study investigates the role of vocational education in addressing industry demand for specialized skills, focusing on aligning...
ANTIFUNGAL ACTIVITY OF LOCALLY MADE SOAP ON DERMATOPHYTES ISOLATED FROM BARBING EQUIPMENT
ABSTRACT
The comparative study on the effect of the locally made black soap and Dudu osun soap on dermatophytes isolated...
IMPACT OF TRANSFORMATION AGENDA ON ECONOMIC DEVELOPMENT IN NIGERIA DURING JONATHAN ADMINISTRATION
STATEMENT OF PROBLEM
The country have being lagging behind interms of infrastructure and the management of wealth; the i...
