TOXICITY OF ATRAZINE (HERBICIDE) TO JUVENILES OF THE AFRICAN CATFISH, CLARIAS GARIEPINUS (BÜRCHELL, 1822)

A THESIS SUBMITTED TO THE SCHOOL OF POSTGRADUATE STUDIES, AHMADU BELLO UNIVERSITY, ZARIA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE AWARD OF MASTER DEGREE IN BIOLOGY DEPARTMENT OF BIOLOGY FACULTY OF LIFE SCIENCES AHMADU BELLO UNIVERSITY, ZARIA, NIGERIA