merged

TOXICITY EVALUATION OF CADMIUM ON EMBRYOGENESIS OF
Anabas testudineus
FATIN LIYANA MOHAMMAD SHARIFF
SUPERVISOR: DR. SUVIK ASSAW
CO-SUPERVISOR: DR. ONG MENG CHUAN
BACHELOR OF SCIENCE (MARINE BIOLOGY)
SCHOOL OF MARINE AND ENVIRONMENTAL SCIENCES
Heavy metal pollution become a serious problem due to the increase if industrialization
and urbanization. Its created a serious threat to all kinds of life especially to aquatic
organisms. Fish eggs toxicity is important due to its sensitivity to environmental
changes, including toxic substances compared to juveniles and adults. The purpose of
this study was to determine the effects of heavy metal cadmium on embryogenesis of
Anabas testudineus. The evaluation of cadmium toxicity was conducted according to
OECD guideline 236 where fertilized eggs were exposed to different concentration of
cadmium ranging from 4.34 ppm to 278 ppm. Toxicity parameters that were evaluated
includes determination of 50% lethal concentration (LC50) value, mortality and
embryo deformities. Results revealed mortalities of the eggs and coagulation of the
eggs occurred after exposure to all cadmium concentration tested. As conclusion,
cadmium could cause severe effect on the embryogenesis of A. testudineus.
1815 | UMT UNDERGRADUATE RESEARCH DAY 2018