CJEES

Home
Peer Review
Editorial Board
Instructions
Early Access
Latest Issue
Past Issues
Contact
Impact Factor
Reject Rate

 
You are here: Home » Latest Issue » Volume 19, 2024 - Number 1 » PROLIFERATION OF THE DIATOM CYCLOTELLA MENEGHINIANA AFFECTED BY EXPOSURE TO LEAD, Carpathian Journal of Earth and Environmental Sciences February 2024, Vol. 19, No. 1, p. 51 – 60; DOI:10.26471/cjees/2024/019/279


« Back

Van-Tu NGUYEN1, Bao-Khoa DUONG2,3, Duc-Hung NGUYEN1, Misigo W.S. ANGALIKA4, Heritier A. MUFWANKOLO4, Tan-Duc NGUYEN4,* & Thanh-Son DAO2,3,**
1Faculty of Natural Sciences Education, Saigon University, Ho Chi Minh City, Vietnam
2Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City, Vietnam
3Vietnam National University, Ho Chi Minh City, Vietnam 4Graduate School of Engineering, Nagasaki University, Nagasaki City, Japan *Corresponding author: tanducnguyen.ecotox@yahoo.com **Corresponding author: dao.son@hcmut.edu.vn


PROLIFERATION OF THE DIATOM CYCLOTELLA MENEGHINIANA AFFECTED BY EXPOSURE TO LEAD, Carpathian Journal of Earth and Environmental Sciences February 2024, Vol. 19, No. 1, p. 51 – 60; DOI:10.26471/cjees/2024/019/279

Full text

Abstract:

Elevated levels of pollutants, including heavy metals, resulting from human activities, have raised concerns regarding their adverse impacts on natural ecosystems. Among these, aquatic organisms, particularly non-target microalgae, bear substantial consequences from such contaminants. This study endeavored to evaluate the impact of the heavy metal lead (Pb) at concentrations of 2.5, 25, and 250 μg L−1 on the growth and lipid content of the diatom Cyclotella meneghiniana in a 14-day toxicity test conducted under controlled laboratory conditions. The findings indicate that lower Pb concentrations (2.5 and 25 μg L−1 ) fostered algal proliferation, whereas exposure to 250 μg L−1 resulted in complete inhibition in two distinct endpoints. Additionally, no significant fluctuations in algal lipid content were discernible between exposure to 2.5 and 25 μg Pb L−1 and the control group. This study stands as a pioneering effort in unveiling the toxicity of Pb on C. meneghiniana, shedding light on the species’ susceptibility to this heavy metal and underscoring the necessity of incorporating this species into ongoing ecological risk assessments of Pb.



Keyword: heavy metals, stimulus effect, lipid content, algal density, ecological risk assessment


(c) 2006 - 2024 , Publisher-Asociația Carpatică de Mediu și Științele Pământului (Carpathian Association of Environment and Earth Sciences)