TY - JOUR
T1 - Effects of long-term chlorpyrifos exposure on mortality and reproductive tissues of Banded Gourami (Trichogaster fasciata)
AU - Sumon, Kizar Ahmed
AU - Yesmin, Most Farzana
AU - Van den Brink, Paul J.
AU - Bosma, Roel H.
AU - Peeters, Edwin T.H.M.
AU - Rashid, Harunur
PY - 2019/7
Y1 - 2019/7
N2 - This study assessed the long-term toxicity of chlorpyrifos on survival and reproduction of Banded Gourami by using mortality, gonado-somatic index (GSI) and histopathological observations as endpoints. Adult fish were exposed to five different concentrations of chlorpyrifos (0, 15, 50, 150, 500 µg/L) in 15 PVC tanks for 15, 30, 45, 60 and 75 days. Results showed that all male and female fish died after 15 days of 500 µg/L chlorpyrifos exposure. No consistent significant effect was observed for both male and female GSI. Furthermore, results showed dose- and time-dependent histopathological alterations for both ovary and testes. The 60-d No Observed Effect Concentration (NOEC) for most histopathological alterations of Banded Gourami ovary and testes was 50 μg/L, while 60-d NOEC for mortality of both male and female fish was < 15 μg/L. The results show that the long-term exposure to chlorpyrifos not only affect the reproductive tissues of Banded Gourami at exposure concentrations but also cause their mortality. Future studies should evaluate effects at lower concentrations.
AB - This study assessed the long-term toxicity of chlorpyrifos on survival and reproduction of Banded Gourami by using mortality, gonado-somatic index (GSI) and histopathological observations as endpoints. Adult fish were exposed to five different concentrations of chlorpyrifos (0, 15, 50, 150, 500 µg/L) in 15 PVC tanks for 15, 30, 45, 60 and 75 days. Results showed that all male and female fish died after 15 days of 500 µg/L chlorpyrifos exposure. No consistent significant effect was observed for both male and female GSI. Furthermore, results showed dose- and time-dependent histopathological alterations for both ovary and testes. The 60-d No Observed Effect Concentration (NOEC) for most histopathological alterations of Banded Gourami ovary and testes was 50 μg/L, while 60-d NOEC for mortality of both male and female fish was < 15 μg/L. The results show that the long-term exposure to chlorpyrifos not only affect the reproductive tissues of Banded Gourami at exposure concentrations but also cause their mortality. Future studies should evaluate effects at lower concentrations.
KW - Aquatic environment
KW - fish
KW - histopathology
KW - organophosphate pesticide
KW - reproductive toxicity
UR - https://doi.org/10.6084/m9.figshare.8138216
U2 - 10.1080/03601234.2019.1614399
DO - 10.1080/03601234.2019.1614399
M3 - Article
AN - SCOPUS:85066051722
VL - 54
SP - 549
EP - 559
JO - Journal of Environmental Science and Health. Part B, Pesticides Food Contaminants, and agricultural wastes
JF - Journal of Environmental Science and Health. Part B, Pesticides Food Contaminants, and agricultural wastes
SN - 0360-1234
IS - 7
ER -