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Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida

Seaweeds are some of the principal primary producers of marine environments, and they are important ecological elements of coastal ecosystems. The effects of harmful chemicals on seaweeds may adversely affect coastal ecosystems, hence we aimed to develop a new phytotoxicity test using the gametophyt...

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Main Authors: Nomura, M., Okamura, H., Horie, Y., Yap, C.K., Emmanouil, C., Uwai, S., Kawai, H.
Format: Article
Published: Elsevier BV 2023
Online Access:http://psasir.upm.edu.my/id/eprint/107562/
https://linkinghub.elsevier.com/retrieve/pii/S0045653522036347
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spelling my.upm.eprints.1075622024-07-29T03:46:54Z http://psasir.upm.edu.my/id/eprint/107562/ Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida Nomura, M. Okamura, H. Horie, Y. Yap, C.K. Emmanouil, C. Uwai, S. Kawai, H. Seaweeds are some of the principal primary producers of marine environments, and they are important ecological elements of coastal ecosystems. The effects of harmful chemicals on seaweeds may adversely affect coastal ecosystems, hence we aimed to develop a new phytotoxicity test using the gametophytes of a common temperate kelp species, Undaria pinnatifida (KU-1630), for the widely used antifouling chemical substances Cybutryne, Diuron, Cu2+, and Zn2+. Toxicity to gametophytes of U. pinnatifida was assessed by comparing the relative growth rate (RGR) at the logarithmic growth phase. Fragmentation method, initial algal biomass, photon irradiance, and adhesive period were investigated for developing optimal test conditions. Cybutryne exposure tests were performed with seven replicates and control, the RGR ranging from 0.17 to 0.19, while mean 7-day EC50 and no observed effect concentration (NOEC) were 5.1 ¼g/L and 1.8 ¼g/L, respectively. The 7-day EC50 for other antifoulants was 14 ¼g/L for Diuron, 17 ¼g/L for Cu2+, and 1500 ¼g/L for Zn2+. This test method demonstrated high sensitivity and reproducibility, and it may be added to the routine methods used for toxicity evaluation of hazardous chemicals. Elsevier BV 2023-01 Article PeerReviewed Nomura, M. and Okamura, H. and Horie, Y. and Yap, C.K. and Emmanouil, C. and Uwai, S. and Kawai, H. (2023) Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida. Chemosphere, 312. art. no. 137141. ISSN 0045-6535; ESSN: 1879-1298 https://linkinghub.elsevier.com/retrieve/pii/S0045653522036347 10.1016/j.chemosphere.2022.137141
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
description Seaweeds are some of the principal primary producers of marine environments, and they are important ecological elements of coastal ecosystems. The effects of harmful chemicals on seaweeds may adversely affect coastal ecosystems, hence we aimed to develop a new phytotoxicity test using the gametophytes of a common temperate kelp species, Undaria pinnatifida (KU-1630), for the widely used antifouling chemical substances Cybutryne, Diuron, Cu2+, and Zn2+. Toxicity to gametophytes of U. pinnatifida was assessed by comparing the relative growth rate (RGR) at the logarithmic growth phase. Fragmentation method, initial algal biomass, photon irradiance, and adhesive period were investigated for developing optimal test conditions. Cybutryne exposure tests were performed with seven replicates and control, the RGR ranging from 0.17 to 0.19, while mean 7-day EC50 and no observed effect concentration (NOEC) were 5.1 ¼g/L and 1.8 ¼g/L, respectively. The 7-day EC50 for other antifoulants was 14 ¼g/L for Diuron, 17 ¼g/L for Cu2+, and 1500 ¼g/L for Zn2+. This test method demonstrated high sensitivity and reproducibility, and it may be added to the routine methods used for toxicity evaluation of hazardous chemicals.
format Article
author Nomura, M.
Okamura, H.
Horie, Y.
Yap, C.K.
Emmanouil, C.
Uwai, S.
Kawai, H.
spellingShingle Nomura, M.
Okamura, H.
Horie, Y.
Yap, C.K.
Emmanouil, C.
Uwai, S.
Kawai, H.
Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida
author_facet Nomura, M.
Okamura, H.
Horie, Y.
Yap, C.K.
Emmanouil, C.
Uwai, S.
Kawai, H.
author_sort Nomura, M.
title Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida
title_short Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida
title_full Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida
title_fullStr Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida
title_full_unstemmed Effects of antifouling compounds on the growth of macroalgae Undaria pinnatifida
title_sort effects of antifouling compounds on the growth of macroalgae undaria pinnatifida
publisher Elsevier BV
publishDate 2023
url http://psasir.upm.edu.my/id/eprint/107562/
https://linkinghub.elsevier.com/retrieve/pii/S0045653522036347
_version_ 1806415619759800320
score 13.211869

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