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Brief Report

A Rapid Bioassay Test for Assessing Environmental Contamination Using the Marine Sedentary Polychaete Hydroides elegans

1
Postgraduate and Research Department of Zoology, Pachaiyappa’s College for Men, Chennai 600 030, India
2
eProov Assessment Solution PVT Limited, Chennai 600 035, India
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Meilin Wu, Hui Zhao and Dilip Kumar Jha
Water 2022, 14(11), 1713; https://doi.org/10.3390/w14111713
Received: 13 January 2022 / Revised: 5 March 2022 / Accepted: 14 March 2022 / Published: 26 May 2022
To investigate the impact of environmental contaminants on the early life stages of the marine polychaetae Hydroides elegans, a toxicity test was designed. In our previous study, we reported gametes and embryos of H. elegans were sensitive to heavy metal pollution and effluents. In continuation of this, we used H. elegans gametes to assess the water quality of samples taken along the southeast coast of India. The samples were collected from five different locations of the Chennai coast (Muttu Kadu, Neelangarai, Marina, Royapuram, and Ennore), and two different bioassay toxicity tests were performed. Sperm and eggs were pre-exposed to water samples taken from different locations to assess the water quality. Water samples collected from Ennore station and the Royapuram fish landing center were found to be more polluted than those collected from other locations. Sperm were shown to be more sensitive than eggs. The different morphological effects produced by water samples reflected the defects in the early differentiation of embryonic cells. Since fertilization can be inhibited in the presence of any xenobiotic, both fertilization and early development could be used as a biological indicator for a rapid bioassay to monitor marine pollution. The percentage of successful fertilization and early development was comparatively higher at the reference site (Neelangarai) and in the seawater samples collected from Marina. The physicochemical characteristics of the seawater from these sampling stations corroborated the findings of this investigation. Our results showed that H. elegans gametes were highly sensitive to any contaminant present in the seawater, and confirmed previous findings that this polychaetae can be routinely used as a test organism for ecotoxicological bioassays in tropical and subtropical regions. View Full-Text
Keywords: rapid bioassay; gametes; embryos; Hydroides elegans rapid bioassay; gametes; embryos; Hydroides elegans
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MDPI and ACS Style

Sivakumar, P.; Srinivasan, G.; Janardhanam, M.; Sivakumar, R.; Niranjani Marcus, P.; Balasubramaniam, S.; Singaram, G.; Harikrishnan, T. A Rapid Bioassay Test for Assessing Environmental Contamination Using the Marine Sedentary Polychaete Hydroides elegans. Water 2022, 14, 1713. https://doi.org/10.3390/w14111713

AMA Style

Sivakumar P, Srinivasan G, Janardhanam M, Sivakumar R, Niranjani Marcus P, Balasubramaniam S, Singaram G, Harikrishnan T. A Rapid Bioassay Test for Assessing Environmental Contamination Using the Marine Sedentary Polychaete Hydroides elegans. Water. 2022; 14(11):1713. https://doi.org/10.3390/w14111713

Chicago/Turabian Style

Sivakumar, Priya, Gomathi Srinivasan, Madhuvandhi Janardhanam, Rekha Sivakumar, Priscilla Niranjani Marcus, Sujatha Balasubramaniam, Gopalakrishnan Singaram, and Thilagam Harikrishnan. 2022. "A Rapid Bioassay Test for Assessing Environmental Contamination Using the Marine Sedentary Polychaete Hydroides elegans" Water 14, no. 11: 1713. https://doi.org/10.3390/w14111713

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