Impact of environmental factors changes induced by marine heatwaves and heavy precipitation on antibiotic toxicity to Isochrysis galbana : Implications for climate change adaptation

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Article number116453
Journal / PublicationMarine Pollution Bulletin
Volume203
Online published11 May 2024
Publication statusPublished - Jun 2024

Link(s)

Abstract

Isochrysis galbana, a crucial primary producer and food source in aquatic ecosystems, faces increasing challenges from climate change and emerging contaminants like antibiotics. This study investigates the combined effects of sudden temperature increase (representing marine heatwaves) and rapid salinity change (representing extreme precipitation events) on the toxicity of tetracycline (TC) and oxytetracycline (OTC) to I. galbana. Short-term experiments reveal heightened antibiotic toxicity at 31 °C or salinities of 18 PSU, surpassing algal tolerance limits. Long-term tests show decreased inhibition of algal growth on day 9, indicating algal adaptation to the environment. Analyses of photosynthesis II efficiency, pigment content, and macromolecular composition support this, suggesting adaptation mechanism activation. While algae acclimate to the environment during long-term antibiotic exposure, extreme weather conditions may compromise this adaptation. These findings have implications for managing antibiotics in aquatic environments under climate change. © 2024 The Authors.

Research Area(s)

  • Antibiotics, Environmentally relevant concentrations, Heat wave, Heavy precipitation, Marine algae

Citation Format(s)

Impact of environmental factors changes induced by marine heatwaves and heavy precipitation on antibiotic toxicity to Isochrysis galbana: Implications for climate change adaptation. / Wat, Canace C.Y.; Xin, Xiaying; Lai, Racliffe W.S. et al.
In: Marine Pollution Bulletin, Vol. 203, 116453, 06.2024.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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