No Evidence for an Effect of Chronic Boat Noise on the Fitness of Reared Water Fleas

Prosnier, Loïc; Rojas, Emilie; Médoc, Vincent

doi:10.1007/978-3-031-10417-6_129-2

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“…For instance, in a freshwater community, unpredictable noise should affect more fishes, at top trophic levels, than invertebrates. But if there are various effects within zooplankton community, as expected, leading to bottom-up effects (Rojas, Desjonquères, et al, 2023; Rojas, Gouret, et al, 2023). Zooplankton is highly diverse and predatory species might react differently than their zooplanktonic prey.…”

Section: Discussionmentioning

confidence: 72%

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No evidence for an effect of chronic boat noise on the fitness of reared water fleas

Prosnier

Rojas

Médoc

2022

Preprint

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Ecotoxicological studies mainly focus on chemical pollution, however, since past decades, there has been a growing interest for the acoustic pollution. Previous studies on underwater acoustic pollution showed that noise affects vertebrates' behaviour, like fish and marine mammals. However, little is known about other organisms. Consequently, we studied important lacking aspects, well known with chemical pollution: the effect on a key zooplankton species (used as bioindicator) and the effect on fitness (survival and fecundity). We exposed isolated water fleas, Daphnia magna, to chronic boat noise or to a silence broadcasted as control, from birth to death. We measured effects on lifespan and clonal offspring production (e.g., clutch size, number of produced offspring along life). We did not observe any effect of the chronic boat noise exposition on Daphnia's fitness. These results are consistent with results on previous acute noise exposure, but also opposite to other ones found with acute and chronic noise effect. Thus, we discuss how the noise structure and temporal pattern could affect its impacts on aquatic organisms. Our work highlights that noise pollution should be integrated in ecotoxicological studies, but also that some particular aspects of this pollutant should be considered differently than chemical pollutants.

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Section: Discussionmentioning

confidence: 72%

“…Note that this article has been published as a chapter of The effects of noise on aquatic life: Principles and Practical Considerations (Popper et al, 2023). DOI: 10.1007/978-3-031-10417-6_129-2 (Prosnier, Rojas, et al, 2023)…”

Section: Acknowledgmentsmentioning

confidence: 99%