Behavioral responses of copepod Calanus sinicus to harmful algae Prorocentrum donghaiense and Skeletonema costatum

Marine Environmental Research, Journal Year: 2025, Volume and Issue: 205, P. 107007 - 107007

Published: Feb. 8, 2025

Language: Английский

Zooplankton as a model to study the effects of anthropogenic sounds on aquatic ecosystems

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 928, P. 172489 - 172489

Published: April 14, 2024

There is a growing interest in the impact of acoustic pollution on aquatic ecosystems. Currently, research has primarily focused hearing species, particularly fishes and mammals. However, species from lower trophic levels, including many invertebrates, are less studied despite their ecological significance. Among these taxa, studies examining effects sound holozooplankton extremely rare. This literature review examines both marine freshwater zooplankton. It highlights two differences: few used organisms types source. Marine focus very intense acute copepods, while chronic cladocerans. But, both, various negative reported. The remain largely unknown, although previous have shown that zooplankton can detect vibrations using mechanoreceptors. perception environment be affected by sounds, potentially causing stress. Limited suggests may affect physiology, behaviour, fitness Following this review, I highlight potential to use methods ecology, ecotoxicology, parasitology study at individual level, changes development, survival, behaviour. Responses sound, which could alter interactions population dynamics, expected larger-scale implications with bottom-up effects, such as food web dynamics ecosystem functioning. To improve effect better biological models bioindicators, researchers need understand how they perceive environment. Consequently, an important challenge measurement particle motion establish useable dose-response relationships soundscapes.

Language: Английский

Low‐frequency noise affects development and movement patterns of a calanoid copepod

Limnology and Oceanography, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 3, 2024

Abstract Anthropogenic stressors are omnipresent in marine environments and interfere with organisms of all sizes, from large whales to small organisms. We investigated potential interactive multistressor effects increased temperature chronic low‐frequency sound on the development movement patterns calanoid copepod Acartia tonsa , a model species for zooplankton. Copepods were reared while exposed around 15 22 dB re 1 μ Pa 2 Hz −1 above control pressure levels at frequencies between 110 120 Hz, 21°C (increased temperature) 18°C (control temperature). For each scenario, we assessed after‐incubation rate, stage distribution, patterns. found that fewer copepods reached developmental stages copepodites IV VI conditions, even though warmer conditions rate. By using high‐speed videography both observed showed more escape behaviors (drops) feeding‐associated (helical swimming) when (~ 42 higher than normal 142 Hz). added did not reverse these trends despite absence their feeding environment. These significant behavioral changes suggest detrimental negative, life‐long, consequences sound.

Language: Английский