Impacts of short-term salinity and turbidity stress on the embryonic stage of red sea bream Pagrus major

Phan, Thi Cam Tu; Manuel, Albert V.; Tsutsui, Naoaki; Yoshimatsu, Takao

doi:10.1007/s12562-019-01368-2

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…Turbidity treatments were limited to concentrations of 15 NTU, and temperature treatments to a limit of 29°C. The white kaolin clay used for the turbidity treatments is commonly used for behavioural experiments [73][74][75]. Less than 1 g of clay powder per litre of water was used and is representative of ecologically realistic conditions for these species [64,65].…”

Section: Discussionmentioning

confidence: 99%

Temperature and turbidity interact synergistically to alter anti-predator behaviour in the Trinidadian guppy

2023

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Due to climate change, freshwater habitats are facing increasing temperatures and more extreme weather that disrupts water flow. Together with eutrophication and sedimentation from farming, quarrying and urbanization, freshwaters are becoming more turbid as well as warmer. Predators and prey need to be able to respond to one another adaptively, yet how changes in temperature and turbidity interact to affect predator–prey behaviour remains unexplored. Using a fully factorial design, we tested the combined effects of increased temperature and turbidity on the behaviour of guppy shoals ( Poecilia reticulata ) in the presence of one of their natural cichlid predators, the blue acara ( Andinoacara pulcher ). Our results demonstrate that the prey and predator were in closest proximity in warmer, turbid water, with an interaction between these stressors showing a greater than additive effect. There was also an interaction between the stressors in the inter-individual distances between the prey, where shoal cohesion increased with temperature in clear water, but decreased when temperature increased in turbid water. The closer proximity to predators and reduction in shoaling in turbid, warmer water may increase the risk of predation for the guppy, suggesting that the combined effects of elevated temperature and turbidity may favour predators rather than prey.

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Section: Discussionmentioning

confidence: 99%

Temperature and turbidity interact synergistically to alter anti-predator behaviour in the Trinidadian guppy

2023

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“…Turbidity treatments were limited to concentrations of 15 NTU, and temperature treatments to a limit of 29⁰C. The white kaolin clay used for the turbidity treatments is commonly used for behavioural experiments (Meager and Utne-Palm, 2007;Ohata et al, 2011;Phan et al, 2020). Less than 1g of clay powder per litre of water was used and is representative of ecologically realistic conditions for these species (Magurran, 2005;Magurran and Phillip, 2001).…”

Section: Ethical Notementioning

confidence: 99%

Temperature and turbidity interact synergistically to alter anti-predator behaviour in the Trinidadian guppy

Zanghi

Munro

Ioannou

2023

Preprint

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Due to climate change, freshwater habitats are facing increasing temperatures and more extreme weather that disrupts water flow. Together with eutrophication and sedimentation from farming, quarrying and urbanisation, freshwaters are becoming more turbid as well as warmer. Predators and prey need to be able to respond to one another adaptively, yet how changes in temperature and turbidity interact to affect predator-prey behaviour remains unexplored. Using a fully factorial design, we tested the combined effects of increased temperature and turbidity on the behaviour of guppy shoals (Poecilia reticulata) in the presence of one of their natural cichlid predators, the blue acara (Andinoacara pulcher). Our results demonstrate that the prey and predator were in closest proximity in warmer, turbid water, with an interaction between these stressors showing a greater than additive effect. There was also an interaction between the stressors in the inter-individual distances between the prey, where shoal cohesion increased with temperature in clear water, but decreased when temperature increased in turbid water. The closer proximity to predators and reduction in shoaling in turbid, warmer water may increase the risk of predation for the guppy, suggesting that the combined effects of elevated temperature and turbidity may favour predators rather than prey.

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Turbidity effects on prey consumption and survival of larval European smelt (Osmerus eperlanus)

Illing,

Sehl,

Reiser

2024

Aquat Sci

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The anadromous European smelt (Osmerus eperlanus) plays a key role in food webs of many riverine ecosystems in Europe. However, population sizes in several German rivers (e.g. Elbe or Weser rivers) have diminished drastically over the past decade. Turbidity has been considered one of the stressors affecting the successful recruitment of European smelt, as their early life stages may be particularly sensitive to changes in the abiotic environment. In this study, we investigated whether prey consumption and survival of European smelt larvae would be negatively affected by an acute exposure to elevated turbidity. We reared the larvae in the laboratory and exposed them in four separate trials (18 to 26 days post hatch, 9.5 ± 0.8 mm standard length, mean ± SD) to six turbidity levels (0–500 NTU, nephelometric turbidity units). We found that prey uptake increased at low turbidity levels and decreased at high turbidity levels, with an optimum between 100 and 200 NTU. Survival started to decrease at turbidity levels above 300 NTU. In addition, we conducted a systematic literature analysis in which we found that prey consumption of larval and juvenile fishes had been tested across a wide range of turbidity levels, mostly using pelagic (e.g. planktonic) prey items, with more studies focusing on perciform fishes and juvenile rather than larval life stages. Our empirical findings contribute to establishing thresholds for optimal larval European smelt performance under increased turbidity and provide valuable information for developing mechanistic models that assess potential consequences for European smelt recruitment dynamics.

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Impacts of short-term salinity and turbidity stress on the embryonic stage of red sea bream Pagrus major

Cited by 6 publications

References 43 publications

Temperature and turbidity interact synergistically to alter anti-predator behaviour in the Trinidadian guppy

Temperature and turbidity interact synergistically to alter anti-predator behaviour in the Trinidadian guppy

Temperature and turbidity interact synergistically to alter anti-predator behaviour in the Trinidadian guppy

Turbidity effects on prey consumption and survival of larval European smelt (Osmerus eperlanus)

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