Macro-Zooplankton Abundance in Relation to Metal Accumulation and Water Quality in Truc Bach Lake

Pham, Hong Thi; Dinh, Khuong Van; Tien, Duc A.; Le, Ha Thi Thu; Ninh, Thu Thi; Hoang, Hong Hai

doi:10.15625/2525-2518/58/3a/14280

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…The Pb concentration of 50 μg/L is the maximal concentration allowed for surface freshwater in Vietnam . The temperature range of 25–28 °C is typical for small eutrophic lakes, as reported by Pham et al Predator cues were fish kairomones collected from the rearing water of climbing perch (Anabas testudineus). Predator cues induced nonconsumptive effects on M.…”

Section: Methodsmentioning

confidence: 92%

Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

Pham

Dinh

Nguyen

et al. 2020

Environ. Sci. Technol.

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A massive challenge in ecotoxicology is assessing how the interaction of contaminants, climate change, and biotic stressors shapes the structure and functions of natural populations. Furthermore, it is not known whether contemporary evolutionary responses to multiple stressors across multigenerations may alter the interaction of these stressors. To address these issues, we exposed Moina dubia to lead (Pb, 50 μg/L) under two temperatures (25 and 28 °C) with/without predator cues from climbing perch (Anabas testudineus) for 11 generations (F1–F11). We assessed changes in M. dubia fitness, including development time, adult size, lifespan, fecundity, and neonate production. We found strong negative effects of Pb, elevated temperature, and predator cues on the fitness of M. dubia. Strikingly, Pb-induced reduction in the performance of M. dubia was stronger at 25 °C and in the absence of predator cues. The individual and interactive effects of Pb, temperature, and predator cues on M. dubia were stronger across F1–F9 and generally leveled off in F10–F11. Our results highlight the high vulnerability of M. dubia to multiple stressors, thus weakening top-down control on algal blooms in eutrophic lakes. Our study underscores the importance of integrating evolutionary responses in realistic ecotoxicological risk assessments of contaminants interacting with climatic and biotic stressors.

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Section: Methodsmentioning

confidence: 92%

Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

Pham

Dinh

Nguyen

et al. 2020

Environ. Sci. Technol.

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“…The pH was deviated from neutral to slightly base (7.3 -8.3). Aquatic organizations would get troubles when living in permanently alkaline environments [21]. Many factors would affect the change in the pH of aquatic bodies first.…”

Section: Sampling Timementioning

confidence: 99%

COMBINATION IMPACT OF pH AND TEMPERATURE ON THE TOXICITY OF LEAD ON ZOOPLANKTON IN THE CONTEXT OF GLOBAL WARMING

Hoang

Pham

Nguyen

et al. 2020

JST

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Heavy metal pollution in urban lakes of Hanoi has become one of the major environmental issues in the last decades. Research on the toxicity of Pb is necessary due to the extent of its harm to aquatic ecosystems. The toxicity of Pb to aquatic organisms (EC50 values) depends on different environmental conditions. The study was conducted to evaluate the effect of temperature on the toxicity of Pb on the test organism Moina Dubia. Moina Dubia belongs to the Cladocera group (Cladocera) which is an indigenous creature collected at Lake Hanoi. Moina Dubia was cultured under laboratory conditions and has been used to conduct EC50 determination for Pb. Moina Dubia grew and developed well in the laboratory and was suitable as a test organism in toxicological studies. A survey from 24oC to 28oC water temperature conditions showed that the EC50 value decreases from 1402 ug/l to 775 ug/l. The higher water temperature, the higher toxicity level of Pb on Moina Dubia. Clear impact of water temperature on toxicity of heavy metal as Pb showed that global warming may gradually lead to potential biodegradation in freshwater ecology.

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Macro-Zooplankton Abundance in Relation to Metal Accumulation and Water Quality in Truc Bach Lake

Cited by 2 publications

References 12 publications

Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

Changes in the Magnitude of the Individual and Combined Effects of Contaminants, Warming, and Predators on Tropical Cladocerans across 11 Generations

COMBINATION IMPACT OF pH AND TEMPERATURE ON THE TOXICITY OF LEAD ON ZOOPLANKTON IN THE CONTEXT OF GLOBAL WARMING

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