Effect of long-term exposure to copper on survival and development of two successive generations of Culex pipiens (Diptera, Culicidae)

Amer, Nermeen R.; Lawler, Sharon P.; Zohdy, Nawal Zohdy M.; Younes, Aly; ElSayed, Wael M.; Connon, Richard E.

doi:10.1007/s10646-021-02358-w

Cited by 4 publications

(5 citation statements)

References 57 publications

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“…Consequently, this leads to a longer generation time with a higher risk of being consumed by a predator, which reduces the growth of the populations. Culicidae can also be directly negatively affected by copper . Dixidae abundance also tended to be affected by the CuO-NP_L treatment during the summer season.…”

Section: Discussionmentioning

confidence: 98%

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Biotic and Abiotic Interactions in Freshwater Mesocosms Determine Fate and Toxicity of CuO Nanoparticles

Gräf

Koch

Köser

et al. 2023

Environ. Sci. Technol.

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Transformation, dissolution, and sorption of copper oxide nanoparticles (CuO-NP) play an important role in freshwater ecosystems. We present the first mesocosm experiment on the fate of CuO-NP and the dynamics of the zooplankton community over a period of 12 months. Increasingly low (0.08−0.28 mg Cu L −1 ) and high (0.99−2.99 mg Cu L −1 ) concentrations of CuO-NP and CuSO 4 (0.10− 0.34 mg Cu L −1 ) were tested in a multiple dosing scenario. At the high applied concentration (CuO-NP_H) CuO-NP aggregated and sank onto the sediment layer, where we recovered 63% of Cu applied. For the low concentration (CuO-NP_L) only 41% of applied copper could be recovered in the sediment. In the water column, the percentage of initially applied Cu recovered was on average 3-fold higher for CuO-NP_L than for CuO-NP_H. Zooplankton abundance was substantially compromised in the treatments CuSO 4 (p < 0.001) and CuO-NP_L (p < 0.001). Community analysis indicated that Cladocera were most affected (b k = −0.49), followed by Nematocera (b k = −0.32). The abundance of Cladocera over time and of Dixidae in summer was significantly reduced in the treatment CuO-NP_L (p < 0.001; p < 0.05) compared to the Control. Our results indicate a higher potential for negative impacts on the freshwater community when lower concentrations of CuO-NP (<0.1 mg Cu L −1 ) enter the ecosystem.

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Section: Discussionmentioning

confidence: 98%

“…Culicidae can also be directly negatively affected by copper. 91 Dixidae abundance also tended to be affected by the CuO-NP_L treatment during the summer season. Hence, this could result in delayed larval development or higher mortality compared to the Control.…”

Section: Freshwater Population Dynamicsmentioning

confidence: 94%

Biotic and Abiotic Interactions in Freshwater Mesocosms Determine Fate and Toxicity of CuO Nanoparticles

Gräf

Koch

Köser

et al. 2023

Environ. Sci. Technol.

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“…pipiens survival of the first generation to 12 and 48% at 250 and 500 µg L −1 , respectively, while in the second generation, copper reduced Cx. pipiens survival to 26 and 82% at 250 and 500 µg L −1, , respectively [45]. For the second generation, the effect of a predator cue on distance and velocity was no longer significant.…”

Section: Effects Of Copper and Predation Cues On Behaviourmentioning

confidence: 90%

“…On the other hand, there are uses for copper as a pesticide in situations where nontarget effects are less likely, such as in water in small containers [69]. Copper can be used to control mosquitoes in their immature instars in water storage barrels at CuSO 4 •5H 2 O concentrations of 500 µg L −1 or above [45,69]. Moreover, cemeteries with stone vases lined with copper can be used to avoid mosquitoes breeding in these sites [70].…”

Section: Discussionmentioning

confidence: 99%

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Copper Exposure Affects Anti-Predatory Behaviour and Acetylcholinesterase Levels in Culex pipiens (Diptera, Culicidae)

Amer

Lawler

Zohdy

et al. 2022

Insects

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Copper is an essential metal that occurs chronically in the environment and affects the development and physiology of aquatic insects. In excess amounts, it can impair their nervous system and behaviour. We tested the anti-predatory behaviour of Cx. pipiens larvae after seven days exposure with several concentrations of copper up to 500 mg L−1. We measured responses to non- consumptive (predation cues) and consumptive predation (dragonfly larvae) across two generations. We also tested the accumulated effect of copper on AChE enzyme activity. We exposed half of treated and control larvae to predation cues (water with predator odour and crushed conspecifics) and the other half to water without predation cues. We evaluated total distance moved and velocity. Copper reduced the distance moved and velocity, with stronger effects in the second generation. Copper had no significant effect on larvae eaten by dragonflies. Copper inhibited the AChE enzyme across both generations at 500 µg L−1. Copper can affect the nervous system directly by inhibiting AChE activity, and possibly also by impairing the olfaction sensors of the larvae, resulting in larval inability to detect predation cues.

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Detection of metallic pollutants in waste water using bio sensors and its remediation

Talukder,

Dutta,

Ghosh

et al. 2024

Environmental Quality Mgmt

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Water pollution has emerged as the biggest threat to the sustenance of human civilization and the environment. With the increase in rapid industrialization and urbanization, there is a considerable increase in the influx of complex and diverse pollutants in water bodies. Hence continuous and efficient monitoring is required to detect the pollutants in the aquatic environment. Either preventing or detecting and subsequent elimination of these pollutants is of utmost importance for the health of the aquatic ecosystem. Biosensors have proved to be efficient in detecting these pollutants in a better way as compared to other conventional methods. Sensors are devices that have the ability to detect changes in the physical, chemical, or biological domains and produce a signal that can be measured. The distinguisher element in it minimizes noise caused by other components in the analyte mixture by being able to detect a specific analyte or set of analytes. This current review is focused on the role of biosensors in detecting metallic pollutants in water bodies. It also discusses the process of remediation of metallic pollutants in the aquatic environment.

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Effect of long-term exposure to copper on survival and development of two successive generations of Culex pipiens (Diptera, Culicidae)

Cited by 4 publications

References 57 publications

Biotic and Abiotic Interactions in Freshwater Mesocosms Determine Fate and Toxicity of CuO Nanoparticles

Biotic and Abiotic Interactions in Freshwater Mesocosms Determine Fate and Toxicity of CuO Nanoparticles

Copper Exposure Affects Anti-Predatory Behaviour and Acetylcholinesterase Levels in Culex pipiens (Diptera, Culicidae)

Detection of metallic pollutants in waste water using bio sensors and its remediation

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