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The neonicotinoid imidacloprid is a widely used insecticide worldwide. We assessed the effects of acute and chronic imidacloprid exposure on the social behavior of adult zebrafish. We assembled simple apparatus to detect 2D locomotion: a single camera capture system and two specially designed water tanks. We then used the tracking and heat maps of the behavior trajectories of zebrafish subjected to sham and imidacloprid exposure and compared their social behavior. Furthermore, histomorphology and immunohistochemistry of their brain tissue sections were performed to clarify possible neurotoxicity due to imidacloprid exposure in our adult zebrafish. Our results showed that imidacloprid exposure significantly reduced the zebrafish's swimming speed, distance traveled, acceleration, and deceleration. The longer the imidacloprid exposure, the more severe the locomotor behavior disability. Furthermore, imidacloprid exposure significantly reduced heterosexual attractive behavior between the different sexes, as well as defensive alert behavior among males. Our histomorphology and immunohistochemistry evidence showed imidacloprid exposure may lead to neuronal oxidative stress, inflammation, apoptosis, and damage in the telencephalon of adult zebrafish. Thus, we suggested that neonicotinoid imidacloprid exposure can damage the telencephalon neurons of adult zebrafish through oxidative stress, inflammation, and apoptosis and then affect the social behavior of adult zebrafish.
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http://dx.doi.org/10.3390/life13061418 | DOI Listing |
Sci Total Environ
December 2024
Aquatic Ecology and Water Quality Management Group, Wageningen University and Research, 6700AA Wageningen, the Netherlands. Electronic address:
Many freshwater systems are continuously exposed to waste streams like municipal wastewater and agricultural runoff, leading to exposure to chemicals that can cause mortality and behavioural changes in aquatic organisms. While research has advanced our understanding of pesticide effects on behaviour of aquatic organisms, the impacts of pharmaceuticals are less understood. Psychopharmaceuticals are particularly interesting because they can act on nervous systems, potentially affecting the behaviour of aquatic organisms.
View Article and Find Full Text PDFChemosphere
December 2024
School of Public Health (Shenzhen), Shenzhen Campus of SunYat-sen University, Shenzhen, 518107, China. Electronic address:
In recent years, neonicotinoids (NEOs) as a new type of insecticide have been increasingly used worldwide, causing significant impacts on human health. This study collected urine samples from 1147 elderly individuals (including 714 in the control group and 433 in the hypertension group) in Shenzhen, China, and detected the concentrations of six types of NEOs and four metabolites of NEOs (mNEOs). The aim of this study is to investigate the association between NEOs exposure and hypertension and dyslipidemia.
View Article and Find Full Text PDFEcotoxicology
December 2024
Institute of Plant Protection, MNS-University of Agriculture Multan, Multan, Pakistan.
The yellow fever mosquito, Aedes aegypti L., known for transmitting viruses causing yellow fever, dengue, chikungunya, and Zika fever, presents a substantial risk to global human health. The development of insecticide resistance in disease vectors has become a significant problem in Ae.
View Article and Find Full Text PDFChemosphere
December 2024
Laboratory of Molecular Entomology and Ecotoxicology, Department of Entomology, Universidade Federal de Lavras, 37200-900, Lavras, MG, Brazil. Electronic address:
Environmental global changes are dramatically affecting agroecosystems. Insects have been shown to present various responses to multi-stress conditions (i.e.
View Article and Find Full Text PDFInsect Sci
November 2024
School of BioSciences, The University of Melbourne, Melbourne, VIC, 3052, Australia.
Insecticide contamination and climate change are key factors driving the global decline in insect populations. However, how these factors interact to impact insect survival remains uncertain. In this study, we examined the effects of sex and genotype on the response to long-term low insecticide exposure at two temperatures, 18 °C and 28 °C, using the Drosophila melanogaster model.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!