ENVIRONMENTAL POLLUTION
·
2017
·
IF 5.099
Dong Zhu,Qing-Fang Bi,Qian Xiang,Qing-Lin Chen,Peter Christie,Xin Ke,Long-Hua Wu,Yong-Guan Zhu
Although the roles of earthworms and soil collembolans in the transport of microplastics have been studied previously, the effects of the soil biota at different trophic levels and interspecific relationships remain poorly understood. Here, we examine three soil microarthropod species to explore their effects on the transport of microplastics. The selected Folsomia candida and Hypoaspis aculeifer are extensively used model organisms, and Damaeus exspinosus is a common and abundant indigenous species in China. A model food chain (prey-collembolan and predator-mite) was structured to test the role of the predator-prey relationship in the transport of microplastics. Commercial Polyvinyl chloride (PVC) particles (Diameter: 80–250 μm) were selected as the test microplastics, because large amounts of PVC have persisted and accumulated in the environment. Synchronized soil microarthropods were held in plates for seven days to determine the movement of microplastics. The 5000 microplastic particles were carefully placed in the center of each plate prior to the introduction of the animals. Our results clearly show that all three microarthropod species moved and dispersed the microplastics in the plates. The 0.54%, 1.8% and 4.6% of the added microplastic particles were moved by collembolan, predatory mite and oribatid mite, respectively. Soil microarthropods (<0.2 cm) transported microplastic particles up to 9 cm. The avoidance behavior was observed in the collembolans in respect of the microplastics. The predatory -prey relationship did promote the transport of microplastics in the plates, increasing transport by 40% compared with the effects of adding single species (P < .05). Soil microarthropods commonly occur in surface soils (0–5 cm) and, due to their small body size, they can enter soil pores. Our results therefore suggest that the movement of microplastics by soil microarthropods may influence the exposure of other soil biota to microplastics and change the physical properties of soils.
研究领域:
生态学
·
环境科学
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DOI
PubMed
高影响因子
Water
·
2023
·Vol. 15
·期 3
·445
·
IF 3.4
Rijin Jiang,Zhaochao Deng,Jingjing Li,Yi Xiao,Yongjiu Xu,Jing Wang,Tiejun Li,Chunfang Zhang
Microplastics in marine environments are becoming a hot topic since they can be transferred through the marine food web and may finally be consumed by humans. Here, we investigate the distribution characteristics of microplastics in marine organisms at different trophic levels through their digestive tracts (entire organisms for zooplankton and zoobenthos). A total of 124 fish and 22 crustaceans from 10 fish and 3 crustacean species, as well as a few zooplankton and zoobenthos, were captured from the Zhoushan fishing ground, i.e., China’s largest ocean fishing ground. The abundance of microplastics ranged from 0.74 ± 1.29 to 4.71 ± 2.19 items per sample in fish species and from 0.83 ± 1.07 to 1.00 ± 0.93 items per sample in crustacean species. Among the detected microplastics, fiber was the most dominant type (i.e., 67%), transparent microplastics were the most frequently detected (i.e., 49%), and the majority of the microplastics were identified as natural particles (cellulose). The abundance of microplastics was positively correlated with the trophic level (correlation coefficient = 0.717;p< 0.05). Our results show that microplastics are widespread in the marine organisms of the Zhoushan fishing ground, and they might accumulate in marine organisms at higher trophic levels of the marine food chain.Keywords:microplastics;Zhoushan fishing ground;marine organism;food chain;natural microplastics
研究领域:
生态学
·
环境科学
·
海洋生物学
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science-Nano
·
2019
·Vol. 6
·期 11
·3431-3441
·
IF 7.704
Bowen Xiao,Yinqing Zhang,Xiaolei Wang,Meng Chen,Binbin Sun,Tong Zhang,Lingyan Zhu
The wide production and utilization of nanoparticulate Ag and Ti inevitably result in their release into the environment. Thus far, limited information is available regarding to what extent the nanoparticulate Ag and Ti could accumulate in biota and magnify along the food chain in real natural aquatic environments. With the application of single particle inductively coupled plasma mass spectroscopy, we quantitatively demonstrated that both nanoparticulate Ag (18.8–41.0 nm) and Ti (46.6–116 nm) occurred in the water, sediment and aquatic organisms in Taihu Lake, China. Nanoparticulate Ag exhibited greater bioaccumulation potential compared to its other chemical counterparts, and also a greater bioaccumulation factor than nanoparticulate Ti. Sediment served as a main reservoir for nanoparticulate Ag and Ti, and acted as one important exposure source for invertebrates. According to the concentrations of nanoparticulate Ag and Ti in aquatic organisms at different trophic levels, including a variety of invertebrates and fish species, the total and nanoparticulate Ti appeared to be biodiluted in the food web with trophic magnification factors (TMFs) < 1. Conversely, biomagnification of nanoparticulate Ag was found in the fish food web with a TMF of 1.21, while the total Ag was biodiluted. These findings serve as the first line of evidence on the transfer behaviors of nanoparticulate Ag and Ti along the natural aquatic food chain and underline the distinctive bioaccumulation and biomagnification behaviors of nanoparticles as opposed to their other chemical counterparts.
研究领域:
环境科学
·
生态学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Jingjing Du,Xilin Wang,Tianying Tao,Yan Su,Xueting Zhang,Jing Shao,Yufan Zhang,Luyao Yu,Baodan Jin,Wenrui Qv,Xia Cao,Lan Wang,Yanqin Yang
Polystyrene nanoparticles (PS NPs) released from plastic products have been demonstrated to pose a threat to leaf litter decomposition in streams. Given the multitrophic systems of species interactions, the effects of PS NPs through different exposure routes on ecosystem functioning remain unclear. Especially dietary exposure, a frequently overlooked pathway leading to toxicity, deserves more attention. A microcosm experiment was conducted in this study to assess the effects of waterborne and dietary exposure to PS NPs on the litter-based food chain involving leaves, microbial decomposers , and detritivores (river snails). Compared to waterborne contamination, dietary contamination resulted in lower microbial enzyme activities and a significantly higher decrease in the lipid content of leaves. For river snails, their antioxidant activity was significantly increased by 20.21%–69.93%, and their leaf consumption rate was significantly reduced by 16.60% through the dietary route due to the lower lipid content of leaves. Besides, the significantly decreased nutritional quality of river snails would negatively influence their palatability to predators. The findings of this study indicate that dietary exposure to PS NPs significantly impacts microbial and detritivore activities, thus affecting their functions in the detritus food chain as well as nutrient cycling.
研究领域:
生态学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Bowen Xiao,Rongyan Yang,Pengyu Chen,Jing Yang,Binbin Sun,Kunkun Wang,Tong Zhang,Lingyan Zhu
Silver nanoparticles (AgNPs) released into the environment are subject to environmental transformation processes before accumulating in aquatic organisms and transferring along the food chain. Lack of understanding on how environmental transformation affects trophic transfer of AgNPs hinders accurate prediction of the environmental risks of these widely present nanomaterials . Here we discover that pristine AgNPs as well as their sulfidation products (Ag 2 S-NPs) and dissolution products (Ag + ) tend to be accumulated in Daphnia magna and subsequently transferred to zebrafish. In D . magna , Ag + exhibits the highest bioaccumulation potential whereas Ag 2 S-NPs show the lowest bioaccumulation. Surprisingly, the biomagnification factor of Ag + along the D . magna -zebrafish food chain appears to be significantly lower relative to AgNPs and Ag 2 S-NPs, likely due to the limited release of Ag from D . magna to zebrafish during digestion. Moreover, AgNPs and their transformation products mainly accumulate in the internal organs, particularly intestine, of zebrafish. Adsorption of AgNPs on the surface of the intestinal cell membrane mitigates depuration of AgNPs and, at least in part, leads to the larger biomagnification factor of AgNPs, relative to their transformation products. This research highlights the necessity of considering environmental transformation processes of nanomaterials in assessing their bioavailability and risk.
研究领域:
环境科学
·
生态学
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Hongping Liao,Dandan Gao,Chunmiao Kong,Muhammad Junaid,Ye Li,Xikun Chen,Qingzhi Zheng,Guanglong Chen,Jun Wang
Nanoplastics and di(2-ethylhexyl) phthalate (DEHP) are ubiquitous emerging contaminants that are transferred among organisms through food chain in the ecosystem. This study evaluated the trophic transfer of polystyrene nanoplastics (PSNPs) and DEHP in a food chain including Chlorella pyrenoidosa , Daphnia magna and Micropterus salmoides (algae-crustacean-fish) and lipid metabolism at a higher trophic level in fish. Our results showed that the PSNPs and DEHP accumulated in C. pyrenoidosa or D. magna were transferred to the M. salmoides , of which the DEHP were not biomagnified, while the PSNPs were trophically amplified by the food chain. It is suggested that more PSNPs might be accumulated by higher level consumers in a longer food chain. Additionally, the trophic transfer of PSNPs and DEHP resulted in antioxidant response and histopathological damage in M. salmoides . Moreover, the lipid biochemical parameters and lipid metabolism related genes ( fasn , hsl , cpt1a , atgl , apob , fabp1 , lpl , cetp ) of M. salmoides were significantly affected, which indicated disturbance of lipid metabolism. This study offers great insight into the transfer of contaminants by trophic transfer and their negative effects on organisms at higher trophic levels, which cause human exposure to MNPs and organic contaminants in the ecosystem.
研究领域:
环境科学
·
生态毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANTARCTIC SCIENCE
·
2017
·Vol. 29
·期 6
·511-516
·
IF 1.461
Xiangning Han,Daicheng Liu
High-performance thin layer chromatography was performed to investigate the potential presence of four phthalic acid esters, dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP) and dioctyl phthalate (DEHP), in Antarctic krill. The results revealed that in freeze-dried Antarctic krill levels of DBP (0.1043±0.0005 mg g-1 (104.3±0.05 mg kg-1)) were high. The structure of DBP in Antarctic krill was determined by gas chromatography-mass spectrometry. Its existence is of concern based on demonstrated harmful effects to animals and plants as Antarctic krill is a key part of the food chain in Antarctic coastal marine ecosystems. The adverse effects of DBP on Antarctic krill and the source of DBP should be explored in further research.
研究领域:
生态学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2023
·
IF 8.9
Jingyi Guo,Na Liu,Qiting Xie,Lizhong Zhu,Fei Ge
Ubiquitous microplastics (MPs) may affect the trophic transfer of nanoparticles (NPs), in turn threatening aquatic organisms and even human health. Thus, this study explored the influence of polystyrene microplastics (PS MPs) on the biotoxicity and biomagnification of ZnO nanoparticles (ZnO NPs) in the aquatic food chain from Chlorella vulgaris ( C. vulgaris ) to Daphnia magna ( D. magna ). The results showed that PS MPs facilitated the biotoxicity of ZnO NPs towards D. magna after dietary exposure. Compared to the control (single ZnO NPs), the heart rate and the level of reactive oxygen species were remarkably increased by 21.25% and 16.32% in the combined system (PS MPs + ZnO NPs), respectively. Notably, PS MPs suppressed the ZnO NPs accumulation in C. vulgaris , while remarkably facilitating the trophic transfer of ZnO NPs to D. magna . The biomagnification of ZnO NPs was evident with a maximal biomagnification factor (BMF) of 1.49 under acute dietary exposure of PS MPs (72 h), but was absent in the single ZnO NPs system (BMF <0.90). Moreover, PS MPs resulted in a larger biomagnification of ZnO NPs with a maximal BMF of 2.11 under chronic dietary exposure (21 days). Furthermore, the Zn element (including ZnO NPs and released Zn 2+ ) was observed to accumulate in the intestine, thus causing ultrastructural damage and lipid droplet (LD) aggregate. Overall, these findings highlight the importance of considering the impact of MPs on co-existed pollutants and contribute to a better understanding of the ecological risks of MPs in aquatic ecosystems .
研究领域:
环境科学
·
水生生态学
·
纳米毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Mingtao Tan,Hongfei Wu,Yaning Li,Aoying Zhang,Jinsheng Xu,Rusong Chai,Zhaojun Meng,Shanchun Yan,Dun Jiang
The toxicity of heavy metals on various trophic levels along the food chain has been extensively investigated, but no studies have focused on parasitic natural enemy insects. Herein, we constructed a food chain consisting of soil– Fraxinus mandshurica seedlings– Hyphantria cunea pupae– Chouioia cunea to analyze the effects of Cd exposure through food chain on the fitness of parasitic natural enemy insects and its corresponding mechanism. The results showed that the transfer of Cd between F. mandshurica leaves and H. cunea pupae and between H. cunea pupae and C. cunea was a bio-minimization effect. After parasitizing Cd-accumulated pupa, the number of offspring larvae, and the number, individual size (body weight, body length, abdomen length) and life span of offspring adults decreased significantly, while the duration of embryo development extended significantly. The contents of malondialdehyde and H 2 O 2 in Cd-exposed offspring wasps increased significantly, accompanied by a significantly decrease in antioxidant capacity. The cellular immunity parameters significantly decreased in Cd-accumulated pupae, including the number of hemocytes, melanization activity and the expression level of cellular immunity genes (e.g. Hemolin-1 and PPO1 ). The humoral immunity disorder was found in the Cd-accumulated pupae, as evidenced by that the expression level of immune recognition gene ( PGRP-SA ), signal transduction genes ( IMD , Dorsal , and Tube ), as well as all antimicrobial peptide genes (e.g. Lysozym and Attacin ) decreased significantly. Cd exposure decreased the content of glucose, trehalose, amino acid, and free fatty acid in H. cunea pupae. The expression of Hk2 in glycolysis pathway and the expression of Idh2 , Idh3 , Cs , and OGDH in TCA cycle pathway were significantly down-regulated in Cd-accumulated pupae. Taken together, exposure to Cd through the food chain causes oxidative damage on the offspring wasps and disrupts energy metabolism of the host insect, ultimately reducing the parasitic fitness of C. cunea to H. cunea pupae.
研究领域:
生态毒理学
·
昆虫学
·
环境科学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Chunli Lei,Zicong Ding,Mengna Tao,Yubo Lu,Lanqing Xu,Bingxu Cheng,Chuanxi Wang,Zhenyu Wang
The enormous potential of carbon dots (CDs) in agriculture has been widely reported, whereas their accurate distribution, transformation, and metabolic fate and potential soil health effects are not clearly understood. Herein, 13C-labeled CDs (13C-CDs) were sprayed on maize leaf, accumulated in all tissues, and promoted photosynthesis. Specifically, 13C-CDs were internalized to participate in the synthesis of glucose, sucrose, citric acid, glyoxylate, and chlorogenic acid, promoting tricarboxylic acid cycle (TCA) and phenylalanine metabolism. Additionally, the catabolism of 13C-CDs in vivo was mainly mediated by O2•– produced by oxidative stress. 13C-CDs did not have an obvious impact on the soil environment at the overall level. The detection of 13C signals in soil fauna suggested 13C-CDs in soil food chain transmission. This study systematically described the exact fate of CDs in plants and potential soil ecological risks and provided a more comprehensive analysis and support for the potential advantages of CDs in agricultural application.
研究领域:
农业
·
植物生理学
·
环境科学
·
土壤学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Xuewen Yao,Zhaokang Cheng,Evgenios Agathokleous,Yaqian Wei,Xinyuan Feng,Hanhan Li,Tingting Zhang,Shuting Li,Gaurav Dhawan,Xiao-San Luo
As typical antibiotics, tetracycline (TC) and sulfadiazine (SDZ) enter the human body through the food chain. Therefore, it is necessary to understand their individual and combined toxicity. In this study, the effects of TC, SDZ, and their mixture on cell viability, cell membrane damage, liver cell damage, and oxidative damage were evaluated in in vitro assays with human liver cells Huh-7. The results showed cytotoxicity of TC, SDZ, and their mixture, which induced oxidative stress and caused membrane and cell damage. The effect of antibiotics on Huh-7 cells increased with increasing concentration, except for lactate dehydrogenase (LDH) activity that commonly showed a threshold concentration response and cell viability, which commonly showed a biphasic trend, suggesting the possibility of hormetic responses where proper doses are included. The toxicity of TC was commonly higher than that of SDZ when applied at the same concentration. These findings shed light on the individual and joint effects of these major antibiotics on liver cells, providing a scientific basis for the evaluation of antibiotic toxicity and associated risks.
研究领域:
药理学
·
毒理学
·
细胞生物学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Haisu Liu,Lei Xie,Yang Xiao,Ruiwei Ran,Yuhang Fang,Baoling Yang,Liying Tan,Juanchan Xu,Songhui Lu,Yuelei Dong,Lei Cui
Marine microalgae serve as an aquaculture bait. To enhance algal cell growth and breeding profits, high-intensity light conditions are standard for cultivating bait microalgae, potentially altering microalgal metabolite production. This research revealed that Thalassiosira pseudonana, when subjected to high-intensity light conditions, accumulated significant quantities of retinal (RAL) that transferred through the food chain and transformed into all-trans retinoic acid (atRA) in marine medaka. The study further explored the toxic effects on individual fish and specific tissues, as well as the mechanisms behind this toxicity. The accumulation of atRA in the liver, intestine, and spinal column resulted in structural damage and tissue inflammation, as well as oxidative stress. It also down-regulated the gene transcription levels of key pathways involved in immune function and growth. Furthermore, it disrupted the homeostasis of the intestinal microbial communities. The implications for wildlife and human health, which are influenced by the regulation of microalgal metabolite accumulation and their transfer via the food chain, require further investigation and could hold broader significance.
研究领域:
海洋生物学
·
毒理学
·
环境科学
·
水产养殖
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）