Weiping Mei

Guangxi Academy of Sciences · Institute of Eco-Environmental Research

Introduction The black scraper, Thamnaconus modestus, is a highly valued marine fish species, but its output has gradually decreased in recent years, which may be due to its low survival rate during early ontogenesis. Methods Therefore, in this study, we assessed the changes in growth, morphology, digestive enzymes, and hormone levels in T. modest...

Senegalese sole, Solea senegalensis, is a flatfish of high commercial value in the world. It has been identified as an interesting and promising species for marine commercial aquaculture diversification in Europe for at least four decades and was introduced to China in 2003. Early ontogenesis from embryo to juvenile stages in S. senegalensis was an...

(1) Fshβ and Lhβ showed stronger signals and higher transcript levels from 590 to 1050 dph than at earlier stages, implying their active involvement during primary oocyte development. (2) Fshβ and Lhβ at lower levels were detected during the phases of ovarian differentiation and oogonial proliferation. (3) E2 concentrations increased significantly...

Background: We investigated the growth and feeding characteristics of threadsail filefish, Stephanolepis cirrhifer, during early ontogenesis. Methods: The growth indices of hatchlings fed compound feed were measured from 0 to 50 days post hatching (dph). The absorption time of the yolk sac and oil globule, as well as the rate of first feeding were...

The light spectrum is a key environmental cue involved in growth and reproduction in teleosts. This study investigated the effects of exposure on juvenile red spotted grouper exposed to white (control), red (590 nm), blue (480 nm), and green (520 nm) light-emitting diodes (LEDs) (12 h light:12 h dark) for two months. The body weight (BW), total len...

Biochar has been widely used for the remediation of polycyclic aromatic hydrocarbon (PAH)-contaminated soil, but its mechanism of influencing PAH biodegradation remains unclear. Here, DNA-stable isotope probing coupled with high-throughput sequencing was employed to assess its influence on phenanthrene (PHE) degradation, the active PHE-degrading mi...

Add trendline and confidence interval of linear or nonlinear regression model and show equation to 'ggplot' as simple as possible.

This study provides new knowledge on the mobility, behavior, and partitioning of 17 perfluoroalkyl substances (PFASs) in the water-sediment-plant system along the Dongzhulong and Xiaoqing Rivers. The fate of PFASs in these rivers is also discussed. The study area is affected by the industrial production of perfluorooctanoic acid (PFOA). The ∑PFASs...

Per- and polyfluoroalkyl substances (PFASs) are ubiquitous in the environment but pose potential risks to ecosystems and human health. The soil–plant system plays an important role in the bioaccumulation of PFASs. Because most PFASs in the natural environment are anionic and amphiphilic (both lipophilic and hydrophilic), their sorption and accumula...

Supplementary Material #1 of "Per- and polyfluoroalkyl substances (PFASs) in the soil–plant system: Sorption, root uptake, and translocation" https://doi.org/10.1016/j.envint.2021.106642

Supplementary Material #2 of "Per- and polyfluoroalkyl substances (PFASs) in the soil–plant system: Sorption, root uptake, and translocation" https://doi.org/10.1016/j.envint.2021.106642

Organophosphate flame retardants (OPFRs), as a replacement for polybrominated diphenyl ethers (PBDEs), are of increasing concern due to their high production over the years. Soil is the major environmental reservoir and interchange for OPFRs. OPFRs in soil could be transferred to the food chain, and pose potential ecological and human health risks....

Plant uptake and translocation of perfluorooctane sulfonate (PFOS) are critical for food safety and raise major concerns. However, those processes are associated with many undisclosed mechanisms, especially when PFOS coexist with heavy metals. In this study, we investigated the effect of copper (Cu) on PFOS distribution in maize tissues by assessin...

Soil is a reservoir of environmental resistomes. Information about their distribution, profiles, and driving forces in undisturbed environments is essential for understanding and managing modern antibiotic resistance genes (ARGs) in human disturbed environments. However, knowledge about the resistomes in pristine soils is limited, particularly at n...

Plants usually promote pollutant bioremediation by several mechanisms including modifying the diversity of functional microbial species. However, conflicting results are reported that root exudates have no effects or negative effects on organic pollutant degradation. In this study, we investigated the roles of ryegrass in phenanthrene degradation i...

supplementary material of interactions between miciroplastics and organic compounds: A mini review

Microplastics (MPs) are widely distributed in aquatic environments. They may release toxic substances or act as carriers for other organic compounds and pathogens, with potential to cause harm to the ecological environment and human health. A key concern is how MPs interact with organic compounds. We reviewed related works conducted under both labo...

Supplementary materials of "Feeding habits estimated from weight-related isotope variations of mesopelagic fish larvae in the Kuroshio waters of the northeastern East China Sea"

Supplementary materials of "Factors controlling spatiotemporal variations in stable nitrogen isotopes of Trachurus japonicus larvae and juveniles in the East China Sea"

We conducted feeding experiments with sardine (Sardinops melanostictus) and Japanese flounder (Paralichthys olivaceus) to investigate trophic discrimination factors (TDFs) in bone collagen using retrospective isotope analysis. Sardines and Japanese flounder were fed a single diet for 9 months and 4 months, respectively. At the end of the experiment...

To clarify the factors that affect spatiotemporal isotopic variations in fishes, we examined stable carbon and nitrogen isotope ratios (δ¹³C and δ¹⁵N) of Japanese jack mackerel Trachurus japonicus larvae and juveniles sampled in the shelf break region of the East China Sea (ECS) in April during six consecutive surveys (2005–2010). The δ¹³C values i...

PhD Dissertation Presentation by Weiping Mei @Nagasaki University

[User-friendly Guide]: https://github.com/PhDMeiwp/basicTrendline/blob/master/README.md

Bulk carbon and nitrogen stable isotope (SI) ratios (δ13C and δ15N) were analysed to investigate the feeding habits of six taxa of mesopelagic fish larvae inhabiting the Kuroshio waters of the northeastern East China Sea. Large variation in tissue SI during early larval periods suggested maternal effects from parent fishes, and non-selective feedin...

Most mesopelagic fishes vertically migrate every day, often following to similar migrations of their main food, zooplankton. Therefore feeding habits of mesopelagic fishes vary depending on the species and developmental stages, and are an important link between primary consumers and top predators in marine ecosystems . In the Kuroshio region at the...

2012 年,每 2 个月采集一次上海人工滩涂湖泊-滴水湖水系表层沉积物,对其多氯联苯(PCBs)的残留水平进行了检测和分析. 结果表明,研究期间闸外引水河和闸内引水河沉积物中 7 种 PCBs 的总量各月间变化较大,且总体呈上升趋势,而滴水湖沉积物中其总量四 季变化幅度不大;空间分布上,闸外引水河[(844.74±687.62)ng/g]>闸内引水河[(516.83±645.45)ng/g]>>滴水湖[(81.63±72.18)ng/g].研究区 PCBs 组成以六氯联苯和七氯联苯为主,其次为五氯联苯和三氯联苯.采用主成分分析法对 PCBs 进行源解析,结果显示:PCBs 污染源中进口 电容器中 PCBs 的迁移占 43%,油漆添加剂污染占 33%;国产电容器和变压器污染占 11%.生态风...

2012年,每两个月采集1次浙江省舟山近海水样及表层沉积物样品,检测16种多环芳烃（PAHs）含量.结果表明,舟山近海水体和沉积物中PAHs均存在显著的时空差异性,水体ΣPAHs浓度范围为382.3-816.9 ng·L^-1,平均值为552.5ng·L^-1;沉积物ΣPAHs含量范围为1017.9-3047.1 ng·g ^-1,平均值为2022.4 ng·g ^-1.空间分布上,水体ΣPAHs最大值和最小值分别出现在小洋山和燕窝山海域,而沉积物中分别出现在小洋山和朱家尖南沙海域.时间变化上,水体ΣPAHs最大值和最小值出现在10月和6月,而沉积物中分别出现在8月和6月.PAHs污染来源主要是油类排放和木柴、煤燃烧的共同叠加作用.结合PAHs的生物阈值,利用超标系数法评价舟山近海PAHs的...

为了解上海滴水湖重金属污染特征及其生态风险, 以该湖及其引水河道10 个采样点的表层沉积物为研究对象, 用原子吸收分光光度法测定Cu 、Cd 、Pb 、Zn 、Cr 、Hg、As 7 种重金属质量比, 研究滴水湖及其引水河道重金属污染的空间分布特征。运用Hakanson 潜在生态风险指数法对表层沉积物中重金属污染状况进行评价,并利用相关性分析及PCA 主成分分析法识别污染来源。结果表明, 引水河道沉积物中各重金属的年平均质量比普遍高于滴水湖湖区。由潜在生态风险评价结果可知, 滴水湖及其引水河道总体潜在生态风险指数RI 均值为1 343.44 , 具有很强的生态危害;各重金属离子生态风险由高至低依次为Cd 、Hg 、As 、Pb 、Cu 、Cr、Zn , 其中Cd 与Hg 的潜在生态风险系数均...

根据2011 年9 月—2012 年8 月监测数据,分析上海市人工湖泊———滴水湖叶绿素a 的时空分布及其与主要环境因子的相互关系。结果表明:滴水湖叶绿素a 含量随时间的变化幅度较大,表现为3、7 月出现高峰而其他月份较低;叶绿素a 含量在空间分布上具有一定的分异性,湖心普遍偏高,其他各点相对较低;对滴水湖叶绿素a 采用主成分多元线性回归分析(APCS-MLR),得到描述水质因子的潜变量F1、F2与其相关性较大,建立了潜变量与叶绿素a 含量的相关性模型;滴水湖叶绿素a 含量与溶解氧( DO)、水温、总溶解磷(TDP)、活性磷(AP)有着密切的相关性;磷为滴水湖水体初级生产力的限制因子;因此,磷是有效控制滴水湖水体富营养化的关键因子。 Based on the monitoring data...

2012 年, 每两个月采集一次上海人工滩涂湖泊——滴水湖水系表层沉积物, 检测16 种多环芳烃(PAHs) 含量. 结果表明, 滴水湖水系∑ PAHs 变化范围为74.03-579.20 ng/g, 平均值为272.55 ng/g. 其中, 闸外引水河[(407.64±6.90) ng/g]≈ 闸内引水河[(427.99±213.84) ng/g]> 滴水湖[(156.33±62.00) ng/g]. 研究区各点蒽/(蒽+ 菲) 比值均大于0.1, 说明PAHs 主要来自于石油燃烧源. 生态风险评价表明, 滴水湖水系沉积物PAHs 不存在严重的生态风险, 但闸外和闸内引水河沉积物PAHs 存在较低几率的潜在风险, 湖区沉积物PAHs 则无潜在风险. Dishui Lake is the l...