Trophic structure of fishes and macroinvertebrates in relation to environmental indicators in artificial reef ecosystems of Pearl River Estuary

Bioaccumulation and Trophic Transfer of Organophosphate Flame Retardants and Their Metabolites in the Estuarine Food Web of the Pearl River, China

“…Seventeen fish species were identified including Cynoglossus joyneri ( n = 4), Cynoglossus macrolepidotus ( n = 2), Moolgarda cunnesius ( n = 3), Nemipterus japonicus ( n = 4), Siganus fuscescens ( n = 2), Ambassis urotaenia ( n = 3), Collichthys lucidus ( n = 3), Ilisha elongata ( n = 3), Leiognathus brevirostris ( n = 6), Johnius belangerii ( n = 5), Trypauchen vagina ( n = 4), Thryssa kammalensis ( n = 4), Sillago sihama ( n = 1), Dendrophysa russelii ( n = 3), Platycephalus indicus ( n = 2), Muraenesox talabonoides ( n = 1), and Argyrosomus argentatus ( n = 3). The collected components that could form an estuarine food web in this study were mainly dominated by benthic species (Table S2), all of which represent typical estuarine species in the PRE ecosystem. ,,− After collection, the samples were transported to the laboratory and stored in a refrigerator at −20 °C. In addition, 21 surface water samples and 10 surface sediment samples were collected from the sampling region.…”

“…The estuarine species were sampled five times using a standard trawling method (45 min for each sample) at a speed of approximately 2 knots . All faunal samples were identified and classified based on the available literature − and databases (i.e., Fishbase, SeaLifeBase, WoRMS, China Animal Scientific Database, and EOL). The samples contained four snail species, including Cuma lacera ( n = 3), Turritella terebra bacillum ( n = 2), Nassarius siquijorensis ( n = 3), and Murex trapa ( n = 3); six shrimp species, including Banana prawn ( n = 4), Parapenaeopsis hardwickii ( n = 3), Exopalaemon carinicauda ( n = 3), Metapenaeus affinis ( n = 3), Metapenaeus joyneri ( n = 3), and Parapenaeopsis hungerfordi ( n = 3); and two crab species, Charybdis japonica ( n = 3) and Clibanarius striolatus ( n = 2).…”

“…The Pearl River Estuary (PRE) is located in one of the most industrialized regions in China, where there is widespread usage of chemicals in the manufacturing industry. − The PRE plays an essential role in the transportation of terrestrial pollutants to the sea, leading to relatively high environmental concentrations of various traditional or emerging pollutants in estuarine and coastal areas. , In the present study, estuarine organisms, including snails, crustaceans, and fishes, were collected from the PRE to investigate (1) the bioaccumulation of nine representative OPFRs and six of their metabolites in the food web components; (2) the trophic transfer behaviors of OPFRs along with their metabolites, including DAPs and OH-OPFRs; and (3) the effects of chemical characteristics (i.e., log K OW ) and biotransformation rates on the trophodynamics of OPFRs. The present study attempts to not only address the data gaps on the accumulation, trophic transfer, and fates of OPFR metabolites across the food web but also to provide insight into the mechanisms that govern the trophodynamics of OPFRs in estuarine food webs.…”

RETRACTED: Exploring Spatio-Temporal Heterogeneity and Inter-Domain Ecological Networks of biological community in a Marine Ranching Habitat: Implications for fishery resources conservation

“…The results of the VIP showed that 40 phytoplankton species, 22 zooplankton species and 11 nekton species contributed signi cantly to the spatial and temporal heterogeneity of biological communities in the survey area, which illustrated that the change of habitat can have a faster and wider impact on the change of phytoplankton community. Relevant researches have indicated that the deployment of ARs may cause immediate ecological impacts on certain ecologically vulnerable marine organisms, as well as long-term ecological impacts on certain environmentally tolerant organisms through the cascade effect of the food chain [39] . The formation of a stable biological community is the result of long-term interaction between environmental selection and biological adaptation.…”

First Evidence of the Bioaccumulation and Trophic Transfer of Tire Additives and Their Transformation Products in an Estuarine Food Web

“…Recognition and categorization of biota samples were based on databases such as China Animal Science Database, EOL, Fishbase, SeaLifeBase, and WoRMS . Based on previous reports, these biota samples collected in this study belonged to the representative species of the PRE. − To minimize the microbial activity and transformation of targeted chemicals, the pH of water samples was acidified to 3.0 immediately upon collection, and 1 mL of glutathione solution (1 M) and 5% methanol (v/v) were added. , All samples were preserved in a −20 °C refrigerator and then delivered to the laboratory promptly. Information on sampling locations, water quality, and biota samples is provided in Figure S1 and Tables S2–S4 in the Supporting Information.…”