Time filter

Source Type

Xiao Y.,CAS Qingdao Institute of Oceanology | Guan S.,Marine Biology Institute of Shandong Province | Liu Q.,CAS Qingdao Institute of Oceanology | Liu H.,Marine Biology Institute of Shandong Province | And 7 more authors.
Journal of the Marine Biological Association of the United Kingdom | Year: 2016

Seven-band grouper (Hyporthodus septemfasciatus) is a commercial rocky reef fish in East Asia that has been regarded as a promising species for aquaculture. To investigate the broodstock contributions to offspring for the sustainability of fry production, 62 individuals of H. septemfasciatus from two broodstocks and one offspring population were analysed using fluorescent-AFLP. A total of 602 bands were amplified and 70.10% of them were polymorphic. The numbers of polymorphic loci were 308 (P broodstock I = 55.50%) and 356 (P broodstock II = 63.12%) in the two broodstocks, and 294 (P offspring = 52.88%) in the offspring, respectively. The average values of Shannon diversity index (I) and expected heterozygosity (H) were higher in the broodstock (I broodstock I = 0.281, I broodstock II = 0.244, H broodstock I = 0.185, H broodstock II = 0.161) than those in the offspring (I offspring = 0.243, H offspring = 0.161). AMOVA and FST analyses showed that significant genetic differentiation between broodstock and offspring populations, and limited effective broodstock population size has contributed to the offspring. Both STRUCTURE and Principal Coordinates Analysis (PCoA) also showed the three populations composed of two stocks and most offspring individuals (95.0%) only originated from 44.0% of the individuals of broodstock I, which may have negative effects on sustainable fry production. Therefore, genetic variation between broodstock and offspring should be monitored, and large effective size of broodstock should be employed to ensure the success of commercial breeding programmes. Our data provide a useful genetic basis for future planning of sustainable culture and management of H. septemfasciatus. Copyright © Marine Biological Association of the United Kingdom 2016


Gu Y.-G.,CAS South China Sea Fisheries Research Institute | Gu Y.-G.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Gu Y.-G.,Key Laboratory of South China Sea Fishery Resources Development and Utilization | Wang X.-N.,CAS South China Sea Fisheries Research Institute | And 17 more authors.
Ecotoxicology and Environmental Safety | Year: 2016

The fuzzy comprehensive assessment was undertaken to evaluate the marine sediment quality in Daya Bay, China based on the monitoring data of 2015 and China National Standard for Marine Sediment Quality (GB 18668-2002). The results demonstrated that the average metal concentrations (mg/kg) were 0.08 (Cd), 51.30 (Pb), 91.30 (Cr), 29.63 (Cu), 143.42 (Zn), 0.03 (Hg), and 7.31 (As), which were clearly higher with respect to their corresponding background values. Cr was the major pollutant based weight matrices calculated. Taken as whole, the membership degree of class I was a range from 0.65 to 1, suggesting that the marine sediment quality in Daya Bay belongs to class I. Pb stable isotopic analysis coupled with geographic information system (GIS) approach showed the sedimentary Pb mainly originated from petrochemical industry at northwest coast of Daya Bay. © 2015 Elsevier Inc.


Gu Y.-G.,CAS South China Sea Fisheries Research Institute | Gu Y.-G.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Gu Y.-G.,Key Laboratory of South China Sea Fishery Resources Development and Utilization | Huang H.-H.,CAS South China Sea Fisheries Research Institute | And 5 more authors.
Environmental Toxicology and Pharmacology | Year: 2016

Heavy metal concentrations in edible organisms from the core area of Daya Bay's Fishery Resource Reserve, South China Sea, were determined. Samples of 14 crustacean, fish, and shellfish species were collected and analyzed. The As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn concentrations were 0.18-1.16, 0.002-0.919, 0.40-2.85, 0.07-4.10, 0.004-0.055, 0.14-1.19, 0.014-0.070, and 4.57-15.94 μg/g wet weight, respectively. The As concentrations were higher than the Chinese maximum permissible levels in all of the fish and shellfish species and two crustacean species, indicating that consumption of these wild species by humans may pose health risks. However, calculations of the health risks posed to humans indicated that no significant adverse health effects would be associated with consuming these species. © 2016 Elsevier B.V.


Liu H.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Shen P.,CAS South China Sea Institute of Oceanology | Li C.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Chen Z.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | And 2 more authors.
Journal of Ocean University of China | Year: 2016

Ciliates are very important components in most marine ecosystem. They are trophic link between the microbial food web and grazing food chain. In this study, ciliates were collected from 11 sites in the southern South China Sea (SCS) during August 25 to September 28, 2011. Their composition and distribution at the surface and 75 m deep depth of the ocean were studied. A total of 30 species belonging to 22 genera were identified, and 22 species of 15 genera were Tintinnids. Eutintinnus fraknoii and E. stramentus were the most common species. The other dominants were strombidiids ciliates including Strombidium conicum and S. globosaneum, which were followed by the tide form, Mesodinium pulex. Ciliates abundance ranged from 46 ind L-1 to 368 ind L-1 in the open sites, 46–368 ind L-1 at surface and 73–198 ind L-1 at 75 m deep layer. In the Yongshu reef, ciliates abundance ranged from 167 ind L-1 to 365 ind L-1 in the water column, similar to that in Sanya coral reef waters. Ciliates composition showed obvious difference between surface and 75 m deep layer at station S2 (P < 0.05), while no similar result was observed at other sites. At 75 m deep layer, salinity was negatively related to mixed layer depth (P < 0.05), but positively to chlorophyll a concentration (P < 0.05), indicating that the change of vertical mixing in water column influenced vertical distribution of ciliates in the southern SCS. © 2016, Science Press, Ocean University of China and Springer-Verlag Berlin Heidelberg.


Gu Y.-G.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Gu Y.-G.,Key Laboratory of South China Sea Fishery Resources Development and Utilization | Gu Y.-G.,CAS South China Sea Fisheries Research Institute | Lin Q.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | And 14 more authors.
Marine Pollution Bulletin | Year: 2015

We investigated the total concentrations of heavy metals in surface sediments and nekton, along with sediment metal chemical partitioning in Qinzhou Bay of the Beibu Gulf. Cd was preferentially associated with the acid-soluble fraction and Pb mainly with the reducible fraction, whereas a major portion of Cr, Ni, Cu, and Zn was strongly associated with the residual fractions. A principal component analysis (PCA) in sediment metal speciation revealed three groupings (Cd; Pb; Cr, Ni, Cu, and Zn) that mainly resulted from different distributions of the metals in the various fractions. The Cr concentrations in nekton species were higher than maximum Cr concentrations permitted by the Chinese National Standard (GB 2762-2012). Taking as a whole, surface sediments of Qinzhou Bay had a 21% incidence calculation of adverse biological effects, based on the mean probable-effects-levels quotient. A human health risk assessment indicated no significant adverse health effects from consumption of nekton. © 2015 Elsevier Ltd.


Gu Y.-G.,CAS South China Sea Fisheries Research Institute | Ke C.-L.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Liu Q.,Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization | Lin Q.,Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization
Marine Pollution Bulletin | Year: 2016

We investigated distribution, sources, and potential risks of polycyclic aromatic hydrocarbons (PAHs) in the surface sediments from the largest mariculture base in the eastern part of the province of Guangdong in southern China. Total concentrations of ∑. PAHs were 29.38-815.46. ng/g (dry weight), with a mean of 421.48. ng/g. The composition of PAHs was characterized by an abundance of low molecular weight PAHs (2-3 benzenoid ring), and Phenanthrene (PHE), Anthracene (AN) and Fluoranthene (FA) were the predominant constituents. PAHs in this area appear to have mainly originated from petroleum sources and the combustion of grass, wood, and coal. PAHs in surface sediments of Zhelin Bay had a 9% incidence of causing adverse biological effects on aquatic organisms, according to the mean effects range-median quotient. © 2016 Elsevier Ltd.


Gu Y.-G.,CAS South China Sea Fisheries Research Institute | Gu Y.-G.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Gu Y.-G.,Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization | Ke C.-L.,CAS South China Sea Fisheries Research Institute | And 8 more authors.
Marine Pollution Bulletin | Year: 2016

We investigated distribution, sources, and potential risks of polycyclic aromatic hydrocarbons (PAHs) in the surface sediments from the largest mariculture base in the eastern part of the province of Guangdong in southern China. Total concentrations of ∑ PAHs were 29.38–815.46 ng/g (dry weight), with a mean of 421.48 ng/g. The composition of PAHs was characterized by an abundance of low molecular weight PAHs (2–3 benzenoid ring), and Phenanthrene (PHE), Anthracene (AN) and Fluoranthene (FA) were the predominant constituents. PAHs in this area appear to have mainly originated from petroleum sources and the combustion of grass, wood, and coal. PAHs in surface sediments of Zhelin Bay had a 9% incidence of causing adverse biological effects on aquatic organisms, according to the mean effects range–median quotient. © 2016 Elsevier Ltd


Yu Z.-L.,CAS South China Sea Fisheries Research Institute | Yu Z.-L.,Guangdong Provincial Key Laboratory of Fishery Ecology and Environment | Yu Z.-L.,Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization | Lin Q.,CAS South China Sea Fisheries Research Institute | And 12 more authors.
Marine Pollution Bulletin | Year: 2016

Spatial and temporal distributions of polycyclic aromatic hydrocarbons (PAHs) were investigated in Eastern Guangdong coast, China. Total PAH concentrations in oysters ranged from 231 to 1178 ng/g with a mean concentration of 622 ng/g dry weight. Compared with other bays and estuaries, PAH levels in oysters were moderate. Spatial distribution of PAHs was site specific, with relatively high PAH concentrations observed in Zhelin Bay and Kaozhouyang Bay. Based on the Spearman test analysis, only PAH concentration in oysters from Jiazi Harbor showed a significant increasing trend (P < 0.05). Three-ring PAHs were the most abundant, accounting for 54.2%–88.4% of total PAHs. Diagnostic ratios suggested that PAHs were derived mainly from petroleum origin. BaP and ∑4PAH concentrations were well within the European Union limits (5 ng/g and 30 ng/g wet weight, respectively). The incremental lifetime cancer risks (ILCR) for PAHs were < 10− 5, indicating that the adverse health risks associated with oyster consumption in this area were minimal. © 2016 Elsevier Ltd

Loading Guangdong Provincial Key Laboratory of Fishery Ecology and Environment collaborators
Loading Guangdong Provincial Key Laboratory of Fishery Ecology and Environment collaborators