Analysis of PAHs content, source and risk assessment in surface sediments from Laizhou Bay and Bohai Bay.

To understand the levels of PAHs and ecological risks to the marine environment in Laizhou Bay and Bohai Bay, 33 sediment samples were collected in the region for analysis. PAH concentrations ranged from 98.22 ng·g (dw) to 239.

Horizontal gene transfer plays a crucial role in the development of antibiotic resistance in an antibiotic-free shrimp farming system.

Antibiotic selective pressure in aquaculture systems often results in the antibiotic resistance genes (ARGs) proliferation. Nonetheless, a paucity of data exists concerning the mechanisms of ARGs development in aquaculture systems without the influences of antibiotics. This study utilized metagenomic approaches to elucidate the dynamics and transfer mechanisms of ARGs throughout the aquaculture of Pacific white shrimp.

Antioxidant Systematic Alteration Was Responsible for Injuries Inflicted on the Marine Blue Mussel Following Strontium Exposure.

The ionic properties of strontium (Sr), a significant artificial radionuclide in the marine environment, were estimated using a stable nuclide-substituting experimental system under controlled laboratory conditions. The bio-accumulation of Sr and its impacts, as well as any possible hidden mechanisms, were evaluated based on the physiological alterations of the sentinel blue mussel . The mussels were exposed to a series of stress-inducing concentrations, with the highest solubility being 0.

Developmental toxicity in marine medaka (Oryzias melastigma) embryos and larvae exposed to nickel.

As an important trace metal, nickel (Ni) has been reported extensively in the studies on freshwater animals. However, the toxic effects of Ni on marine organisms are not clearly understood. Therefore, in order to investigate the toxic effects of Ni on the early development of marine fish, the marine medaka (Oryzias melastigma) embryos and larvae were immersed in 0.

Complete Genome Sequence of an -Acyl Homoserine Lactone Producer, sp. Strain L-A4, Isolated from Rhizosphere of in a Coastal Wetland.

The sp. strain L-A4 was isolated from the rhizosphere of in the Qinhaungdao coastal wetland in China. Here, we present the complete genome sequence of strain L-A4, which consists of a chromosome of 5,029,620 bp with a G+C content of 64.

Quorum sensing of microalgae associated marine Ponticoccus sp. PD-2 and its algicidal function regulation.

Quorum sensing (QS) systems play important roles in regulating many physiological functions of microorganisms, such as biofilm formation, bioluminescence, and antibiotic production. One marine algicidal bacterium, Ponticoccus sp. PD-2, was isolated from the microalga Prorocentrum donghaiense, and its N-acyl-homoserine lactone (AHL)-mediated QS system was verified.