Characterization of Myf6 and association with growth traits in swimming crab (Portunus trituberculatus).

Background: Myogenic factor 6 (Myf6) plays an important role in muscle growth and differentiation. In aquatic animals and livestock, Myf6 contributes to improving meat quality and strengthening the accumulation of muscle flavor substances. However, studies on Myf6 gene polymorphisms in crustaceans have not been reported.

Increasing phosphorus ratios between overlying and surface water inhibits intracellular antibiotic resistance gene transformation in a large shallow lake.

The rising prevalence of antibiotic resistance genes (ARGs) in the surface waters of lakes poses a significant threat to human health. The overlying water in these lakes serves as a critical hotspot for the accumulation of ARGs in surface water. However, the mobility of extracellular (adsorbed ARGs (a-eARGs) and free ARGs (f-eARGs)), and intracellular ARGs (i-ARGs) from overlying water to surface water remains unknown.

Treatment of agricultural wastewater using microalgae: A review.

The rapid development of agriculture has led to a large amount of wastewater, which poses a great threat to environmental safety. Microalgae, with diverse species, nutritional modes and cellular status, can adapt well in agricultural wastewater and absorb nutrients and remove pollutants effectively. Besides, after treatment of agricultural wastewater, the accumulated biomass of microalgae has broad applications, such as fertilizer and animal feed.

Effects of eutrophication on the horizontal transfer of antibiotic resistance genes in microalgal-bacterial symbiotic systems.

Overloading of nutrients such as nitrogen causes eutrophication of freshwater bodies. The spread of antibiotic resistance genes (ARGs) poses a threat to ecosystems. However, studies on the enrichment and spread of ARGs from increased nitrogen loading in algal-bacterial symbiotic systems are limited.

Effects of florfenicol on the antioxidant and immune systems of Chinese soft-shelled turtle (Pelodiscus sinensis).

Florfenicol is a commonly used antibiotic for the treatment of bacterial diseases of the Chinese soft-shelled turtle (Pelodiscus sinensis). The study investigated the effects of florfenicol on the antioxidant and immune system of P. sinensis.

Microsatellite markers reveal genetic diversity and population structure of Portunus trituberculatus in the Bohai Sea, China.

The swimming crab, Portunus trituberculatus, is one of the main aquaculture species in Chinese coastal regions due to its palatability and high economic value. To obtain a better understanding of the genetic diversity of P. trituberculatus in the Bohai Sea, the present study used 40 SSR loci to investigate the genetic diversity and population structure of 420 P.

Treatment of nitrogen and phosphorus in wastewater by heterotrophic N- and P-starved microalgal cell.

Nitrogen (N) and phosphorus (P) are two major pollutants present in aquaculture wastewater, and their concentrations often do not meet discharge standards. In the present study, the N and P removal efficiency of nutrient-deficient cells (S group) was significantly higher than that of photoautotrophic cells (P group) and heterotrophic cells (H group). After incubation with wastewater, the N and P content of S group cells was significantly increased and reached a level similar to that of the P group and H group cells after 6 days of treatment.

Occurrence and distribution of antibiotic resistant bacteria and genes in the Fuhe urban river and its driving mechanism.

Antibiotic resistance genes (ARGs) in urban rivers can affect human health via the food chain and human pathogenic bacteria diffusion. Sediment can be a sink for ARGs, causing second sources of ARG contamination through diffusion. Therefore, we evaluated the effects of total petroleum hydrocarbons (TPHs) and phytoplankton on the distribution of the ARGs in the sediment and water of Fuhe river in Baoding city, China.

Microsatellite analysis of genetic diversity in wild and cultivated Portunus trituberculatus in Bohai Bay.

Background: Previous studies have revealed a reduction in the genetic diversity of P. trituberculatus in Bohai Sea. However, because swimming crabs have been released into this area for some time, it is unclear whether the release of cultured populations from the national breeding farms of swimming crabs in Bohai Bay have affected the population genetics of wild populations of P.

Donkey-derived anti-CDV IgG, as a passive immunotherapy agent, can effectively increase survival rates of the experimental CDV-infected dogs.

Background: Humoral immunity plays an important role in the prevention of canine distemper. Anti-CD virus (CDV) antibody has strong antiviral activity and is widely used in the treatment of CD. However, with the increase of CD cases, the availability of therapeutic CD antibody fell short of the clinical needs.

Physiological and transcriptional analysis of Chinese soft-shelled turtle (Pelodiscus sinensis) in response to acute nitrite stress.

Nitrite is a harmful substance in aquaculture, and has a serious impact on the survival of the Chinese soft-shelled turtle, Pelodiscus sinensis. However, the cellular responses of P. sinensis to nitrite stress have not yet been investigated.

Improving biological condition assessment accuracy by multimetric index approach with microalgae in streams and lakes.

Multimetric index (MMI) approach is a broadly used in ecological assessment because it can integrate information of various kinds of ecologically related metrics of freshwater ecosystems and provide an easily understandable score for purpose of further evaluation and managements. Accounting for natural variation and disentangling covariation between natural environmental factors and human disturbance factors are imperative for an accurate assessment. Lots of progress has been made recently on the aforementioned two aspects.

The change of accumulation of heavy metal drive interspecific facilitation under copper and cold stress.

Plant diversity has important functions in ecosystem productivity overyielding and community stability. Little is known about the mechanism causing productivity overyielding and stability under harsh conditions. This study investigated the photosynthetic response and subcellular distribution of uni- and co-cultured duckweeds (Lemna aequinoctialis and Spirodela polyrhiza) under excess copper (1.

Blue-green algae enhanced performance of diatom-based multimetric index on defining lake condition under high level of human disturbance.

Degradation of lake conditions could result from many stressors generated by human disturbance. Accurately defining lake ecological condition by multimetric index (MMI) method is of great importance for tracking source of stressors and lake management. For algal assessment, seldom have structural and functional attributes of soft-bodied planktonic algae metrics, one important dimension of biological condition, been used to develop MMI in conjunction with diatom metrics.

Studies on the transmission of WSSV (white spot syndrome virus) in juvenile Marsupenaeus japonicus via marine microalgae.

We studied the possible role that marine microalgae may play during the outbreaks of WSS (white spot syndrome). In order to elucidate the possibility of marine microalgae carrying WSSV (white spot syndrome virus), six marine microalgae (Isochrysis galbana, Skeletonema costatum, Chlorella sp., Heterosigma akashiwo, Scrippsiella trochoidea, Dunaliella salina) were co-cultured with adult Marsupenaeus japonicus infected with WSSV and were assayed daily by nested-PCR to study whether they could carry WSSV.