Chinese Academy of Fishery Sciences

Surface Biogeochemical Regimes Shape Microplastic Abundance in the Eastern Indian Ocean

Abstract Open-ocean microplastic (MP) abundance is commonly reported as a contamination metric, but surface concentrations may reflect environmental redistribution, dilution, and retention in addition to source exposure. Here, we investigated surface MPs across 43 stations in the...

A Novel Alkaline-Stable Chitin Deacetylase from Chitiniphilus eburneus for Eco-Friendly Preparation of Specific Deacetylated Products

Abstract Chitin deacetylase is the key enzyme responsible for the biological deacetylation of chitin. However, its limited sources and low catalytic efficiency toward α-chitin present significant barriers to the bioproduction of chitosan. Herein, a chitin deacetylase Ce1425 sourc...

Metabolomic Signatures Uncover Domestication-Driven Hypoxia Tolerance in Common Carp (Cyprinus carpio)

Hypoxia represents a pervasive selective pressure in aquaculture systems, prompting aquatic organisms to develop distinct tolerance strategies through diverse physiological and biochemical responses. The common carp (Cyprinus carpio), a species characterized by extensive geograph...

Influence of Different Saline and Alkali Aquaculture on the Nutritional Composition, Physicochemical Properties, and Flavor Profile of Grass Carp (Ctenopharyngodon idellus)

Saline and alkali aquaculture offers a sustainable strategy to alleviate pressure on freshwater resources and ecologically ameliorate saline and alkali environments; however, information regarding the quality of aquatic products from such conditions remains scarce. This study eva...

Multi-Year eDNA Metabarcoding Reveals Fish Community Dynamics in the Jiangsu Section of the Yangtze River Mainstem Under the Fishing Ban

Environmental DNA (eDNA) metabarcoding is an efficient, non-invasive approach for surveying fish diversity in complex habitats such as large rivers. This study conducted continuous eDNA monitoring along the Jiangsu section of the Yangtze River mainstem from 2022 to 2024 to charac...

Hnf4α initiates hepatic lipid mobilization via activating fatty acid β-oxidation during starvation in tiger puffer (Takifugu rubripes)

Starvation is a natural stressor for fish, during which the liver adapts lipid metabolism to supply energy. Although our previous research clarified the effects of starvation on body composition in tiger puffer, the impact on hepatic lipid metabolism and the underlying molecular...

Stable-Isotope Differentiation of Mature Ovarian Eggs from Anadromous and Freshwater-Resident Coilia nasus

Anadromous and freshwater-resident Coilia nasus frequently share spawning grounds, yet exhibit distinct feeding habits during migration; therefore, we hypothesized that the isotopic profiles of mature eggs from these two ecotypes would differ. In the present study, a total of 102...

Rapid Detection of Spring Viremia of Carp Virus ( SVCV ) Using RAA ‐ CRISPR /Cas12a

ABSTRACT Spring viremia of carp virus (SVCV), that can infect cyprinoid and koi causing an acute hemorrhagic symptom, with a feature of widespread epidemic, which poses a severe threat to the global aquaculture industry. Given the absence of specific effective medicine or vaccine...

Species-resolved baselines reveal limited diagnostic resolution of aggregate river-fish indicators: evidence from a 16-year lower Yangtze survey

Aggregate catch and biomass are widely used to evaluate river restoration and fishery closures, but their management value depends on whether they resolve changes in the species of concern. We evaluated this diagnostic resolution using a 16-year fixed-station survey (2002–2017; 5...

Freshwater Aquaculture Dynamics in China’s Jianghan Plain Revealed by Multi-Source Satellite Imagery

The Jianghan Plain is one of the important freshwater aquaculture regions in China. Accurate information on the spatial distribution and spatiotemporal dynamics of aquaculture ponds is essential for regional ecological management. However, large-scale and accurate identification...

Warm Acclimation Modulates the Physiological Responses of Young Saccharina japonica to Marine Heatwaves

Frequent marine heatwaves (MHWs) pose significant threats to and have a profound impact on the structure and functioning of marine ecosystems. The response of marine organisms to MHWs may depend on the background temperature of their habitats. Saccharina japonica is a cold-temper...

Preliminary Kinetic Assessment of Quality Deterioration and Shelf-Life Estimation in Yellowfin Tuna Under Different Constant Storage Temperatures

The quality of yellowfin tuna is highly vulnerable to microbial proliferation, which accelerates quality deterioration and spoilage throughout storage. In this study, the dynamic changes in biogenic amines (BAs), total volatile basic nitrogen (TVB-N), and total plate count (TPC)...

Physiological, Transcriptomic, and Metabolomic Insights into Ammonia-Nitrogen Stress in the Hepatopancreas of Litopenaeus vannamei Acclimated to Low Salinity

Elevated ammonia nitrogen significantly reduces the survival rate of Litopenaeus vannamei under low-salinity conditions. Low-salinity culture is widely adopted in shrimp farming but susceptible to ammonia accumulation; however, relevant studies mainly focus on juvenile shrimp und...

Study on the Accumulation, Excretion, and Distribution of Cadmium in Mice After Dietary Exposure to Cadmium-Rich Swimming Crab Portunus trituberculatus

To investigate the patterns of cadmium accumulation and distribution in mice following oral ingestion of cadmium-enriched Portunus trituberculatus, this study selected 4-week-old ICR mice as a model organism. A control group was fed a standard diet, while an exposure group was fe...

Integrated Physiological and Multi-Omics Analysis Reveals Selenium-Mediated Drought Tolerance in Brassica napus Seedlings

Drought stress severely restricts early growth in Brassica napus, while selenium (Se) can enhance stress tolerance. This study examined how foliar sodium selenite pretreatment affects polyethylene glycol (PEG)-induced drought stress in B. napus seedlings. Seedlings were sprayed w...

A total infectome framework for resolving complex disease etiology in aquaculture

Traditional pathogen isolation can establish disease causality but often fails in complex infections involving unknown or multiple microbial backgrounds, whereas metatranscriptomics comprehensively captures the total infectome without directly resolving the primary etiological ag...

Single‐Cell Transcriptomics and Metabolomics Reveal Glutamate Dehydrogenase as a Central Regulator of Nitrogen Metabolic Remodeling During Alkalinity Adaptation in Crustaceans

ABSTRACT Alkaline environments disrupt ammonia excretion and challenge nitrogen metabolism in aquatic invertebrates, but the underlying cellular mechanisms remain unclear. To elucidate the adaptive mechanisms of crustaceans in highly alkaline environments, the responses of Macrob...

Gill histological, biochemical and transcriptomic responses of Coregonus ussuriensis to acute salinity stress

Salinity is a key environmental factor affecting the osmoregulation and physiological homeostasis in freshwater fish. Juvenile Coregonus ussuriensis has been considered a candidate species for culture in moderately saline waters, but its short-term physiological and molecular res...

Effects of artificial compound feed, mixed feeding and cannibalism of conspecifics on growth performance, physiological status and metabolic gene expression in juvenile barramundi ( Lates calcarifer )

To optimize feeding strategies for juvenile barramundi ( Lates calcarifer ), this study compared the effects of cannibalism-based feeding (CB), formulated feed (FF), and a mixed feeding regime (MIX; formulated feed combined with biological feed) on growth performance, physio-logi...