The longitudinal gradient prevails over local characteristics in shaping fish species distributions in a large neotropical reservoir
January 2026
In large reservoirs, spatial gradients are the primary drivers of fish species distributions. However, local characteristics can also influence fish distributions and assemblage structure. We assessed...
Diet analysis reveals key prey of a Critically Endangered waterbird in aquatic farming habitat
Available online 17 January 2026
Aquatic farming may provide compensation for the loss of wildlife habitat, however the dietary composition of endangered waterfowl within these modified environments remains poorly understood. The range...
Toxicity and hazard assessment of neonicotinoids on freshwater invertebrates and fish
Available online 17 January 2026
Neonicotinoids (NNIs) are a class of systemic insecticides that have gained widespread use in industrial and agricultural applications since the 1980s, raising growing environmental concerns due to...
Single-cell RNA sequencing reveals CD8α+ cell heterogeneity and immunity in vaccinated flounder (Paralichthys olivaceus)
Available online 17 January 2026
CD8+ cells play a key role in the immune response of fish, but the specific mechanism by which they participate in protection after vaccination remains unclear. In this study, the CD8α molecule in flounder...
SCA-22 capsules resist Aeromonas hydrophila through enhanced resistance and maintained microbial homeostasis in Megalobrama amblycephala
Available online 16 January 2026
Given the challenges of enzymatic degradation and low bioavailability in oral cytokine delivery for aquaculture, this study developed sodium alginate/carboxymethyl chitosan/astaxanthin (SA/CMCS/ASTA,...
High-resolution holographic reconstruction combined with fluorescence microscopy to identify unwanted Chlorella sp. cells in Haematococcus pluvialis cultures
Available online 16 January 2026
This study evaluated the performance of HOLODETECT HiRes + FLUOR3, a laboratory instrument designed for detecting and counting small particles or cells in fluids using fluorescence. The test species...
Applications and challenges of dsRNA-mediated RNAi in aquaculture
Available online 8 January 2026
Aquaculture plays a vital role in the global food supply but continues to face considerable challenges, including frequent disease outbreaks, low production efficiency, and environmental pollution....
Toxicity of nano- and microplastics on marine and freshwater fish: A multi-scale perspective from organ systems to cells
Available online 8 January 2026
Nano- and microplastic pollution is increasingly recognized as a global threat to aquatic organisms and human health. These plastics are widespread in both marine and freshwater environments and pose...
Imidacloprid pesticide alters anti-predator responses in a water flea (Daphnia sinensis)
Available online 8 January 2026
Organisms develop inducible defense strategies to combat predators, altering behaviour, morphology, and life history to minimize predation risk. However, environmental stressors, such as contaminants,...
Elevational and anthropogenic gradients drive divergent assembly mechanisms of free-living and particle-attached bacterioplankton in Chinese lakes
Available online 8 January 2026
Understanding the assembly mechanisms of bacterial communities is pivotal for deciphering biogeochemical cycles and ecosystem functioning in lacustrine systems. However, systematic comparisons of community...
Ecological niche shifts and climate-driven expansion of invasive Pomacea spp. (Caenogastropoda: Ampullariidae) in China
Available online 7 January 2026
Predicting future distributions of invasive species provides a proactive management approach, enabling early detection and rapid response to prevent devastating ecological and economic impacts. The...
Ecosystem functions of freshwater biofilms: Progress and prospects
Available online 5 January 2026
Freshwater biofilms are ubiquitous in freshwater environments and are a common way of life for microorganisms in aquatic environments. Although their impacts on ecosystem function and ecosystem services...
Characteristics and influencing factors of greenhouse gas emissions from tidal flat pond aquaculture
Available online 3 January 2026
Greenhouse gas (GHG) emissions from aquaculture have garnered global attention. Tidal flat pond aquaculture, as a major utilization of tidal flat resources, remains understudied regarding its characteristics...
Characterizing cuproptosis-like cell death in Tetrahymena thermophila: Metabolic dysfunction, oxidative stress, and mitochondrial fragmentation
Available online 19 December 2025
Copper homeostasis is critical for cellular function, yet its dysregulation triggers cytotoxicity through poorly defined mechanisms. Recent studies have identified cuproptosis, a novel copper-driven...
An anti-light interference-based appetite evaluation method for pond fish using an enhancing behavioral feature and temporal convolutional network
Available online 18 December 2025
In aquaculture, accurate assessment of fish appetite is crucial for developing effective feeding strategies. However, variations in lighting conditions in outdoor ponds can lead to unstable image quality,...
Intermittent hypoxic training remodels the hepatic mitochondrial network and upregulates ANT expression to enhance hypoxia tolerance in Micropterus salmoides
Available online 8 December 2025
Oxygen is critical for life, and aquatic organisms are especially susceptible to hypoxic stress caused by environmental fluctuations. However, the mechanisms underpinning their tolerance to hypoxia...
cdk2 is essential for synapsis completion and gametogenesis in zebrafish
Available online 3 December 2025
Cyclin-dependent kinase 2 (CDK2), encoded by the cdk2 gene, facilitates the G1/S transition, a pivotal phase for DNA replication during cell proliferation. While cdk2 is widely expressed in mice, its...
Single and multiple stressors alter phytoplankton biomass and diversity with contrasting responses of Bacillariophyta and other phytoplankton
Available online 3 December 2025
Shallow lakes provide vital ecological services yet face escalating threats from climate warming, eutrophication, and imidacloprid pollution. Understanding how these stressors individually and interactively...
Antagonistic activity of Bacillus velezensis L09 isolated from crocodile gut against Aeromonas dhakensis: Mechanisms and potential for aquaculture applications
Available online 3 December 2025
The global aquaculture industry is facing increasing threats from multidrug-resistant pathogens, particularly Aeromonas dhakensis, which causes septicemia in crocodiles, causes severe infections in...
Physiological and growth responses of marine diatoms under different culture temperature
Available online 3 December 2025
The neurotoxin β-N-methylamino-L-alanine (BMAA) produced by marine diatoms has been implicated in the progression of neurodegenerative diseases. In this study, the physiological and growth responses...
Temporal hedonic regulation of feeding behavior in rainbow trout: a role for the opioid system under plant-based diets from first feeding onward
Available online 3 December 2025
In rainbow trout (Oncorhynchus mykiss), early exposure to plant-based diets devoid of fishmeal and fish oil may alter feed intake and affect both nutrient sensing and reward pathways. While homeostatic...
The mechanisms of farnesoid X receptor-mediated protection against high-fat diet-induced hepatic lipid deposition in yellow catfish (Pelteobagrus fulvidraco)
Available online 28 November 2025
High-fat diets (HFDs) are frequently used in aquaculture to enhance feed efficiency, yet they often induce hepatic steatosis by disrupting the balance between lipogenesis and lipolysis. In mammals,...
Detection assay improvements and distribution analyses of the invasive diatom Cymbella janischii from environmental DNA
Available online 27 November 2025
Recently, invasive species have become a major concern, and countermeasures are now part of the United Nations Sustainable Development Goals. Environmental DNA (eDNA) analysis, which enables high-sensitivity...