Institute of Hydrobiology

Response of cbbL Carbon-Fixing Microorganisms to Flooding Depth During the Growing Season in Qinghai Lake Lakeshore Wetlands

Lake-level rise driven by changing precipitation is increasing inundation in littoral wetlands, but responses of cbbL-harboring carbon-fixing microorganisms remain uncertain. A controlled soil-column experiment included four hydrological regimes: unflooded soil (CK), water level...

A helix-loop-helix gene orchestrates male fate in common carp

Fish show exceptional diversity in sex-determination mechanisms, making them a powerful system for studying how these pathways evolve. However, no definitive master sex-determining gene has yet been identified in Cyprinidae, a widely distributed and species-rich fish family. Here...

Automated morphometric modelling of an endangered freshwater cetacean from unscaled UAV imagery using an internal scaling framework

With the rapid advancement of drone technology, aerial photogrammetry has been increasingly applied to morphometric research, particularly for endangered species, owing to its fully non-invasive nature. Photogrammetry-derived morphometric models (e.g., three-dimensional reconstru...

Identification of male-specific markers via 2b-RAD sequencing reveals an XX/XY sex determination system in Acrossocheilus longipinnis

Acrossocheilus longipinnis is a commercially significant aquaculture species native to southwestern China, highly favored by consumers for its excellent meat quality, high nutritional value, and abundance of polyunsaturated fatty acids. Although the species exhibits pronounced se...

Effect of Nano- and Microparticulate Fermented Fish Protein Hydrolysate Diets on Growth, Digestive Function, Intestinal Development, and Gene Expression in Common Carp (Cyprinus carpio) Larvae

The early larval stage is a major bottleneck in freshwater aquaculture because conventional live feeds are not always available for optimum nutrient availability and digestibility to satisfy the nutritional requirements of developing larvae. This study evaluated the effects of mi...

Elevation Amplifies Carrier-Type Differences in Nitrogen Cycling and N 2 O Dynamics in Lake Biofilms

Abstract Lake biofilms are microbial habitats for nitrogen transformation, but how carrier type and elevation influence N2O dynamics remains unclear. We examined abiotic- and biotic-carrier biofilms from 12 lakes spanning 4–4272 m using anoxic incubations, 15N tracing, selective...

Construction of composite biological soil crusts accelerates early-stage soil restoration in karst rocky desertification areas

Karst rocky desertification (KRD) represents one of the most severe forms of land degradation globally. Soils in these regions are characterized by structural instability, severe nutrient depletion, and fragmented microbial networks, all of which collectively impose formidable co...

Modified ppk Expression Alters Temporal Transcriptional and Phosphorus–Nitrogen Responses to Phosphate Fluctuation in Synechococcus sp. PCC 7002

Phosphate availability fluctuates widely in aquatic environments, yet how engineering the regulatory context of polyphosphate kinase affects cyanobacterial responses to such fluctuations remains unclear. Here, the wild-type strain of Synechococcus sp. PCC 7002 and Dppk, a modifie...

Three decades of microcystin-LR removal in aquatic environments: physical, chemical and biological strategies for environmental detoxification

Abstract Microcystin-LR (MC-LR) contamination from cyanobacterial blooms poses a persistent threat to aquatic ecosystems and human health, necessitating effective removal technologies. This study used visualization analyses to examine global research on MC-LR removal in aquatic e...

Effects of Different Farming Models on Muscle Nutrients, Muscle Transcriptome and Intestinal Microbiota in Pelodiscus sinensis

Farming models profoundly influence the biological traits of aquatic organisms. This study compared muscle nutrients, muscle transcriptome, and gut microbiota of Pelodiscus sinensis reared under rice-field and pond conditions. Compared with the pond group (Group P), the rice-fiel...

Beyond Morphological Conservatism: Integrative Taxonomy Unveils Remarkable Cryptic Diversity in the Tachysurus virgatus (Oshima 1926) Group (Siluriformes: Bagridae) Endemic to the Northern Margin of East Asian Tropics

The northern margin of the East Asian tropics harbors exceptional endemism, yet its freshwater fish fauna remains poorly characterized. Tachysurus virgatus, long considered a single widespread species in this region, exemplifies this taxonomic gap. Through integrative taxonomic a...