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Establishment and application of TaqMan probe-based quantitative real-time PCR for rapid detection and quantification of Ichthyophthirius multifiliis in farming environments and fish tissues.
Vet Parasitol
December 2024
Department of Ecology, Jinan University, Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, West 601 Huangpu Avenue, Tianhe District, Guangzhou 510632, PR China. Electronic address:
Ichthyophthirius multifiliis, a pathogenic ciliate, is a crucial pathogen of freshwater fish and can result in severe economic loss in the aquaculture industry worldwide. It is necessary to develop a sensitive and accurate method for detecting I. multifiliis in farming environments and fish skin and gills to protect fishes from infection of the parasite due to a lack of both safe and effective treatment drugs.
View Article and Find Full Text PDFNutrient loading as a key cause of short- and long-term anthropogenic ecological degradation of the Salton Sea.
Sci Rep
December 2024
Department of Earth and Planetary Sciences, University of California, Riverside, CA, 92521, USA.
The Salton Sea (SS), California's largest inland lake at 816 square kilometers, formed in 1905 from a levee breach in an area historically characterized by natural wet-dry cycles as Lake Cahuilla. Despite more than a century of untreated agricultural drainage inputs, there has not been a systematic assessment of nutrient loading, cycling, and associated ecological impacts at this iconic waterbody. The lake is now experiencing unprecedented degradation, particularly following the 2003 Quantification Settlement Agreement-the largest agricultural-to-urban water transfer in the United States.
View Article and Find Full Text PDFFirst Report of Accumulation of Lyngbyatoxin-A in Edible Shellfish in Aotearoa New Zealand from Marine Benthic Cyanobacteria.
Toxins (Basel)
December 2024
Cawthron Institute, Molecular Algal Ecology, Nelson 7010, New Zealand.
This study reports the first documented accumulation of lyngbyatoxin-a (LTA), a cyanotoxin produced by marine benthic cyanobacteria, in edible shellfish in Aotearoa New Zealand. The study investigates two bloom events in 2022 and 2023 on Waiheke Island, where hundreds of tonnes of marine benthic cyanobacterial mats (mBCMs) washed ashore each summer. Genetic analysis identified the cyanobacterium responsible for the blooms as sp.
View Article and Find Full Text PDFNutrient loading accelerates breakdown of refractory dissolved organic carbon in seagrass ecosystem waters.
Water Res
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Centre for Nature Positive Solutions, Biosciences and Food Technology Discipline, School of Science, RMIT University, Melbourne, VIC 3000, Australia.
Nutrient loading is a major driver of seagrass ecosystem decline and also threatens the capacity for seagrass ecosystems to act as 'blue carbon' sinks. Dissolved organic carbon (DOC) represents a crucial component of carbon storage in seagrass ecosystems, with refractory DOC (RDOC) playing a key role in long-term (millennial time scale) carbon stocks. The processes governing RDOC are heavily influenced by microbial activity.
View Article and Find Full Text PDFGenome-resolved year-round dynamics reveal a broad range of giant virus microdiversity.
mSystems
December 2024
Institute for Chemical Research, Kyoto University, Uji, Japan.
Giant viruses are crucial for marine ecosystem dynamics because they regulate microeukaryotic community structure, accelerate carbon and nutrient cycles, and drive the evolution of their hosts through co-evolutionary processes. Previously reported long-term observations revealed that these viruses display seasonal fluctuations in abundance. However, the underlying genetic mechanisms driving such dynamics of these viruses remain largely unknown.
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