Results 51 to 60 of about 35,906 (203)

Presence of 6PPD-quinone in runoff water samples from Norway using a new LC–MS/MS method

Frontiers in Environmental Chemistry, 2023
The chemical 6PPD-quinone is highly toxic to some fish species of the Oncorhynchus and Salvelinus genera and is the oxidation product of the common car tire additive 6PPD.
Fedor Kryuchkov, Anders Foldvik, Roar Sandodden, Silvio Uhlig, Silvio Uhlig   +4 more
doaj   +1 more source

Freshwater hydrology emerges as the strongest predictor of phenological variability in a Southeast Alaska steelhead trout (Oncorhynchus mykiss) population

Journal of Fish Biology, EarlyView.
Abstract Phenological variation, such as the migration trends of salmonids, may provide resilience in changing environmental scenarios, influencing individual survival and population productivity. Phenological shifts may be particularly consequential for anadromous species that rely on seasonal cues for migration between freshwater and marine habitats ...
Juliana C. Cornett, Charles D. Waters, Krista M. Nichols, Frank P. Thrower   +3 more
wiley   +1 more source

Phenotypic Florfenicol Resistance in floR‐Harbouring Flavobacterium psychrophilum Isolates (CC‐ST90): A Case Study From Danish Freshwater Rainbow Trout Aquaculture

Journal of Fish Diseases, EarlyView.
ABSTRACT Monitoring antimicrobial resistance (AMR) in fish pathogens is essential for supporting sustainable aquaculture. In this study, susceptibility testing and genome sequencing were used to characterize the AMR profile of seven Flavobacterium psychrophilum originating from Danish rainbow trout farms (2019–2022).
Valentina L. Donati, Lone Madsen
wiley   +1 more source

Development of a Multiplex Polymerase Chain Reaction Assay for Differentiating Three Lactococcus Species Associated With Piscine Lactococcosis

Journal of Fish Diseases, EarlyView.
ABSTRACT Piscine lactococcosis is an important bacterial disease of farmed fish. The causative agents, Lactococcus garvieae, Lactococcus petauri and Lactococcus formosensis, are closely related, which complicates species‐level identification. We developed a conventional multiplex PCR assay targeting species‐specific genes identified by comparative ...
Tomoaki Yoshino, Tomokazu Takano, Hiroki Tanno, Yukihiro Nakagawa, Yuta Matsuura, Shogo Harakawa, Hidehiro Kondo, Ikuo Hirono, Keiichiro Koiwai, Tomomasa Matsuyama   +9 more
wiley   +1 more source

Opportunistic Feeding and Parasite Assemblages in Sei Whales (Balaenoptera borealis) From Southern Chile Revealed by DNA Metabarcoding

Ecology and Evolution, Volume 16, Issue 10, October 2026.
This study represents the first metabarcoding‐based description of prey composition and parasite‐associated taxa in stranded sei whales from southern South America. ABSTRACT Balaenopterid whales are major consumers in pelagic ecosystems and play a fundamental role in marine food webs.
Daniela Haro, Guillaume Schwob, Luis Bedriñana‐Romano, Valentina Bernal‐Durán, Benjamín Cáceres, Rodrigo Hucke‐Gaete, Miguel Cáceres, Olivia Blank, Camila Calderón‐Quirgas, Mauricio Ulloa, Francisco Viddi   +10 more
wiley   +1 more source

Cost‐Effective Quantitative PCR Assays for the eDNA‐Based Detection of Three Sympatric Salmon Species

Environmental DNA, Volume 8, Issue 5, September‐October 2026.
We developed species‐specific dye‐based qPCR assays for three sympatric Northeast Asian salmonids (Oncorhynchus keta, O. masou, O. gorbuscha). After validating primer specificity, we used field eDNA to map their spatiotemporal distributions, offering cost‐effective, reliable tools for salmon conservation management.
Si‐Yu Zhang, Ziyuan Sun, Mi Wang, Xuwang Yin, Meng Yao   +4 more
wiley   +1 more source

Prey group cohesion mediates the outcome of predator–prey interactions under artificial lighting

Functional Ecology, Volume 40, Issue 9, Page 2818-2829, September 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The highest rates of piscivorous predation in the field have been recorded during crepuscular light levels associated with sunrise and sunset or artificial lighting at night (ALAN).
Jessica R. Frey, Benjamin P. Burford, Rebecca R. Robinson, Lance K. Takata, Brendan M. Lehman, Cyril J. Michel   +5 more
wiley   +1 more source

Functional Analysis of the Cyclin E Gene in the Reproductive Development of Rainbow Trout (Oncorhynchus mykiss)

Biology
As a commercially valuable aquaculture species, rainbow trout (Oncorhynchus mykiss) urgently require solutions to growth inhibition associated with reproductive development.
Enhui Liu, Haixia Song, Wei Gu, Gaochao Wang, Peng Fan, Kaibo Ge, Yunchao Sun, Datian Li, Gefeng Xu, Tianqing Huang   +9 more
doaj   +1 more source

Take my breath away: Defining the oxygen saturation threshold for fish cortisol stress response

Journal of Fish Biology, Volume 109, Issue 3, Page 1760-1770, September 2026.
Abstract Human activities are affecting the number, size and severity of hypoxic zones in aquatic ecosystems. As oxygen is one of the most important abiotic factors affecting fish biology, exposure to low levels of dissolved oxygen may lead to a reduction in fitness.
Sébastien Alfonso, Benjamin Geffroy, Pierluigi Carbonara, Lola Toomey, Eduardo Bessa   +4 more
wiley   +1 more source

Attraction of migratory inanga (galaxias maculatus) and koaro (galaxias brevipinnis) juveniles to adult galaxiid odours [PDF]

, 2003
The response of migratory galaxiid juveniles, inanga (Galaxias maculatus) and koaro (G. brevipinnis), to the odours of adult galaxiids was tested in a two-choice chamber apparatus. Both conspecific and heterospecific odours were tested. Inanga juveniles
Cindy F. Baker, Hicks, Brendan J., Brendan J. Hicks, Baker, Cindy F.   +3 more
core   +1 more source