A series of dams on the Deschutes River, Oregon, act as migration barriers that segregate the river system into upper and lower basins. Proposed fish passage between basins would reunite populations of native potamodromous fish and allow anadromous fish of Deschutes River origin access to the upper basin. We assessed the potential redistribution of host-species-specific genotypes (O, I, II, III...

In this study, the complete mitochondrial genomes of Mexican golden trout, Oncorhynchus chrysogaster, and Nelson’s O. mykiss nelsoni, were assembled characterized. The mitogenomes 16,655 bp 16,661 long, respectively, composed 13 protein-coding genes (PCGs), two ribosomal RNA genes, 22 transfer (all with typical ‘cloverleaf’ secondary structures). length D-loop regions was among longest found in...

Este trabajo concentra la información bibliográfica existente acerca de las bacterias aisladas y/o identificadas a partir peces México. El análisis muestra que el estudio sanidad del país es relativamente reciente, y describe aislamiento varios géneros bacterianos obtenidos tanto clínicamente enfermos como subclínicos, con alta frecuencia oportunistas; asimismo se en última década ha confirmado...

Escaped salmonids are considered among the most serious threats to aquatic environment. One hundred and nine escape incidents were reported in Chile from 2004-2021, representing some 8.53 million escaped salmonids. Of this total, 5.73 Atlantic salmon Salmo salar (67.2%), 0.83 coho Oncorhynchus kisutch (9.8%), 1.96 rainbow trout O. mykiss (23.0%). It is estimated that 70.1% of recorded Los Lagos...

Tissue-specific expression of three L-rhamnose-binding lectins, named STL1, STL2, and STL3, in the steelhead trout (Oncorhynchus mykiss) was investigated. STL2 and STL3 mRNAs were restricted in the oocytes. In contrast, STL1 mRNA was detected only in the liver. The transcription of STL2 and STL3 started in previtellogenic oocytes. These results showed distinct expression profiles of rhamnose-bi...

Rainbow trout (Oncorhynchus mykiss) head kidney phagocytes precultured with a synthetic cytidine-phosphate-guanosine (CpG) oligodeoxynucleotide (ODN) displayed significantly higher phagocytic activity against Vibrio ordalii than phagocytes precultured with non-CpG ODN. However, head kidney phagocytes precultured with CpG ODN did not show enhanced phagocytic activity against polystyrene particles.

Periods of fasting, in most animals, are fueled principally by fatty acids, and changes in the regulation of fatty acid oxidation must exist to meet this change in metabolic substrate use. We examined the regulation of carnitine palmitoyltransferase (CPT) I, to help explain changes in mitochondrial fatty acid oxidation with fasting. After fasting rainbow trout (Oncorhynchus mykiss) for 5 wk, th...