| genetic diversity and epidemiology of infectious hematopoietic necrosis virus in alaska. | forty-two infectious hematopoietic necrosis virus (ihnv) isolates from alaska were analyzed using the ribonuclease protection assay (rpa) and nucleotide sequencing. rpa analyses, utilizing 4 probes, n5, n3 (n gene), gf (g gene), and nv (nv gene), determined that the haplotypes of all 3 genes demonstrated a consistent spatial pattern. virus isolates belonging to the most common haplotype groups were distributed throughout alaska, whereas isolates in small haplotype groups were obtained from only ... | 2000 | 10843554 |
| genotypes and phylogeographical relationships of infectious hematopoietic necrosis virus in california, usa. | infectious hematopoietic necrosis virus (ihnv) contains 3 major genogroups in north america with discreet geographic ranges designated as upper (u), middle (m), and lower (l). a comprehensive genotyping of 237 ihnv isolates from hatchery and wild salmonids in california revealed 25 different sequence types (a to y) all in the l genogroup; specifically, the genogroup contained 14 sequence types that were unique to individual isolates as well as 11 sequence types representing 2 or more identical i ... | 2007 | 17933395 |
| prediction model for sequence variation in the glycoprotein gene of infectious hematopoietic necrosis virus in california, u.s.a. | the influence of spatio-temporal factors on genetic variation of infectious hematopoietic necrosis virus (ihnv) is an active area of research. using host-isolate pairs collected from 1966 to 2004 for 237 ihnv isolates from california and southern oregon, we examined genetic variation of the mid-g gene of ihnv that could be quantified across times and geographic locations. information hypothesized to influence genetic variation was environmental and/or fish host demographic factors, viz. location ... | 2007 | 18286806 |
| survey of pathogens in hatchery chinook salmon with different out-migration histories through the snake and columbia rivers. | the operation of the federal columbia river power system (fcrps) has negatively affected threatened and endangered salmonid populations in the pacific northwest. barging snake river spring chinook salmon oncorhynchus tshawytscha through the fcrps is one effort to mitigate the effect of the hydrosystem on juvenile salmon out-migration. however, little is known about the occurrence and transmission of infectious agents in barged juvenile salmon relative to juvenile salmon that remain in-river to n ... | 2011 | 21834329 |