Paternal Association of Increased Susceptibility to Viral Haemorrhagic Septicaemia (VHS) in Rainbow Trout (Oncorhynchus mykiss)

1991 ◽  
Vol 48 (7) ◽  
pp. 1188-1191 ◽  
Author(s):  
P. Kaastrup ◽  
V. Hørlyck ◽  
N. J. Olesen ◽  
N. Lorenzen ◽  
P. E. Vestergaard Jørgensen ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Regression Coefficients ◽  
Partial Regression ◽  
Haemorrhagic Septicaemia ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Gynogenetic Offspring ◽  
Strain Dependent ◽  
Increased Susceptibility

Farming of rainbow trout (Oncorhynchus mykiss) in Europe is hampered by unacceptably heavy losses due to the severe infectious disease viral haemorrhagic septicaemia (VHS). Strain-dependent variation of VHS resistance exists. A long-term breeding programme to increase VHS resistance in rainbow trout has been started in Denmark. This programme will be based on experimental VHS challenge of the parental fish (n = 84) as well as their normal and gynogenetic offspring (16 fullsib F1 groups). We found a paternal influence on the average VHS resistance of the offspring; partial regression coefficients for sire-offspring were estimated at 0.30 ± 0.09 and for dam-offspring at −0.1 ± 0.12.

scholarly journals Long-term exposure to low 17α-ethinylestradiol (EE2) concentrations disrupts both the reproductive and the immune system of juvenile rainbow trout, Oncorhynchus mykiss

2020 ◽  
Vol 142 ◽  
pp. 105836
Author(s):  
Kristina Rehberger ◽  
Elena Wernicke von Siebenthal ◽  
Christyn Bailey ◽  
Patrick Bregy ◽  
Melanie Fasel ◽  
...  
Keyword(s):  
Immune System ◽  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Juvenile Rainbow Trout ◽  
Rainbow Trout Oncorhynchus Mykiss

Long-term primary culture of epithelial cells from rainbow trout (Oncorhynchus mykiss) liver

1995 ◽  
Vol 31 (5) ◽  
pp. 367-378 ◽  
Author(s):  
Gary K. Ostrander ◽  
James B. Blair ◽  
Beverly A. Stark ◽  
Garry M. Marley ◽  
Wesley D. Bales ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Epithelial Cells ◽  
Oncorhynchus Mykiss ◽  
Primary Culture ◽  
Rainbow Trout Oncorhynchus Mykiss

Branchial Morphological and Endocrine Responses of Rainbow Trout (Oncorhynchus mykiss) to a Long-Term Sublethal Acid Exposure In Which Acclimation Did Not Occur

1993 ◽  
Vol 50 (1) ◽  
pp. 198-209 ◽  
Author(s):  
Céline Audet ◽  
Chris M. Wood
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Chloride Cell ◽  
Chloride Cells ◽  
Physiological Data ◽  
Mucous Cells ◽  
Diffusion Distance ◽  
Cell Numbers ◽  
Rainbow Trout Oncorhynchus Mykiss

Changes in branchial morphology and in plasma Cortisol, adrenaline, and noradrenaline were quantified throughout an 81 -d exposure of rainbow trout (Oncorhynchus mykiss) to sublethal acidity (pH 4.8) in artificial soft water and after a 5-h acid challenge (pH 4.0) of naive fish and 81-d acid-preexposed fish. Changes in branchial morphology at pH 4.8 were generally very mild and characterized by slight increases in filamental mucous cells and decreases in lamellar mucous cells. Chloride cell numbers and branchial Na+–K+- and total ATPase activities did not change. The filamental epithelium thickened, but the water–blood diffusion distance in the lamellae decreased during chronic exposure. Cortisol was significantly elevated throughout whereas catecholamines exhibited relatively little response. Response to acute pH 4.0 challenge was similar in naive and 81-d acid-exposed fish: epithelial damage, increase in visible mucous cells, loss of chloride cells by necrosis, and high cortisol levels but no changes in lamellar or filamental epithelial thickness, diffusion distance, ATPase activities, or catecholamine levels. Previously reported physiological data from these same trout demonstrated that sensitization rather than acclimation had occurred. Therefore, these observations support the view that acclimation does not occur in the absence of significant branchial damage and repair.

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