Polarized-light sensitivity in rainbow trout (Oncorhynchus mykiss): characterization from multi-unit responses in the optic nerve

1993 ◽  
Vol 172 (4) ◽  
pp. 493-500 ◽  
Author(s):  
D.C. Parkyn ◽  
C.W. Hawryshyn
Keyword(s):  
Rainbow Trout ◽  
Optic Nerve ◽  
Oncorhynchus Mykiss ◽  
Polarized Light ◽  
Light Sensitivity ◽  
Rainbow Trout Oncorhynchus Mykiss

Foraging and prey-search behaviour of small juvenile rainbow trout (Oncorhynchus mykiss) under polarized light

2001 ◽  
Vol 204 (14) ◽  
pp. 2415-2422 ◽  
Author(s):  
Iñigo Novales Flamarique ◽  
Howard I. Browman
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Polarized Light ◽  
Vertical Component ◽  
Average Frequency ◽  
Polarization Sensitivity ◽  
Juvenile Rainbow Trout ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Diffuse Illumination ◽  
Prey Location

SUMMARY Several fish species appear to be polarization sensitive, i.e. to be able to discriminate a light source’s maximum plane of polarization from any other plane. However, the functional significance of this ability remains unclear. We tested the hypothesis that polarized light improves the prey location ability of free-swimming rainbow trout (Oncorhynchus mykiss) in laboratory aquaria. We found that prey location distances increased while the vertical component of prey location angle decreased under polarized compared with unpolarized (diffuse) illumination. The average frequency distribution of the horizontal component of prey location angle was more bimodal under polarized than unpolarized illumination. These results indicate that polarization sensitivity enhances prey location by juvenile rainbow trout.

Orientation of rainbow trout (Oncorhynchus mykiss) to multiple patches of linearly polarized light

2001 ◽  
Vol 79 (3) ◽  
pp. 407-415 ◽  
Author(s):  
Shelee L Degner ◽  
Craig W Hawryshyn
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Light Field ◽  
Polarized Light ◽  
Bimodal Distribution ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Linearly Polarized ◽  
Multiple Patches ◽  
Vector Orientation ◽  
Testing Paradigm

Orientation responses of juvenile rainbow trout (Oncorhynchus mykiss) to two linearly polarized light patches were examined under controlled laboratory conditions. Fish were trained to swim the length of the training tank under a polarized light field created by two linearly polarized stimuli that were oriented either parallel or perpendicular to the length of the tank. Trained fish were released in a circular tank and their angular responses were recorded. For each testing paradigm, the E-vector (electric vector) orientation of one of the two linearly polarized light patches was varied by 15° between 0° and 90°. Each fish was therefore tested in seven different paradigms in which the two E-vector orientations differed by 0°, 15°, 30°, 45°, 60°, 75°, and 90°. Rainbow trout oriented in a bimodal distribution when the two E-vector orientations differed by 0°, 15°, 30°, 45°, and 90°. These results suggest that rainbow trout perceived the two stimuli as being the same when the two E-vector orientations differed by 45° or less. Conversely, rainbow trout did not significantly orient when the two E-vector orientations differed by 60° and 75°. Rainbow trout may be able to discriminate two E-vector orientations that differ between 60° and 75°, and therefore they do not significantly orient, since they perceive two distinct E-vectors to orient to instead of one. When rainbow trout were exposed to a depolarized light field, they did not exhibit significant orientation subsequent to the E-vector cue.

The essential oils of some medicinal plants on the immune system of rainbow trout (Oncorhynchus mykiss)

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
A Ghasemi Pirbalouti ◽  
E Pirali ◽  
G Pishkar ◽  
S Mohammadali Jalali ◽  
M Reyesi ◽  
...  
Keyword(s):  
Immune System ◽  
Rainbow Trout ◽  
Medicinal Plants ◽  
Oncorhynchus Mykiss ◽  
Essential Oils ◽  
Rainbow Trout Oncorhynchus Mykiss

Nuclear distribution of genotoxic damage in rainbow trout (Oncorhynchus mykiss) sperm after cryopreservation

2014 ◽  
Author(s):  
Silvia Gonzalez-Rojo ◽  
Cristina Fernandez-Diez ◽  
Marta Lombo ◽  
Vanesa Robles Rodriguez ◽  
Herraez Maria Paz
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Genotoxic Damage ◽  
Nuclear Distribution ◽  
Rainbow Trout Oncorhynchus Mykiss
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