Practically all manufacturers of fishing spinners offer some tens of blade design patterns and, of course, all these patterns are posinioned as effective. In fact, at the typical velocity of movement of spinners in fishing and, in turn, the corresponding velocity of blade rotation, the most part of these patterns is non-functional.

Figure given below illustrates an usable visual tester that allows you to trace how one or the other blade design pattern changes depending on the velocity of blade rotation. The tester is like an ordinary toy whirligig. Paper applications with the blade design patterns or even metal blades you would like to verify are sticked to the flat transparent sector of the tester.

 

One of the most known and applicable blade design patterns, with the silver holographic back and red spots, is shown. For illustartion, only one blade is given. In general case, you can stick two, three (placed symmetrically) or six blades, identical or non-identical.

Rotating the foregoing tester with the six red-spotted patterns, you will see with increasing the velocity of its rotation the following typical picture:

1) clear flashing of the red spots

2) merge of the red spots into the reddish circles

3) merge of the reddish circles into an aureole of lighter reddish color

4) finally, an aureole will become colorless.

For example, click here to see how Mepps spinners move (at the constant velocity) in the water.

According to the laboratory experiments (Gehres & Neumeyer, 2007; Stojcev et al., 2011), fish (goldfish, Carassius auratus) see as colored only slow-moving (2-4 cm per second) red and blue discs.

The so called critical frequency of flash fusion (CFFF) in Northern pike, Esox lucius, (28 flashes per second) and human (18-24 flashes per second) are sufficiently close (Protasov, 1978). In adult roach, Rutilus rutilus, CFFF is essentially less (16 flashes per second) (Sbikin, 1980). According to the same author, in perch, Perca fluviatilis, CFFF is higher (33 flashes per second). It means (reviwed by Protasov, 1978; Sbikin 1980) that prech are able to discriminate flashing of visual objects at the higher velocity than human, pike, E. lucius, roach, R. rutilus, and other fish.

Currently, we are looking for world manufacturers to produce the foregoing testers, printed applications and manuals. Moreover, we are interesting in co-operation with software developers to create the corresponding computer program.

Patent pending. All rights reserved, © 2012

Please address to Dr. Nick Yurchenko at fishermenadvocates@gmail.com

Basic References

Gehres M.M., Neumeyer C. 2007. Small field motion detection in goldfish is red-green color blind and mediated by the M-cone type. Visual Neuroscience 24, 399-407

Protasov V.R. 1978. Fish behaviour. The mechanisms of fish orientation and their use in fishing. Food Industry, Moscow

Sbikin Y.N. 1980. Age changes in vision of fish in connection with the peculiarites of their behaviour. Nauka, Moscow

Stojcev M., Radtke N., D'Amaro D., Dyer A.G., Neumeyer C. 2011. General principles in motion vision: Color blindness of object motion depends on pattern velocity in honeybee and goldfish. Visual Neuroscience 28, 361-370