SCIENTISTS REVEAL HOT COLORS FOR TUNA LURES!!!

[jurelometer]

Flashers covered in UV tape are also Very Attractive to Salmon.

I tried posting here about electrical charges affecting the Salmon bite but no one was interested.

Maybe start a separate thread on black boxes.  I'll even pitch in a link to the study. I have a couple questions too.

Regarding "UV" tape: what is your definition of "UV"?  Note what I mentioned earlier about UV light and UV reflectivity.

I have a little bit more to add still on fish and color vision.


-J

[whalebreath]

Regarding "UV" tape: what is your definition of "UV"? 

A sick looking flash that I can actually see as long as it's not bright sunlight-if it is bright conditions I don't bother.

[Dominick]

I tried posting here about electrical charges affecting the Salmon bite but no one was interested.

We are interested.  I tried to search for your mention of electrical charge but could not find anything.  Please post in a new posting your information on electrical charge attracting fish.  Dominick

[Hardy Boy]

I use a uv spray. Reflect the light make them bite !! That's what the can says. 

Todd

[Keta]

I tried posting here about electrical charges affecting the Salmon bite but no one was interested.

We are interested.  I tried to search for your mention of electrical charge but could not find anything.  Please post in a new posting your information on electrical charge attracting fish.  Dominick

Look up "Black Box". 

A friend of mine in Alaska got a grant from the University of Alaska to research electric fields effect on salmon for commercial trolling.  The results were that controlling the elctric fields worked for the study.  I do not know if there was any follow up research.

[JasonGotaProblem]

I tried posting here about electrical charges affecting the Salmon bite but no one was interested.

We are interested.  I tried to search for your mention of electrical charge but could not find anything.  Please post in a new posting your information on electrical charge attracting fish.  Dominick

Look up "Black Box". 

A friend of mine in Alaska got a grant from the University of Alaska to research electric fields effect on salmon for commercial trolling.  The results were that controlling the elctric fields worked for the study.  I do not know if there was any follow up research.

shocking!

[whalebreath]

Great video...I think you need some dr juice scent to kick the flavor or maybe some bacon fat on the end of the hook to get them to bite

Scent is only marginally effective on trolled Salmon baits commercial fishermen in British Columbia use it very little if at all.

It seems to me that your lure is flipping around too much.  We use.....

That's wrong-any bait a Salmon can swim up to it can and will catch & kill; what you're seeing is Salmon rejecting the lure because it's getting a small electrical shock when it tries to bite it-that's why they're all turning away like that it's right there in front of you just look at what happens with a 'hot boat'.

This is an old old subject here in BC all the commercial boats run 'black boxes' that regulate the production of electric current by the passage of the downrigger wire through the electrolyte-which of course is saltwater.

Sport black boxes are available on the market or you can perform due diligence and carefully go over every source of electrical current on your boat to make it's not 'running hot' or producing too much current causing exactly what we see in that video.

This  website  by an ex-commercial fisherman has some info I use his gear and swear by it

https://lurecharge.ca/

[Keta]

Yup.  Every hull has a unique electrical charge due to dissimilar metals and the electrolyte, salt water. Aluminum hulls are higher current , a porly wired boat, usualy grounding, makes a "hot" boat and they fish porly.  Stainless cable carries the current down to the fish.

I use 300# Spectra downrigger cable and no black box and I think it helps.

[jurelometer]

I would strongly encourage a separate thread for black boxes and electric current.  This thread is about color vision in fish.    It doesn't help folk who might come by to read one topic to have to wade through another.

Thanks!

-J

[jurelometer]

I use a uv spray. Reflect the light make them bite !! That's what the can says. 

Todd

I hope Todd can get a refund on that UV spray. 

In order for a UV reflective coating to make a lure more visible to a fish that you are trying to catch, the following has to be true:

1. The target species has eyes with receptors sensitive to the UV wave length of the product.

2. There has to be enough UV light energy reaching the surface of the water from the sun.

3. The UV light wavelength must penetrate to the depths that you are fishing in sufficient quantity.

——-
Unfortunately in the vast majority of cases, we have a 0-3 score.
——-

1. Nope: Most marine species that we target do not have UV sensitive receptors, and in fact, some have chemicals in the eye to filter out UV light, as UV light is destructive to cells.  Note the paper referenced earlier  on Pacific salmon vision.

2.  Not much.  Although UV waves are powerful, UV light makes up a small percentage of the total light energy from the sun that reaches sea level.  The sections in red in the chart below show the total energy by surface area by wavelength: very little available energy from  the 360- 400 nm range that makes up UVA light.



3.  Not where we do most of our fishing.  UV light can penetrate to reasonable depths in  extremely clear water.  But it does not penetrate well in water that has stuff in it.  Especially organic  stuff.  Like algae. This water has to be relatively devoid of life, and not turbid,  Which means it has to be out in the middle of nowhere, toward the equator, and devoid of life.  Not a spot where most of us fish.  The following chart shows  the depth where 10% of the surface UVA light remains, at midday sun.  Note that most of the waters  that we fish are  masked out (white)  due to some issues  with the formula, but we can still see the penetration depth tapering off rapidly  as we move away from the equator and/or into waters with more suspended organic matter.



Source: https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1002/jgrc.20308

[Note:  I couldn't get past the paywalls to find better data for nearshore/inshore UV light penetration.  I would be grateful if anyone that finds something better  would post it]


Conclusion:  For most of us saltwater fishers, UV reflective coatings are unlikely to provide a benefit.  UV reactive colors (i.e., fluorescent) have a chance of providing a benefit at shallower depths, the shallower the better. It looks to me like most of the "UV" colors that we see on lures are actually UV reactive. 

-J

[jurelometer]

A bit more on UV reactive, AKA fluorescent colors.

When a light wave comes in contact with  an atom, the photons in the light wave interact with the electron clouds in the atom. The reaction depends on the compatibility of the two frequencies. The photon energy can be absorbed - that is why dark colored objects(less reflected light) get warmer in the sun than light colored objects.  Or the photon can get kicked back out on the same frequency that in came in on, producing a light wave of the original wavelength.  This is what causes most of the colors that we see.

And then there is fluorescence.   The photon gets kicked back out, but this time on a lower frequency. Chartreuse is a popular fluorescent color for fishermen.  That glowing chartreuse is a result of UVA through violet into blue waves on the way in, but green waves on the way out.

I don't know what causes fluorescent colors to be more vivid.  I suspect that  it is the extra energy from the UV waves that were not visible to humans, but now contributes to visible light after the wavelength change to green.


Another potential benefit to this shift is producing more vivid large wavelength colors at depth. For example, there is a saying among striped bass fishermen that "if it ain't chartreuse, it ain't got no use".  No coincidence that color perception for striped bass peaks on the yellowish side of green.  A fluorescent chartreuse lure will convert some blue light waves into a green that is more visible to the higher acuity rod cells in the striper's eye.

Same probably goes for other fluorescent colors, but they should map into the specific color sensitivity of the target species.  There is the possibility of fluorescing our way into less visibility with the wrong color choice.

The more UV light available, the more that these colors should pop. 

-J

[Brewcrafter]

We DO need a seperate thread on "black boxes" since that is something I am not familiar with.  And would now be a good time to mention we start a "scent" thread as well?  (Curse me all now!).  Scent is major voodoo for lobster fishing.... -john

[oc1]

Agreed.  Scent, motion and overall size are the important things.  Everything else is fluff.

[jurelometer]

The topic here is lure color and its relation to vision in fish.  There is a button at the top of every sub-forum for starting a new thread. I suggest giving that a try for other topics.

It is to unwieldy to have a single thread on all aspects of fish behavior that relate to catching fish.

Thanks,

-J

[Ron Jones]

Totally agree