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Making Sense of Scents for SMALLIES


September 01, 2017
Idid a presentation in college on salmon orientation and navigation as part of a biology class. The idea for the presentation was to explain how salmon managed to find their way back to the stream or river where they were hatched or planted years earlier. Scientists knew that the tiny salmon were imprinted with certain signposts beginning as fingerlings and eventually as smolts before they went to sea. The salmon used those cues to find their way back to the same stream as adults three or four years later.

One way was by detecting infinitesimal electrical charges that were in the water. Another way was by using their sense of smell. In one study, salmon reared in one pond were released after being imprinted with a chemical unique to that pond. Four years later when the salmon were due to return, the same chemical was dripped into a pond much farther upstream from where the salmon were originally raised and planted. An extremely large percentage of the salmon returned to the second pond. It was found that salmon could detect chemicals in the water in concentrations of parts per billion. It's likely that a school of salmon can smell an approaching killer whale or sea lions long before they can see them.

Making.Sense.of.Scents.
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There is evidence that a freshwater fish's olfactory senses are as equally acute as those of an anadromous trout or salmon. It's quite possible that a foraging smallmouth can smell a crayfish hidden in the rocks.
There is evidence that a freshwater fish's olfactory senses are as equally acute as those of an anadromous trout or salmon. It's quite possible that a foraging smallmouth can smell a crayfish hidden in the rocks or a passing school of alewives or shad long before it can see them. That's why it's important that anglers include scents in their fish-catching equation.

"I've never been a believer or proponent of scents for largemouth bass, but I'm 100% sure it makes a difference with smallmouths," said tournament pro and owner of Millennium Promotions (http://www.mpromoinc.com/) Joe Balog.

Balog said an incident he had in 2004 when Gulp! first hit the market is a good example. He was pre-fishing for a tournament and was whacking chunky smallmouths that would put him in prime position the win the tournament on the new Berkley product. By the end of the day, he'd used up the dozen Gulp! baits in the package and had resigned himself to fishing similar unscented baits. After an hour of no fish and just a few half-hearted strikes Balog was in a panic to duplicate the pattern that had refined throughout the day. He found a dried up Gulp! bait that a bass had tossed on the floor, stuck it on and went back to catching fish. More than just coincidence.

"Gulp! works differently than scents," shared Balog. "The scents in Gulp! are impregnated in the product. The scent is time released. It bleeds out of the bait by drawing in water that pushes the scent out." Balog said that the shapes that Gulp! was first available in were terrible, but the bait still caught bass and was "unbelievably effective" in spite of the crude shapes. The only trigger had to be smell.

Balog admitted that even though Gulp! is now produced in more life-like shapes, it's not as effective as it once was, at least for smallmouths. "Part of that may be due to increased fishing pressure and the fact that the bass are seeing, and smelling, that bait more often. Maybe it's because it's not the only game in town when it comes to scent-enhance baits anymore, too."

Balog said that through his research he's found that garlic scent is a positive aroma when it comes to smallmouths. "I've found that baits with a garlic scent just seem to out-produce unscented baits when it comes to smallmouths." And not just a little garlic either. "I've been fishing with a partner and when I pulled a bait out of the bag at the back of the boat they could smell it at the front of the boat. Now if a human can smell it 10 or 15 feet away just imagine how strong that scent must be in the water." Balog theorized, "Great Lakes smallmouths are a totally different animal than largemouths when it comes to scent."

Balog related an incident when he was fishing a piece of structure late in the season that was loaded with bass. He was catching one chunky smallie after another and decided to experiment. He put an unscented bait on that was the exact size, color and shape as the one he'd been using, except it lacked the garlic scent. After a dozen casts without a strike he replaced the bait with the scented one he'd been using. He caught a four-pound smallie on the first cast.

Balog said that he found commercial garlic scents that worked, but went on a quest to come up with his own concoctions. He super saturates his soft plastics with the scents and keeps them in zip-loc bags separate from other baits and even reserves specially fermented stocks for tournaments. Balog admitted that scent is a positive trigger close to 90% of the time and if nothing else gives him a psychological edge.

Scents might not only be an attractant when it comes to smallmouths, but also be a cover scent. Soft plastic baits smell like, well, plastic when they come out of the mold and scents reduce that unnatural smell. Scents also mask human smells or pheromones that may be alarming to bass. In other words, to a bass you stink! "The idea is to keep unwanted scent off your hands," said Balog. "I wash my hands with unscented products every time I fish. Most of the research that has been done with regards to bass has been done with largemouths. How much scent influences smallmouths is largely conjecture, but I've seen more than my share of coincidences. I think it's a huge factor when it comes to smallmouths."

Garlic isn't the only scent bass have shown an affinity to. Scents and scent-enhanced baits are available in coffee, salt-impregnated, shad, crayfish, anise and others. It only makes sense if you're fishing a crawfish imitation that adding a crayfish scent will add to the productivity of the bait.

There's some question about whether scent makes a difference on hard baits that are retrieved at a fast pace. Most agree bass strike a speeding, vibrating crankbait because of what they see and feel. There isn't time to smell the bait. Smallies may home in on the scent trail left by the bait though if you've applied a scent product to the lure and enhanced the illusion.

I've experienced times when scent added to hard baits made all the difference in the world. When guiding for winter steelhead I'd add Dr. Juice to crankbaits by liquefying Vaseline in boiling water, filling a film container half full of the Vaseline and the rest with Dr. Juice and then stirred the mixture up. I'd apply the paste to the backs of my crankbaits. I observed many times, especially in super cold water, when the scents made a huge difference between catching fish and going home skunked. Why not stack the odds in your favor?

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