CAMDEN — Tackle-shop talk may have some anglers convinced that the recent advancements in live-imaging sonar will be the end of fishing as we know it. Research conducted by the Arkansas Game and Fish Commission may set those anglers’ minds at ease.
As technology and knowledge about wild animals and fish increase, so does the level of apprehension about whether a new tool is too efficient and could impact the resource. Some anglers have called for bans on Alabama rigs for bass fishing and spider rigging for crappie fishing. Toward the beginning of bass-fishing tournament culture’s boom, many anglers even supported the banning of the ubiquitous soft-plastic worm and now archaic flasher-style sonar units, because they were believed to give too much advantage to the angler.
Andy Yung, AGFC fisheries biologist in Hot Springs, recently shared the results of a study conducted last year on live sonar and crappie anglers, and so far there’s little evidence to support any panic on the part of anglers or resource managers.
The Crappie Crowd
“Crappie are the second most popular species targeted by resident anglers,” Yung said. “About 24 percent of resident anglers list them as their number one species. And, crappie anglers tend to be more harvest-oriented than anglers targeting black bass or trout, so if a harvest-oriented impact were to be seen it would likely show up with crappie first.”
Yung says another factor for the study was the popularity of live-imaging sonar with crappie anglers and their ability to find crappie schooled up offshore with the units.
“As a biologist and crappie angler myself, I’ve heard plenty of discussions about live sonar, some of them pretty heated,” Yung said. “As an agency, we needed to look at this in the real world and how the application of this technology may or may not impact the fishery.”
AGFC biologists conduct creel surveys and angler interviews on a regular basis throughout the state, so the best method to gather data for Yung’s study was to take advantage of the work already being conducted and add a series of questions to the interviews concerning the new technology.
Doubled-up Crappie Catch
Nearly 700 boats with well over 1,000 anglers were interviewed. More than one-third of the anglers had livescope available on their boat, proving the popularity of the technology.
“We also asked the anglers if we could count and measure their catch,” Yung said. “We wanted to find out if anglers using live-imaging sonar caught more fish, caught bigger fish, and ultimately brought more fish home to eat.”
When it comes to catching fish, the anglers that had live-imaging sonar definitely seemed to have the upper hand over those without. During the study, live-imaging anglers averaged 2.4 crappie per angler per hour of fishing effort. Those who did not have the new breed of sonar caught 1.1 crappie per angler per hour.
Cherry-picking
Some anglers are concerned that those who have live-imaging sonar are able to pick and choose targets and select larger fish, leaving fewer large fish for other anglers to catch.Those fears can be laid to rest, at least when it comes to harvest.
“When we looked at the size of fish anglers kept, the sizes of the fish kept were nearly the same,” Yung said. “Actually, the anglers not using live-imaging sonar had fish that were slightly heavier, but the difference was within an ounce or two so it was statistically irrelevant.”
Yung also says that in many fish species, the largest, oldest fish are usually less productive than some of the younger year-classes of fish, so, from a biological point of view, removal of those larger fish may not impact the fishery.
“By the time a crappie reaches the 2-pound mark, it has already spawned multiple times and contributed to the population, and it’s probably not contributing as much as some of the 10-inch fish in that system,” Yung said. “At that age, it may not make it to the next spawn anyway.”
Read more at Fishing Wire.
Watch Yung’s presentation of this study on the AGFC’s Wild Science webinar series, found at agfc.com.
