Let me explain something I didn’t say above.
Many, if not most, of those fish that are between 20-22″ are females. They still have more than a few years of productive spawning ahead of them.
Right now in the lake, according to the data we just recieved, all the year classes of fish between 16″ and 21″ are very low compared to the median for the lake thru history. Those sizes are the exact sizes we all are targeting for harvest every time we go out fishing, so those numbers are going to keep getting smaller until those fish that survive long enough to grow over 22″ are saved from harvest.
Why should we keep the harvest pressure on that already largely depleated segment of fish any longer than we need to by allowing additional harvest from 20-22″?
Imagine if you will a bar graph, and in the middle of it there are 7 lines that are anywhere from 25%-80% shorter than the rest of the bars on the graph. That is a valley in the year classes of walleyes in Mille Lacs today. That valley is sitting on the graph exactly whare the highest peaks for the population SHOULD be. That valley is going to get even deeper and wider if we don’t make some adjustments NOW!! In a couple years, that deep wide valley is going to be the primary spawning classes of that lake, and with those greatly depleted numbers, we might end up with little if any spawning in that lake for several years because there just won’t be enough spawners to sustain the population. Even the DNR biologists last year expressed some concern about the number of spawning year classes we have in the lake. They say we need to keep a minimum of 7 for safe natural reproduction. Right now we have 13, and expect to loose 5 over the next couple years, which would bring us down to 8. What if those 8 year classes in numbers are only a faction of the numbers we need to sustain the lake?
Another problem with keeping too many large fish in the system is forage. We all remember the suicide bite a few years ago. That happened because there wasn’t enough food in the lake. That can easily happen again. If the population of the lake is “top heavy” with all these larger fish, it could be a major problem. Those larger fish eat more, and are considrably more aggressive than the smaller fish, so the first casualties of any food shortage will be the smaller year classes, if not for starvation, then because they became the food for the larger walleyes.
FYI, 2005 was the best harvest state anglers have had since the suicide bite in 2002, and that total was still 51% below what we were allowed to harvest. In 2004 we were -79%, and in 2003 we were -85%. Also, DNR data shows us that walleyes between 22″ and 27″ are all well above the historical medians, anywhere from 30%, to as high as 200% in some cases!!