Here is a post from another site that I made a week or so back! I am not posting it here to create controversy or to incite any arguments but only for informational purposes only! I ask that you check my math and resources and then answer 1 simple question.
If the cause of poor hatches and recruitment of YOY(Young Of Year)walleyes is a shortage of female walleyes and eggs why has there been no massive recruitment of walleyes from the last 7 spawns? Here is the post!!!
Titled:

"Astronomical numbers"

"Once the 2003 hatch became mature adults there were roughly 35,000,000 adult breeders in lake Erie! Now assuming that only half of those adults were females of breeding age that would be roughly 17,500,000 mature females. The average number of eggs laid by a mature female is roughly 250,000. Please read the last post in this thread in the provided link as it is my source for the average number of eggs laid per mature female."

http://ohioseagrant.osu.edu/discuss/...ic,1075.0.html

"So with 17,500,000 females laying an average of 250,000 eggs each that would be a total of 4,375,000,000,000. That is (four trillion three hundred seventy five billion) eggs laid. If only 1% hatched, that would be 43,750,000,000 fry and if only 1% of those fry lived to maturity that would be 437,500,000 (four hundred thirty seven million five hundred thousand) walleyes that would have survived into adulthood. So since those numbers have not or were not ever realized there has to be more involved than the few thousand females taken just before and during the spawn as you can see those few thousand fish would have a very minor roll in the total overall egg production.
Some more good reading based on 2003!"

http://ohioseagrant.osu.edu/discuss/...n.html#msg1644

"One more link!"

http://www.epa.gov/med/grosseile_sit...s/walleye.html