Quote:
Originally Posted by The Dad Fisherman
Then why do they release Broodstock Salmon after they pass their prime from the fisheries as part of the stocking program?
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Couldn't tell you, I'm not a scientist.
Just relaying what I see anytime I put the words "fecundity, age, striped bass" or similar into Google. Interestingly though a search for "fecundity, age, salmon" immediately returns reports that some salmon DO have reduced fecundity with age while other salmon don't.
One of the first reports I came across though for Atlantic Salmon in that search concluded "Benefit of the body size was not only quantitative but also qualitative in reproduction success of River Teno Atlantic Salmon. Total number of eggs was higher in large females than in smaller ones but when the number of eggs was related to body weight there was no difference amongst females of different sizes. Instead of producing more eggs per unit of body weight, large females invest more in the egg quality than small females."
I'm sure with more digging something that counters that could be found, but again, it's easy to find articles that big (not necessarily old) Atlantic Salmon are better breeders.