Hamilton Reef
02-25-2004, 10:55 PM
This is great news to warm a fishery biologist's heart.
Saginaw walleye rebound
Saginaw Bay walleyes appear to have responded to a combination of factors resulting in what one researcher calls a year class of wild fish that "dwarfs anything since World War Two."
"It could be the beginning of a break through...but it doesn't mean we are there, yet," Lead researcher Jim Johnson says. "I didn't think we'd ever see it."
Then, he cautiously adds, "That doesn't mean we have all the answers."
According to Johnson, nearly 75% of the walleyes in the bay are now wild fish. More young than anyone has documented in recent times.
He credits it to a cold winter and increased predation on alewives y stocked and wild walleyes and salmon, which are also proliferating in the lake. Salmon reproduction is "shocking," he says.
There are fewer alewives than ever. Johnson says there are "close to no alewives." Alewives prey heavily on walleye (and salmon) eggs and young.
That doesn't mean stocking will end, he adds. The more walleyes the better, to keep the alewife numbers down.
Pond-reared walleyes are chemically marked, allowing researchers to distinguish between stocked and wild fish taken in surveys.
Source: North Woods Call, February 18, 2004
Saginaw walleye rebound
Saginaw Bay walleyes appear to have responded to a combination of factors resulting in what one researcher calls a year class of wild fish that "dwarfs anything since World War Two."
"It could be the beginning of a break through...but it doesn't mean we are there, yet," Lead researcher Jim Johnson says. "I didn't think we'd ever see it."
Then, he cautiously adds, "That doesn't mean we have all the answers."
According to Johnson, nearly 75% of the walleyes in the bay are now wild fish. More young than anyone has documented in recent times.
He credits it to a cold winter and increased predation on alewives y stocked and wild walleyes and salmon, which are also proliferating in the lake. Salmon reproduction is "shocking," he says.
There are fewer alewives than ever. Johnson says there are "close to no alewives." Alewives prey heavily on walleye (and salmon) eggs and young.
That doesn't mean stocking will end, he adds. The more walleyes the better, to keep the alewife numbers down.
Pond-reared walleyes are chemically marked, allowing researchers to distinguish between stocked and wild fish taken in surveys.
Source: North Woods Call, February 18, 2004