0:00
all right uh the most controversial
0:02
thing that you talked about last time on
0:04
the show and we'll talk about it again
0:06
now um was the retention of oversized
0:10
fish oversized in the sense of uh 18 in
0:15
above do you recall that little
0:17
conversation that we had um I was
0:19
probably talking about
0:23
um probably talking about how there's
0:27
been C certain Trends in in Fisheries
0:30
management right for Walley for example
0:32
when I started the business um it was
0:35
all well we should have minimum sizes we
0:37
should protect the small
0:39
fish and then we realized well we're
0:41
were hitting some of these Fisheries
0:43
pretty hard the the number of spawners
0:46
was you know getting close to a a
0:49
concern point and we started talking
0:51
about hey you need to have a certain
0:53
number of spawners in the population to
0:55
sustain The Fishery and I think I think
0:59
right now we're in this period of oh we
1:01
got we got to release the big
1:03
fish um we got to release those big fish
1:07
the females have eggs and I'm well
1:10
one one if we we're taking our mammal
1:14
approach to fish right A W female is
1:20
10 10 to 100,000 eggs you know in the
1:25
spring and if every one of those eggs
1:27
for the population survive
1:30
you're going to have no water
1:32
available you know when they sure it's
1:35
it's just we can't take that oh that
1:38
deer mammal kind of philosophy how we're
1:42
thinking about management and apply it
1:44
to fist where their whole reproductive
1:47
strategy of w is to bomb the shore bomb
1:50
the riv River riffles with with eggs and
1:54
hope maybe you half of 1% Will Survive
2:00
to um to hatch and and and recruit into
2:04
the fishery so I might have been
2:06
starting there but at the same time I
2:09
was talking about um or might have been
2:12
talking about of the fact that people
2:14
believe as the number of female or large
2:18
Walley increase the number of um small
2:22
Walley will will be available right it's
2:24
a linear thing if I got more females
2:28
large small is coming up so why doesn't
2:32
that make any sense I me why are we
2:34
thinking linearly like that right do you
2:37
have a clue none no all right
2:41
Dean Dean's cheating Dean was cheating I
2:45
either well well okay it's an ecosystem
2:49
there's always limits right I can't go
2:51
on infinitely straight up I'm going to
2:55
hit a threshold a carrying capacity of w
2:58
so that can't be linear has to curve and
3:02
for Walley once you get a certain number
3:04
of females or certain number of large
3:07
Walley it actually declines so the
3:10
number of fish young fish that are going
3:13
to go into the fishery is declining with
3:16
that large population of large fish and
3:19
that's because of what Paul two things
3:23
one is that you got this large
3:25
population they're competing against the
3:27
small fish that they're producing so
3:30
there's less forage for them right and
3:32
second those large walleye are going to
3:36
consume young Walley because they're
3:38
just prey right so that's called
3:40
cannibalism right so those two factors
3:43
mean um that if you have this large
3:47
abundance of of large fish in the
3:50
population you're going to see less
3:52
reproduction in recruitment of small
