
FWP biologist Dave Fuller
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FWP biologist Nate McClenning
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FWP biologist Matt Jaeger
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Ask a biologist
Here's your chance to ask a professional fisheries biologist anything you want about fish on the Missouri River or elsewhere. Just tell us who you are, where you're from and e-mail your questions -- or ask your teacher to e-mail them -- to: Missouri River Adopt-A-Fish. We'll answer as many of them as we can and post them on this page. Here are some of the questions we've received so far:
When would be a good time to try to snag a paddlefish this year at intake? Does the run differ year to year? If so what are some of the factors involved? -- Mr. Bartos' 7th grade, Poplar, Montana
The paddlefish season is likely shaping up to be fairly good. The number of fish we see at Intake Diversion on the Yellowstone River is closely tied with river flows; high flows result in lots of fish. Our snowpack is around average and we've gotten a couple spring storms so we could have a decent year. The real key is that we have high flows before and coinciding with the paddlefish season (May 15th). A useful site to check on flows is:
http://waterdata.usgs.gov/mt/nwis/current?type=flow
Scroll down to the Yellowstone River at Sidney; if the flows are at or above average leading up the season, which they are, fishing will likely be good. Last year fishing was excellent, catches were predominately younger males, and the harvest quota of 1000 fish was reached quickly. We could be on track for a similar season this year so if folks want to harvest paddlefish it'd be worth getting there early. Catch and release fishing is allowed at Intake until the end of the season (June 30).
Recruitment (the number of young paddlefish that reach maturity) is closely tied to reservoir levels at Sakawea Reservoir. The large number of young males we're seeing now coincide with the high reservoir levels that occurred in the late 1990's. Males mature (9 to 10 years) and begin spawning migrations earlier than females (16 to 17 years) so we should start to see good numbers of females from the same late 90's year classes in the next few years. However, after those good water years we had 10 years of drought, which means there might be a 20 year lag before we see another good year class. Long times to maturity and variable recruitment success are the reasons that paddlefish quotas were established and harvest is closely regulated to prevent overfishing.
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Biologist Matt
We wondered what the barbels on a pallid sturgeon are for. -- Mrs. Crooks' fifth graders, Meeteetse, Wyo.
Barbels on pallid sturgeon, shovelnose sturgeon, and catfish are used to taste. This very sensitive "distant touch" sense affords fish the ability to find prey items in murky waters. Exterior taste buds are common in many fishes; catfish have taste receptors on their skin, fins, and barbels as well as in their mouths. In addition to barbels, sturgeons also have ampullary organs on the underside of their flat-bottomed snouts that allow them to detect electrical impulses of prey items. The presence of these sensory organs help make sturgeons very effective "benthic cruisers" that feed by finding patches of prey and then sucking it up. Pallid sturgeon eat mostly fish and shovelnose sturgeon primarily feed upon aquatic insects. --
Biologist Matt
We enjoyed hearing about Smokey. We want to know more about him and how your training is going? How old is Smokey? How long have you been training him? How did you come up with this idea of training Smokey? Has Smokey ever jumped out of your boat to fetch a fish? -- Mrs. Crooks' fifth graders, Meeteetse, Wyo.
I think Smokey is six or seven years old now (I just can't remember which). I got him as a puppy from a friend in Malta, Montana. We used to have a springer spaniel named Scoop, but he passed away, and Smokey was our new dog. My wife Carol said a black Lab would be just fine, just as long as he didn't get too big. Well............... I suppose I fibbed a bit. I said, "Naw, he won't get REAL big."
Smokey is somewhere between 90 and 100 pounds. He's a pretty big Lab.
I take Smokey hunting for grouse and pheasants with me. But I really like to fish, too. So he started coming along with me in my boat when I fished for walleyes, bass and northern pike. And he'd walk along the streams and rivers with me when I went fishing for trout. Every time I hooked a fish, he got real excited. So I thought, if he's as interested in fish as he is in birds, why not try to train him to be a fish pointer? We've been working on it ever since. Sometimes he forgets what he's supposed to do and falls asleep in the bottom of the boat. Sometimes he takes a nap when I'm fishing for trout, too. But for some reason, he always wakes up when I stop for lunch. I think he figures that the last corner of my sandwich belongs to him. He likes it when I share my bag of chips. And he even eats bits of apples and carrots.
So is he a good fish pointer? Not yet, I guess. But we're working on it. And we always seem to have a good time when we go hunting and fishing together. -- Mark (and Smokey)
How are you going to modify Fort Peck dam? -- Miles City Sacred Heart School
Actually, there are no plans to modify Fort Peck Dam. What is currently
proposed is to modify the operation of the dam to make the flows and water
temperature a little more fish friendly. This would be achieved by
releasing warm surface water out of Fort Peck Reservoir from the spillway.
Fort Peck Dam is somewhat unique in that the spillway structure is not
associated with the dam itself - it's located about three miles to the east.
The proposed modifications would release surface water out of Fort Peck
during late May / early June for about a four to six week period. The flows
would be gradually increased, then decreased to mimic the natural rise and
fall of the river's spring discharge back before it was dammed.
Additionally, water temperature would increase in the river since most of
the river's flow would be from the warmer, surface water being released from
the surface of Fort Peck Reservoir. Currently, the water in the river
originates from the bottom of Fort Peck before flowing through the power
houses to generate electricity. Thus, it's very cold and clear. These flow
changes would only occur about once every three years, as they must fit in
with both upstream and downstream water needs.
Why these changes? These flow modification recommendations were provided by
the U.S. Fish and Wildlife Service to the Army Corp of Engineers to help
recover pallid sturgeon, which are a federally-protected endangered species.
But, although these efforts are being directed specifically at pallid
sturgeon, certainly other native species in the Missouri River will benefit
as well.
This is just a very brief overview of what has been a controversial,
political, and at times, contentious issue. Hopefully, by working together
with all interested parties, we can make some changes that benefit the river
and the fishes that call it home.-- Biologist Dave.
Here is a list of questions that Mrs. Ashley's Kindergarten class at Miles City Sacred Heart School e-mailed to our biologists:
Where do the fish spawn?
All three species -- paddlefish, shovelnose sturgeon and blue suckers -- spawn in the mainstems of the Yellowstone and Missouri
rivers, and a few of those rivers' larger tributaries. We see far more fish spawning
in the Yellowstone River because of its warmer water temperature and higher
spring flows. These high flows seem to "cue" these species to run upriver to
spawn. Fort Peck Dam has smoothed the Missouri's flow, so it rarely has high
flows in the spring. It appears that many of the fish living in the Missouri
often migrate downstream and then up the Yellowstone to spawn, or use the
Milk River. The Milk River flows into the Missouri about nine miles below Fort Peck
Peck Dam, and is quite turbid (muddy) and warm when running high. These
three species prefer warm, turbid river flows. -- Biologist Dave.
What rivers do specific fish species travel in?
We find similar species in both the Yellowstone and Missouri rivers, but the
number of individuals we see of any one species is usually higher in the
Yellowstone. Why? The Yellowstone still has the warm, turbid flows that
these species adapted to many years ago. The clear, cold water released from
Fort Peck Dam on the Missouri is not preferred by these fish. -- Biologist Dave.
Do the fish move from one river to another?
Yes, these fish often move back and forth between these two rivers. Both rivers here really form one ecosystem for these fish -- one area where the fish can move back and forth. One
thing we hope students will learn from this study is how mobile fish
actually are. Keep checking on these fish over the next several weeks. As
the Yellowstone's flows rise, we might see some very interesting movement. -- Biologist Dave.
Do certain species like certain rivers?
Yes, for the same reasons in the answers above. They seek the areas and the rivers they like best. -- Biologist Dave.
How long do sturgeon and paddlefish live?
Shovelnose sturgeon and paddlefish commonly live upwards of 30 years! That's
pretty long for a fish, but the shovelnose's cousin - the pallid sturgeon -
wins the long-life award. They live to be more than 60 years old! -- Biologist Dave.
How long will the project last?
Missouri River Adopt-A-Fish will continue through the end of the school year with weekly updates and periodic updates after that. The biologists' project to follow the fish implanted with transmitters is scheduled to last four years, 2001 to 2004. -- Biologist Dave.
What's the goal of the project?
The goal of the project is to see how these species respond to proposed flow
modifications from Fort Peck Dam. These flow changes are proposed to occur sometime in late May or early-to-mid June. The river flow would come up and try to increase water temperature
and flows in the Missouri to make the river flow more like it did before Fort Peck Dam was created. Some questions that biologists will try to answer in the proposed project are: 1) will these
species be attracted to these warmer, higher flows in the Missouri; 2) will
spawning success for these species increase in the Missouri under these
changed flows, and 3) can biologists identify important habitats used by these fish in the
Missouri and Yellowstone rivers. -- Biologist Dave.
Will you tell us if our fish dies?
Yes, we are committed to providing all details of the lives of these fish.
If one has an untimely passing from the project, we will provide classes
with all the information we can. So far, of the 15 fish that are in Missouri River Adopt-A-Fish and were implanted with radio transmitters last fall, we've found 14 of them. As of May 2, only Paddlefish 2 is still missing. -- Biologist Dave.
Do sturgeon and paddlefish like dams?
It's hard to say that fish either like or don't like dams. But dams like Fort Peck have changed the rivers and how they flow and how clear or muddy they are and how warm or cold they are. Native fish species like the ones in our project adapted to rivers like the Missouri over many thousands of years. The dams changed the river's characteristics and habitats
in which these species adapted. Generally, these changes have led to
declines in some species, like pallid sturgeon and paddlefish, as well as other native
species. However, we all recognize the values associated with these dams,
including flood control, power generation, irrigation, and recreation, to
name just a few. Working cooperatively and taking what we learn from these radio-implanted fish, we hope that we can operate these
dams to make them a little more fish friendly, while maintaining their other
important benefits to people. -- Biologist Dave.
You say bigmouth buffalo are a fish in the Missouri River. What do they taste like? Do they taste like a buffalo? -- Mark H.
Good question, Mark. But no, they don't taste like a buffalo. Actually, they' taste a whole lot more like chicken. -- Biologist Dave
Copyright, 2002-07
Montana PikeMasters
Montana Fish, Wildlife and Parks
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