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Saving the Sturgeon | JONATHAN BIRD’S BLUE WORLD

Saving the Sturgeon | JONATHAN BIRD’S BLUE WORLD


Coming up next on Jonathan Bird’s Blue World, Jonathan joins a team of biologists working to save the sturgeon! Hi, I’m Jonathan Bird and Welcome to my world! Caviar is one of the most well-known delicacies in the world, an epicurean tradition dating back to the ancient Greeks and beyond. The Romans loved their caviar, and today a thousand years later, some people still go crazy for these expensive, salty fish eggs. Caviar comes from an ancient fish called a sturgeon. Sturgeon are one of the oldest families of bony fish in existence—they have been around for hundreds of millions of years. In fact, during the time of the dinosaurs, there were Sturgeon swimming around in oceans, rivers and lakes. Today, there are 27 species of Sturgeon remaining, and every one of them is endangered! In North America, Sturgeon used to be so plentiful that they were considered a nuisance to fishermen. But in the mid 1800s, the Caviar industry discovered the North American sturgeon. Within 20 years, they were nearly gone. Now, more than a hundred years later, Sturgeon stocks are only just beginning to rebound. To learn more about the Sturgeon, I have teamed up with Jen Hayes, a biologist who did her PhD work with the Lake Sturgeon in the St. Lawrence river. These days, Jen and her husband David Doubilet are underwater photographers, working on a story about the St. Lawrence for National Geographic Magazine. I tag along with Jen and David, as we explore the river where Jen grew up. We pass a huge hydro-electric dam. It generates clean, renewable power for the area. But it does have an environmental side effect. Hydro-electric dams are usually built in the parts of a river with the most vertical drop. This creates more elevation of water behind the dam to run the turbines. But the places with the most vertical drop are usually rapids, with fast moving water. And that’s exactly where sturgeon like to spawn. The rest of the river has slow water and a muddy bottom. The eggs sink into the mud and vanish. What few rocks there are get a coating of algae and plants. Not good for spawning. With no rapids, the sturgeon have no place to lay their eggs, and that has made it tough for this fish to reproduce. New York State’s Department of Environmental Conservation has undertaken an ambitious project to help increase the number of sturgeon in the river. I meet Rodger Klindt, an Aquatic Biologist with the state who is out this morning with his team. The team’s job is part research, and part midwife. They are collecting eggs from healthy sturgeon to raise them partly in captivity. Certain areas of the river have sturgeon present. Rodger and his team have set nets to capture both male and female mature sturgeon. The end of the net is marked with a red flag. The nets catch fish as they swim along the bottom, but they do not harm the fish. Gently, each fish comes aboard the boat and goes into a holding tank. They keep plenty of fresh, oxygenated water in the tank to keep the fish alive. When they have 3 or 4 fish in the tank, they head back to the dock. The fish are measured, weighed and tagged. The biologists are building a database to keep track of individual fish. If they catch them in subsequent years they can compare notes from the previous years to learn how quickly they grow. The smaller sturgeon go back into the river, where they take a few minutes to catch their breath. Sturgeon can live to be over 100 years old and weigh more than 200 pounds. While these might look like big fish, they get a lot bigger. But big ones these days are rare. Since sturgeon are not mature enough to produce eggs until they are around 20 years old, most of these fish are immature and have to go back into the river. They swim away, slowly at first, none the worse for wear. The larger fish, especially females that have a lot of eggs, go up the hill to a larger holding tank with a pump recirculating fresh water. A few mature males go into another tank. Once they have enough fish in their holding tanks, it’s time to make some baby sturgeon! First, a male sturgeon is taken from his tank where the team extracts sperm using a syringe. Then fish is set free. Once they have samples of sperm from several fish, it’s time to harvest some eggs from the females. My job is to hold the egg collection bowl as a female sturgeon comes out of the tank and her eggs are massaged from her belly. This does not harm the fish at all and immediately after this process she is set free in the river. Talk about a science project! Now the eggs are fertilized with the sperm from the male and the biologists will attempt to create the perfect conditions to produce thousands of healthy sturgeon babies. All of these eggs are going to be baby sturgeon, and that’s a lot of sturgeon to put back into the population. I’m using a feather to stir these eggs. We have added an agent in there that is sort of made of clay and we stir it around. This clay substance helps the eggs to lose their stickiness. The problem is that we don’t want sticky eggs. In the wild, sticky eggs are good because they stick to the bottom of the river but in a hatchery, sticky eggs are not good. Next the fertilized eggs go into bags to be transported in coolers to the hatchery. They will be raised there until they are about the size of your hand. Once the baby sturgeon get to be about, oh about that big, they release them here. Raising fish in a hatchery helps the dwindling stocks of sturgeon in the river, but it doesn’t do anything to address their loss of spawning habitat. Fortunately, someone is working on that problem as well. I meet Ben Lenz, an environmental scientist with the New York Power Authority. He is part of a team that installed an experimental spawning bed for sturgeon, paid for by the power authority. The location of the bed is a secret, but Ben told us how to find it. It’s quite far from a dock, and we have a lot of gear, so while Jen and David bring the boat, the Blue World team drives out into a remote area near the river to set up base camp. Soon Jen and David arrive and we load the boat for a dive on the spawning beds. Cameraman Todd is along to film the underwater action with me. Jen’s nephew Troy is captaining the boat so Jen and I can dive down to the spawning beds. There’s a lot of species on the beds right now. There’s Red Horse, that lay their eggs just ahead of the Sturgeon. And things that come on the beds to eat all the eggs—it’s like a fiesta, like a big buffet of eggs, when the Sturgeon spawn and the Red Horse spawn, you’ll have eels, there’s walleye, there’s carp galore… We’re diving close to a dam, in extremely fast moving water. This dive can be quite tricky as the current is too strong to swim against. We’ll have to jump into the water upstream from the spawning bed and drift down until we get to it. We’ll need to get lucky to hit the spawning bed. Underwater, the visibility actually isn’t bad for a river: 15-20 feet of greenish water. But the current is ripping! There is no way I can swim against it, but instead tumble along the river bottom. All I can do is follow Jen downstream. And even though the spawning bed is a third the size of a football field, we completely miss it. We surface without seeing any sturgeon. Well, we went down okay. The current was ripping! We went flying by all these rocks and stuff, getting smashed into them, bubbles everywhere, and I think we missed the sturgeon. We’ll try again! Troy positions the boat a little closer to shore, a tricky proposition in this much current. We got to get a little bit closer! On the second try, we hit it just right and the current carries us out into an area that doesn’t quite look like a natural river bottom. That’s because it’s not. The New York Power Authority created this spawning bed by dumping tons and tons of crushed rocks onto a fast-moving section of water to simulate the conditions of rapids. They hoped it would encourage the sturgeon to spawn. As we approach the beds, I start to see sturgeon everywhere. Using remote cameras towed by boats, scientists learned that sturgeon come to the beds at certain times of the year, but nobody has ever seen them actually spawning. This sturgeon is eating the algae from the rocks. Many of the sturgeon have lampreys on them. These primitive fish are like vampires, attaching themselves to a sturgeon and living off its blood. I grab onto a larger rock and cling desperately in the current, flapping like a flag in the breeze. This is definitely not an easy way to film anything. I only have one hand available for my camera and I can barely hold it in place in the water. But sturgeon are all around me. A gathering of this many fish would seem to indicate spawning, but so far there is no sign of it. A glance between the rocks shows definitely evidence of spawning: sturgeon eggs! This is why they are sticky, to cling between the rocks in the current. I can hear a strange sound. It sounds like clunking or vibrating. I suspect it’s coming from the fish, but I can’t see it. Are the fish fighting? I fight my way upstream, holding onto the rocks to pull myself against the current. Then just ahead of me, it happens! The male vibrates his body against the female. Then he releases his sperm just as the female releases her eggs! The fish are spawning! And not only am I the first person to ever see these fish spawning on the artificial spawning beds, but I have managed to somehow film it in all this current! Sperm clouds the water, fertilizing the eggs. And the eggs sink to the bottom and stick. The sound comes from the male hitting the rocks on the bottom as his body shakes! So every time I hear that sound, I know that somewhere nearby, a pair is spawning. And I hear it a lot! The spawning grounds definitely work! After a while, the current pushes Cameraman Todd and I off the edge of the spawning bed, so we call it a dive and head to the surface. Jen surfaced just before us. She and David greet us with a victory dance. We can cover a lot of river just getting our gear off and climbing onto the boat! Woo! That’s just amazing! Hundreds and hundred of sturgeon, all sort of getting together to spawn, for as far as the eye can see in every direction, which is actually only about 20 feet, there’s sturgeon looking at you! Very cool! So, at the end of a long day of battling the current to film a secret sturgeon spawning bed, we bring the boat ashore at our remote riverside camp to warm up and celebrate having proved that the sturgeon are in fact spawning on these beds. Over their millions of years on Earth, sturgeon have encountered many obstacles to survival, but humans are the greatest obstacle. From overfishing to loss of spawning grounds, the sturgeon nearly didn’t survive. But now, with efforts to propagate the species and rebuild their spawning grounds, sturgeon are making a fantastic comeback. It just goes to prove that when people put their minds to it, they can repair damage they have done to nature. It just takes a little creative thinking, and the determination to do what’s right.

100 comments

Sturgeons are long-lived, late-maturing fishes with distinctive characteristics, such as a heterocercal caudal fin similar to that of sharks, and an elongated spindle-like body that is smooth-skinned, scaleless and armored with 5 lateral rows of bony plates called scutes. Several species can grow quite large, typically ranging 7–12 feet (2-3½ m) in length. The largest sturgeon on record was a Beluga female captured in the Volga estuary in 1827, weighing 1,571 kg (3,463 lb) and 7.2 m (24 ft) long.

This is so awesome. I have designed some aquaculture facilities and a colleague I worked with was involved with sturgeon facilities. One was on the same property as a building I designed. Those are some prehistoric looking fish. The problem with getting caviar is it usually results in the death of the female when collected the traditional way. I know some work has been done to collect the eggs without killing the fish but I have been out of that loop a few years

At the same time, they figured out a way to collect caviar without harming the fish, meaning that it's renewable too!

ok, what are the fish good for? (don't take this the wrong way I think all endangered animals should be saved) I am doing a school project and I need to do shortnose sturgeons i have written they help by eating algae but i need one more thing.

sturgeons are awesome! in the shedd aquarium my sister and i were able to touch sturgeons in a tank!!! the water was cold. the sturgeon was very slimy tho.

In the province of Ontario – you can't fish for them at all. We took a trip to Quebec in search of hooking into these beautiful fish. It was quite the experience. I hope in my lifetime, these programs will replenish the stocks again for others to enjoy. https://youtu.be/8R7hoX0oHL4

HOW DO YOU KNOW IT DOESNT HURT THE FISH WHEN YOU ARE LITRTALLY MAKING IT POOP OUT EGGS THATS LIKE GIVING A MILLION BIRTHS ALL AT ONCE

I know some of you won't want to read this but:

I just want to know how your day is going and bless you and your family. Just to let you know that you should thank this guy for going all around the world to make videos for you guys.

It's sad to know that people almost wiped out such cool animal all those years ago just because they thought of them as a pest, But i'm relived and very happy that people these days are doing whatever they can to bring more of them back again.

Found your channel looking for Blue Heron Bridge footage and have been binging your wonderful video's all day since. Thanks so much. okay. break's over. got to check out the alewife run.

Little guys, I didn't know they had such a small species of Sturgeon in the U.S. The White,Black and Green Sturgeons we have in the West Coast, at the largest can grow 20 feet long and close to a ton.

I don’t know why, but I love this video so much! I think I’ve watched it about fourteen times now (yes I’ve been counting lol), and I’m still not bored! It might be because it restores my faith in humanity, like Jonathan says at the end. I know that if people put their minds to it, they can fix what they’ve broken. That’s why my YouTube name is Save Our Seas. People can do that. Thanks for this awesome video, Jonathan!

Hey Jonathan, I like writing books about sea life. (I’m hoping I can get some published). I’m currently working on a book called SOS Save Our Seas (haha that’s my YouTube name). It’s about how humans affect sea life and the oceans. I’m doing different parts with different animals (e.g. part one is a stingray named Eliza). I want to do one about sturgeon. Is it okay if the sturgeon character uses your last few lines from this video? I will DEFINITELY put you in the acknowledgments even if I can’t use your last lines. And, don’t feel bad if you say I can’t use them. It’s okay. I can find another way to say it.

Have you ever eaten seafood? Like as a kid or something? I’m just wondering cause you always say that you don’t eat seafood because fish are friends, not food. I agree with you, of course, I’m just wondering

Wow. I saw a lot of ur videos, and this one is one of the greatest!
Respect for ur work, u give many people a nice view about the real waterworld.
🙂
Try to dive with a white sturgeon.

Caught one as a teenager, I had no idea what it was. Luckily I had the good sense to toss him back, unharmed.

Lampreys can be also found in salmonoid species not just sturgeons. And caviar can be also found in female flying fish not just female sturgoens.🐟🐟🐠🐠☿☿☿☿

The artificial method leaves out selective breeding. It seems that in the spawning video they are supposed to choose a mate that meets their standard of attraction, health, and vitality. When something is that old, you shouldn't mess with it's method of reproduction. Will these randomly bred fish have the appropriate DNA to survive through multiple generations? The artificially fertilized eggs and sperm might be coming from specimens that would not have bred successfully in the wild…

One more video by the Blue World, educating me with the knowledge about the fish surviving in the artificial bed under the river.

they could have used a solar panel of many meters so it would a great advantage to the sturgeon a or use wind mell if the area is windy or anywhere windy

Warms the heart to see a hydro-electric company realising the cost of what they do & fixing it for the sturgeon (& other fish by the sound of it). Glad to know of such projects!!!

So cool you got to catch sturgeon spawning there. It’s awesome when people can come together and make a difference like that for animals and you proved it’s working!

I Love ur show,so much its good to see undewater… i have pet Fish when i'was a kid.they loves me so much… Good joB! Mr. Bird .. i Contenue watching tell i get OLD..='V'=

Did a drift dive miles above niagra falls in the niagra river and did see a sturgeon..The river is arpund 20 feet deep and very clear..The current is not too stiff ..

I like to point out here in a comment since this video is about sturgeon I caught a sturgeon two years ago in Cocke County Tennessee in the Noah Chucky River the first one and only one I've ever seen in my life until this day I still have the pictures I wish I could post them in the comments

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