Best of 2012: 9) Gone fishin'

Atlantic salmon in circular
pool at White River National
Fish Hatchery.
Credit: Ann Froschauer/USFWS

We're bringing in the new year with a look back at our milestones for 2012. Check back each day for featured events and activities from across the Northeast!

Ever had an aquarium? You probably had no more than a handful of fish to care for. Imagine if you were raising millions and millions of fish, including a variety of species with different needs. Let's throw some freshwater mussels in there, too.

You're starting to look like a national fish hatchery, where biologists blend layers upon layers of science and technique to successfully raise and release fish and mussels that will support our waters and fishing pastime and industry.

Best of 2012: 1) Protecting and restoring our waters

We're bringing in the new year with a look back at our milestones for 2012. Check back each day for featured events and activities from across the Northeast!

Before and after aerial shots of the Great Works Dam site on Maine's Penobscot River.

Our rivers and streams connect us to just about everything we do, from drinking and energy to fishing and other recreation. Some of the water barriers that we’ve put in place to harness this precious resource, including road-stream pipes (culverts), dams and dikes, have seriously impacted wildlife and water quality. Of the estimated six million barriers across the U.S., many are now also obsolete and hazards to human health and safety.

No bait needed for this catch

The truck used by Michael's Wholesale
Bait to transport fish.

Two Massachusetts businessmen were convicted Friday of three felony charges each in federal court for unlawfully dealing in millions of dollars of live freshwater fish without the required state permits. The case illustrates the protection that state and federal wildlife law provide to our waters and wildlife – and the strong partnership vital to enforcing that protection.

In 2008, the U.S. Fish and Wildlife Service, Office of Law Enforcement was alerted by the Massachusetts Division of Fisheries and Wildlife and the Massachusetts Environmental Police that something wasn’t quite right at Michael’s Wholesale Bait of West Springfield, Mass.

Hydrilla closes in on the Great Lakes

The first collection of Hydrilla verticillata from
Tonawanda Creek. Credit: USFWS

You don’t necessarily need to be looking for an aquatic invasive species to find it. Sometimes it appears when you least expect it.

That’s exactly what happened in early September, when Lower Great Lakes Fish and Wildlife Conservation Office staff discovered Hydrilla verticillata, a highly invasive aquatic plant, in the New York State Canal System in Tonawanda, N.Y. The location was literally at the base of a boat ramp, a highly visible area that should lend itself to early discovery.

Nonetheless, it apparently went unnoticed for some time, hiding within the abundant native plants, particularly Canadian/common waterweed, a native aquatic plant similar in appearance. The distinction between the two is important, as hydrilla crowds out waterweeds and other essential plants. It slows water flow and can clog lakes and rivers enough to even eliminate swimming or boating.

Pa. mussels help restore streams in Ill., Ohio and WV

We love freshwater mussels so much that we extended our month-long series to tell you about work to restore and protect freshwater mussels and their homes in Pennsylvania. Today you're hearing from Lora Zimmerman, the assistant supervisor of Contaminants and Conservation Planning Assistance in our Pennsylvania office. This series highlights the importance of freshwater mussels to the Northeast landscape and the concerted efforts underway to ensure their future in our waters.

Pennsylvania is known for a lot of things—spectacular trout fishing, abundant energy resources, intensely rivaled hockey teams—but one of the lesser known treasures of Pennsylvania is its native freshwater mussels.  

Species almost lost elsewhere are known from the Allegheny River and French Creek in western Pennsylvania, and they are the envy of several neighboring states where the mussels have either been lost or populations are too small to survive without assistance. For example, although it remains in only five percent of its historical range, the northern riffleshell continues to have thriving populations in Pennsylvania. Likewise, the clubshell mussel also has stronghold populations in the Commonwealth.

Clubshell mussel. Credit: USFWS

Clubs, riffles and rays of New York

This post is part of a series running all month on freshwater mussels, highlighting their importance to the Northeast landscape and the concerted efforts underway to ensure their future in our waters.

 The Allegheny River basin holds globally significant populations of four species of mussels federally listed as endangered.  They are northern riffleshell (Epioblasma torulosa rangiana), clubshell (Pleurobema clava), rayed bean (Villosa fabalis) and snuffbox (Epioblasma triquetra).  

Surveys in the upper Allegheny River basin in New York and Pennsylvania have found populations of these species in the past, but portions of the mainstem Allegheny River and its tributaries remain un-surveyed or have incomplete surveys -- an obstacle to truly achieving recovery.

Diver looking for riffleshell and clubshell mussels. Credit: Jeremy Tiemann Il/Natural History Survey

Moving mussels

Cheryl Daigle from the Penobscot River Restoration Trust.

Today you're hearing from Cheryl Daigle, the community liaison and outreach coordinator for the Penobscot River Restoration Trust. This post is part of a series running all month on freshwater mussels, highlighting their importance to the Northeast landscape and the concerted efforts underway to ensure their future in our waters.

Working on a river restoration project that is focused on restoring 11 species of sea-run fish -- including the enigmatic shortnose sturgeon and leaping wonder of salmon -- offers many fascinating moments of discovery about rivers, community, and restoration of place.

Yet, I never imagined freshwater mussels would invite the depths of thought I had while helping to relocate exposed mussels to deeper habitat during the removal of the Great Works Dam and subsequent lowering of the impoundment to a natural river flow.

Giving mussels a boost in Tenn.'s Powell River

Today you're hearing from Jess Jones, a restoration biologist with the Service's Virginia Field Office, on releasing the largest group of three endangered mussels in the Powell River. This post is part of a series running all month on freshwater mussels, highlighting their importance to the Northeast landscape and the concerted efforts underway to ensure their future in our waters.

Biologist Jess Jones distributes mussels. Credit: Gary Peeples/USFWS

Every once in a while everything just works out. 

Today was such a day -- cool and sunny, an early fall afternoon on the Powell River in northeastern Tennessee, where biologists and students worked together to release endangered mussels. Heavy rains occurred the week before, but the water level dropped just in time to stock them in the river, 5,500 oyster mussels (Epioblasma capsaeformis), 1,000 Cumberlandian combshells (Epioblasma brevidens), and 27 snuffbox (Epioblasma triquetra). The young mussels were 1-2 years old and about 20-30 mm long.

Freshwater mussel conservation in western New York

This post is part of a series running all month on freshwater mussels, highlighting their importance to the Northeast landscape and the concerted efforts underway to ensure their future in our waters.

Nestled between Lake Ontario and Lake Erie in western New York, the Service's Lower Great Lakes Fish and Wildlife Conservation Office is located in an incredibly unique area. Part of the reason this area is so interesting is the high number of streams with freshwater mussels.

A native freshwater mussel found in the stream during a road-crossing survey. Credit: USFWS

Freshwater mussel populations are in decline all over the country. Pollution and habitat loss are two of the leading causes of the population decline. As the human population grows and cities spread out, more roads are built, many of which cross streams. When those road crossings are installed correctly, they cause no problems.

However, due to budget constraints and lack of training for the installers, many crossings are under-sized or incorrectly installed. This causes a major problem for fish and other critters that live in the stream. The road crossing becomes a barrier to fish migration, as well as the migration of other species, including freshwater mussels.

Taking control of sea lamprey in the Lake Champlain Basin

More than 100 years ago, a parasitic, snake-like fish hitchhiked a ride to America’s sixth Great Lake – invading the almost 500-square-mile Lake Champlain straddling Vermont and New York. At least, that’s what some say. 

Sea lamprey. Credit: USFWS

Other information indicates the fish—sea lamprey—may be native to the lake and even a resident since the last ice age. Either way, the sea lamprey grew in numbers and preyed on native fish. By the 1900s, native salmon and lake trout were no longer found in Lake Champlain. When sea lamprey impeded efforts to bring the fish back, concern grew about populations of this parasitic fish.

A single sea lamprey kills 40 or more pounds of fish in its life as a parasite. They attach to host fish and feed on their blood and body fluids, leaving a wound at risk for infection. The lamprey is often confused with eels because it is jawless, but its circular sucking disk helps to distinguish it from the American eel, which has a true jaw. Inland adults average 24 to 30 inches in length.