BY OREY ECKES, GENOA NFH
Photo Credit: USFWS
Over the last few months, hatchery staff members have been finalizing additional renovations of the holding house from the 2018 walleye production season. Due to increased demand for more walleye eggs from state, tribal and federal partners, the hatchery had increased holding and hatching capacity for walleye eggs and fry in 2018. The modifications of hatching tanks and rearing space allowed the hatchery to collect nearly 70 million walleye and sauger eggs from the Upper Mississippi River for stocking in the spring of 2018.
Upgrades and renovations consisted of: A new aluminum head tank that was installed allowed for a larger available water volume to supply fish rearing tanks, increased particulate settling time and improved oxygenation. New oxygen lines had also been added to improve delivery of oxygen, create more working space, and allow for easier access to the oxygen supply tanks. Maintenance staff member, Jeff Lockington fabricated and installed egg incubation tanks and fry hatching tanks.
The new egg incubation setup allowed for incubation of over 60 million walleye eggs. Zach Kumlin, also a part of the Genoa National Fish Hatchery (NFH) maintenance team, installed flow meters wired to a control box (PLC) to allow biologists to review and manipulate flows for walleye egg treatments. He also installed a peristaltic pump for chemical treatment of eggs to reduce loss of eggs from fungus.
In 2019, staff members are hard at work installing a larger pump to increase water volume and are incorporating a sand filter into the system to remove particulates such as iron, which bind to eggs and newly hatching fry. These new modifications for 2019 will help increase eye up percentages, resulting in better survival of eggs and newly hatched fry. This new setup will allow the hatchery to produce and stock more walleye for recovery and restoration efforts. Genoa NFH staff will be on the Upper Mississippi River this spring in an effort to collect enough walleye eggs to meet our partners’ requests.
DOUG ALOISI, GENOA NFH
Photo Credit: USFWS
Since Genoa National Fish Hatchery (NFH) is centrally located, many Midwestern aquariums periodically contact us for fish for their exhibits to engage the public with. Through these exhibits, our conservation message is also relayed to the public, which helps us to complete our mission to engage the public to conserve and protect our nation’s fish and wildlife resources for the continuing benefit of the nation’s populace. We were able to do this again this spring by making available a net full of nine to ten inch coaster brook trout for display at the world renowned Shedd aquarium at Chicago, Illinois.
These fish were available because of our ongoing cooperative restoration efforts that include the waters of the Grand Portage tribe on the northern shore of Lake Superior in Minnesota. The Fish and Wildlife Service has been working with the Isle Royale National Park staff and the tribe since the mid 1990’s to return this popular sportfish to its formal prominence in eastern Lake Superior. Reservation waters receive 10,000 yearling brook trout from Genoa NFH annually.
Through these efforts and strict harvest limits along the north shore that were implemented by the Minnesota Department of Natural Resources, fall coaster brook trout surveys have indicated an increase in numbers for the recent decade. Good news for the American people, this popular sport fish and a beautiful native fish historically abundant in Lake Superior.
Our new FWCO Project Leader, Rebecca Neely, has been with the Service for almost 19 years and is excited about starting her new position at La Crosse . She has been the station lead of the Carterville FWCO Wilmington Substation for the last three and a half years where her work has been focused on Asian carp in the Illinois River. Prior to working for the Carterville FWCO, Rebecca worked for the Sea Lamprey Control Program, which is where her career with the Service began. She started as a seasonal employee and worked her way up to a team lead position, working in both Ludington and Marquette. Rebecca holds a B.S. in Natural Resources Management from Grand Valley State University, and an M.S. in Fisheries from Michigan State University The most rewarding aspect of her job is the professional and personal relationships she has developed with staff and partners. Away from the office, Rebecca enjoys spending time with her husband and family, traveling, and working on her many craft projects. Stop by the Lester Street office and welcome Rebecca to our Upper Miss.
The Genoa hatchery staff is happy to announce that we are now able to staff the Great River Road Interpretive Center this November with former National Park Service Park Ranger Raena Parsons. Raena joins us as our new Environmental Education Specialist. Raena earned her Bachelor’s degree at Eastern Washington University in 2010, and promptly began her federal career as an intern with the Bureau of Land Management. She also interned with the National Park Service at San Juan Island National Historical Park, and became a full time biological technician at the Historical Park in the same year. She also continued her education, earning her Master’s degree in Environmental Education from Western Washington University. Raena, her husband and daughter made the trek east and arrived just before Thanksgiving. She enjoys family activities, outdoor sports such as rock climbing, running and just plain getting outside. You will find Raena in our new Interpretive Center getting acclimated to our ongoing programs and preparing to build upon a conservation legacy in the community and the Upper Mississippi River Region.
Tagged lake sturgeon ready for release. Credit: USFWS
Fish Biologist James Boase checks tag presence before stocking. Credit: USFWS
Every fall tens of thousands of lake sturgeon depart their temporary home at the Genoa National Fish Hatchery (NFH) and begin their lives out in the wild, beginning the long process of maturing into 20 plus year old fish that are capable of reproducing on their own. Lake sturgeon populations have been severely reduced throughout their native range the past century due to human influenced effects such as over harvest, dam construction blocking spawning migrations, and degraded water quality. This year two far off restorations took hatchery crew over 500-1000 miles away in order to restore this intriguing species to two river systems within its native range. Genoa NFH was part of a cooperative effort to return lake sturgeon to the Maumee River, Ohio for the first time since they disappeared from the system in the mid 1900’s. This October, 2,400 fingerling lake sturgeon were transported the 9.5 hours to Toledo, Ohio where they were part of the first release ceremony in a cooperative release effort with the Toledo Zoo.
The fish were tagged with a PIT tag, or Passive Integrated Transponder tag, that transmits a unique tag number to an electronic reader when scanned, much the same as a tag that may be used to tag domestic house pets. They were then
released safely into the waters of the Maumee. The next week, over 12,000 fingerling lake sturgeon were transported over 1,000 miles away to assist the New York Department of Environmental Conservation’s sturgeon restoration efforts. This year the waters of New York benefited by having another year class of lake sturgeon to grow and thrive in the St. Lawrence River, New York and Lake Ontario watersheds. These multiple year restoration programs ensure that lake sturgeon population numbers and genetic diversity are at levels that can begin to rebuild populations naturally once these long lived species begin to multiply on their own again. In these instances, long range partnerships provide great dividends for natural resource conservation in two distant states.
By Doug Aloisi, Genoa NFH
BY: HENRY QUINLAN, EVAN BOONE, BRANDON KEESLER AND OREY ECKES
Fish biologist Henry Quinlan with the Ashland FWCO holds a 24 inch coaster brook
trout captured during the 2018 gamete collection in Tobin Harbor on Isle Royale
National Park. Credit: USFWS
The U.S. Fish and Wildlife Service (USFWS) annually stocks more than a million brook trout of different life stages across the country. In the Midwest region, Iron River National Fish Hatchery (NFH) maintains a captive line of Isle Royale strain coaster brook trout for stocking in Lake Superior waters in support of the Brook Trout rehabilitation plan.
To maintain genetic diversity within the brood stock, new brood lines are periodically developed. Every three to five years biologists from the USFWS Ashland Fish and Wildlife Conservation Office, Iron River NFH and Genoa NFH travel to Isle Royale National Park to collect gametes from the self-sustaining coaster brook trout population in Tobin Harbor. Brook trout spawning occurs in October at Isle Royale National Park. In Tobin Harbor, fish spawn along the shoreline in a mixture of sand, gravel and cobble substrate.
Fish are collected throughout Tobin Harbor using fyke nets placed along the shoreline. Nets are monitored on a daily basis and length, weight, sex and reproductive condition data are collected from all brook trout captured. If the fish are releasing gametes, they are transferred to a temporary holding pen for spawning. Spawning commences once we collect enough ripe adults to meet our target number of families. Milt from males is collected in individual containers and checked under a microscope for sperm motility. This test determines if the milt is active and helps prevent failed fertilization. Approximately 600 eggs are collected from each female, roughly one-half to one quarter of the total produced. After milt and egg collection the fish are released back to the wild. Eggs collected from each female are evenly divided into two batches and each batch is fertilized with milt from one male creating two families per female.
Hatchery biologists from Iron River NFH and Genoa NFH collect eggs from a female
brook trout in Tobin Harbor during the 2018 gamete collection. Credit: USFWS
The fertilized eggs are then transported from Isle Royale National Park to an isolation rearing facility at Genoa NFH in Genoa, Wisconsin. There they are incubated and the newly hatched fish raised for 18 months during which time they undergo several fish health inspections by staff at the USFWS La Crosse Fish Health Laboratory in Onalaska, Wisconsin. If the brood class passes three fish health inspections and are confirmed healthy, they are transported to Iron River NFH in Iron River, Wisconsin where they are incorporated into the coaster brook trout brood program to produce offspring for restoration stocking by USFWS and partner fishery agencies in Lake Superior.