Efforts continue to reintroduce Arctic grayling in
Michigan
By MAKENZIE SCHROEDER Michigan Department of Natural Resources
It’s been a little over two years since the Michigan
Department of Natural Resources, in partnership with the Little River Band of
Ottawa Indians, announced a new initiative to bring back a long-gone
historical species – Arctic grayling – to the Great Lakes state.
Michigan’s Arctic Grayling Initiative – with more than 45
partners, including state and tribal governments, nonprofit organizations,
businesses and universities – is committed to reintroducing this culturally significant
species, with steady progress made since June 2016.
“Our formal mission as an initiative is to restore
self-sustaining populations of Arctic grayling within its historic range in
Michigan,” said DNR Fisheries Division Assistant Chief Todd Grischke.
Michigan’s history with the Arctic grayling is long and
storied. A striking fish with a sail-like dorsal fin and a slate blue color on
its body, it was virtually the only native stream salmonid (a family of fish
that also includes salmon and trout) in the Lower Peninsula until
the resident population died off nearly a century ago.
“The fact we have a town named after this fish indicates just
how iconic it was, and still is, to many in this state,” Grischke said. “When
you add in other factors – such as the fact they’re only native to Michigan and
Montana out of all the lower 48 states – it just adds to their legendary status.”
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In the 19th century, Arctic grayling were found in many
coldwater streams in Michigan’s northern Lower Peninsula and in one Upper
Peninsula stream – and large populations of grayling flourished in the Manistee
and Au Sable rivers – offering anglers plenty of opportunity to catch these
unique fish.
But a variety of factors slowly erased their presence,
including the cutting of Michigan’s vast virgin forest in the 1800s.
“Logging practices during that time period used streams to
transport trees that were harvested. The streams carried logs to mills for
processing,” explained Grischke. “These practices greatly impacted the physical
nature of those streams and basically destroyed stream habitats for fish,
including grayling spawning areas.”
Additionally, the cutting of the trees caused blockages in
many of those same streams, often displacing grayling from where they lived, but
this was just one issue that affected Michigan’s Arctic grayling, another being
the introduction of non-native fish species.
“Other types of trout were introduced into Michigan’s waters
to create additional opportunities for anglers to pursue – but a consequence of
this action was that grayling couldn’t compete with more aggressive fish like
brown, rainbow or brook trout,” Grischke said.
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The other factor that led to the species’ demise was overfishing, as people harvested grayling in large quantities with no possession limits or
other regulations to stop them.
The last native Arctic grayling on record in Michigan were caught in 1936. Since that time, natural resource managers have repeatedly looked
for options to reintroduce the species.
“In the late 1800s and early 1900s they tried stocking
millions of Arctic grayling fry into Michigan streams, but that didn’t work,”
said Grischke. “And then in the 1980s we, the DNR, stocked hatchery-reared
yearlings into lakes and streams, but again to no avail.”
In each of these previous reintroduction efforts, something
critical was missing that prevented these populations from flourishing, but the
Michigan Arctic Grayling Initiative hopes to rectify that.
“We have learned from the previous reintroduction events
and plan to capitalize on new approaches, dedicated partnerships and advanced
technology,” Grischke explained.
Much of the initiative’s focus is detailed in its official action
plan, reflective of the vast work to be done by various partners.
The group is gleaning as
much information as possible from the state of Montana and its successful
effort at re-establishing
stable Arctic grayling populations. In addition to Michigan receiving help from
biologists in Montana, both states also have been collaborating with Alaska.
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“Within our action plan we’ve identified four focus areas and associated
goals that were developed by all the partners and that we believe will give us
the best chance of success moving forward,” said Grischke.
The four focus areas of the action plan are research, management, fish
production, and outreach and education.
The research focus area includes work – already under way – on
understanding relationships between resident trout and grayling, prioritizing
streams for grayling introduction and evaluating in-stream remote site incubators.
These incubators allow fish to be reared and released directly in the streams
to better allow them to imprint to the waters they hopefully will reproduce in later.
Better imprinting means the initiative will be one step closer to
establishing a self-sustaining population of Arctic grayling, which is the ultimate
outcome of this effort.
The cost to reintroduce the fish will total around $1.1 million,
according to DNR Fisheries Division Chief Jim Dexter, with virtually the entire
amount being supplied through private and foundation support.
To date, nearly $325,000 has been raised for the initiative.
Contributors include the Consumers Energy Foundation, the Henry E. and Consuelo
S. Wenger Foundation, Rotary Charities of Traverse City, Petoskey-Harbor
Springs Area Community Foundation, Oleson Foundation and Little Manistee River
Watershed Conservation Council. Plans are under way to recognize donors at Oden
State Fish Hatchery.
"A diverse group of partners has invested
themselves toward attaining a shared goal, and that says something about the
nature of this project," said Dexter.
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Funders are critical in financially supporting various projects
within the initiative.
“I am delighted to play a role in returning the Arctic grayling to
northern Michigan’s streams,” said Charles Wilson, a member of the Henry E. and
Consuelo S. Wenger Foundation’s board. “There has been a void in Michigan’s
biotic community for way too long, but thanks to knowledge gained from
Montana’s experience and research performed elsewhere, a reasonable chance
exists today for successful reintroduction.”
Goals for the management focus area will include evaluating key habitat
criteria, establishing population goals, and working on regulations related to
fishing for grayling.
The fish production focus area’s work will center on experimenting with remote
site incubator designs, ensuring fish health standards are upheld and
maintaining a genetically diverse broodstock (fish used for breeding purposes) that
will be housed at a hatchery facility.
Lastly, goals for the outreach and education focus area will be concentrated
on informing the public about this initiative’s efforts, identifying future
partners and creating a stewardship plan.
“The goals of these focus areas will be accomplished by partner
representatives working together,” Grischke shared. “The only way this
initiative will be successful is if we continue to work together towards our
mission.”
To learn more about the Michigan Arctic Grayling Initiative, visit migrayling.org.
Check out previous Showcasing the DNR stories in our archive
at michigan.gov/dnrstories.
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/Note to editors: Media contact: John Pepin, 906-226-1352. Accompanying photos are available below for download. Caption information follows. Credit Michigan Department of Natural Resources, unless otherwise noted.
Text-only version of this story.
Fishing: Current Arctic grayling
fishing opportunities are limited to states like Alaska, where the fish
pictured was caught.
Grayling
1 and Grayling
2: A striking fish with a sail-like dorsal fin and colorful body
markings, the Arctic grayling is in the same salmonid family as
salmon, trout and whitefish. Photo
credit: U.S. Fish and Wildlife Service.
Grayling
3 and Grayling
4: The Arctic grayling was virtually the only native stream
salmonid in Michigan’s Lower Peninsula until the resident population died off
nearly a century ago.
Incubators: Research being done
in the field as part of the Michigan Arctic Grayling Initiative includes work
with remote site incubators to better understand how the grayling rearing process
works on Michigan streams.
Research: Much research is
being done as part of the Michigan Arctic Grayling Initiative, like rearing eggs
in a lab environment to see how they grow./
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