Coyote population growth increases in Eastern NC
Hunters and other outdoors enthusiasts often ask
about coyotes aboard
Marine Corps Base Camp Lejeune. I recently
chatted with Roland Kays,
an expert on eastern coyotes, who serves the
biodiversity director at the
North Carolina Museum of Natural Sciences,
to find out more about this
interesting mammal.
Eastern Coyote
about coyotes aboard
Marine Corps Base Camp Lejeune. I recently
chatted with Roland Kays,
an expert on eastern coyotes, who serves the
biodiversity director at the
North Carolina Museum of Natural Sciences,
to find out more about this
interesting mammal.
Eastern Coyote
Coyotes are common on Camp Lejeune and
elsewhere across the eastern
United States, even though they are not native
to this part of the country.
Only in the 1980s did coyotes begin to invade
North Carolina. Several
factors allowed coyotes to spread from west to east.
A major factor behind the successful expansion
of coyotes corresponds
to the ecological vacuum left behind after people
eradicated wolves
across the country. Wolves were extirpated from
nearly all of the
United States by the early 20th century. Nature
abhors a vacuum:
All of the rabbits, deer, and other prey resources
that wolves once
hunted were available for coyotes to exploit.
Coyotes took
advantage of this new bounty of food, and
populations expanded.
of coyotes corresponds
to the ecological vacuum left behind after people
eradicated wolves
across the country. Wolves were extirpated from
nearly all of the
United States by the early 20th century. Nature
abhors a vacuum:
All of the rabbits, deer, and other prey resources
that wolves once
hunted were available for coyotes to exploit.
Coyotes took
advantage of this new bounty of food, and
populations expanded.
"Hybrid vigor" is another factor that promoted
coyote invasion
into the eastern United States. Coyotes occurred
at a very low
density when they first invaded the eastern
United States. They
"made do" and bred with feral dogs and wolves,
animals that
also occurred in low numbers. Interbreeding
among these canids
created a hybrid that is well-adapted to the
fragmented landscape
of the eastern United States. Mammalogists
commonly refer to this
new animal as the eastern coyote, although
others may know them
as "coydogs" or "coywolves." Approximately
10-20 percent of the
eastern coyote’s genes derive from dogs and
wolves. These genes
manifest in fascinating ways. Dog genes cause
many eastern coyotes
to have black, red, or blonde fur, although many
retain the mottled
brownish grey coat of their western ancestors.
Wolf genes result in
much bigger coyotes, with bushier tails, larger
body sizes and weights,
and massive skulls.
Eastern Coyote
coyote invasion
into the eastern United States. Coyotes occurred
at a very low
density when they first invaded the eastern
United States. They
"made do" and bred with feral dogs and wolves,
animals that
also occurred in low numbers. Interbreeding
among these canids
created a hybrid that is well-adapted to the
fragmented landscape
of the eastern United States. Mammalogists
commonly refer to this
new animal as the eastern coyote, although
others may know them
as "coydogs" or "coywolves." Approximately
10-20 percent of the
eastern coyote’s genes derive from dogs and
wolves. These genes
manifest in fascinating ways. Dog genes cause
many eastern coyotes
to have black, red, or blonde fur, although many
retain the mottled
brownish grey coat of their western ancestors.
Wolf genes result in
much bigger coyotes, with bushier tails, larger
body sizes and weights,
and massive skulls.
Eastern Coyote
Although it is not likely as significant as hybrid
vigor or the absence
of wolves, massive deforestation of the United
States also contributed
to the eastward spread of coyotes. In the West,
coyotes inhabit deserts
and grasslands. Most of the eastern United States
was covered in trees
prior to European colonization. As open fields
replaced forests, coyotes
took advantage of the newly created habitat.
That said, the eastern
coyotes now thrive in all habitats, including
heavily-forested landscapes.
Hunters often lament the existence of coyotes.
Although we can effectively
control one or a few problem animals (e.g.,
those raiding a chicken coop),
science has repeatedly demonstrated that
efforts at controlling coyote
populations are futile. Many peer-reviewed
articles exist to demonstrate
that population-control efforts cause female
coyotes to breed at younger
ages and have larger litter sizes.
Although we can effectively
control one or a few problem animals (e.g.,
those raiding a chicken coop),
science has repeatedly demonstrated that
efforts at controlling coyote
populations are futile. Many peer-reviewed
articles exist to demonstrate
that population-control efforts cause female
coyotes to breed at younger
ages and have larger litter sizes.
Attempts at population-level control of coyotes
might actually increase
coyote populations. Coyotes are highly territorial
against intruders, resulting
in a set density of coyotes across any given
landscape. Research on a
similarly territorial species, the mountain lion,
has shown that as you break
down territories across a landscape, younger,
more risk-tolerant animals
thrive as they vie for dominance. This results
in a net increase in the
population. Attempts at population control may
also boost eastern coyote
numbers.
might actually increase
coyote populations. Coyotes are highly territorial
against intruders, resulting
in a set density of coyotes across any given
landscape. Research on a
similarly territorial species, the mountain lion,
has shown that as you break
down territories across a landscape, younger,
more risk-tolerant animals
thrive as they vie for dominance. This results
in a net increase in the
population. Attempts at population control may
also boost eastern coyote
numbers.
Some hunting pressure may have benefits, even
if it doesn’t reduce the
overall population of coyotes. Hunting introduces
a fear of humans to
coyotes. Fear of humans keeps coyotes away from
people, which in turn
reduces the probability of human-coyote conflicts.
Hunters and trappers
may harvest coyotes year-round. Hunters may use
electronic calls to lure
coyotes, but calling for any other species is
unauthorized. The species is
a generalist in the broadest sense. The species
inhabits all ecosystems on
installation, so there is no one best place to
search for coyotes.
Coyote ecology is indeed complicated. Whetherif it doesn’t reduce the
overall population of coyotes. Hunting introduces
a fear of humans to
coyotes. Fear of humans keeps coyotes away from
people, which in turn
reduces the probability of human-coyote conflicts.
Hunters and trappers
may harvest coyotes year-round. Hunters may use
electronic calls to lure
coyotes, but calling for any other species is
unauthorized. The species is
a generalist in the broadest sense. The species
inhabits all ecosystems on
installation, so there is no one best place to
search for coyotes.
you like eastern coyotes
or not, they are here to stay, and I don’t think
anyone would disagree they
anyone would disagree they
are an interesting part of our environment.
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