EXPERIMENTAL FASCIOLOIDES MAGNA INFECTIONS OF MULE DEER (ODOCOILEUS HEMIONUS HEMIONUS) Author(s): William J. Foreyt Source: Journal of Wildlife Diseases, 28(2):183-187. Published By: Wildlife Disease Association DOI: http://dx.doi.org/10.7589/0090-3558-28.2.183 URL: http://www.bioone.org/doi/full/10.7589/0090-3558-28.2.183
BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder.
BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.
Journal
of
Wildlife ©
EXPERIMENTAL
FASCIOLOIDES
(ODOCOILEUS William
HEMIONUS
MAGNA
INFECTIONS
DIseases, Wildlife
28(2), Disease
1992, pp. 183-187 Association 1992
OF MULE
DEER
HEMIONUS)
J. Foreyt
Department of Veterinary Microbiology Pullman, Washington 99164, USA
and
Pathology,
Washington
State
University,
mule deer (Odocoileus hemionus hemionus) and one white-tailed deer (Odocoiapproximately 5-mo-old, each were inoculated orally with 500 metacercariae of Fascioloides magna. All mule deer died from liver fluke infection between 69 and 134 days (mean = 114, SE = 9.9) after inoculation. Between 38 and 326 immature F. magna (mean = 102, SE = 45.5) were recovered from each deer at necropsy. Flukes were present in livers, lungs, and free in pleural and peritoneal spaces. Infection was characterized by necrotizing hepatitis, fibrosing peritonitis and pleuritis, and hematin pigment accumulation in liver, lung, and many other internal organs. Eggs of F. magna first were detected in feces of the white-tailed deer 28 wk after inoculation, and weekly thereafter until the healthy deer was euthanized at 31 wk. At necropsy, 205 F. magna, including 12 encapsulated mature and 193 nonencapsulated immature flukes were recovered from liver, lungs, and free in abdominal and thoracic spaces of the white-tailed deer. Based on these results, F. magna may be fatal to mule deer within 5 mo of infection. Like domestic sheep and goats, mule deer may be highly susceptible to infection, and it is unlikely mule deer can survive infection with large numbers of F. magna. Key words: Fascioloides magna, liver flukes, trematode, Odocoileus hemionus hemionus, Odocoileus virginianus, experimental infection. Six
ABSTRACT:
leus
virginianus),
INTRODUCTION
Fascioloides
magna
MATERIALS
is a large
commonly
found
in
(Odocoileus
virginianus)
liver
and
deer
matures
in hepatic
tissue
infection,
and
after
feces
(Foreyt
hosts,
such
usually
and as
die
na migrates hepatic
tissue.
such
as the
liver
trapped
is
1976;
Lankester,
1990).
Mule
hemionus) in
this
deer
of in
that
but
the
(Foreyt
we
for
evaluated
an
experimental
mule
deer.
remain infection
and
(Odocoileus hosts
hosts,
Todd,
and Parish, hemionus
Foreyt
rare
of
alces), and can mature
eggs
1974;
study
group
tissue, lethal
are
genicity fection
not
damages
(Alces flukes
produce
in hepatic
F. rnag-
severely
third
glama), and
usually
and
a
moose
(Lama
llamas in
In
in
Aberrant and goats,
because
and
30 passed
sheep
infection
cattle,
are
1976).
domestic
quickly
America
1971; FoF. magna
approximately eggs
Todd,
from
(Cervus
elk
elaphus) in several areas in North and Europe (Erhardova-Kotrla, reyt, 1981). In definitive hosts, wk
fluke
white-tailed
F.
F.
AND METHODS
Six mule deer fawns and one white-tailed deer fawn,
BioOne (www.bioone.org) is a nonprofit, online aggregation of core research in the biological, ecological, and environmental sciences. BioOne provides a sustainable online platform for over 170 journals and books published by nonprofit societies, associations, museums, institutions, and presses. Your use of this PDF, the BioOne Web site, and all posted and associated content indicates your acceptance of BioOne’s Terms of Use, available at www.bioone.org/page/terms_of_use. Usage of BioOne content is strictly limited to personal, educational, and non-commercial use. Commercial inquiries or rights and permissions requests should be directed to the individual publisher as copyright holder.
BioOne sees sustainable scholarly publishing as an inherently collaborative enterprise connecting authors, nonprofit publishers, academic institutions, research libraries, and research funders in the common goal of maximizing access to critical research.
Journal
of
Wildlife ©
EXPERIMENTAL
FASCIOLOIDES
(ODOCOILEUS William
HEMIONUS
MAGNA
INFECTIONS
DIseases, Wildlife
28(2), Disease
1992, pp. 183-187 Association 1992
OF MULE
DEER
HEMIONUS)
J. Foreyt
Department of Veterinary Microbiology Pullman, Washington 99164, USA
and
Pathology,
Washington
State
University,
mule deer (Odocoileus hemionus hemionus) and one white-tailed deer (Odocoiapproximately 5-mo-old, each were inoculated orally with 500 metacercariae of Fascioloides magna. All mule deer died from liver fluke infection between 69 and 134 days (mean = 114, SE = 9.9) after inoculation. Between 38 and 326 immature F. magna (mean = 102, SE = 45.5) were recovered from each deer at necropsy. Flukes were present in livers, lungs, and free in pleural and peritoneal spaces. Infection was characterized by necrotizing hepatitis, fibrosing peritonitis and pleuritis, and hematin pigment accumulation in liver, lung, and many other internal organs. Eggs of F. magna first were detected in feces of the white-tailed deer 28 wk after inoculation, and weekly thereafter until the healthy deer was euthanized at 31 wk. At necropsy, 205 F. magna, including 12 encapsulated mature and 193 nonencapsulated immature flukes were recovered from liver, lungs, and free in abdominal and thoracic spaces of the white-tailed deer. Based on these results, F. magna may be fatal to mule deer within 5 mo of infection. Like domestic sheep and goats, mule deer may be highly susceptible to infection, and it is unlikely mule deer can survive infection with large numbers of F. magna. Key words: Fascioloides magna, liver flukes, trematode, Odocoileus hemionus hemionus, Odocoileus virginianus, experimental infection. Six
ABSTRACT:
leus
virginianus),
INTRODUCTION
Fascioloides
magna
MATERIALS
is a large
commonly
found
in
(Odocoileus
virginianus)
liver
and
deer
matures
in hepatic
tissue
infection,
and
after
feces
(Foreyt
hosts,
such
usually
and as
die
na migrates hepatic
tissue.
such
as the
liver
trapped
is
1976;
Lankester,
1990).
Mule
hemionus) in
this
deer
of in
that
but
the
(Foreyt
we
for
evaluated
an
experimental
mule
deer.
remain infection
and
(Odocoileus hosts
hosts,
Todd,
and Parish, hemionus
Foreyt
rare
of
alces), and can mature
eggs
1974;
study
group
tissue, lethal
are
genicity fection
not
damages
(Alces flukes
produce
in hepatic
F. rnag-
severely
third
glama), and
usually
and
a
moose
(Lama
llamas in
In
in
Aberrant and goats,
because
and
30 passed
sheep
infection
cattle,
are
1976).
domestic
quickly
America
1971; FoF. magna
approximately eggs
Todd,
from
(Cervus
elk
elaphus) in several areas in North and Europe (Erhardova-Kotrla, reyt, 1981). In definitive hosts, wk
fluke
white-tailed
F.
F.
AND METHODS
Six mule deer fawns and one white-tailed deer fawn,
