Rana
HumboldtHerps.com
Complete
Genus - Rana
SIGHTINGS pictures for this genus are listed below. This is to assist in visual
comparisons, as texts for this page are still yet unwritten.
comparisons, as texts for this page are still yet unwritten.
| AMERICAN BULLFROG (Rana catesbeiana) |
American Bullfrog (brown variant)
North Fork Trinity River near Helena, CA
(Trinity County) August 14, 2005
North Fork Trinity River near Helena, CA
(Trinity County) August 14, 2005
Ranids (True Frogs) Family - Ranidae
SIGHTINGS pictures for this genus are listed below. This is to assist in visual
comparisons, as texts for this page are still yet unwritten.
comparisons, as texts for this page are still yet unwritten.
| Rana catesbeiana in Captivity ADAPTABLE / HIGH MAINTENANCE |
American Bullfrog tadpoles on the Eel River near
Phillipsville, CA. (Humboldt County) June 18, 2007
Eel River
habitat
Phillipsville, CA. (Humboldt County) June 18, 2007
Eel River
habitat
CB Alibino American Bullfrog adult and tadpole
(HSU Natural History Museum - Reptile and
Amphibian Discovery Day) March 7, 2009
(HSU Natural History Museum - Reptile and
Amphibian Discovery Day) March 7, 2009
Alert!
Please be on the
look-out for this frog!
American Bullfrogs are
the largest North
American frogs in the
state of California, but
they do not belong
here. In the past, frogs
have commonly been
introduced into new
non-native habitats as
a form of natural pest
control. In the case of
the bullfrog, man has
introduced these
eastern North
American natives to
states throughout the
west. My father recalls
hunting for "frogs
legs" back in the late
60's in the rice paddies
of the Sacramento
River Delta region.
Rana catesbeiana has
also been spreading
throughout South
Korea and Vietnam.
WHY ARE BULLFROGS
A PROBLEM?
They eat almost
anything they can
shove into their
mouths and swallow.
Locally, and throughout
California and other
western states this
means bullfrogs pose
a threat to most other
other smaller native
herps. True, some
smaller frogs or
tadpoles may be
preyed upon by garter
snakes; bullfrogs
however will feed on
smaller garters,
smaller frogs and
salamanders, and baby
Western Pond Turtles.
If you know of a place
that has a local bullfrog
population, the HCHS
would like to know.
Please e-mail us. It
may be too late already
to completely stop this
invasion. The HCHS
would like to begin
mapping, monitoring,
and culling known
infestation sites, if not
to eliminate the
problem, then to help
contain it, assuming
native habitats can be
protected.
Please be on the
look-out for this frog!
American Bullfrogs are
the largest North
American frogs in the
state of California, but
they do not belong
here. In the past, frogs
have commonly been
introduced into new
non-native habitats as
a form of natural pest
control. In the case of
the bullfrog, man has
introduced these
eastern North
American natives to
states throughout the
west. My father recalls
hunting for "frogs
legs" back in the late
60's in the rice paddies
of the Sacramento
River Delta region.
Rana catesbeiana has
also been spreading
throughout South
Korea and Vietnam.
WHY ARE BULLFROGS
A PROBLEM?
They eat almost
anything they can
shove into their
mouths and swallow.
Locally, and throughout
California and other
western states this
means bullfrogs pose
a threat to most other
other smaller native
herps. True, some
smaller frogs or
tadpoles may be
preyed upon by garter
snakes; bullfrogs
however will feed on
smaller garters,
smaller frogs and
salamanders, and baby
Western Pond Turtles.
If you know of a place
that has a local bullfrog
population, the HCHS
would like to know.
Please e-mail us. It
may be too late already
to completely stop this
invasion. The HCHS
would like to begin
mapping, monitoring,
and culling known
infestation sites, if not
to eliminate the
problem, then to help
contain it, assuming
native habitats can be
protected.
| For additional information on the American Bullfrog, please follow the CaliforniaHerps link; Gary Nafis also has some great posted sound clips for many of our local frogs. http://www.californiaherps.com/frogs/pages/r.catesbeiana.html |