|

Search
SREL
Herp Site
| |
"Herps of the Southeast"
Virtual Walk
|
Stop
9
Welcome to Florida
|
Featured Herp
"Giant" Salamanders
(Amphiuma and Siren)
|
Its not easy hiking on trembling earth, but the East Aiken
group managed to hike Trail Ridge down the east side of the Okefenokee Swamp. The North
Prong of the St. Marys River flows southeast out of the Okefenokee, and the school
followed it and crossed over into Nassau County in Florida, just west of Bryceville. With
the Brady Bunch Swamp (OK, its really Brady Branch) and Crosby Bay nearby, it
is a good area to search for this weeks animals, sirens and amphiumas, the
Easts "giant" salamanders. The school arrived at their destination, about
14.5 miles (23.5 kilometers) west of Jacksonville, Florida, on November 1, 1999.
While in the Jacksonville area students
learned of a truly neat project being conducted by other students at
Sandalwood High School. The
Sandalwood High students, under the direction of Mike Monlezun of the
Jacksonville Herpetological
Society and school principal Bill Gesdorf, have created the
Sandalwood Gopher Tortoise Reserve (SGTR), a 900 sq. ft. pen that houses six
Florida gopher tortoises (Gopherus polyphemus) in a natural setting.
This gives the students and visitors of Sandalwood High School the
opportunity to see these tortoises interact naturally.
The project director, teacher Mike Monlezun,
has a herpetology club at the high school and has great plans to use the
tortoise colony to help teach science. Said Mike,
"My goals for the facility are to
include a webcam focused on the gopher tortoises
and to build a remote control vehicle, equipped with sensors to drive down the
gopher tortoise burrows to take a variety of measurements and video. Students
will then take that information and make 3-D models of the burrows. I also
want the students to work on literature that mentions all or almost all known
inhabitants of the gopher tortoise burrows. "
To learn more of this
project visit the
SGTR
website, and to learn more about gopher tortoises continue on the
SPARC journey to week
20.
Sirens and Amphiumas
("Giant" salamanders)

Amphiuma |
The "herp of the week" this week is
more than one species. Actually, sirens and amphiumas belong to different genera (the plural of
"genus"), and even to different families. Species, genera, families, orders,
classes
these groupings are all part of a system of naming organisms. The system of
"biological nomenclature" has a number of purposes, one of which is to help
avoid confusion. When we name an organism with a common (non-Latin) name, that name is
only useful so long as everybody else calls it by the same name. Chances are that the
farther you go from your home turf, where most people use the same common names, the more
likely it is that you will encounter folks who use different common names or even speak a
different language. |
| So, for example, when we speak of giant salamanders (meaning sirens
and amphiumas) in the eastern US, people who live in Oregon and Washington will say,
"What are youcrazy? Giant salamanders dont live in the East. Giant
salamanders live in the Pacific Northwest. Get a map." OK, so they might not tell us
to get a map, because they have such a reputation for being laid back, but they still
might call us crazy. Common names can be confusing. |
For example, one of the lesser-seen sirens in Florida, not to be
confused with the Lesser Siren, is commonly called the Southern Dwarf Siren, although it
is truly a member of the Giant Salamander group. Make sense?
The sirens and amphiumas that the East Aiken hikers could
conceivably see on their trek through the Southeast include:
|

Download the
Giant Salamander Fact Sheet |
Sirens
Siren lacertina (greater siren)
Siren intermedia (lesser siren)
Psueudobranchus striatus (northern dwarf siren)
Psueudobranchus axanthus (southern dwarf siren)
|
|
Amphiumas
Amphiuma means (two-toed amphiuma)
Amphiuma pholeter (one-toed amphiuma)
Amphiuma tridactylum (three-toed amphiuma)
|
|
| Fun Facts
|
The two-toed amphiuma is one of
the largest salamanders in the world, reaching lengths up to 116 cm (almost 4 feet!).
- Greater sirens have been known to
survive more than five years without eating, and several years without water (in
aestivation). Not only can they form a cocoon to stay alive, but also they rely on large
amounts of stored fat and they can reduce their metabolic rate by 70%.
|
Want to see a neat swampy salamander habitat in North Florida?
Check out
Mallory Swamp .
Other Florida amphibians?
See Nordevald
"Native Florida" web site.
Giant
salamander Fact
Sheet
|