The bronze frog (''Lithobates clamitans clamitans'') is a subspecies of ''
Lithobates clamitans
''Lithobates clamitans'' or ''Rana clamitans'', commonly known as the green frog, is a species of frog native to eastern North America. The two subspecies are the bronze frog and the northern green frog.
These frogs, as described by their name, ...
'' found in the southeastern region of North America.
Description
The bronze frog grows up to 2–4 in (5.4–10.2 cm). Distinguishing characteristics include a bronze to brownish body, a white belly with dark, irregular blotches, and a bright-green upper lip and nose. Males may have yellowish throats. Bronze frogs are smooth-skinned, like all true frogs. They have long hind legs with webbed toes. Two dorsolateral folds begin behind the eye and runs two-thirds the length of body. The tympanum (ear disc) is larger in males.
Behavior
Bronze frogs are nocturnal and solitary. They remain under cover, in logs and crevices, most of the time. Male bronze frogs court females with a distinct call. Researchers agree that the mating call of the bronze frog sounds like someone plucking a loose banjo string. Named for its body color, the bronze frog may be difficult to find until warm, humid evenings, when its mating call is heard. Colloquially referred to as the "banjo frog", the primary breeding call is an explosive "clunk," or "cloink" frequently repeated several times in succession, but less powerfully each time. Like many species of frogs, the males voice an aggressive call when concentrations of these frogs are high in breeding areas. This
call
Call or Calls may refer to:
Arts, entertainment, and media Games
* Call, a type of betting in poker
* Call, in the game of contract bridge, a bid, pass, double, or redouble in the bidding stage
Music and dance
* Call (band), from Lahore, Paki ...
is a quick, harsh, spitting sound that sometimes precedes an attack on a competitor.
Distribution
Bronze frogs are found in the southeastern portion of the United States, from
North Carolina
North Carolina () is a state in the Southeastern region of the United States. The state is the 28th largest and 9th-most populous of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, Georgia and So ...
to the eastern third of
Texas
Texas (, ; Spanish language, Spanish: ''Texas'', ''Tejas'') is a state in the South Central United States, South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2 ...
.
Habitat
Bronze frogs are found in shallow streams, ponds, marshes, springs,
bayous
In usage in the Southern United States, a bayou () is a body of water typically found in a flat, low-lying area. It may refer to an extremely slow-moving stream, river (often with a poorly defined shoreline), marshy lake, wetland, or creek. They ...
, and
bald cypress
''Taxodium distichum'' (bald cypress, swamp cypress; french: cyprès chauve;
''cipre'' in Louisiana) is a deciduous conifer in the family Cupressaceae. It is native to the southeastern United States. Hardy and tough, this tree adapts to a wide r ...
swamps
A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...
with plenty of vegetation. They are active both day and night.
Diet
Bronze frogs eat a variety of vertebrates and
arthropods
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arth ...
. They eat flies, crickets, fish, small snakes,
crayfish
Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mu ...
, tadpoles, and other frogs.
Breeding
It reaches sexual maturity in the first full summer after metamorphosis. Breeding season begins in early spring and lasts through the summer. Females lay 2,000–4,000 eggs in small masses attached to underwater vegetation. Eggs are 1.5 mm when laid, but grow to 6 mm as cells divide. Incubation is one to two weeks. Tadpoles are green with small, dark spots. They grow 1.0–1.5 inches (28 – 33 mm) before they metamorphose (change from tadpoles to frogs). Bronze frogs live seven to 10 years.
External links
State of Texas: Bronze Frog
References
{{Taxonbar, from=Q4974258
Lithobates
Amphibians of the United States
Fauna of the Southeastern United States