Green Frog (Lithobates clamitans) lives in freshwater wetlands across Eastern half of the United States and Canada. Its conservation status is Least Concern.
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Green frogs tip the size scale at just 5-10 cm long, yet they can weigh up to 85 g. Adults range from 5-10 cm (2.0-3.9 in) in body length and the typical body weight of this species is from 28 to 85 g (0.99 to 3.00 oz). Males stand out with a tympanum twice the diameter of the eye and a bright yellow throat, while females have a tympanum about the same size as the eye.
A single female can lay a massive egg raft up to 105 mm across, packing between 1 000 and 7 000 eggs in a 15-30 cm-wide surface film. During the breeding period, an egg clutch consisting of 1000 to 7000 eggs is laid in surface films about 15-30 cm in diameter and are attached to vegetation in shallow water. Females may sometimes lay two clutches in one season, each reaching a maximum of 98-105 mm.
Male green frogs fiercely guard tiny territories of just 4-6 m², shrinking them further when dense shoreline foliage is present. Typical territory size for a male green frog is between 4 and 6 m^2. In denser areas, males defend smaller territories while in more open areas, territories defended were larger. This spatial strategy lets dominant males attract females, while smaller rivals become "satellite" males that hover at the edges.
According to the Maryland Biological Stream Survey, stormwater ponds which are a main example of a breeding habitat in Maryland can experience chloride concentrations of up to 3250 mg/L, which shows how there are several factors within their habitat affecting the survival rate of these frogs. Such chemical stress, amplified by higher temperatures, raises mortality risk and threatens local populations.
Bd fungus shows up in 30-50 % of Missouri ponds, yet green-frog tadpoles there rarely die, hinting at a local tolerance. The researchers also identified and measured the densities of 68 macroinvertebrate species in the ponds. They reported no larvae with deformed mouthparts and no evidence of Bd-related mortality in the amphibians at this site even though Bd was present in 30 to 50% of the ponds evaluated. This suggests that green frogs and their pond communities have adapted to coexist with the pathogen.
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In the lush, vibrant wetlands, the green frog emerges as a master of inconspicuousness, its mottled skin blending seamlessly with the surroundings as it navigates the murky waters with effortless ease. With each gentle leap, it seems to defy gravity, its slender legs unfolding like tiny springs to propel it silently through the undergrowth, a fleeting glimpse of emerald green vanishing as quickly as it appears. As it moves, the green frog embodies the very essence of adaptability, its remarkable ability to thrive in a wide range of habitats a testament to its enduring presence in these delicate ecosystems.
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