Moor frog
The moor frog (Rana arvalis) is our smallest frog from the family of true frogs (Ranidae), order Anura. Its stout body reaches up to around 6 cm in length. Its name indicates the type of habitats this species inhabits. It is typically lowland species, in larger valleys it can be found up to 1500 m.
The main physical features are pointed snout, dark ear spot, white or yellow belly and reddish-brown back. In mating season males can develope bright-blue coloration, which is the reason for slovene name of this species (plavček). They grow slowely and reach sexual maturity between 2 and 4 years of age. Their lifespan is 10-15 years, but most of animals do not reach this age, since this species has a lot of predators. They are mainly predated by birds, snakes, fish and small carnivors. Majority of moor frogs die as tadpoles.
Threats and conservation status
Main threats to moor frog is human interventions in species habitats and water regimes of wetlands. Frogs are especially sensitive to water pollution with various biocides and intensive agricultural practices. Wetlands are often used as waste disposal areas or being filled up for construction purposes. Any such action results in habitat reduction of endangered species. In Slovenia the moor frog is listed on the Red list as vulnerable species.
