Marsh Frogs are Europe’s largest frog. It is very similar in appearance to the closely related Edible Frog and Pool Frog. However some can thrive and in some cases become ‘invasive’. Their loud call can be heard quite clearly near breeding sites from April to September. Marsh frogs (Pelophylax ridibundus) are Europe’s largest native frog species, however they are not native to the UK. Since then they have become established throughout Romney Marsh and the low lying areas of North Kent as well as becoming common in other areas too. This includes introduction of exotic or alien species that may already have become established. They are not always easily told apart.They are active both day and night and like to bask in the sunshine.Some debate and growing concern surrounds whether Marsh Frogs can impact on our native species. Due to this concern it is listed under the Wildlife and Countryside Act 1981.Referred to as non native, alien and sometimes exotic, these species are those which do not occur naturally in the UK and have been introduced, accidentally or deliberately, by man. Spotted Marsh Frogs live in the eastern half of Australia. They were originally thought to prefer breeding sites which our native amphibians did not favour, such as ditches and dykes, however it is now known that they will readily use ponds and they are now often spotted in the same habitats as our native amphibians.This frog is a predator and might potentially have an impact on a range of native wildlife over time (as well as potentially carrying diseases to our native amphibians). Marsh frog, (Rana ridibunda), also called lake frog, large aquatic frog of the “true frog” family Ranidae, occurring naturally from the France to the Urals and by introduction in southern England. Many non native species are not able to survive or thrive in this new home and many non natives are of no threat to native biodiversity. A useful aid to identifying the species is the grey appearance of the inflated vocal sacs. The marsh frog is a non-native species in the UK, introduced to Kent in the 1930s.
Our editors will review what you’ve submitted and determine whether to revise the article.Curator Emeritus, Division of Amphibians and Reptiles, National Museum of Natural History, Smithsonian Institution, Washington, D.C.Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox.By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.Get kids back-to-school ready with Expedition: Learn!East Kent Gazzette - Marsh Frog - Rana Ridibunda,Tasmania's National Parks - Striped marsh frog. Marsh Frog colour varies but they are generally quite green and usually have two parallel lines along their backs with eyes closer together than a native frog. The Marsh Frog was introduced to the UK in the 1930s into Romney Marsh (Kent). Release of exotic species into the wild is a criminal offence under the Wildlife and Countryside Act 1981. This species seldom occurs more than 1 to 2 metres (3 to 6.5 feet) from the edge of permanent water. They form part of what is known as the water frog or green frog complex of species which includes not only Marsh Frogs but Pool Frogs and Edible Frogs. Spotted Marsh Frogs eat water insects, flying insects and spiders. The Striped Marsh Frog is predominantly a pond-dweller but nearly any kind of water will do, including fish ponds and polluted ditches. Although most water frogs in Kent are Marsh Frogs both Edible Frogs and Pool Frogs have also been recorded. Marsh Frogs are Europe’s largest frog. Currently the population is spreading, and it is now found in several areas in Kent and Sussex, as well as Southwest and West London.
The Marsh Frog (Pelophylax ridibundus) is the largest frog native to Europe and belongs to the family of true frogs. They can be found in swamps, lagoons and creeks in wet coastal areas and dry inland areas. Male marsh frog croaking, note the grey appearance of the inflated vocal sacs, a useful aid to identification of this species. In general these problem species may potentially carry new diseases which may affect our native wildlife or they may prey on native plants and animals and have an impact on native species abundance or habitat availability.With reference to non native species in general, please remember not to release any pets or exotic species into the wild as although this has been done in the past, to do so now is illegal and can cause considerable harm to native habitats and wildlife.Be careful also about which plants you purchase or discard from your garden pond. It even occasionally shows up in suburban swimming pools and has been recorded breeding in … What is a marsh frog? They are considered non-native and were introduced into Kent in the 1930s. Here is our expert guide by zoologist and PhD researcher Steven Allain. It is an adaptable frog and often encountered in urban environments. For more information on Invasive Non Natives visit the Non Native Species Secretariat.We can all play our part in protecting Kent’s herpetofauna by sending in records of native species and also by helping us to monitor the exotic species which are now calling Kent home.Probably the most familiar of Kent's amphibians, the Common Frog frequently uses garden ponds for spawning.More commonly seen in larger ponds than those found in gardens, the Common Toad will often coexist alongside fish; the tadpoles being so distasteful that fish soon learn to leave them alone!Support the conservation of reptiles and amphibians in Kent by joining the group. Since then they have become established throughout Romney Marsh and the low lying areas of North Kent as well as becoming common in other areas too.It is very easy to distinguish the Marsh Frog from our native frog as the Marsh Frog has no eye patch, is generally much larger, has a rounder snout and (in males) two grey air sacs on either side of their mouths which produce their unique call.
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