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Agile frog

The agile frog (Rana dalmatina) is a European frog in the genus Rana of the true frog family, Ranidae.[2]

Agile frog
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Ranidae
Genus: Rana
Species:
R. dalmatina
Binomial name
Rana dalmatina
Distribution (green)
Synonyms
  • Rana agilis Thomas, 1855
  • Rana gracilis Fatio, 1862
  • Rana temporaria var. agilis Schreiber, 1875
  • Rana temporaria agilis Bedriaga, 1881
  • Rana agilis agilis Cope, 1886
  • Rana (Crotaphitis) agilis Schultze, 1891
  • Rana (Rana) dalmatina Guibé, 1950
  • Rana agiloides Brunner, 1951
  • Rana mülleri Brunner, 1959
  • Rana (Rana) dalmatina Dubois, 1987
  • Rana (Laurasiarana) dalmatina Hillis & Wilcox, 2005

Description edit

This species is fat and has long limbs and a pointy snout. Adult males are rarely larger than 6.5 cm, while females can grow up to 8 cm. Its dorsal surface is light brown, reddish-brown, or light greyish-brown with very little contrast. Triangle-shaped spots reach from the temple to the eardrum, which are dark brown. The underside of the agile frog is white without any spots. During mating season, the males often become dark brown.[3]

The hind legs are unusually long, which allow this species to jump further than other similar frogs - they have been known to jump up to two metres in distance. The pupils are horizontal. The colour of the upper third of the iris (above the pupil) is lighter and gold in coloration. The tympanum is about the size of the diameter of the eye. The gland stripes on the frog's back are not very developed and partially interrupted.

Reproduction edit

 
Typically fixed spawn clump under water

The call is a fairly quiet "rog ... rog ... rog", and can last for up to 12 seconds, and almost sounds like a clucking chicken. They often also call under water, so the calls can only be heard from a very short distance by observers. Spawning only lasts a few days, and during this period, the males sometimes gather in large calling groups on the water surface to attract females. In Central Europe, spawning usually occurs in the first 20 days of March, but can also be delayed, depending on the weather. The spawn clumps consist of 450 to 1800 eggs, and are usually attached to tree branches, roots, or plant stems at depths of 5–40 cm (2–16 in). Therefore, they rarely sink to the bottom. Unlike the moor frog (Rana arvalis) and common frog (Rana temporaria), the agile frog does not lay its spawn all in one clump. The diameter of a single egg, not counting the gelatinous shell, is 1.5–2.1 mm (0.06–0.08 in).[3]

Feeding edit

Adults of agile frog eat arthropods like caterpillars, spiders, millipedes, flies, beetles, cicadas and collembolans.[4][5][6][7] Tadpoles eat plant material.[8]

Habitat edit

The agile frog prefers light deciduous mixed forests with plentiful water. The open land around a forest is often also populated, as long as it is connected to the forest by shrubs. In dry, warm forests, this species often also lives far away from the water. Of the three Middle European Rana species, this frog likes warmth and dryness the most.[1]

Distribution edit

The agile frog can be found in France, the Channel Islands, parts of Germany, Denmark, Sweden, Italy, the Czech Republic, Slovakia, Austria, Hungary, on the Balkans, Greece, and by the Black Sea. The species once lived in the Great Britain, during middle Saxon times, with archaeological remains recovered in East Anglia.[9][10] Celtic Reptile & Amphibian have discussed reintroducing the species.[11][12] It has undergone a reintroduction on Jersey, by Durrell Wildlife Conservation Trust, as it was very close to extirpation on the island.[13][14]


References edit

  1. ^ a b U?ur Kaya; Sergius Kuzmin; Max Sparreboom; et al. (2009). "Rana dalmatina". IUCN Red List of Threatened Species. 2009: e.T58584A11790570. doi:10.2305/IUCN.UK.2009.RLTS.T58584A11790570.en. Retrieved 19 November 2021.
  2. ^ Frost, Darrel R. (2013). "Rana dalmatina Fitzinger, 1839". Amphibian Species of the World 5.6, an Online Reference. American Museum of Natural History. Retrieved 27 November 2013.
  3. ^ a b "Rana dalmatina". AmphibiaWeb. Retrieved 16 April 2021.
  4. ^ Cicort-Lucaciu, Alfred-Stefan; Sas, Istvan; Roxin, Maria; Badar, Larisa; Goilean, Camelia (2011). "The feeding study of a Rana dalmatina population from Carei plain" (PDF). South Western Journal of Horticulture, Biology and Environment. 2 (1): 35–46. Retrieved 26 April 2024.
  5. ^ Guidali, Franca; Scali, Stefano; Carettoni, Alessia (1 January 2000). "Diet and trophic niche overlap of two ranid species in northern Italy". Italian Journal of Zoology. 67 (1): 67–72. doi:10.1080/11250000009356297.
  6. ^ Hodisan, Oana Irina; Benchiş, Andrei; Gabrian, Daniel; Badar, Larisa; Toader, Simona (2010). "The trophic spectrum of two brown frog populations (Rana dalmatina and Rana temporaria) from Baia de Fier area, Romania" (PDF). Herpetologia romanica. 4: 7–16. Retrieved 26 April 2024.
  7. ^ Aszalós, Lilla; Bogdan, Horia; Kovács, Éva-Hajnalka; Peter, Violeta-Ionela (2005). "Food composition of two Rana species on a forest habitat (Livada Plain, Romania)" (PDF). North-Western Journal of Zoology. 1: 25–30. Retrieved 26 April 2024.
  8. ^ Reeder, W. G. (1964). "The digestive tract". In Moore, John A. (ed.). Physiology of Amphibia. New York: Academic Press. pp. 99–149.
  9. ^ Gleed-Owen, Chris Paul (March 2000). "Subfossil records of Rana cf. lessonae, Rana arvalis and Rana cf. dalmatina from Middle Saxon (c. 600-950 AD) deposits in eastern England: Evidence for native status". Amphibia-Reptillia: 57–65 – via Research Gate.
  10. ^ Snell, Charles (2006-02-01). "Status of the common tree frog in Britain". British Wildlife. 17: 153–160.
  11. ^ "'Who doesn't love a turtle?' The teenage boys on a mission – to rewild Britain with reptiles". the Guardian. 2021-01-10. Retrieved 2021-10-27.
  12. ^ "Guest blog by Celtic Reptile and Amphibian - Mark Avery". markavery.info. Retrieved 2021-10-27.
  13. ^ "Inside the Islands - Jersey's Agile Frogs". ITV News. 2019-07-21. Retrieved 2021-10-27.
  14. ^ "Agile frog | Durrell Wildlife Conservation Trust". wildlife.durrell.org. Retrieved 2021-10-27.

External links edit

  •   Media related to Rana dalmatina at Wikimedia Commons

agile, frog, agile, frog, rana, dalmatina, european, frog, genus, rana, true, frog, family, ranidae, conservation, status, least, concern, iucn, scientific, classification, domain, eukaryota, kingdom, animalia, phylum, chordata, class, amphibia, order, anura, . The agile frog Rana dalmatina is a European frog in the genus Rana of the true frog family Ranidae 2 Agile frog Conservation status Least Concern IUCN 3 1 1 Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Class Amphibia Order Anura Family Ranidae Genus Rana Species R dalmatina Binomial name Rana dalmatinaFitzinger in Bonaparte 1839 Distribution green Synonyms Rana agilis Thomas 1855 Rana gracilis Fatio 1862 Rana temporaria var agilis Schreiber 1875 Rana temporaria agilis Bedriaga 1881 Rana agilis agilis Cope 1886 Rana Crotaphitis agilis Schultze 1891 Rana Rana dalmatina Guibe 1950 Rana agiloides Brunner 1951 Rana mulleri Brunner 1959 Rana Rana dalmatina Dubois 1987 Rana Laurasiarana dalmatina Hillis amp Wilcox 2005 Contents 1 Description 2 Reproduction 3 Feeding 4 Habitat 5 Distribution 6 References 7 External linksDescription editThis species is fat and has long limbs and a pointy snout Adult males are rarely larger than 6 5 cm while females can grow up to 8 cm Its dorsal surface is light brown reddish brown or light greyish brown with very little contrast Triangle shaped spots reach from the temple to the eardrum which are dark brown The underside of the agile frog is white without any spots During mating season the males often become dark brown 3 The hind legs are unusually long which allow this species to jump further than other similar frogs they have been known to jump up to two metres in distance The pupils are horizontal The colour of the upper third of the iris above the pupil is lighter and gold in coloration The tympanum is about the size of the diameter of the eye The gland stripes on the frog s back are not very developed and partially interrupted Reproduction edit nbsp Typically fixed spawn clump under water The call is a fairly quiet rog rog rog and can last for up to 12 seconds and almost sounds like a clucking chicken They often also call under water so the calls can only be heard from a very short distance by observers Spawning only lasts a few days and during this period the males sometimes gather in large calling groups on the water surface to attract females In Central Europe spawning usually occurs in the first 20 days of March but can also be delayed depending on the weather The spawn clumps consist of 450 to 1800 eggs and are usually attached to tree branches roots or plant stems at depths of 5 40 cm 2 16 in Therefore they rarely sink to the bottom Unlike the moor frog Rana arvalis and common frog Rana temporaria the agile frog does not lay its spawn all in one clump The diameter of a single egg not counting the gelatinous shell is 1 5 2 1 mm 0 06 0 08 in 3 Feeding editAdults of agile frog eat arthropods like caterpillars spiders millipedes flies beetles cicadas and collembolans 4 5 6 7 Tadpoles eat plant material 8 Habitat editThe agile frog prefers light deciduous mixed forests with plentiful water The open land around a forest is often also populated as long as it is connected to the forest by shrubs In dry warm forests this species often also lives far away from the water Of the three Middle European Rana species this frog likes warmth and dryness the most 1 Distribution editThe agile frog can be found in France the Channel Islands parts of Germany Denmark Sweden Italy the Czech Republic Slovakia Austria Hungary on the Balkans Greece and by the Black Sea The species once lived in the Great Britain during middle Saxon times with archaeological remains recovered in East Anglia 9 10 Celtic Reptile amp Amphibian have discussed reintroducing the species 11 12 It has undergone a reintroduction on Jersey by Durrell Wildlife Conservation Trust as it was very close to extirpation on the island 13 14 References edit a b U ur Kaya Sergius Kuzmin Max Sparreboom et al 2009 Rana dalmatina IUCN Red List of Threatened Species 2009 e T58584A11790570 doi 10 2305 IUCN UK 2009 RLTS T58584A11790570 en Retrieved 19 November 2021 Frost Darrel R 2013 Rana dalmatina Fitzinger 1839 Amphibian Species of the World 5 6 an Online Reference American Museum of Natural History Retrieved 27 November 2013 a b Rana dalmatina AmphibiaWeb Retrieved 16 April 2021 Cicort Lucaciu Alfred Stefan Sas Istvan Roxin Maria Badar Larisa Goilean Camelia 2011 The feeding study of a Rana dalmatina population from Carei plain PDF South Western Journal of Horticulture Biology and Environment 2 1 35 46 Retrieved 26 April 2024 Guidali Franca Scali Stefano Carettoni Alessia 1 January 2000 Diet and trophic niche overlap of two ranid species in northern Italy Italian Journal of Zoology 67 1 67 72 doi 10 1080 11250000009356297 Hodisan Oana Irina Benchis Andrei Gabrian Daniel Badar Larisa Toader Simona 2010 The trophic spectrum of two brown frog populations Rana dalmatina and Rana temporaria from Baia de Fier area Romania PDF Herpetologia romanica 4 7 16 Retrieved 26 April 2024 Aszalos Lilla Bogdan Horia Kovacs Eva Hajnalka Peter Violeta Ionela 2005 Food composition of two Rana species on a forest habitat Livada Plain Romania PDF North Western Journal of Zoology 1 25 30 Retrieved 26 April 2024 Reeder W G 1964 The digestive tract In Moore John A ed Physiology of Amphibia New York Academic Press pp 99 149 Gleed Owen Chris Paul March 2000 Subfossil records of Rana cf lessonae Rana arvalis and Rana cf dalmatina from Middle Saxon c 600 950 AD deposits in eastern England Evidence for native status Amphibia Reptillia 57 65 via Research Gate Snell Charles 2006 02 01 Status of the common tree frog in Britain British Wildlife 17 153 160 Who doesn t love a turtle The teenage boys on a mission to rewild Britain with reptiles the Guardian 2021 01 10 Retrieved 2021 10 27 Guest blog by Celtic Reptile and Amphibian Mark Avery markavery info Retrieved 2021 10 27 Inside the Islands Jersey s Agile Frogs ITV News 2019 07 21 Retrieved 2021 10 27 Agile frog Durrell Wildlife Conservation Trust wildlife durrell org Retrieved 2021 10 27 External links edit nbsp Media related to Rana dalmatina at Wikimedia Commons Retrieved from https en wikipedia org w index php title Agile frog amp oldid 1220883363, wikipedia, wiki, book, books, library,

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