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Description

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The body of R. tsushimensis is slender. The canthus is blunt and concave. The tympanum is circular, and there are 2-6 vomerine teeth which are oval. There is moderate webbing, where the broad web leaves 1-2 phalanges in males and 2-3 in females free on the outer margin of 4th toe. The inner metatarsal tubercle is elliptical, and the outer one is small but distinct. The skin on the back of the frog is covered with small granules which have asperities on them. The dorsolateral fold is evident, slightly flaring outwards above tympanum, and the supratympanic fold is blunt. The mean snout-vent length of males is 35 mm (range 31-37) and for females, 45 mm (range 37-44). There is no vocal sac or vocal opening, and the nuptial pads in males are grayish brown.The type locality is Tsushima Island. R. tsushimensis is sometimes regarded as a subspecies of R. amurensis, but it isn't, because artificially produced hybrid embryos between R. tsushimensis and R. a. coreana are not viable. The species is closely related to R. okinavana, and these probably bridge R. japonica and R. tagoi.Diploid chromosome (2n), with 5 large pairs and 8 small ones making a total of 26 chromosomes.
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Distribution and Habitat

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This species inhabits plains and hillsides and is endemic to Tsushima, Japan.
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Life History, Abundance, Activity, and Special Behaviors

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This species breeds from January to April in still waters in rice fields, ponds, ditches and pools. It is often sympatric with R. dybowskii. However, different calls seem to prevent hybridization. Females lay approximately 400-500 eggs each. The eggs have a diameter of 1.7-2.3 mm. The larva usually have a dark spot on each side of their back.Mating call duration is 1 sec with 3-5 notes. Dominating frequency 2.1 kHz, with marked frequency modulation and clear harmonics.
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Tsushima brown frog

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The Tsushima brown frog or Tsushima leopard frog (Rana tsushimensis) is a species of frog in the family Ranidae. It is endemic to the Tsushima Island, Japan.[1][2]

This species is common and occurs in forests and streams from lowland to hilly areas. Breeding takes place in rice paddies, ditches, swamps, and other wetland habitats. It is not facing any known threats, although its small range is a vulnerability.[1]

References

  1. ^ a b c IUCN SSC Amphibian Specialist Group (2021). "Rana tsushimensis". IUCN Red List of Threatened Species. 2021: e.T58741A179364440. doi:10.2305/IUCN.UK.2021-1.RLTS.T58741A179364440.en. Retrieved 16 November 2021.
  2. ^ a b Frost, Darrel R. (2020). "Rana tsushimensis Stejneger, 1907". Amphibian Species of the World: an Online Reference. Version 6.1. American Museum of Natural History. doi:10.5531/db.vz.0001. Retrieved 16 December 2020.
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Tsushima brown frog: Brief Summary

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The Tsushima brown frog or Tsushima leopard frog (Rana tsushimensis) is a species of frog in the family Ranidae. It is endemic to the Tsushima Island, Japan.

This species is common and occurs in forests and streams from lowland to hilly areas. Breeding takes place in rice paddies, ditches, swamps, and other wetland habitats. It is not facing any known threats, although its small range is a vulnerability.

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Rana tsushimensis ( Spanish; Castilian )

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Rana tsushimensis[2]​ es una especie de anfibio anuro de la familia Ranidae.

Distribución geográfica

Esta especie es endémica de la isla Tsushima en Japón.[3]

Taxonomía

Esta especie se considera a veces como una subespecie de Rana amurensis, pero este no es el caso, ya que las reproducciones artificiales entre Rana tsushimensis y Rana coreana dan como resultado híbridos no viables.

Descripción

Rana tsushimensis mide de 31 a 37 mm para los machos y de 37 a 44 mm para las hembras. Su piel es granular en la parte superior y su color general es marrón.

Etimología

El nombre de la especie está compuesto de tsushim[a] y del sufijo latino -ensis que significa "que vive, que habita", y le fue dado en referencia al lugar de su descubrimiento, la Isla Tsushima.

Publicación original

  • Stejneger, 1907 : Herpetology of Japan and adjacent Territory. United States National Museum Bulletin, vol. 58, p. 1-577[4]

Referencias

  1. IUCN SSC Amphibian Specialist Group. (2018). «Rana tsushimensis». Lista Roja de especies amenazadas de la UICN 2018.2 (en inglés). ISSN 2307-8235. Consultado el 1 de junio de 2019.
  2. NCBI : Rana tsushimensis especie de anfibio anuro Consultado el 1 de junio de 2019
  3. AmphibiaWeb : Rana tsushimensis (Stejneger, 1907) Consultado el 1 de junio de 2019
  4. Amphibian Species of the World: Rana tsushimensis (Stejneger, 1907) Consultado el 1 de junio de 2019

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Rana tsushimensis: Brief Summary ( Spanish; Castilian )

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Rana tsushimensis​ es una especie de anfibio anuro de la familia Ranidae.

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Rana tsushimensis ( Basque )

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Rana tsushimensis Rana generoko animalia da. Anfibioen barruko Ranidae familian sailkatuta dago, Anura ordenan.

Erreferentziak

Ikus, gainera

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Rana tsushimensis: Brief Summary ( Basque )

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Rana tsushimensis Rana generoko animalia da. Anfibioen barruko Ranidae familian sailkatuta dago, Anura ordenan.

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Rana tsushimensis ( French )

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Rana tsushimensis est une espèce d'amphibiens de la famille des Ranidae[1].

Répartition

Cette espèce est endémique de l'île Tsushima au Japon[1],[2].

Taxinomie

Cette espèce est parfois considérée[3] comme une sous-espèce de Rana amurensis mais ce n'est pas le cas dans la mesure où des reproductions artificielles entre Rana tsushimensis et Rana coreana se traduisent par des hybrides non viables.

Description

Rana tsushimensis mesure de 31 à 37 mm pour les mâles et de 37 à 44 mm pour les femelles. Sa peau est granuleuse sur le dessus et sa coloration générale est brune[3].

Étymologie

Son nom d'espèce, composé de tsushim[a] et du suffixe latin -ensis, « qui vit dans, qui habite », lui a été donné en référence au lieu de sa découverte, l'île Tsushima.

Publication originale

  • Stejneger, 1907 : Herpetology of Japan and adjacent Territory. United States National Museum Bulletin, vol. 58, p. 1-577 (texte intégral).

Notes et références

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Rana tsushimensis: Brief Summary ( French )

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Rana tsushimensis est une espèce d'amphibiens de la famille des Ranidae.

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Rana tsushimensis ( Vietnamese )

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Rana tsushimensis là một loài ếch trong họ Ranidae. Chúng là loài đặc hữu của Nhật Bản.

Các môi trường sống tự nhiên của chúng là rừng ôn đới, sông, đất có tưới tiêu, và kênh đào và mương rãnh.

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Rana tsushimensis: Brief Summary ( Vietnamese )

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Rana tsushimensis là một loài ếch trong họ Ranidae. Chúng là loài đặc hữu của Nhật Bản.

Các môi trường sống tự nhiên của chúng là rừng ôn đới, sông, đất có tưới tiêu, và kênh đào và mương rãnh.

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