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Distribution

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In the provinces of Corrientes, Chaco, Entre Ríos, Formosa, Salta, and Santa Fé in Argentina, southern Mato Grosso and Mato Grosso do Sul in Brazil, Departaments of Alto Paraguay, Boquerón, Central, Concepción, Cordillera, Presidente Hayes in Paraguay, and Santa Cruz in Bolivia.
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Diagnostic Description

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Adult morphology About 45 mm in the largest specimens. Body oval; head flattened, as long as wide, or slightly longer. Snout ogival, pointed and protruding. Canthus rostralis not evident; loreal region grooved behind the nostril. InternariaI interval narrower than the interocular distance, wichIis wider than the upper eyelid; nostrils very close to the tip of the snout. Vomerine teeth in two nearby, heavy patches between the small choanae. Tongue wide and circular, notched and slightly free behind. Eyeslarge and prominent, their diameter being shorter than the distance from nostril to eye. Tympanum round, large and distinct, 3/4 or more of eye diameter. A very deep supratympanic fold, from the eye to the shoulder. Fingers unwebbed, fringed; disks wide in frontal side, narrowing. Toward the base, the disk of the third finger covering more than 1/2 of the tympanum. Rate of the finger lengths : I-II-IV-III. Subarticular tubercles prominent. An elongate tubercle at the base of the first finger. Toes widely webbed and fringed; subarticular tubercles strong and conical; a moderate inner and a very small, rounded, outer metatarsal tubercle. No tarsal fold present. When hindleg is adpressed, heeI reaches the eye; when the femurs are bent at right angles to body, the tibiotarsal articulations greatly overlap. Skin rough on the dorsum, scattered with minute glandular warts. Ventrally coarsely granular, as papillose. A fold across the throat, a deeper one on the chest. Vocal sac of the males, not too much evident, faintly brownish. Ground color dark gray above, with the characteristic x-shaped pattern of dorso-lateral curved stripes; inward directed. A large dark interocular spot, forming a blunt triangle, having the base between the eyes and slightly expanding over upper eyelids. Sacral spots also present; wide, oblique bars on the upper surface of he limbs, alterning with narrower lines. Posterior parts of the thighs and concealed surfaces marvles with reddish or orange-brown. Ventrally whitish or yellowish, immaculate. Larval morphology Body depressed, semiglobular, rather pisciform in lateral view, ovoid in dorsal view. Eyes intermediate-sized and lateral; in dorsal view only half of the eyes are noted. Nostril apertures dorsal. Internostral distance equal to half interorbital distance. Spiracle sinistral, terminal, fused to body wall, with elliptical opening directed posteroventrally. Vent lube is long, with a broad base narrowing to a point, located at the right side of the body. Oral disc terminal on a rectangle protruding from the snout on dorsal and ventral views; emarginate laterally, with a single row of lateral marginal papillae. Papillae are intermediate-sized, single, triangular with pointed ends and some sparse dark spots. Labial teeth dark, in well spaced rows, tooth row formula 2(2)/2-3(1); lower row equal in length to the two previous tooth rows or half the length of them. Jaw sheaths heavy and dark-pigmented. Both sheaths slightly convex, none V-shaped. Tail weakly convex, with tip pointed. Caudal muscle heavy, dorsallventral fins similar in height except on the terminal end where the dorsal fin is deeper. In formalin, body dark brown above and belly silver. Dorsal surface of body with abundant dark dots, limited by a lateral dark stripe that begins on the snout, passing backwards through the eye and crossing the body. Ventrally transparent with very little pigmentation and the coiled intestine brown. Tail fins transparent to the naked eye, in magnification dorsal fin with fewer dark dots than in dorsal surface of body. Ventral fin with dark reticulations representing tail irrigation. Caudal muscle whitish. In the living tadpole iris is golden brown, more gold at inner edge of iris and progressively more brown towards outer edge; black pigment extends from eye to nostril; dense patches of melanin on dorsolateral surface of body behind eyes, reaching slightly below eye level and not extending dorsally to tail fin; lower sides and belly silver; indefmed black line from nostril through eye joining a more pronounced large black spot above arm: dorsal and ventral surface of tail with scattered patches of melanin; tail muscle slightly but evenly flecked with melanin; knee and feet with transverse melanin bands; toes especially have bilateral melanin lines on each toe. The smallest total length specimens were stages 2 5-26 with an average of 21 mm, the largest specimen was stage 42 with total length = 36 mm. The body length varied between 7.35 and 13.8 mm with great individual variation. Maximum body width varied between 4.92 and 7.53 mm. Other than metric characteristics and the teeth variation recorded for Scinax acuminatus tadpoles, no other morphological characters vary within the sample.
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Conservation Status

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LC. Least Concern.
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Brief Summary

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Diagnosis A robust, rough and glandulous medium size Scinax, with snout acuminate and very wide disks in hands and toes.
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Scinax acuminatus ( Catalan; Valencian )

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Scinax acuminatus és una espècie de granota que es troba a l'Argentina, Bolívia, Brasil, Paraguai i, possiblement també, a Uruguai.

Referències

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Scinax acuminatus: Brief Summary ( Catalan; Valencian )

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Scinax acuminatus és una espècie de granota que es troba a l'Argentina, Bolívia, Brasil, Paraguai i, possiblement també, a Uruguai.

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Scinax acuminatus ( German )

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Der neotropische Froschlurch Scinax acuminatus gehört zur Unterfamilie Knickzehenlaubfrösche (Scinaxinae) innerhalb der Familie der Laubfrösche. Innerhalb der Gattung Scinax wird die Art zur Scinax ruber-Klade gezählt.[1] Edward Drinker Cope beschrieb die Art in einer seiner ersten Publikationen zur Fauna des Gran Chaco.

Synonyme

  • Hyla acuminata Cope, 1862
  • Scytopsis acuminatus Cope, 1874
  • Hyla phrynoderma Boulenger, 1889
  • Hyla fiebrigi Ahl, 1927
  • Ololygon acuminata Fouquette & Delahoussaye, 1977
  • Scinax acuminata Duellman & Wiens, 1992

Köhler & Böhme (1996) berichtigten die Endung des Epitheton.

Verbreitung

Die Art kommt in Höhen von 150 bis zu 1000 m ü. NN vom Süden des brasilianischen Bundesstaates Mato Grosso und dem bolivianischen Teil des Pantanal über Paraguay und den brasilianischen Bundesstaat Mato Grosso do Sul bis Nordargentinien vor. Ob das Areal von Scinax acuminatus auch bis Uruguay reicht ist ungewiss.

Beschreibung

S. acuminatus unterscheidet sich in seinem Aussehen stark von den übrigen Vertretern. Er ist mit bis zu 45 mm Kopf-Rumpf-Länge (KRL) einer der größten und robustesten Vertreter der Gattung. Weibchen erreichen durchschnittlich 40–44 mm KRL und Männchen 39–43 mm KRL. Der Kopf ist flach und so lang wie breit oder etwas länger. S. acuminatus unterscheidet sich von anderen Knickzehenlaubfröschen besonders durch seine sehr warzige Haut. Zudem besitzt er eine charakteristische dunkle Musterung. Die Grundfärbung variiert von gräulich (argentinische Individuen) bis bräunlich (Paraguay, Brasilien). Die Innenseiten der Schenkel sind rötlich bis braun-orange.[2] S. acuminatus sieht Scinax fuscovarius ähnlich. Sicheres Unterscheidungsmerkmal zu diesem Knickzehenlaubfrosch ist neben der sehr warzigen Haut abweichende Färbung der Innenseiten der Schenkel (schwarz-gelb bei S. fuscovarius).[3]

Lebensraum und Ökologie

Scinax acuminatus lebt in Savannen und Buschland. Er findet sich oft in der Nähe von temporären, aber auch permanenten Gewässern, welche er auch zur Reproduktion nutzt.

Gefährdung

Die IUCN listet Scinax acuminatus als "nicht gefährdet" (Least Concern). Seine weite Verbreitung und die Tatsachen, dass sich die Art relativ gut an anthropogene Veränderungen anpassen kann, ein breites Spektrum von Habitaten annimmt, die Gesamtpopulation einen stabilem Trend zeigt und genügend groß geschätzt wird begründen dies. Die Bearbeiter sehen es als unwahrscheinlich an, dass die Bestände der Art schnell genug abnehmen können, um eine höhere Gefährdungsstufe zu rechtfertigen. Zudem kommt die Art in ihrem Verbreitungsgebiet in mehreren Schutzgebieten vor. Es bestehen keine Hauptgefährdungsgründe für die Art, obwohl Intensivierung der Landwirtschaft in Ostparaguay die dortigen Lokalpopulationen gefährden könnte.

Einzelnachweise

  1. J. Faivovich, C. F. B. Haddad, P. C. A. Garcia, D. R. Frost, J. A. Campbell, W. C. Wheeler: Systematic review of the frog family Hylidae, with special reference to Hylinae: Phylogenetic analysis and taxonomic revision. In: Bulletin of the American Museum of Natural History. Band 294, 2005.
  2. B. Lutz: Brazilian Species of Hyla. University of Texas Press, Austin/ London 1973, S. 132–133.
  3. Bilder Fauna Paraguay
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Scinax acuminatus: Brief Summary ( German )

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Der neotropische Froschlurch Scinax acuminatus gehört zur Unterfamilie Knickzehenlaubfrösche (Scinaxinae) innerhalb der Familie der Laubfrösche. Innerhalb der Gattung Scinax wird die Art zur Scinax ruber-Klade gezählt. Edward Drinker Cope beschrieb die Art in einer seiner ersten Publikationen zur Fauna des Gran Chaco.

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Scinax acuminatus

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Scinax acuminatus is a species of frog in the family Hylidae. It is found in Argentina, Bolivia, Brazil, Paraguay, and possibly Uruguay. Its natural habitats are moist savanna, subtropical or tropical moist shrubland, subtropical or tropical seasonally wet or flooded lowland grassland, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, pastureland, rural gardens, heavily degraded former forest, ponds, and canals and ditches. It breeds in bodies of water. It is threatened by eventual habitat loss, but the population is currently fairly stable, as it adapts fairly well to human encroachment and development.

References

  1. ^ Lucy Aquino, Rogério Bastos, Steffen Reichle, Débora Silvano, Diego Baldo (2004). "Scinax acuminatus". IUCN Red List of Threatened Species. 2004: e.T55921A11393010. doi:10.2305/IUCN.UK.2004.RLTS.T55921A11393010.en. Retrieved 15 November 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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Scinax acuminatus: Brief Summary

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Scinax acuminatus is a species of frog in the family Hylidae. It is found in Argentina, Bolivia, Brazil, Paraguay, and possibly Uruguay. Its natural habitats are moist savanna, subtropical or tropical moist shrubland, subtropical or tropical seasonally wet or flooded lowland grassland, freshwater lakes, intermittent freshwater lakes, freshwater marshes, intermittent freshwater marshes, pastureland, rural gardens, heavily degraded former forest, ponds, and canals and ditches. It breeds in bodies of water. It is threatened by eventual habitat loss, but the population is currently fairly stable, as it adapts fairly well to human encroachment and development.

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Scinax acuminatus ( Spanish; Castilian )

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Scinax acuminatus es una especie de anfibios de la familia Hylidae. Habita en Argentina, Bolivia, Brasil, Paraguay y posiblemente en Uruguay. Sus hábitats naturales incluyen sabanas secas, zonas de arbustos, praderas parcialmente inundadas, lagos de agua dulce, marismas de agua dulce, corrientes intermitentes de agua, pastos, jardines rurales, zonas previamente boscosas ahora muy degradadas, estanques, canales y diques. Está amenazada de extinción por la destrucción de su hábitat natural.

Referencias

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Scinax acuminatus: Brief Summary ( Spanish; Castilian )

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Scinax acuminatus es una especie de anfibios de la familia Hylidae. Habita en Argentina, Bolivia, Brasil, Paraguay y posiblemente en Uruguay. Sus hábitats naturales incluyen sabanas secas, zonas de arbustos, praderas parcialmente inundadas, lagos de agua dulce, marismas de agua dulce, corrientes intermitentes de agua, pastos, jardines rurales, zonas previamente boscosas ahora muy degradadas, estanques, canales y diques. Está amenazada de extinción por la destrucción de su hábitat natural.

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Scinax acuminatus ( Basque )

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Scinax acuminatus Scinax generoko animalia da. Anfibioen barruko Hylidae familian sailkatuta dago, Anura ordenan.

Erreferentziak

Ikus, gainera

Kanpo estekak

(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Scinax acuminatus: Brief Summary ( Basque )

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Scinax acuminatus Scinax generoko animalia da. Anfibioen barruko Hylidae familian sailkatuta dago, Anura ordenan.

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Scinax acuminatus ( French )

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Scinax acuminatus est une espèce d'amphibiens de la famille des Hylidae[1].

Répartition

Cette espèce se rencontre entre 150 et 1 000 m d'altitude dans le Pantanal[1],[2] :

Description

Les mâles mesurent de 39,0 à 45,0 mm[3].

Publication originale

  • Cope, 1862 : Catalogues of the Reptiles Obtained during the Explorations of the Parana, Paraguay, Vermejo and Uraguay Rivers, by Capt. Thos. J. Page, U. S. N.; And of Those Procured by Lieut. N. Michler, U. S. Top. Eng., Commander of the Expedition Conducting the Survey of the Atrato River. Proceedings of the Academy of Natural Sciences of Philadelphia, vol. 14, p. 346-359+594 (texte intégral).

Notes et références

  1. a et b Amphibian Species of the World, consulté lors d'une mise à jour du lien externe
  2. UICN, consulté lors d'une mise à jour du lien externe
  3. Araujo-Vieira, Valdujo & Faivovich, 2016 : A new species of Scinax Wagler (Anura: Hylidae) from Mato Grosso, Brazil. Zootaxa, no 4061(3), p. 261–273.
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Scinax acuminatus: Brief Summary ( French )

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Scinax acuminatus est une espèce d'amphibiens de la famille des Hylidae.

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Scinax acuminatus ( Portuguese )

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Scinax acuminatus é uma espécie de anfíbio da família Hylidae. Pode ser encontrada na Argentina, Brasil, Paraguai e Bolívia.[2]

Referências

  1. Frost, D.R. (2014). «Scinax acuminatus». Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History, New York, USA. Consultado em 16 de dezembro de 2014
  2. a b Aquino, L.; Bastos, R.; Reichle, S.; Silvano, D.; Baldo, D. (2004). Scinax acuminatus (em inglês). IUCN 2014. Lista Vermelha de Espécies Ameaçadas da IUCN de 2014 . Página visitada em 16 de dezembro de 2014..
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Scinax acuminatus: Brief Summary ( Portuguese )

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Scinax acuminatus é uma espécie de anfíbio da família Hylidae. Pode ser encontrada na Argentina, Brasil, Paraguai e Bolívia.

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Scinax acuminatus ( Vietnamese )

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Đây là một bài mồ côi vì không có hoặc có ít bài khác liên kết đến nó.
Xin hãy tạo liên kết đến bài này trong các bài của các chủ đề liên quan. (tháng 7 năm 2018)

Scinax acuminatus là một loài ếch thuộc họ Nhái bén. Loài này có ở Argentina, Bolivia, Brasil, Paraguay, và có thể cả Uruguay. Môi trường sống tự nhiên của chúng là xavan ẩm, vùng cây bụi ẩm khu vực nhiệt đới hoặc cận nhiệt đới, đồng cỏ nhiệt đới hoặc cận nhiệt đới vùng ngập nước hoặc lụt theo mùa, hồ nước ngọt, hồ nước ngọt có nước theo mùa, đầm nước ngọt, đầm nước ngọt có nước theo mùa, vùng đồng cỏ, vườn nông thôn, rừng thoái hóa nghiêm trọng, ao, và kênh, mương. Chúng hiện đang bị đe dọa vì mất môi trường sống.

Tham khảo


Hình tượng sơ khai Bài viết liên quan đến họ Nhái bén (Hylidae) này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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Scinax acuminatus: Brief Summary ( Vietnamese )

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Scinax acuminatus là một loài ếch thuộc họ Nhái bén. Loài này có ở Argentina, Bolivia, Brasil, Paraguay, và có thể cả Uruguay. Môi trường sống tự nhiên của chúng là xavan ẩm, vùng cây bụi ẩm khu vực nhiệt đới hoặc cận nhiệt đới, đồng cỏ nhiệt đới hoặc cận nhiệt đới vùng ngập nước hoặc lụt theo mùa, hồ nước ngọt, hồ nước ngọt có nước theo mùa, đầm nước ngọt, đầm nước ngọt có nước theo mùa, vùng đồng cỏ, vườn nông thôn, rừng thoái hóa nghiêm trọng, ao, và kênh, mương. Chúng hiện đang bị đe dọa vì mất môi trường sống.

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