Description
(
英語
)
由AmphibiaWeb articles提供
A large Hyperolius (males 29–33 mm) from montane forests in central Africa. Dorsum uniform brownish to orange, uniform or with diffuse dark spots. A dark canthal line. Vocal sac in calling males bright green. Ventrum bright orange. Pupil horizontal (Schiøtz 1999).Hyperolius discodactylus was split from a similar species, Hyperolius alticola. When they were differentiated as separate species, it was for a myriad of reasons, on of them being differences in species among morphological traits such as the interorbital space, tympanum, toe webbing, tibia length, subarticular tubercle, and skin of belly. For the space between its eyes, the difference is in width were that H. discodactylus is two times the width of the top eyelid while H. alticola is 1.5 times as wide as the top eyelid. The tympanum on H. alticola is smaller and free verses hidden under a thin layer of skin on H. discodactylus. The bellies of these species differ in that H. discodactylus has clear postpectoral folds while H. alticola does not. The same is seen with the temporofemoral fold between species. The other morphological differences are in length with slight noticeable variation (Liedtke et al. 2014).In preservative (ethanol): This species dorsum and posterior area below the ribs of this species are a brownish white coloration with darker peppered pigmentation forming a canthal line along its body. Its ventral coloration is a uniform pale yellow (Liedtke et al. 2014).The specimens described here were very similar to H. frontalis collected nearby (Schiøtz 1999). Initially they were described as H. alticola, but H. discodactylus has priority as the name (Schiøtz 1999; Frost 2007). However, the recent rediscovery of H. alticola has led to the split of the two species again (Liedtke et al. 2014).The two species of reed frogs were first discovered by Ernst Ahl in 1931. He found these species inhibiting the forests of the Albertine Rift in Eastern Africa. The two were synonymized by Raymond Green two decades later but a conclusive decision on this taxonomy was never made because the type material for H. alticola was lost. After the material was recently rediscovered, the validity of Laurent’s synonymy has been under reassessment. Genetic findings suggest a Northern and Southern clade and diverging morphologies also suggest a split between species. Though genetic and morphological differences are marginal, they reflect population level variation thus further supporting the continuation of H. discodactylus and the discontinuation of H. alticola is a valid taxon (Liedtke et al. 2014).The majority of this account was taken from "Treefrogs of Africa" by Arne Schiøtz with kind permission from Edition Chimaira publishers, Frankfurt am Main.The species authority is: Ahl, E. (1931b) Zur Systematik der afrikanischen Artes der Baumfrochgattung Hyperolius. Mitteilungen aus dem Zoologischen Museum in Berlin, 17 (1), 1–132.
Liedtke, H. C., D. Hugli, J. M. Dehling, F. Pupin, M. Menegon, and A. J. Plumptre. ''One or Two Species? On the Case of Hyperolius Discodactylus Ahl, 1931 and H. Alticola Ahl, 1931 (Anura: Hyperoliidae).''Zootaxa 3768.3 (2014): 253-90. Print.
Distribution and Habitat
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英語
)
由AmphibiaWeb articles提供
Found in high-elevation montane forest along streams in western Rwanda, western Burundi, southwestern Uganda, and eastern D. R. Congo (Channing and Howell 2006).
Life History, Abundance, Activity, and Special Behaviors
(
英語
)
由AmphibiaWeb articles提供
Although the species was initially listed as "Vulnerable", it is now considered "Least Concern". Threats to this species include agriculture, aquaculture, biological resource use, logging, small holder farming, ranching, and grazing. It also lives in a highly fragmented habitat (IUCN SSC 2013).
Life History, Abundance, Activity, and Special Behaviors
(
英語
)
由AmphibiaWeb articles提供
The call is a rather long buzzing with a duration of about 0.3 sec and a frequency-intensity maximum at about 2000–2500 cps (Schiøtz 1999).
Biology
(
英語
)
由Arkive提供
Very little is known about Hyperolius discodactylus or indeed about most of the species within the genus. In the wet season the reed frogs tend to gather near water, preferably smaller temporary water bodies, where they breed. However, very little is known of their whereabouts outside the breeding season (6). Most, if not all, Hyperolius species from forest habitats deposit eggs in a gelatinous mass on vegetation above water, while some savanna-living species lay their eggs aquatically (5) (6).
Conservation
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英語
)
由Arkive提供
There are no known conservation measures for Hyperolius discodactylus, but it is known to be present in at least three protected areas, Bwindi National Park and Ruwenzori Mountains National Park in Uganda, and Virungas National Park in the Democratic Republic of Congo (1).
Description
(
英語
)
由Arkive提供
Hyperolius discodactylus is one of at least nine Hyperolius species endemic to the Albertine Rift, one of the richest sites for biodiversity in Africa (1) (3). In common with many species within this genus, it has moderately long-limbs and large toe pads that aid its largely arboreal lifestyle (4) (5). The smooth back of this species varies in colour between brown and orange and is sometimes dotted with diffuse dark spots. Underneath it is bright orange except for the male vocal sac which is bright green (2). The call of male Hyperolius discodactylus is a fairly long buzzing (2).
Habitat
(
英語
)
由Arkive提供
Hyperolius discodactylus occurs along streams in montane forests (6).
Range
(
英語
)
由Arkive提供
Found in the Albertine Rift, encompassing parts of eastern Democratic Republic of Congo, western Rwanda, western Burundi, and south-western Uganda (1).
Status
(
英語
)
由Arkive提供
Classified as Vulnerable (VU) on the IUCN Red List (1).
Threats
(
英語
)
由Arkive提供
In common with other reed frogs endemic to the Albertine Rift, the distribution of Hyperolius discodactylus is severely fragmented and its population is probably declining because of a decrease in the quality and extent of its habitat. Wood extraction, habitat conversion for agriculture and encroaching human settlement are thought to be principally responsible for habitat degradation in the Albertine Rift (1).
Hyperolius discodactylus
(
加泰隆語
)
由wikipedia CA提供
Hyperolius discodactylus: Brief Summary
(
加泰隆語
)
由wikipedia CA提供
Hyperolius discodactylus és una espècie de granota que viu a Burundi, la República Democràtica del Congo, Ruanda i Uganda.
Es troba amenaçada d'extinció per la pèrdua del seu hàbitat natural.
Hyperolius discodactylus
(
英語
)
由wikipedia EN提供
Hyperolius discodactylus is a species of frogs in the family Hyperoliidae.[2][4] It occurs in the montane areas of eastern Democratic Republic of the Congo and western Uganda, Rwanda, and Burundi. It is also known as the Albertine Rift reed frog, highland reed frog, or disc-fingered reed frog.[2][1]
Description
Adult males measure 27–35 mm (1.1–1.4 in) and adult females 30–39 mm (1.2–1.5 in) in snout–urostyle length. The fingers bear large discs and are up to half-webbed. The toes have somewhat smaller discs and are about half-webbed.[3] The dorsum is brownish to orange, either uniform or displaying diffuse dark spots. A dark canthal line is present. Calling males have bright green vocal sac. The venter is bright orange.[4]
Habitat and conservation
Hyperolius discodactylus occurs in montane forests at elevations of 1,600–2,700 m (5,200–8,900 ft) above sea level. It is associated with rivers, streams, and swamps, its presumed breeding habitat.[1]
It is mostly a rarely encountered species. Precise information is lacking but it might be threatened by habitat loss caused by agriculture, wood extraction, and human settlements. However, it is present in a number of protected areas: Bwindi and Ruwenzori Mountains National Parks in Uganda, Nyungwe National Park in Rwanda, Bururi Nature Reserve in Burundi, and Kahuzi-Biega and Virunga National Parks in the Democratic Republic of Congo.[1]
References
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^ a b c d IUCN SSC Amphibian Specialist Group (2013). "Hyperolius discodactylus". IUCN Red List of Threatened Species. 2013: e.T56130A16939295. doi:10.2305/IUCN.UK.2013-2.RLTS.T56130A16939295.en. Retrieved 17 November 2021.
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^ a b c Frost, Darrel R. (2018). "Hyperolius discodactylus Ahl, 1931". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 16 December 2018.
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^ a b Liedtke, H. Christoph; Kujirakwinja, Deo; Plumptre, Andrew J.; Menegon, Michele; Pupin, Fabio; Dehling, J. Maximilian; Hügli, Dominik & Loader, Simon P. (2014). "One or two species? On the case of Hyperolius discodactylus Ahl, 1931 and H. alticola Ahl, 1931 (Anura: Hyperoliidae)". Zootaxa. 3768 (3): 253–290. doi:10.11646/zootaxa.3768.3.2.
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^ a b "Hyperolius discodactylus". AmphibiaWeb. University of California, Berkeley. 2014. Retrieved 16 December 2018.
Hyperolius discodactylus: Brief Summary
(
英語
)
由wikipedia EN提供
Hyperolius discodactylus is a species of frogs in the family Hyperoliidae. It occurs in the montane areas of eastern Democratic Republic of the Congo and western Uganda, Rwanda, and Burundi. It is also known as the Albertine Rift reed frog, highland reed frog, or disc-fingered reed frog.
Hyperolius discodactylus
(
西班牙、卡斯蒂利亞西班牙語
)
由wikipedia ES提供
Hyperolius discodactylus: Brief Summary
(
西班牙、卡斯蒂利亞西班牙語
)
由wikipedia ES提供
Hyperolius discodactylus es una especie de anfibios de la familia Hyperoliidae. Habita en Burundi, República Democrática del Congo, Ruanda y Uganda. Su hábitat natural incluye montanos secos y ríos. Está amenazada de extinción por la pérdida de su hábitat natural.
Hyperolius discodactylus
(
巴斯克語
)
由wikipedia EU提供
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Hyperolius discodactylus: Brief Summary
(
巴斯克語
)
由wikipedia EU提供
Hyperolius discodactylus Hyperolius generoko animalia da. Anfibioen barruko Hyperoliidae familian sailkatuta dago, Anura ordenan.
Hyperolius discodactylus
(
法語
)
由wikipedia FR提供
Hyperolius discodactylus est une espèce d'amphibiens de la famille des Hyperoliidae[1].
Répartition
Cette espèce se rencontre entre 1 600 et 2 700 m d'altitude[1],[2] :
Publication originale
- Ahl, 1931 : Amphibia, Anura III, Polypedatidae. Das Tierreich, vol. 55, p. 477.
Notes et références
Hyperolius discodactylus: Brief Summary
(
法語
)
由wikipedia FR提供
Hyperolius discodactylus est une espèce d'amphibiens de la famille des Hyperoliidae.
Hyperolius discodactylus
(
越南語
)
由wikipedia VI提供
Hyperolius discodactylus: Brief Summary
(
越南語
)
由wikipedia VI提供
Hyperolius discodactylus là một loài ếch thuộc họ Hyperoliidae. Loài này có ở Burundi, Cộng hòa Dân chủ Congo, Rwanda, và Uganda. Môi trường sống tự nhiên của chúng là vùng núi ẩm nhiệt đới hoặc cận nhiệt đới và sông ngòi. Chúng hiện đang bị đe dọa vì mất môi trường sống.