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Distribution and Habitat

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Population and Distribution Litoria olongburensis is distributed from L. Woongeel, Fraser Is., s. to near Woolgoolga including Bribie, Moreton and Stradbroke Is., s.e. Qld (Hines et al. 1999). The area of occupancy of the species is approximately 9000 km2 (map in Hines et al. 1999). There is no information on population size, structure or dynamics (Hines et al. 1999). Litoria olongburensis exhibits genetic structuring on a north-south gradient (James 1996). Northern NSW, North Stradbroke Is., Moreton Is. and Cooloola-Fraser populations are each genetically differentiated and significantly divergent from each other (James 1996). Populations occurring on these islands should be considered separate management units or demographically independent sets of populations due to their insular nature (James 1996). Litoria olongburensis is known from a number of mainland and island conservation reserves and public lands in Qld and NSW. In Qld, L. olongburensis has been recorded from Great Sandy, Cooloola, Noosa, Bribie Is., Moreton Is. and Blue L. NP, Beerwah, Tuan and Toolara SF, crown lands north of Coolum and West of Marcoola (Sunshine Coast) and North Stradbroke Is. (Tyler 1997). In NSW L. olongburensis has been recorded from Broadwater, Bundjalung, and Yuraygir NP, Tyagarah and Broken Head Nature Reserves, crown lands south of Yamba and west of Brunswick Heads, Cape Byron Headland Reserve. Also recorded outside of these areas in NSW: west of Tyagarah Nature Reserve, Round Mountain near L. Cudgen, Jali Council land at Newrybar, Cobaki L., Hastings Point (Tyler 1997) and in the Gold Coast Airport land on the NSW � Qld border (Hero pers. comm.).HabitatLitoria olongburensis is restricted to coastal lowlands and sand islands where there are low nutrient soils or deep sands (Hines et al. 1999). Vegetation types typical of these environments include heathland, Melaleuca swamp, sedgeland and Banksia woodland (Hines et al. 1999). It occurs in low pH waters characteristic of wallum environments, along flowing creeks, in marshy or swampy habitats (usually temporary or semi-permanent) and their connecting channels, and coastal freshwater lakes, including perched lakes with deep water (often permanent) (Liem & Ingram 1977; James 1996; Ehmann 1997). During wet periods these swamps are heavily inundated and L. olongburensis are found clinging to emergent vegetation (grasses, reeds and Bungwall Fern E. Meyers pers. comm.) During dry periods individuals may be found at the base of sedges, grass clumps and/or Bungwall Fern in the same swamps (E. Meyer pers. comm.). Ingram and Corben (1975) termed L. olongburensis an �acid� frog as this species is confined to sandy heaths and their acidic water. Non breeding habitat not known.

References

  • Catterall, C.P. and Kingston, M. (1993). Remnant Bushland of South East Queensland in the 1990's: Its Distribution, Loss, Ecological Consequences and Future Prospects. Institute of Applied Environmental Research, Griffith University and Brisbane City Council, Brisbane, Australia.
  • Ehmann, H. (1997). ''21. Wallum Sedgefrog, Litoria olongburensis.'' Threatened Frogs of New South Wales: Habitats, Status and Conservation. H. Ehmann, eds., Frog and Tadpole Study Group of NSW, Sydney South, Australia, 182-187.
  • Ingram, G.J. and Corben, C.J. (1975). ''The frog fauna of North Stradbroke Island, with comments on the 'acid' frogs of the wallum.'' Proceedings of the Royal Society of Queensland, 86, 49-54.
  • James, C. (1996). Conservation Genetics of Island and Mainland Populations of the Sedge Frogs Litoria cooloolensis and Litoria olongburensis. Unpublished final report to Queensland Department of Environment and Heritage, Department of Zoology and Centre for Conservation Biology, University of Queensland.
  • Liem, D.S and Ingram, G.J. (1977). ''Two new species of frogs (Anura: Myobatrachidae, Pelodryadidae) from Queensland and New South Wales.'' Victorian Naturalist, 94, 255-262.

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Life History, Abundance, Activity, and Special Behaviors

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ReproductionLimited information is available on the breeding biology of the species. Ehmann (1997) recorded males calling in spring, summer and early autumn at night and by day when swamps were rising or ample water was available. Litoria olongburensis mainly breeds following heavy rain in perched swamps, amidst sedges, grasses and/or Bungwell Fern (Blechnum indicum) in still water 0.5-1.5 m deep (E. Meyer pers. comm.). The wallum waters in which the species breeds are typically heavily tanin-stained, highly acidic and generally dillute (E. Meyer pers. comm.). Eggs are attached to grasses and sedges and larvae are nektonic in form and dwell amongst reeds and grasses in water 0.5-1.5 m deep (E. Meyer pers. comm.). Fish are largely absent from habitat occupied by the species (E. Meyer pers. comm.). FeedingLarval L. olongburensis appear to subsist on biofilm enveloping reeds (James 1996; E. Meyers pers. comm.). Adult diet is unknown.Invasive species:Weed invasion is a potentially threatening process (Hines et al. 1999). Competition from invading frog species and predation from introduced fish (ie. Gambusia holbrooki) have been identified as potentially threatening processes (Ehmann 1997; Hines et al. 1999) however remain untested.MovementsDispersal abilities and the frequency or likelihood of colonisation events are not known. However, its use of recently created or rehabilitated sites for reproduction suggests that they are quite successful colonists provided there is a natural corridor to aid dispersal (James 1996). The disjunct distribution of the species is associated with considerable genetic structuring between populations (James 1996). Historically, though, dispersal between isolated habitats almost certainly involved short term opportunistic movement across areas during wet periods and long-term population dispersal along suitable corridors (coastal swamps and wallum plains) (James 1996).
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Life History, Abundance, Activity, and Special Behaviors

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Populations appear to be relatively stable in protected habitat, however this species is at risk from continuing loss of habitat through clearing for agriculture, pine plantations, housing and infrastructure such as canal development, drainage projects and transport corridors (Ingram & McDonald 1993; Hines et al. 1999). Melaleuca forest and heathland are particularly threatened and have been extensively cleared since 1974 (Catterall and Kingston 1993) suggesting an extensive loss of habitat. Other threats include habitat degradation through changes in hydrological regimes, increased nutrients or sediments, weed invasion, inappropriate fire management, competition from invading frog species and predation from introduced fish (Hines et al. 1999).
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Litoria olongburensis ( Catalan; Valencian )

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Litoria olongburensis és una espècie de d'amfibi anur del gènere Litoria de la família Hylidae. Originària d'Austràlia.

 src= A Wikimedia Commons hi ha contingut multimèdia relatiu a: Litoria olongburensis Modifica l'enllaç a Wikidata
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Wallum sedge frog

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The wallum sedge frog (Litoria olongburensis), also known as the Olongburra frog or the sharp-snouted reed frog, is a species of frog that is endemic to Australia. Varying in color from brown to dark green it inhabits the thick and often acidic marshes of the Wallum along the coast of Queensland and New South Wales. Mating season comes in early spring, often after heavy rainfalls. Females attach their eggs to grasses and sedges. Their call is high pitched and follows a "creeeek... crik" pattern.

Its natural habitats are subtropical or tropical swamps, wallum swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, and intermittent freshwater marshes.

The species is considered vulnerable with there being about 10,000–50,000 such frogs in the wild. Despite conservation efforts, the population continues to decrease. Loss of habitat, invasive plants, and disease (most notably chytrid fungus) are contributing to the loss of population.

References

  1. ^ Harry Hines, David Newell, Ed Meyer, Jean-Marc Hero, John Clarke (2004). "Litoria olongburensis". IUCN Red List of Threatened Species. 2004: e.T41037A10392098. doi:10.2305/IUCN.UK.2004.RLTS.T41037A10392098.en. Retrieved 18 November 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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Wallum sedge frog: Brief Summary

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The wallum sedge frog (Litoria olongburensis), also known as the Olongburra frog or the sharp-snouted reed frog, is a species of frog that is endemic to Australia. Varying in color from brown to dark green it inhabits the thick and often acidic marshes of the Wallum along the coast of Queensland and New South Wales. Mating season comes in early spring, often after heavy rainfalls. Females attach their eggs to grasses and sedges. Their call is high pitched and follows a "creeeek... crik" pattern.

Its natural habitats are subtropical or tropical swamps, wallum swamps, freshwater lakes, intermittent freshwater lakes, freshwater marshes, and intermittent freshwater marshes.

The species is considered vulnerable with there being about 10,000–50,000 such frogs in the wild. Despite conservation efforts, the population continues to decrease. Loss of habitat, invasive plants, and disease (most notably chytrid fungus) are contributing to the loss of population.

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Litoria olongburensis ( Spanish; Castilian )

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Litoria olongburensis (wallum sedge frog), llamada Olongburra frog o sharp-snouted reed frog, es una especie de anfibio anuro del género Litoria, de la familia Hylidae. Es originaria de Australia.[1][2][3]

El macho adulto mide 2.5 cm de largo y la hembra 2.7 a 3.1 cm. Es gris, marrón o verde brillante, con color azul o naranja en sus patas. Tiene rayas marrones y blancas y un vientre blanco. Tiene solo una pequeña cincha en las patas delanteras y más en las patas traseras. Tiene discos grandes en los dedos para escalar. Tiene dientes de vomerina en la mandíbula superior.[1]​ Vive en las tierras bajas costeras y en islas con suelo arenoso; en arroyos y pantanos que tienen agua ácida (pH 2.8-5.5), incluyendo el wallum.[4][2]​ La tolerancia al ácido de esta rana le ayuda a sobrevivir en donde de otro modo tendría que competir con otras ranas por comida.[1]​ Las ranas adultas trepan en plantas de juncia durante el día.[5]

Pone huevos en agua ácida (pH [1]

Está en peligro de extinción debido a la fragmentación del hábitat y la actividad humana. Las personas que visitan la playa a menudo pisotean las plantas de las que depende la rana. Los científicos también piensan que la enfermedad fúngica quitridiomicosis podría estar matando a estas ranas.[1]

 src=
Cerdos salvajes pueden perturbar el hábitat de wallum.

Científicos piensan que esta rana también está en peligro debido a especies invasoras. Plantas de otros lugares pueden cambiar el hábitat. Ranas de otros lugares pueden superar a las ranas locales. Peces de otros lugares, como pez mosquito de los Estados Unidos, comen los renacuajos y los huevos. Cerdos salvajes también pueden atravesar las hábitates y dañarlos.[1][2]

Referencias

  1. a b c d e f «Litoria olongburensis — Wallum Sedge Frog». Australian Government: Department of Water, Agriculture and the Environment. Consultado el 28 de junio de 2020.
  2. a b c J-M Hero; H. Hines; E. Meyers; R. Goldingay; L. Shoo; M. St (15 de marzo de 2002). «Litoria olongburensis: Olongburra Frog, Wallum Sedgefrog». Amphibiaweb. Consultado el 28 de junio de 2020.
  3. Harry Hines; David Newell; Ed Meyer; Jean-Marc Hero; John Clarke (2004). «Litoria olongburensis» 2004. The IUCN Red List of Threatened Species. p. T41037A10392098. doi:10.2305/IUCN.UK.2004.RLTS.T41037A10392098.en. Consultado el 28 de junio de 2020.
  4. «Olongburra Frog - profile». New South Wales Government Office of Environment & Heritage. Consultado el 28 de junio de 2020.
  5. Jon D. Shuker; John-Marc Hero (2012). «Perch substrate use by the threatened wallum sedge frog (Litoria olongburensis) in wetland habitats of mainland eastern Australia». Australian J. of Zoology 60 (4): 219-224. doi:10.1071/ZO12030. Consultado el 28 de junio de 2020.
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Litoria olongburensis: Brief Summary ( Spanish; Castilian )

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Litoria olongburensis (wallum sedge frog), llamada Olongburra frog o sharp-snouted reed frog, es una especie de anfibio anuro del género Litoria, de la familia Hylidae. Es originaria de Australia.​​​

El macho adulto mide 2.5 cm de largo y la hembra 2.7 a 3.1 cm. Es gris, marrón o verde brillante, con color azul o naranja en sus patas. Tiene rayas marrones y blancas y un vientre blanco. Tiene solo una pequeña cincha en las patas delanteras y más en las patas traseras. Tiene discos grandes en los dedos para escalar. Tiene dientes de vomerina en la mandíbula superior.​ Vive en las tierras bajas costeras y en islas con suelo arenoso; en arroyos y pantanos que tienen agua ácida (pH 2.8-5.5), incluyendo el wallum.​​ La tolerancia al ácido de esta rana le ayuda a sobrevivir en donde de otro modo tendría que competir con otras ranas por comida.​ Las ranas adultas trepan en plantas de juncia durante el día.​

Pone huevos en agua ácida (pH

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Litoria olongburensis ( Basque )

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Litoria olongburensis Litoria generoko animalia da. Anfibioen barruko Hylidae familian sailkatuta dago, Anura ordenan.

Erreferentziak

Ikus, gainera

Kanpo estekak

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Litoria olongburensis: Brief Summary ( Basque )

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Litoria olongburensis Litoria generoko animalia da. Anfibioen barruko Hylidae familian sailkatuta dago, Anura ordenan.

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Litoria olongburensis ( French )

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Litoria olongburensis est une espèce d'amphibiens de la famille des Pelodryadidae[1].

Répartition

Cette espèce est endémique d'Australie. Elle se rencontre de l'île Fraser dans le Sud-Est du Queensland jusqu'à Woolgoolga en Nouvelle-Galles du Sud, y compris dans les îles Bribie, Moreton et les îles Stradbroke-Nord et Stradbroke-Sud[2].

Description

Les femelles mesurent de 27 à 31 mm[3].

Étymologie

Son nom d'espèce, composé de olongbur[a] et du suffixe latin -ensis, « qui vit dans, qui habite », lui a été donné en référence au lieu de sa découverte, le territoire des Olongbura.

Publication originale

  • Liem & Ingram, 1977 : Two new species of frogs (Anura: Myobatrachidae, Pelodryadidae) from Queensland and New South Wales. Victorian Naturalist, vol. 94, no 6, p. 255-262 (texte intégral).

Notes et références

  1. 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. Tyler & Knight, 2011 : Field Guide to the Frogs of Australia: Revised Edition. Csiro Publishing, p. 1-188.
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Litoria olongburensis: Brief Summary ( French )

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Litoria olongburensis est une espèce d'amphibiens de la famille des Pelodryadidae.

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Litoria olongburensis ( Vietnamese )

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Litoria olongburensis là ếch loài đặc hữu của Úc. Màu sắc thay đổi màu sắc từ màu nâu đến màu xanh đậm, sinh sống đầm lầy dày và thường có tính axit của Wallum dọc theo bờ biển Queensland và New South Wales. Chúng giao phối mùa đến vào đầu mùa xuân, thường sau khi mưa lớn. Môi trường sống tự nhiên của nó là vùng đầm lầy nhiệt đới hoặc cận nhiệt đới, các đầm lầy Wallum, hồ nước ngọt, hồ nước ngọt liên tục, đầm lầy nước ngọt, và nước ngọt liên tục tuần hành.

Loài này được coi là dễ bị tổn thương có khoảng 10.000-50.000 con ếch như vậy trong tự nhiên. Bất chấp những nỗ lực bảo tồn, dân số tiếp tục giảm. Mất môi trường sống, thực vật xâm lấn, và bệnh tật (đặc biệt là nấm chytrid) đang góp phần vào sự mất mát của số lượng loài này.

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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Litoria olongburensis: Brief Summary ( Vietnamese )

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Litoria olongburensis là ếch loài đặc hữu của Úc. Màu sắc thay đổi màu sắc từ màu nâu đến màu xanh đậm, sinh sống đầm lầy dày và thường có tính axit của Wallum dọc theo bờ biển Queensland và New South Wales. Chúng giao phối mùa đến vào đầu mùa xuân, thường sau khi mưa lớn. Môi trường sống tự nhiên của nó là vùng đầm lầy nhiệt đới hoặc cận nhiệt đới, các đầm lầy Wallum, hồ nước ngọt, hồ nước ngọt liên tục, đầm lầy nước ngọt, và nước ngọt liên tục tuần hành.

Loài này được coi là dễ bị tổn thương có khoảng 10.000-50.000 con ếch như vậy trong tự nhiên. Bất chấp những nỗ lực bảo tồn, dân số tiếp tục giảm. Mất môi trường sống, thực vật xâm lấn, và bệnh tật (đặc biệt là nấm chytrid) đang góp phần vào sự mất mát của số lượng loài này.

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