Dyscophus guineti — Details

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Overview

Comprehensive Description

Description

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A large conspicuously coloured frog. M 60-65 mm, F 90-95 mm. Dorsum yellowish in males, red-orange in females, often with many small reticulations. In both sexes often with a rhomboid dark marking. Ventrally uniform whitish. Skin smooth with two dorsolateral folds. Tympanum rather indisctinct, about 1/3 of eye diameter. Tibiotarsal articulation reaches the tympanum. Fingertips not enlarged. A large inner metatarsal tubercle. No webbing on hands, weakly expressed webbing on feet (Glaw and Vences 2007).

Similar species: Very similar to D. antongilii and only distinguishable by the relatively faint colour differences (Glaw and Vences 2007).
 
Taken with permission from Glaw and Vences (2007).

  • Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, Köln.
  • Nussbaum, R., Vences, M., and Cadle, J. (2008). Dyscophus guineti. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 08 April 2009.
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Distribution

Range Description

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This species occurs widely along the eastern rainforest belt of Madagascar. It is a very secretive species and probably occurs at many more localities than records indicate. The northernmost locality (Sambava) has not been confirmed since its original description. Most records are concentrated in east-central Madagascar from Antsihanaka south to Fierenana, with isolated records further south at Vondrozo and Soavala. Its recorded altitudinal range is 150-900m asl.
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Distribution and Habitat

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This species occurs widely along the eastern rainforest belt of Madagascar. It is a very secretive species and probably occurs at many more localities than records indicate (Nussbaum et. al 2008). Located at Ambatovaky, Andekaleka, Ankay, Antsihanaka, Fierenana, Sambava, Soavala, Vevembe (Glaw and Vences 2007) from 150 to 900 m asl (Nussbaum et. al 2008).
  • Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, Köln.
  • Nussbaum, R., Vences, M., and Cadle, J. (2008). Dyscophus guineti. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 08 April 2009.
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Ecology

Habitat

Habitat and Ecology

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Habitat and Ecology
It is usually found in primary rainforest and swamp forests, and in clearings and poorly drained places adjacent to or within forest. It is not found in severely degraded habitats. It breeds in temporary and permanent pools.

Systems
  • Terrestrial
  • Freshwater
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Conservation

Conservation Status

IUCN Red List Assessment

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Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2004

Assessor/s
Ronald Nussbaum, Miguel Vences, John Cadle

Reviewer/s
Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)

Justification
Listed as Least Concern in view of its wide distribution, tolerance of a degree of habitat modification, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.
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Population

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Population
It varies in abundance from extremely common to very rare.

Population Trend
Unknown
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Life History, Abundance, Activity, and Special Behaviors

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Habits: Reliably only known from primary forest, usually in areas that are relatively flat and where streams are slow-moving, forming large almost stagnant parts and side-ponds. At these sites specimens can be very common and easy to find, especially at night when they move on the forest floor. Many hundreds of sticky eggs are deposited in these ponds (Glaw and Vences 2007).

Calls: Similar to that of D. antongilii (Glaw and Vences 2007).

  • Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, Köln.
  • Nussbaum, R., Vences, M., and Cadle, J. (2008). Dyscophus guineti. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 08 April 2009.
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Threats

Threats

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Major Threats
Its forest habitat is receding due to subsistence agriculture, timber extraction, charcoal manufacture, and invasive spread of eucalyptus, livestock grazing and expanding human settlements. It is exploited commercially, but probably not at a level that seriously impacts populations. This exploitation results largely from the placement of its sister species, Dyscophus antongili (the Tomato Frog), on Appendix I of CITES.
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Life History, Abundance, Activity, and Special Behaviors

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This species is listed as least concern because of its wide distribution, tolerance of a degree of habitat modification, presumed large population, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

It is not known from any protected areas and its forest habitat is receding due to subsistence agriculture, timber extraction, charcoal manufacture, and invasive spread of eucalyptus, livestock grazing and expanding human settlements. It is exploited commercially, but probably not at a level that seriously impacts populations. This exploitation results largely from the placement of its sister species, Dyscophus antongili (the Tomato Frog), on Appendix I of CITES. The trade in this species should be regulated through a quota (Nussbaum et. al 2008).

  • Glaw, F., and Vences, M. (2007). Field Guide to the Amphibians and Reptiles of Madagascar. Third Edition. Vences and Glaw Verlag, Köln.
  • Nussbaum, R., Vences, M., and Cadle, J. (2008). Dyscophus guineti. In: IUCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 08 April 2009.
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Management

Conservation Actions

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Conservation Actions
It is not known from any protected areas. The species is not listed in the CITES Appendices. Trade in wild animals should be sustainably regulated through a quota system. Mattioli et al. (2006) undertook a study into the economics of captive-breeding this high-demand species, concluding that it is well suited to intensive commercial captive breeding programmes. Mattioli et al. (2006) determined that the market demand for this species could easily be met through captive-breeding only.
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Wikipedia

Dyscophus guineti

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The False Tomato Frog, Dyscophus guineti, is a species of frog in the Microhylidae family. It is endemic to Madagascar. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, swamps, freshwater marshes, intermittent freshwater marches, and heavily degraded former forest. It is threatened by habitat loss.

It is kept as a pet.

Dyscohpus guineti

References

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