Overview

Comprehensive Description

Description

A medium-sized to rather large, brown brook-dwelling frog, 63-68 mm. Back more or less uniformly light brown to greyish; a light median band can be present. Hindlimbs more or less with dark bands.
Dorsal skin more or less smooth. Nostrils equidistant to tip of snout and to eye. Tympanum distinct, about 2/3 of eye diameter in females, 4/5 of eye diameter in males. Tibiotarsal articulation reaches at least the eye. Lateral metatarsalia separated. Hands without webbing; webbing of the foot 1(0), 2i(1), 2e(0), 3i(1), 3e(0), 4i(1.5-1), 4e(1), 5(0). Femoral glands circular in males, reduced in females. [97]

Similar species: All other species of Brygoomantis are smaller. See also similar species of M. ulcerosus.

A member of the subgenus Brygoomantis, a group composed of small to rather large, mainly brook-dwelling frogs, 20-68 mm.
Characteristics: Lateral metatarsalia separated. Tips of fingers and toes slightly enlarged. Tibiotarsal articulation does not reach beyond tip of snout. Hands without webbing, feet webbed. Vomerine teeth are present, except in M. madecassus. Tympanum is large, more than 1/2 of eye diameter; larger in males than females.
Femoral glands more or less circular, present in males, rudimentary in females. Males with a very slightly distensible, single subgular vocal sac. Calls are not very intense. Males call from the ground near water. Eggs deposited on moist sites on the ground, close to water. Tadpoles not very specialized; tooth formula is 1/2+2//3-1/4+4//3. [97]
Species determination within this group is very difficult. The distribution data, especially those of M. ulcerosus and M. betsileanus, appear only very loosely linked to the biogeographic zonation which can be found in most Malagasy frog groups. Furthermore, evidence exists that calls differ between specimens from different localities, which can not be distinguished morphologically (see table). This indicates that the taxonomy of this group is not sufficiently clarified. Since our data do not allow a substantial contribution to such a clarification, we do not undertake any taxonomic discussion here and follow Blommers-Schlösser & Blanc (1991).
This subgenus contains: M. ulcerosus, M. betsileanus, M. curtus, M. biporus, M. alutus, M. ambohimitombi, M. madecassus.

For references in the text, see here

  • Glaw, F. and Vences, M. (1994). Amphibians and Reptiles of Madagascar. M. Vences and F. Glaw Verlags GbR., Köln.
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Distribution

Range Description

This species is known only from Ambohimitombo and possibly very nearby at Antoetra, in east-central Madagascar, at 1,100m asl.
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Distribution and Habitat

TT Foret d'Ambohimitombo; Ankazobe [97]; Ankaratra mountains [97]. Only known from higher altitudes.

  • Glaw, F. and Vences, M. (1994). Amphibians and Reptiles of Madagascar. M. Vences and F. Glaw Verlags GbR., Köln.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
A recent specimen provisionally attributed to this species from Antoetra was recorded near a stream in montane grassland near a forest.

Systems
  • Terrestrial
  • Freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2004

Assessor/s
Franco Andreone, Miguel Vences

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

Contributor/s

Justification
Listed as Data Deficient in view of continuing uncertainties as to its extent of occurrence, status and ecological requirements.
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Population

Population
The population status of this species is unknown.

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

Habits: One specimen was found on the bank of a clear brook, with stones on the bottom, in forest. In captivity the male called during day and evening, often sitting in water. [88]
Call: Similar to the call of other species in the group. No recordings were made. [88]
Eggs and tadpoles: Unknown.

  • Glaw, F. and Vences, M. (1994). Amphibians and Reptiles of Madagascar. M. Vences and F. Glaw Verlags GbR., Köln.
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Threats

Major Threats
There is no direct information on its threats. However, it is likely that its habitat is at least under pressure from fires and livestock grazing, and pollution and siltation of streams.
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Management

Conservation Actions

Conservation Actions
It is not known from any protected areas.
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Wikipedia

Mantidactylus ambohimitombi

Mantidactylus ambohimitombi is a species of frog in the Mantellidae family. It is endemic to Madagascar. Its natural habitats are subtropical or tropical moist montane forests, subtropical or tropical high-altitude grassland, and rivers. It is threatened by habitat loss.

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