Overview

Comprehensive Description

Description

Pyxicephalus obbianus is a large ranid frog very similar to Pyxicephalus adspersus. P. obbianus adult specimens (larger than 90 mm) can be distinguished from P. adspersus by the size and placement of the tympanum. In P. obbianus, the tympanum is larger than the eye and lies very close to it. In P. adspersus, on the other hand, the tympanum is smaller than the eye and is separated from it by a distance larger than the tympanum itself.

P. obbianus adult specimens also generally seem to lack the vertebral light stripe found on most P. adspersus. According to Balletto et al. (1978), all the specimens of Pyxicephalus obbianus they examined that were larger then 23 mm (snout-urostyle) lacked the vertebral light stripe that was present in all of the specimens of Pyxicephalus adspersus that they examined but one. However, this cannot be used as a definite means of identification.

  • Balletto, E., Cherchi, M. A., and Lanza, B. (1978). ''On some amphibians collected by the late Prof. Guiseppe Scortecci in Somalia.'' Monitore Zoologico Italiano Supplemento, 11(9), 221-243.
  • Lanza, B (1981). ''A check-list of the Somali amphibians.'' Monitore Zoologico Italiano Supplemento, 15(10), 151-186.
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Distribution

Range Description

This species is endemic to Somalia, ranging from Galguduud Province in the south, north to Bari Province. Most records are from Mudug Province in the vicinity of Hobyo (Obbia), and between Hobyo and Gaalkacyo (Galcaio).
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Distribution and Habitat

Pyxicephalus obbianus ranges from central to northern Somalia about 100km NW of Obbia, along the track Obbia-Galcaio, about 06°N-48°E; Obbia; El Bur; Gardo; Las Aer; about 70 km SE of Galcaio, along the track Obbia-Galcaio, about 06°20’N-47°50’E. It inhabits savannahs and other semi-arid habitats within its range.

  • Balletto, E., Cherchi, M. A., and Lanza, B. (1978). ''On some amphibians collected by the late Prof. Guiseppe Scortecci in Somalia.'' Monitore Zoologico Italiano Supplemento, 11(9), 221-243.
  • Lanza, B (1981). ''A check-list of the Somali amphibians.'' Monitore Zoologico Italiano Supplemento, 15(10), 151-186.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Its habitat preferences when it is not breeding are not well known, though it presumably a species of dry savannahs and semi-arid habitats, living fossorially outside the breeding season. It breeds in temporary pools.

Systems
  • Terrestrial
  • Freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2013

Assessor/s
IUCN SSC Amphibian Specialist Group

Reviewer/s
Stuart, S.N.

Contributor/s
Nistri, A., Lanza, B. & Balletto, E.

Justification
Listed as Least Concern in view of its relatively wide distribution, its tolerance of a broad range of habitats and its presumed large population.

History
  • 2004
    Least Concern
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Population

Population
It is an uncommon species.

Population Trend
Unknown
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Threats

Major Threats
There is little information. It might be impacted by livestock grazing, and perhaps fire and droughts, but otherwise it does not appear to be significantly threatened at the moment.
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Management

Conservation Actions

Conservation Actions
It does not occur in any protected areas.
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Wikipedia

Calabresi's bullfrog

Calabresi's bullfrog (Pyxicephalus obbianus) is a species of frog in the Ranidae family. It is endemic to Somalia.

Its natural habitats are dry savanna, subtropical or tropical dry shrubland, subtropical or tropical dry lowland grassland, and intermittent freshwater marshes. It is threatened by habitat loss.

References

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