Lithobates omiltemanus

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	AMPHIBIA	ANURA	RANIDAE

Scientific Name:

Lithobates omiltemanus

Species Authority:

(Günther, 1900)

Common Name/s:

English	–	Guerreran Leopard Frog
Spanish	–	Rana Guerrerense

Synonym/s:

Lithobates omiltemana Günther, 1900

Rana omiltemana Günther, 1900

Assessment Information [top]

Red List Category & Criteria:	Critically Endangered B2ab(iii,v) ver 3.1
Year Published:	2004
Assessor/s:	Georgina Santos-Barrera, Oscar Flores-Villela
Reviewer/s:	Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Justification: Listed as Critically Endangered because its Area of Occupancy is less than 10km2, its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its habitat, and in the number of locations and the number of mature individuals.

Geographic Range [top]

Range Description:	This species is known from only two locations in Mexico: Omiltemi State Park, in the Sierra Madre del Sur, in Guerrero; and Agua del Obispo, in north-western Guerrero. It is a montane species and the type locality is at about 2,400m asl.
Countries:	Possibly extinct: Mexico
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	This species has not been recorded since 1978, and it is feared that the species might now be extinct. It seems to be extirpated in the Omiltemi State Park, since a recent one-year survey of this site yielded no individuals; there is no recent information on its status at Agua del Obispo.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It occurs in montane forest and requires the presence of slow or moderate streams for breeding.
Systems:	Terrestrial; Freshwater

Threats [top]

Major Threat(s):	Although generally affected by habitat loss, the most likely cause of the extinction of the population in the Omiltemi State Park is the piping of water from streams within the species' range to provide the city of Chilpancingo with water. However, it might also have disappeared due to chytridiomycosis, since other montane stream-breeding amphibians have also disappeared from suitable habitats without any apparent reason.

Major Threat(s):

Although generally affected by habitat loss, the most likely cause of the extinction of the population in the Omiltemi State Park is the piping of water from streams within the species' range to provide the city of Chilpancingo with water. However, it might also have disappeared due to chytridiomycosis, since other montane stream-breeding amphibians have also disappeared from suitable habitats without any apparent reason.

Conservation Actions [top]

Conservation Actions:	A survey of the Omiltemi State Park is recommended in order to confirm whether or not the species has indeed disappeared from this area. Another survey of Agua del Obispo is required to check the population status in this locality. If the species still persists in Agua del Obispo, a recovery programme might be needed and perhaps from here individuals could be taken and reintroduced to the Omiltemi area. Protection of the remaining habitat at Agua del Obispo is needed. This species is listed as "Endangered" by the Mexican government.

Conservation Actions:

A survey of the Omiltemi State Park is recommended in order to confirm whether or not the species has indeed disappeared from this area. Another survey of Agua del Obispo is required to check the population status in this locality. If the species still persists in Agua del Obispo, a recovery programme might be needed and perhaps from here individuals could be taken and reintroduced to the Omiltemi area. Protection of the remaining habitat at Agua del Obispo is needed. This species is listed as "Endangered" by the Mexican government.

Citation:	Georgina Santos-Barrera, Oscar Flores-Villela 2004. Lithobates omiltemanus. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 25 May 2012.
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