Isthmohyla tica

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	HYLIDAE

Scientific Name:	Isthmohyla tica
Species Authority:	(Starrett, 1966)
Taxonomic Notes:	This species was previously included in the genus Hyla but has recently been moved to the new genus Isthmohyla (Faivovich et al. 2005).

Assessment Information [top]

Red List Category & Criteria:	Critically Endangered A2ace ver 3.1
Year Published:	2004
Assessor/s:	Frank Solís, Roberto Ibáñez, Alan Pounds, Federico Bolaños, Gerardo Chaves, Jay Savage, César Jaramillo, Querube Fuenmayor
Reviewer/s:	Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson, Neil Cox and Bruce Young)
Contributor/s:
Justification: Listed as Critically Endangered because of a drastic population decline, estimated to be more than 80% over the last ten years, inferred from the apparent disappearance of most, or all, of the population, perhaps due to chytridiomycosis.

Geographic Range [top]

Range Description:	This species occurs in the lowest portion of the humid lower montane zone in the Cordillera de Tilarán, Cordillera Central, and Cordillera de Talamanca of Costa Rica and western Panama, from 1,100-1,650m asl (Savage 2002).
Countries:	Possibly extinct: Costa Rica; Panama
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	In Costa Rica, it has disappeared from Monteverde, Tapantí, and Las Tablas where it once was common. As of August, 2007, even though some survey effort has taken place in the range there have been no recent records from Costa Rica (Federico Bolaños pers. comm.). In Panama, there were records from the Cerro Horqueta highlands of Chiriquí in 1982. It used to be seen regularly at the Reserva Forestal Fortuna, Chiriquí (Panama), but its population collapsed in January 1997, and it has not been seen there since. This is possibly the last record from Panama, and it seems that it might have disappeared from this country as well.
Population Trend:	Decreasing

Population:

In Costa Rica, it has disappeared from Monteverde, Tapantí, and Las Tablas where it once was common. As of August, 2007, even though some survey effort has taken place in the range there have been no recent records from Costa Rica (Federico Bolaños pers. comm.). In Panama, there were records from the Cerro Horqueta highlands of Chiriquí in 1982. It used to be seen regularly at the Reserva Forestal Fortuna, Chiriquí (Panama), but its population collapsed in January 1997, and it has not been seen there since. This is possibly the last record from Panama, and it seems that it might have disappeared from this country as well.

Population Trend:

Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It is a nocturnal tree frog occurring in humid premontane and lower montane rainforest areas. Males usually call from vegetation overhanging the fastest-flowing stretches of streams, 1-3m above the water. Amplexus and oviposition are unknown for this species. Eggs are deposited under rocks in streams, and the tadpoles attach themselves to rocks by means of the large oral funnel (Savage 2002).
Systems:	Terrestrial; Freshwater

Threats [top]

Major Threat(s):	The observed population decline has taken place in pristine habitats, and might be due to chytridiomycosis, and perhaps also the effects of climate change. It is generally also affected by habitat loss as a result of logging.

Major Threat(s):

The observed population decline has taken place in pristine habitats, and might be due to chytridiomycosis, and perhaps also the effects of climate change. It is generally also affected by habitat loss as a result of logging.

Conservation Actions [top]

Conservation Actions:	This species has been recorded from a number of protected areas in Costa Rica. Further research is urgently needed into the ecology and population status of this frog; in view of the possible threat of chytridiomycosis, ex-situ populations might need to be established.

Conservation Actions:

This species has been recorded from a number of protected areas in Costa Rica. Further research is urgently needed into the ecology and population status of this frog; in view of the possible threat of chytridiomycosis, ex-situ populations might need to be established.

Citation:	Frank Solís, Roberto Ibáñez, Alan Pounds, Federico Bolaños, Gerardo Chaves, Jay Savage, César Jaramillo, Querube Fuenmayor 2004. Isthmohyla tica. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 22 May 2013.
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