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Overview

Distribution

Range Description

This species is known only from the type locality, San Martin, in north-western State of Mexico, at 2,500m asl.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This is a metamorphosing species spending most of its time on land in a mosaic of natural grasslands and pine-oak forests, living in somewhat more open habitats than Ambystoma amblycephalum. It requires ponds and small streams in which to breed.

Systems
  • Terrestrial
  • Freshwater
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Trophic Strategy

The delicate-skinned salamander is thought to feed on small invertebrates that it hunts for under rotting wood. (1)

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Life History and Behavior

Reproduction

Reproduction occurs in ponds, small lakes, and slow-moving streams. It is assumed that the delicate-skinned salamander breeds during the onset of summer rains, though this information is not certain. (1) Once the eggs have been laid, they are left alone to develop, with no further involvement from either parent. (2)

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
CR
Critically Endangered

Red List Criteria
B1ab(iii)+2ab(iii)

Version
3.1

Year Assessed
2004

Assessor/s
Brad Shaffer, Oscar Flores-Villela, Gabriela Parra-Olea, David Wake

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

Contributor/s

Justification
Listed as Critically Endangered because its Extent of Occurrence is less than 100 km2 and its Area Of Occupancy is less than 10km2, all individuals are in a single sub-population, and there is continuing decline in the extent and quality of its habitat around San Martin.
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Population

Population
There is no information on the population status of this species.

Population Trend
Decreasing
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Threats

Major Threats
The habitat of this species is under threat from agriculture, in particular from commercial wheat farming, leading to the desiccation and pollution of its breeding lakes and water reservoirs within its small range. However, survival of this species appears to be compatible with cattle grazing, particularly if stock ponds are available for breeding. Introduced predatory fish also pose a serious threat to this species.
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The delicate-skinned salamander is threatened by the dangers that agriculture poses to its habitat, such as commercial wheat farming. Human impact further threatens the population by desiccating and polluting the lakes and water reservoirs in which the salamanders breed. A serious threat also comes from predatory fish. “However, survival of this species appears to be compatible with cattle grazing, particularly if stock ponds are available for breeding.” (1)

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Management

Conservation Actions

Conservation Actions
It does not occur in any protected areas, making the conservation and restoration of the natural habitats for this species urgent. It might be possible to breed this species in captivity, in which case captive animals could be a source of new individuals to repopulate natural habitats. It is protected under the category Pr (Special protection) by the Government of Mexico.
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Wikipedia

Delicate-skinned salamander

The Delicate-Skinned Salamander (Ambystoma bombypellum) is an extremely rare neotenic Mole salamander species.

Description

The Delicate-Skinned Salamander was first described by herpetologist Edward Harrison Taylor from a holotype found in 1939 near Rancho Guadalupe, 14 km. east of San Martín in the north-western Asunción province in Mexico.[1] It is until today the only habitat for this species. Introduced predatory fish and habitat destruction due to agriculture lead to a desiccation of the breeding ponds and to a severely decline of the population. It is a small terrestrial species of about 14.2 cm, with a brown dorsal coloration and a lighter underbelly. The head is flattened. Fingers and toes are unwebbed.

References

  1. ^ Amphibian Species of the World - Ambystoma bombypellum


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