Pseudoeurycea smithi (Taylor 1939)

Pseudoeurycea smithi és una espècie d'amfibi urodel (salamandres) de la família Plethodontidae. És endèmica de Mèxic.

El seu hàbitat natural són els montans humits. Està amenaçada d'extinció a causa de la destrucció del seu hàbitat.

Pseudoeurycea smithi, commonly known as Smith's false brook salamander, is a species of salamander in the family Plethodontidae. It is endemic to certain mountainous regions of Mexico. Its natural habitat is subtropical or tropical moist montane forests. It is threatened by habitat loss.

Description

Smith's false brook salamander is a large species that can grow to 14.6 centimetres (5.7 in), half of which is tail. It has a wide head and large paratoid glands behind the eyes. There are twelve to fifteen costal grooves on either side of the body and the tail is prehensile and has a constriction at its base. The limbs are slender and the fingers and toes completely or partially webbed. The back is dark brown, the sides olive brown with black bars and the belly pale. The chin is cream coloured with brown speckles and the sides of the tail have black spots.^[2][3]

Distribution and habitat

Pseudoeurycea smithi occurs in several mountain ranges in north west Oaxaca State, Mexico, at an altitude of between 2,500 and 3,000 metres (8,200 and 9,800 ft) above sea level.^[4] Its natural habitat is pine forests and it is often found hidden under loose bark on fallen logs. In the past it has demonstrated that it can adapt to living in secondary forest after destruction of the virgin forest.^[1]

Biology

Smith's false brook salamander is a terrestrial species. Little is known of the breeding habits of this species but the female is believed to brood the eggs and they hatch directly into juvenile salamanders with no intervening larval stage.^[2]

Status

The IUCN Red List of Threatened Species lists this species as "Critically Endangered".^[4] At one time it was very common within its range but had declined in numbers by more than eighty percent by 2004. Although logging, changing agricultural practices and human activities have taken place in the mountains where it lives, good quality habitat still exists and these factors do not fully explain the decline in population size, the cause of which remains a mystery.^[4] Some of the range is within the bounds of the Parque Nacional Benito Juarez which makes conservation easier. Research is needed to discover the causes of the population collapse.^[4]

References

El tlaconete oaxaqueño Pseudoeurycea smithi es una especie de anfibio caudado (salamandras) de la familia Plethodontidae. Es una especie endémica de México, restringida a la Sierra Juárez, Cerro de San Felipe y Sierra Cuatro Venados en Oaxaca.

Clasificación y descripción de la especie

Es una salamandra de la familia Plethodontidae del orden Caudata. Es de talla grande, alcanza una longitud de 6.9 cm. Sus extremidades son cortas. Su cola es más larga que la longitud del cuerpo, y tiene una constricción en la base. La coloración del cuerpo es café, con una serie de barras oscuras transversales en cada surco costal que se extienden a los lados del vientre y manchas oscuras distribuidas irregularmente en la cola

Distribución de la especie

Es endémica de México, se conoce solo para Oaxaca en Sierra de Juárez, Cerro San Felipe y Sierra Cuatro Venados.^[1]​

Ambiente terrestre

Vive en bosques de pino y pino-encino entre 2,500 y 3,000 m.s.n.m. Su hábitat natural son los montanos húmedos.

Estado de conservación

Se considera como Amenazada (Norma Oficial Mexicana 059) y en Peligro Crítico en la Lista Roja de la UICN. Está amenazada de extinción debido a la destrucción de su hábitat.

Referencias

1 Parra Olea, G. & Wake, D. 2004. Pseudoeurycea smithi. 2006 IUCN Red List of Threatened Species. Consultado el 23 de julio de 2007.

Pseudoeurycea smithi Pseudoeurycea generoko animalia da. Anfibioen barruko Plethodontidae familian sailkatuta dago, Caudata ordenan.

Erreferentziak

Ikus, gainera

• Plethodontidae

Pseudoeurycea smithi est une espèce d'urodèles de la famille des Plethodontidae^[1].

Répartition

Cette espèce est endémique de l'État d'Oaxaca au Mexique. Elle se rencontre de 2 500 à 3 000 m d'altitude dans la Sierra Juárez et la Sierra de Cuatro Venados^[1].

Étymologie

Cette espèce est nommée en l'honneur d'Hobart Muir Smith^[2].

Publication originale

• Taylor, 1939 "1938" : Concerning Mexican salamanders. University of Kansas Science Bulletin, vol. 25, n^o 14, p. 259-313 (texte intégral).

Notes et références

Pseudoeurycea smithi é uma espécie de salamandra da família Plethodontidae.

É endémica do México.

Os seus habitats naturais são: regiões subtropicais ou tropicais húmidas de alta altitude.

Está ameaçada por perda de habitat.

Referências

• (em inglês) Parra Olea, G. & Wake, D. 2004. Pseudoeurycea smithi. 2006 IUCN Red List of Threatened Species. Dados de 23 de Julho de 2007.

Pseudoeurycea smithi là một loài kỳ giông trong họ Plethodontidae. Nó là loài đặc hữu của México.

Môi trường sống tự nhiên của chúng là các khu rừng vùng núi ẩm nhiệt đới hoặc cận nhiệt đới. Nó bị đe dọa do mất môi trường sống.

Nguồn

• Parra Olea, G. & Wake, D. 2004. Pseudoeurycea smithi. 2006 IUCN Red List of Threatened Species. Truy cập 23 tháng 7 năm 2007.

Tham khảo

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