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Morphology

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Namibian geckos have translucent skin, mostly a somber brown or gray color which helps them blend in with their desert environment. They have thin, spindly legs and large webbed feet, which help them dig burrows in the coastal Namib Desert. Their webbed feet also allow them to run across the fine sand in their native habitat. These webs are fleshy, but they contain tiny cartilages that support a delicate system of muscles that coordinate the fine sand-scooping motions of the feet. Additionally, the adhesive pads on their toes have rows of plates called lamellae, which are covered with thousands of microscopic hook like projections called villosities. These villosities catch any minor surface irregularity in order to aid the gecko in climbing.

Pachydactylus rangei possess large, bulb-like eyes with vertical pupils. Their eyes are are dark brown and red, and they stand out against the pinkish-brown color of the head and back of the species. Like most geckos, they lack eyelids. Instead, the eyes are covered with a transparent scale, called a spectacle, which is cleaned by periodic licking.

This species does not show marked sexual dimorphism. Although males are generally smaller, the differences between males and females are so small that they can only be determined by examining a large number of specimens. These lizards usually range in size from 10-15 cm long, and individuals have a lifespan of 1-5 years.

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Cutler, M. 1999. "Pachydactylus rangei" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Pachydactylus_rangei.html
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Habitat

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As they are nocturnal, these geckos live mostly nestled in deep burrows in the desert sand where there is a moderate amount of moisture during the day. They venture out to the surface only when the desert's temperature has dropped at night.

Terrestrial Biomes: desert or dune

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Distribution

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Pachydactylus rangei is found in Africa south of the Sahara Desert, mainly in Namibia.

Biogeographic Regions: ethiopian (Native )

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Trophic Strategy

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Palmatogecko is a nocturnal, insectivorous animal. They are known as inefficient hunters because their prey (such as grasshoppers, small spiders, and any arthropod small enough for them to digest) can easily avoid them. However, by hunting at night, they are able to take advantage of the lack of competition from other lizards during the hours when insects and spiders are off their guard. Their large eyes and vertical pupils help the lizards see well at night.

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Benefits

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Important in the pet trade.

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Cutler, M. 1999. "Pachydactylus rangei" (On-line), Animal Diversity Web. Accessed April 27, 2013 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Pachydactylus_rangei.html
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Conservation Status

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Human activities threaten the geckos' survival. People hunt them for food, and in many areas, their habitats have been destroyed. Some laws have been passed that help to protect the lizards.

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Untitled

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Pachydactylus rangei has complex vocalizations, ranging from squeaks and clicks to croaks and barks. These forms of communication are utilized when the lizard is disturbed or if it is trying to attract a mate.

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Reproduction

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The breeding season for the Namib web-footed gecko begins in the spring (April/May). The male geckos bites the female's neck and subsequently holds her tightly while maneuvering his tail under hers to complete copulation. Females lay eggs in pairs, although young females who have never laid eggs before may lay only one egg. The eggs are buried in a moist substrate around 30 degrees Celsius. Eggs are calcareous, around 8-11 by 7-9 mm in size, and may be either stuck together or separate. The young are hatched in about eight weeks. Depending on when the female lays the eggs (usually between May and August), the young emerge between July and October.

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Distribution

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Continent: Africa
Distribution: Republic of South Africa, S Angola, Namibia (Lüderitz-Bucht)
Type locality: Lüderitz-Bucht, Southwest Africa.
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Jeko Namibia ( Breton )

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Jeko Namibia (Pachydactylus rangei, bet Palmatogecko rangei) a zo ur stlejvil a-orin eus su Afrika.

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Namibgecko ( German )

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Der Namibgecko (Pachydactylus rangei, Syn.: Palmatogecko rangei), auch Schwimmfußgecko genannt, kommt ausschließlich in der Namib, d. h. in Teilen Angolas, Namibias und Südafrikas, von der Küste des südlichen Atlantik bis etwa 130 km landeinwärts vor. Er lebt auf bis zu 300 Meter hohen Sanddünen und gehört zu den sogenannten Little Five („kleinen Fünf“; vgl. Big Five).[1]

Merkmale

Es sind kleine Tiere, die nur 12 bis 14 cm Gesamtlänge erreichen. Der Schwanz wird 6 cm lang. Kopf und Rumpf sind flach, der Kopf deutlich vom Rumpf abgesetzt. Die Haut hat feine Schuppen, wirkt samtig und durchscheinend. Einige innere Organe sind sichtbar. Namibgeckos haben einen hell bis rötlich braunen Rücken. Bauch und Flanken unterhalb der Seitenfalte sind weiß bis gelblich. Die Beine sind dünn und wirken zerbrechlich. Die Zehenzwischenräume sind mit einer „Schwimmhaut“ ausgestattet, die bis zu den Zehenspitzen reicht. Sie ermöglicht es den Geckos durch lockeren Sand zu laufen ohne einzusinken. Bei den Männchen ist die Schwanzwurzel verdickt.

Lebensweise

Die Tiere sind ausschließlich nachtaktiv. Den Tag verbringen sie in selbst gegrabenen Gängen, die unverzweigt und 80 bis 100 cm tief sind. Ihre bevorzugte Beute sind Gliedertiere aller Art, von Termiten über Schwarzkäfer bis hin zu Grillen und Spinnen. Sie lecken Tautropfen auf und nehmen Feuchtigkeit eventuell auch über die Haut auf.

Die Paarungszeit dauert von Februar bis Ende April. Die Eier werden vom Weibchen in den Sand vergraben. Die Junggeckos schlüpfen nach 54 bis 70 Tagen und sind dann etwa 4 cm lang. Sie häuten sich sofort und beginnen nach 4 Tagen zu fressen.

Literatur

  • Manfred Rogner: Echsen. Band 1: Geckos, Flossenfüsse, Agamen, Chamäleons und Leguane. Ulmer, Stuttgart 1992, ISBN 3-8001-7248-8.
  • Sebastian Schenk, Sebastian Wolf: Zur Haltung und Nachzucht des Palmatogeckos, Pachydactylus rangei Anderson, 1908. In: Terraria. Bd. 3, Nr. 1 = Nr. 13, 2008, , S. 60–65.
  • Steven Arth, Sandra Baus: Palmatogecko. Pachydactylus rangei. Natur-und-Tier-Verlag, Münster 2012, ISBN 978-3-86659-172-1.

Einzelnachweise

  1. The little five in a land of sand. Africa Geographic, 8. Dezember 2015.
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Namibgecko: Brief Summary ( German )

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Der Namibgecko (Pachydactylus rangei, Syn.: Palmatogecko rangei), auch Schwimmfußgecko genannt, kommt ausschließlich in der Namib, d. h. in Teilen Angolas, Namibias und Südafrikas, von der Küste des südlichen Atlantik bis etwa 130 km landeinwärts vor. Er lebt auf bis zu 300 Meter hohen Sanddünen und gehört zu den sogenannten Little Five („kleinen Fünf“; vgl. Big Five).

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Pachydactylus rangei

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Pachydactylus rangei, the Namib sand gecko[4] or Namib web-footed gecko, is a species of small lizard in the family Gekkonidae. It inhabits the arid areas of Angola, Namibia, and South Africa, and was first described in 1908 by Swedish zoologist Lars Gabriel Andersson,[3] who named it after its finder, German geologist Dr. Paul Range.[5][6]

Description

Pachydactylus rangei grows to a length of about 13 cm (5 in) including a 6-centimetre (2.4 in) tail. The head is quite distinct from the slender body and both are flattened dorsally. The eyes are large, dark-coloured and protuberant and have vertical pupils. The web-footed gecko is very pale, nearly translucent. It has a salmon-colored undertone and some have light brown stripes or patterns. The coloring of their skin allows for very good camouflage among the sand of the Namib Desert.[7] The skin is covered in fine, smooth scales and is translucent, and some of the internal organs can be seen through it. The legs are thin but the feet are broad, with fully webbed toes, enabling this gecko to burrow easily and to run on loose sand. The gecko developed the webbed feet as an adaptation to help them stay on top of the Namib Desert sand or bury underneath the sand.[7] They have developed this adaptation due to being nocturnal and needing to spend the days in burrows which are self dug and then spend the night on top of the sand feeding. Their feet also have adhesive pads on the bottom to help them climb.[7] The males have thicker tails than the females. The female's mass can reach around 10 grams and the male is about 6 grams.[8] The head and dorsal surface are pinkish-brown with darker markings, particularly in two intermittent lateral lines, and the ventral surface is off-white. There is often a bluish band between the eyes. This species is rather similar in appearance to Ptenopus garrulus, another species of gecko found within its range.[5][9]

Distribution and habitat

Pachydactylus rangei is endemic to the Namibia Desert where it is found near the coast and up to 130 kilometres (80 miles) inland at altitudes of up to 300 metres (1,000 feet). The Namibia Desert is located in the Southern part of Africa.[10] The type locality is Lüderitz in Namibia. Its habitat is among rocks and stunted vegetation and on the dry loose sand of sand dunes.[9] The geckos prefer the sandy desert regions and are only found on the coastal part of Namibia and the Richtersveld in the extreme north of Namaqualand in the Cape.[11]

Food

In the wild the geckos eat crickets, grasshoppers and small spiders.[7] They also will eat beetles, and other small insects they can find among the sand.[11] In captivity they will eat crickets and worms. It is suggested to feed them crickets in captivity to keep the geckos active.[12] The gecko's large eyes allows it to see its prey while hunting at night.[7]

Adaptations

The web-footed gecko has developed many adaptations for living in the harsh desert climate. It has webbed feet, which allow it to burrow in the sand or walk on top of the sand.[7] It also has adhesive pads on the bottom of its feet which allow it to be an extremely good climber.[7] "The adhesive pads on their toes have rows of plates called lamellae, which are covered with thousands of microscopic hook like projections called villosities. These villosities catch any minor surface irregularity in order to aid the gecko in climbing."[13]

Another adaptation that the web-foot gecko has developed is its eyes. The gecko has oversize eyes which help it to detect prey.[7] "The geckos like most other geckos do not have eyelids, instead their eyes are covered with a transparent scale, called a spectacle. They clean their eyes by periodic licking."[13]

Biology

Pachydactylus rangei is nocturnal, spending the day in a burrow up to a metre (yard) deep.[9] It emerges at night to feed on arthropods such as termites, ants, beetles, grasshoppers and spiders.[9] Its main source of water is the drops of dew found on vegetation. It can also absorb moisture through its skin.[9] They communicate using a wide range of vocalizations, including squeaks, clicks and even croaks.[7]

Each individual normally lives a solitary life. It may emit certain squeaks and grunts when disturbed or when trying to find a mate. Reproduction takes place in April and May. During copulation, the male grasps the female tightly while gripping her neck with his teeth and bends his tail round under hers. The female lays one or two oval, hard-shelled eggs and buries them in moist sand where they need to incubate at a temperature of about 30 °C (86 °F). The young geckos hatch out after about eight weeks and are already 10 cm (4 in) long. They start eating after about four days.[9]

Conservation status and threats

The main threats to the geckos are human activities. People hunt them for food and destroy their habitats.[10] The gecko is considered important for human economics because it is used in the pet trade.[9] Some people keep these geckos in glass terrariums as pets even though they move very fast and do not like to be held.[12] The geckos mouths are also too small to be able to bite humans.[12] They can live up to five years in the wild.[7] Some laws have been passed to help the geckos, but they are not on any protected species lists, they are considered to be a non vulnerable population.[10]

References

  1. ^ Baptista, N., Bauer, A.M., Becker, F., Conradie, W. & Ceríaco, L.M.P. 2020. Pachydactylus rangei. The IUCN Red List of Threatened Species 2020: e.T196947A120595584. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T196947A120595584.en. Downloaded on 29 August 2021.
  2. ^ Bauer, Aaron [in French]. "Pachydactylus rangei Andersson, 1908". ITIS Report. Retrieved 2012-12-09.
  3. ^ a b "Pachydactylus rangei Andersson, 1908". The Reptile Database. Retrieved 2012-12-09.
  4. ^ Not to be confused with Chondrodactylus angulifer
  5. ^ a b "Pachydactylus rangei Andersson, 1908". www.Pachydactylus.com. Archived from the original on 2014-09-07. Retrieved 2012-12-09.
  6. ^ Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Palmatogecko rangei, p. 217).
  7. ^ a b c d e f g h i j National Geographic Society. "Web-Footed Gecko". National Geographic.
  8. ^ "Ecology Care and Breeding of the Namib Web Footed Gecko - Gecko Time". Gecko Time. November 2011.
  9. ^ a b c d e f g Cutler, Melanie (1999). "Pachydactylus rangei ". Animal Diversity Web. Retrieved 2012-12-09.
  10. ^ a b c "Descriptions and articles about the Namibia Web-footed Gecko (Pachydactylus rangei ) - Encyclopedia of Life". Encyclopedia of Life.
  11. ^ a b "Web-Footed Gecko - Palmatogecko rangei ". ecotravel.co.za.
  12. ^ a b c "Namib Sand Gecko Care Guide". reptilesncritters.com.
  13. ^ a b "ADW: Pachydactylus rangei: INFORMATION". animaldiversity.org. Archived from the original on 2015-06-11.
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Pachydactylus rangei: Brief Summary

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Pachydactylus rangei, the Namib sand gecko or Namib web-footed gecko, is a species of small lizard in the family Gekkonidae. It inhabits the arid areas of Angola, Namibia, and South Africa, and was first described in 1908 by Swedish zoologist Lars Gabriel Andersson, who named it after its finder, German geologist Dr. Paul Range.

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Namiba geko ( Esperanto )

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La namiba geko (Pachydactylus rangei) ankaŭ dezerta geko, sabla geko aŭ naĝhaŭt-pieda geko vivas senescepte en dezerto Namibo, de la marbordo de la suda Atlantiko ĝis ĉ. 130 km landointernen. Ĝi vivas sur la sablodunoj, kiuj altiĝas eĉ ĝis 300 metroj.

Karakterizaĵoj

La namiba geko estas eta besto, kiu atingas la tutan longon de nur 12 ĝis 14 cm. La vosto longas 6 cm. La kapo kaj la trunko estas plata, la kapo videble dividiĝas de la trunko. La haŭto havas fajnajn skvamojn, ŝajnas velura kaj diafana. Eĉ kelkaj internaj organoj estas videblaj. La namiba geko havas helan ĝis ruĝete brunan dorson. La ventro kaj la flankoj sub la flankofaldo estas de blankaj ĝis flavetaj. La kruroj estas maldikaj kaj ŝajnas rompeblaj. La spaco inter la fingroj estas ekipita kun „naĝhaŭto“, kiu etendiĝas ĝis la fingropintoj. Tiuj ebligas la kuron sur la loza sablo kaj ne sinki en ĝin. Ĉe la virbestoj, la vostobazo dikiĝis.

Vivo

La bestoj aktivas nur nokte, tage ripozas en kavetoj, memfositaj ĝis profundo de 80 ĝis 100 cm. Ilia favoritaj predoj estas la segmentumitaj bestoj de ĉiuj specoj, de la termitoj tra nigraj skaraboj ĝis la veraj griloj kaj araneoj. Ili lekas rosogutojn kaj absorbas humidecon eĉ tra la haŭto.

La pariĝa tempo daŭras de februaro ĝis fino de aprilo. La ovojn la inbesto fos-kaŝas en la sablon. La junaj gekoj eloviĝas post 54 ĝis 70 tagoj kaj longas ĉ. 4 cm. Ili tuj ŝanĝas la haŭton kaj komencas nutri sin post 4 tagoj.

Literaturo

  • Schenk,S.,S.Wolf (2008): Zur Haltung und Nachzucht des Palmatogeckos, Pachydactylus rangei ANDERSSON,1908.TERRARIA 13:60-65
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Namiba geko: Brief Summary ( Esperanto )

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La namiba geko (Pachydactylus rangei) ankaŭ dezerta geko, sabla geko aŭ naĝhaŭt-pieda geko vivas senescepte en dezerto Namibo, de la marbordo de la suda Atlantiko ĝis ĉ. 130 km landointernen. Ĝi vivas sur la sablodunoj, kiuj altiĝas eĉ ĝis 300 metroj.

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Pachydactylus rangei ( Spanish; Castilian )

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El geco de arena de Namib (Pachydactylus rangei), también conocido como geco de la duna de arena de Namib o geco de patas palmeadas de Namib, es una especie de lagarto escamoso gecónido del género Pachydactylus de tamaño pequeño. Habita en las zonas áridas de Angola, Namibia y Sudáfrica.[2][3][4][5][6]​ Fue descrito por primera vez en por el zoólogo sueco Lars Gabriel Andersson en 1908.[2][4]

Etimología

El nombre del género deriva de la palabra griega pachys (παχυς) que significa "grueso" y de la palabra latína dactylus, que a su vez proviene del griego antiguo dáktylos (δάκτυλος) que significa "dedo". El epíteto específico de P. rangei es en referencia al geólogo alemán, Paul Theodor Range quién fue el que descubrió la especie.[5][4]

Descripción

 src=
Nótese el cuerpo delgado, gran cabeza y ojos saltones.

Pachydactylus rangei es un geco de tamaño pequeño; puede crecer hasta una longitud de 13-15 cm, incluyendo la cola que suele llegar a medir 6 cm. Tiene un cuerpo delgado aplandado dorsalmente junto a su cabeza.[6][7]​ La cabeza es grande y posee ojos grandes y saltones, de color amarillento con un iris de color negro y pupila vertical blanca. Como la mayoría de los gecos, carece de párpados, en cambio, los ojos están cubiertos con una escama transparente, llamada anteojo, la cuál limpia lamiendola cada cierto tiempo.[6][3]

Como su nombre lo indica, son lagartijas de piernas delgadas con patas anchas de dedos completamente palmeados que contienen pequeños cartílagos que soportan un delicado sistema de músculos que coordinan los finos movimientos de sus extremidades para recoger arena, lo que le permite a este geco excavar fácilmente y correr sobre arena suelta; este geco desarrolló pies palmeados como una adaptación para ayudarlos a permanecer sobre la arena del desierto de Namib o para enterrarse debajo de la arena, debido a que son de hábitos nocturnos y necesitan estar de días en madrigueras que ellos mismos cavan para pasar la noche encima de la arena alimentándose.[6][2][7]​ Como otros gecos, sus pies también tienen almohadillas adhesivas en los dedos que tienen filas de placas llamadas láminas, que están cubiertas con miles de proyecciones microscópicas en forma de gancho llamadas vellosidades, las cuáles atrapan cualquier irregularidad superficial menor para ayudar al geco a trepar.[6][3]

Tiene una longevidad aproximada de 1-5 años.[6]​ Los machos tienen colas más gruesas que las hembras. La masa de la hembra puede llegar a rondar los 10 gramos y la del macho unos 6 gramos. Esta especie es bastante similar en apariencia a Ptenopus garrulus, otra especie de geco que se encuentra dentro de su área de distribución.

P. rangei tiene vocalizaciones complejas, que van desde chirridos y chasquidos hasta croar y ladrar. Estas formas de comunicación se utilizan cuando se molesta al lagarto o si está tratando de atraer a una pareja.[6]

Fluorescencia

 src=
varios ejemplares, machos y hembras.

Este geco produce fluorescencia azul y verde. La fluorescencia inherente se produce cuando el animal entra en contacto con la luz que la Luna refleja del Sol. Es capaz de absorberla, para luego emitir una longitud de onda más larga a partir de secreciones químicas en su piel. Un pigmento específico sobre ésta, llena de cristales de guanina, es el que les permite brillar de esta manera.[8]

Coloración

 src=
Nótese el patrón de color.

El gecko de patas palmeadas es de un color muy pálido, casi translúcido, lo cual ocurre porque su piel está cubierta de finas escamas lisas; debido a estas escamas translúcidas, se pueden ver algunos órganos internos.[2][6][7]​ La cabeza y la superficie dorsal son de color anaranjado-salmón claro con dos líneas laterales intermitentes de color rosado brillante; la superficie ventral es blanquecina-amarillenta; la cabeza tiene una banda azulada con una pequeña mancha de color naranja en el hocico; los ojos son amarillos. La coloración de su piel les permite camuflarse muy bien entre la arena del desierto de Namib.[6]

Alimentación

Es un animal insectívoro y nocturno.[5][3][6][7][4][2]​ Se les conoce como cazadores ineficientes porque sus presas (saltamontes, arañas pequeñas y cualquier artrópodo lo suficientemente pequeño para que pueda digerir) pueden evitarlos fácilmente. Sin embargo, al cazar de noche, pueden aprovechar la falta de competencia de otros lagartos durante las horas en que los insectos y las arañas están desprevenidos. Sus grandes ojos y pupilas verticales ayudan a las lagartijas a ver bien de noche.[3][6]​ Su principal fuente de agua son las gotas de rocío que se encuentran sobre la vegetación; también puede absorber la humedad a través de su piel.

Reproducción

La temporada de reproducción del geco de patas palmeadas de Namib comienza en la primavera, de abril a mayo. Como ocurre con otros lagartos, los gecos machos muerden el cuello de la hembra y luego la sujetan con fuerza mientras maniobran su cola debajo de la de ella para completar la cópula.[6][9][10]

Las hembras ponen huevos en pares, aunque las hembras jóvenes que nunca antes han puesto huevos solo ponen huevo. Los huevos se entierran en un sustrato húmedo a unos 30°C. Los huevos son de calcáreo, y miden alrededor de 8-11 por 7-9 mm; pueden estar pegados o separados. Las crías nacen en unas ocho semanas, dependiendo de cuándo la hembra pone los huevos (generalmente entre mayo y agosto), las crías emergen entre julio y octubre; cuando las crías salen del cascarón después llegan a medir 10 cm de largo; comienzan a comer después de unos cuatro días.[6][10][9]

Distribución y hábitat

Pachydactylus rangei es endémico del desierto de Namibia, se asocia típicamente con arenas arrastradas por el viento a lo largo de la costa y el desierto y hasta 130 kilómetros tierra adentro a altitudes de hasta 400 metros.[1][11]​ El desierto de Namibia se encuentra en la parte sur de África. La localidad tipo es Lüderitz en Namibia.

Su hábitat se encuentra entre rocas y vegetación achaparrada y sobre la arena suelta y seca de las dunas de arena. Estos gecos prefieren las regiones arenosas del desierto y solo se encuentran en la parte costera de Namibia y Richtersveld en el extremo norte de Namaqualand en el Cabo.[1]

Estado de conservación

Esta especie se recolecta de manera oportunista para el comercio internacional de mascotas.[1]

Referencias

  1. a b c d Baptista, N., Bauer, AM, Becker, F., Conradie, W. & Ceríaco, LMP. (2020). «Pachydactylus rangei». UICN. Consultado el 4 de febrero de 2022.
  2. a b c d e «Pachydactylus rangei». The Reptile Database. Consultado el 4 de febrero de 2022.
  3. a b c d e Cogger, Harold G. 1992. Reptiles and Amphibians. Smithmark Publishers, Nueva York. págs. 131, 146-9.
  4. a b c d Andersson, L. G. (1908). "A remarkable new gecko from South— Africa and a new Stenocercus—species from South—America in the Natural History Museum in Wiesbaden". Jahrbüchern des Nassauischen Vereins für Naturkunde in Wiesbaden, 61:299-306.
  5. a b c Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Palmatogecko rangei, p. 217).
  6. a b c d e f g h i j k l m Cutler, Melanie. «Pachydactylus rangei (Namib Sand Gecko, Web-footed gecko)». Animal Diversity Web (en inglés). Consultado el 4 de febrero de 2022.
  7. a b c d Haacke, WD. (1976). "The Burrowing Geckos of Southern Africa: 2. (Palmatogecko & Kakaogecko)". Anales Transvaal Mus. 30 (2): 13-29
  8. «Descubren una nueva especie de gecko neón que brilla con la luz de la Luna». National Geographic en Español. 13 de enero de 2021. Consultado el 4 de febrero de 2022.
  9. a b Seufer, Hermann. 1985. Keeping and Breeding Geckos. TFH Publications, Germany. pp. 91-3.
  10. a b Mattison, Chris. 1991. Keeping and Breeding Lizards. Blandford, London. pp. 88-94.
  11. Branch, WR 1998. Field Guide to Snakes and other Reptiles of Southern Africa. Tercera edición. Struik Publishers, Ciudad del Cabo.

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Pachydactylus rangei: Brief Summary ( Spanish; Castilian )

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El geco de arena de Namib (Pachydactylus rangei), también conocido como geco de la duna de arena de Namib o geco de patas palmeadas de Namib, es una especie de lagarto escamoso gecónido del género Pachydactylus de tamaño pequeño. Habita en las zonas áridas de Angola, Namibia y Sudáfrica.​​​​​ Fue descrito por primera vez en por el zoólogo sueco Lars Gabriel Andersson en 1908.​​

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Pachydactylus rangei ( Basque )

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(RLQ=window.RLQ||[]).push(function(){mw.log.warn("Gadget "ErrefAurrebista" was not loaded. Please migrate it to use ResourceLoader. See u003Chttps://eu.wikipedia.org/wiki/Berezi:Gadgetaku003E.");});
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Pachydactylus rangei: Brief Summary ( Basque )

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Pachydactylus rangei Pachydactylus generoko animalia da. Narrastien barruko Gekkonidae familian sailkatuta dago.

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Pachydactylus rangei ( French )

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Pachydactylus rangei est une espèce de geckos de la famille des Gekkonidae[1].

Répartition

Cette espèce se rencontre en Afrique du Sud, en Namibie et dans le sud de l'Angola[1]. Elle est endémique au désert du Namib.

Description

Ce gecko terrestre est insectivore.

Étymologie

Cette espèce est nommée en l'honneur de P. Range, le collecteur de l'holotype.

Publication originale

  • Andersson, 1908 : A remarkable new gecko from South- Africa and a new Stenocercus-species from South-America in the Natural History Museum in Wiesbaden. Jahrbüchern des Nassauischen Vereins für Naturkunde in Wiesbaden, vol. 61, p. 299-306 (texte intégral).

Notes et références

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Pachydactylus rangei: Brief Summary ( French )

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Pachydactylus rangei est une espèce de geckos de la famille des Gekkonidae.

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Pachydactylus rangei ( Italian )

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Il geco palmato (Pachydactylus rangei (Andersson, 1908)) è un sauro della famiglia Gekkonidae[1], endemico del deserto del Namib.

Descrizione

Questo geco di colore rosato è lungo dai 12 ai 14 cm.[1]
È conosciuto per i suoi piedi palmati, che gli consentono di correre fra le dune del deserto senza affondare nella sabbia.

Biologia

Trascorre le ore del giorno in lunghe gallerie che scava nella sabbia ed esce di notte per cacciare.

Per ovviare alla siccità del deserto, beve l'acqua che si condensa sulla sua stessa pelle durante le notti umide.

Se si sente minacciato, si solleva irrigidendo le zampe per apparire più grosso.

Alimentazione

Si nutre esclusivamente di insetti.

Riproduzione

È una specie ovipara.[1]

Le femmine depongono due uova tra maggio e agosto, i piccoli nascono dopo 70-90 giorni.

Distribuzione e habitat

Vive in Sudafrica, Namibia e Angola meridionale[1].

Note

  1. ^ a b c d Pachydactylus rangei (Andersson, 1908), su The Reptile Database. URL consultato il 14 ottobre 2019.

Bibliografia

  • Andersson, 1908: A remarkable new gecko from South- Africa and a new Stenocercus-species from South-America in the Natural History Museum in Wiesbaden. Jahrbüchern des Nassauischen Vereins für Naturkunde in Wiesbaden, vol. 61, p. 299-306 (testo integrale della pubblicazione originale).

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Pachydactylus rangei: Brief Summary ( Italian )

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Il geco palmato (Pachydactylus rangei (Andersson, 1908)) è un sauro della famiglia Gekkonidae, endemico del deserto del Namib.

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Ørkengekko ( Norwegian )

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Ørkengekkoen er en sjelden og ørkenlevende gekko. Den har hud mellom tærne som fungerer som truger i den myke sanden. Den graver seg ned i sanden får å søke ly for bytteetere og sola. I tunnelåpninga lurer den termitter og andre insekter, som den overfaller når de kommer forbi. Den kan bli opptil 1,5 com lang.

Eksterne lenker

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Ørkengekko: Brief Summary ( Norwegian )

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Ørkengekkoen er en sjelden og ørkenlevende gekko. Den har hud mellom tærne som fungerer som truger i den myke sanden. Den graver seg ned i sanden får å søke ly for bytteetere og sola. I tunnelåpninga lurer den termitter og andre insekter, som den overfaller når de kommer forbi. Den kan bli opptil 1,5 com lang.

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Pachydactylus rangei ( Polish )

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Pachydactylus rangei – gatunek gada z rodziny gekonowatych występujący na pustyni Namib.

Wygląd

Niewielki (10-15 cm) gekon o łososiowym ubarwieniu z jasnym brzuchem i brązowymi pasami na grzbiecie. Pomiędzy palcami posiada błonę, pomagającą mu poruszać się po sypkim piasku i zakopywać się w nim.

Tryb życia

Gekon żywi się owadami, takimi jak świerszcze i szarańcze, oraz niewielkimi pająkami. Prowadzi nocny tryb życia, dnie spędza ukryty w piasku. Dożywa 5 lat.

Bibliografia

  1. Natonal Geographic [dostęp 25 grudnia 2009]
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Pachydactylus rangei: Brief Summary ( Polish )

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Pachydactylus rangei – gatunek gada z rodziny gekonowatych występujący na pustyni Namib.

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Pachydactylus rangei ( Romanian; Moldavian; Moldovan )

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Pachydactylus rangei (cunoscută și ca șopârla gecko namib) este o specie de șopârlă mică din familia Gekkonidae. Trăiește în zonele aride din Angola și Namibia și a fost descrisă pentru prima dată de L. G. Anderson în anul 1908, care a denumit-o după descoperitorul său, Dr. P. Range.[3]

Referințe

  1. ^ Bauer, Aaron. Pachydactylus rangei Andersson, 1908”. ITIS Report. Accesat în 7 septembrie 2014.
  2. ^ Pachydactylus rangei Andersson, 1908”. The Reptile Database. Accesat în 7 septembrie 2014.
  3. ^ Pachydactylus rangei Andersson, 1908”. www.Pachydactylus.com. Accesat în 7 septembrie 2014.
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Pachydactylus rangei: Brief Summary ( Romanian; Moldavian; Moldovan )

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Pachydactylus rangei (cunoscută și ca șopârla gecko namib) este o specie de șopârlă mică din familia Gekkonidae. Trăiește în zonele aride din Angola și Namibia și a fost descrisă pentru prima dată de L. G. Anderson în anul 1908, care a denumit-o după descoperitorul său, Dr. P. Range.

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Tắc kè palmato ( Vietnamese )

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Pachydactylus rangei là một loài thằn lằn trong họ Gekkonidae. Loài này được Andersson mô tả khoa học đầu tiên năm 1908.[3]

Chú thích

  1. ^ Bauer, Aaron. Pachydactylus rangei Andersson, 1908”. ITIS Report. Truy cập ngày 9 tháng 12 năm 2012.
  2. ^ Pachydactylus rangei Andersson, 1908”. The Reptile Database. Truy cập ngày 9 tháng 12 năm 2012.
  3. ^ Pachydactylus rangei. The Reptile Database. Truy cập ngày 31 tháng 5 năm 2013.

Tham khảo


Hình tượng sơ khai Bài viết liên quan đến họ Tắc kè này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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Tắc kè palmato: Brief Summary ( Vietnamese )

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Pachydactylus rangei là một loài thằn lằn trong họ Gekkonidae. Loài này được Andersson mô tả khoa học đầu tiên năm 1908.

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나미브물갈퀴도마뱀붙이 ( Korean )

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나미브물갈퀴도마뱀붙이(Pachydactylus rangei )는 나미브 샌드 게코(Namib sand gecko)나 나미브 웹풋 게코(Namib web-footed gecko)라고도 불리며, 도마뱀붙이과의 일이다. 앙골라, 나미비아, 남아프리카 공화국의 건조한 지역에 서식하며, 스웨덴동물학자 라르스 가브리엘 안데르손(:en:Lars Gabriel Andersson)이[2] 독일지질학자 파울 랑거(:en:Paul Theodor Range) 박사를 기려 명명하여[3][4] 최초로 기술하였다.

형태

나미브물갈퀴는 6 cm 에 이르는 꼬리를 포함해 13 cm 까지 자란다. 머리는 가느다란 몸통과 꽤나 대비되며, 둘 다 윗부분이 납작하다. 눈은 크고 검으며 동공은 수직으로 찢어져있다. 나미브물갈퀴는 굉장히 창백해서 거의 반투명하다. 몸은 연어색 바탕에 밝은 갈색 줄무늬, 무늬가 나있다. 이러한 색깔 덕에 나미브사막의 모래 속에서 자연스럽게 위장할 수 있다.[5] 피부는 작고 부드운 비늘로 덮여있으며 반투명하고, 내부의 몇몇 장기를 들여다볼 수 있다. 다리는 가늘지만 발은 넓고, 발가락은 완전히 물갈퀴로 뒤덮여있으며, 이 적응 덕에 굴을 쉽게 파고 느슨한 모래 위를 달릴 수 있다.[5] 야행성이며 낮에는 스스로 판 굴 속에서 지내다가 밤에 나와서 모래 위에서 사냥한다. 발에는 빨판도 나있어서 기어오르기도 잘 한다.[5] 수컷의 꼬리는 암컷보다 두껍다. 암컷의 몸무게는 10 g 까지, 수컷은 6 g 까지 나간다.[6] 머리, 등의 표면은 분홍빛 갈색 바탕에 더 짙은 무늬가 새겨져있으며, 특히 간간히 옆구리에 선이 나있으며, 밑부분은 황백색이다. 눈 사이에는 보통 푸른색 줄무늬가 나있다. 이 종은 서식지가 겹치는 짖는도마뱀붙이(:en:Ptenopus garrulus)와 비슷하게 생겼다.[3][7]

분포와 서식지

나미브물갈퀴는 아프리카 남부 나미브사막의 해안 근방에 고유하며, 해안에서 130km까지 떨어진, 고도 300m 까지의 내륙지방에까지 서식한다.[8] 모식지(:en:Type locality (biology))는 나미비아뤼데리츠다. 서식지는 바위가 많고 잘 자라지 못한 초목이 돋아난, 사구의 건조하고 느슨한 모래 위이다.[7] 나미브물갈퀴는 모래사막을 선호하며 나미비아의 해안가 혹은 나마콸란트(Namaqualand) 최극단의 리흐터스벨트(Richtersveld)에서만 발견된다.[9]

식성

야생환경에서는 귀뚜라미, 메뚜기, 작은 거미를 먹는다.[5] 딱정벌레와 여타의 모래 위에서 찾을 수 있는 작은 곤충도 먹는다.[9] 사육환경에서는 보통 귀뚜라미와 애벌레를 급여하는데, 활동적인 모습을 보고 싶다면 귀뚜라미를 주는 게 좋다.[10] 눈이 커서 밤에 사냥할 때 먹이를 볼 수 있다.[5]

적응

나미브물갈퀴는 가혹한 사막환경에서 살아남기 위해 다양한 특성을 진화시켰다. 발가락에는 물갈퀴가 있어서 모래 속에 굴을 파거나 모래 위를 걸을 수 있다.[5] 발가락 밑에 빨판이 있어서 기어오르기도 잘한다.[5] "발가락의 빨판에는 박판(lamellae)이 열을 지어 나있으며, 이는 각각 융모(villosity)라고 불리는 수천 개의 미세한 갈고리로 뒤덮여있다. 융모는 표면의 미세한 거친 부분에 고정되어서 도마뱀붙이가 기어오를 수 있도록 한다."[11]

나미브물갈퀴는 먹이를 포착하기 위해 커다란 눈을 가지고 있다.[5] "나미브물갈퀴는 대부분의 도마뱀붙이류처럼 눈꺼풀이 없고, 대신 눈비늘(spectacle)이라 불리는 투명한 비늘로 덮여있다. 주기적으로 핥아서 눈비늘 위의 먼지를 제거한다."[11]

생태

나미브물갈퀴는 야행성이며, 낮에는 깊이가 1미터에 이르는 굴 속에서 보낸다.[7] 밤에는 흰개미, 개미, 딱정벌레, 메뚜기, 거미 따위의 절지동물을 먹기 위해 기어나온다.[7] 물은 주로 초목에 맺힌 이슬을 통해 섭취하며 피부를 통해 습기를 흡수할 수도 있다.[7] 뀍뀍, 끽끽, 깍깍 등의 다양한 발성을 통해 의사소통한다.[5]

각각의 개체는 보통 혼자 살아간다. 방해받거나 짝을 찾을 때면 뀍뀍 꺽꺽댈 수 있다. 4,5월에 번식한다. 수컷은 짝짓기를 할 때 암컷을 꽉 움켜쥐는데, 이빨로 목을 물고 꼬리로 몸통을 감싼다. 암컷은 한두 개의 단단한 타원형의 을 낳아서 축축한 모래 속에 묻는데, 알은 30 °C (86 °F) 가량의 온도 속에서 포란(:en:Egg incubation)될 필요가 있다. 8주 뒤에는 길이 10 cm (4 in) 가량의 유체가 부화하며, 4일 뒤에는 먹이를 먹기 시작한다.[7]

보전 상태와 위협

나미브물갈퀴를 위협하는 것은 주로 인간활동이다. 사람들은 나미브물갈귀를 먹기 위해 사냥하며, 서식지를 파괴한다.[8] 애완동물 시장에서도 수요가 있기 때문에 경제적 가치가 있다.[7] 어떤 사람들은 나미브물갈퀴가 굉장히 빠르며 사람의 손을 좋아하지 않음에도 투명한 테라리움 안에 가둬 애완용으로 기른다.[10] 야생에서는 5년까지 살 수 있다.[5] 나미브물갈퀴를 보존하기 위해 법이 제정되기도 했지만, 이 녀석들은 보호종 목록에 들어있지 않으며, 종의 존속 여부가 불투명한 상태는 아니다.[8]

각주

  1. Bauer, Aaron. Pachydactylus rangei Andersson, 1908”. 《ITIS Report》. 2012년 12월 9일에 확인함.
  2. Pachydactylus rangei Andersson, 1908”. 《The Reptile Database》. 2012년 12월 9일에 확인함.
  3. Pachydactylus rangei Andersson, 1908”. 《www.Pachydactylus.com》. 2014년 9월 7일에 원본 문서에서 보존된 문서. 2012년 12월 9일에 확인함.
  4. Beolens B, Watkins M, Grayson M. 2011. The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Palmatogecko rangei, p. 217).
  5. National Geographic Society. “Web-Footed Gecko”. 《National Geographic》.
  6. “Ecology Care and Breeding of the Namib Web Footed Gecko - Gecko Time”. 《Gecko Time》. November 2011.
  7. Cutler, Melanie (1999). Pachydactylus rangei . Animal Diversity Web. 2012년 12월 9일에 확인함.
  8. “Descriptions and articles about the Namibia Web-footed Gecko (Pachydactylus rangei) - Encyclopedia of Life”. 《Encyclopedia of Life》.
  9. “Web-Footed Gecko - Palmatogecko rangei . 《ecotravel.co.za》. 2015년 7월 1일에 원본 문서에서 보존된 문서. 2019년 9월 7일에 확인함.
  10. “Namib Sand Gecko Care Guide”. 《reptilesncritters.com》.
  11. http://animaldiversity.org/accounts/Pachydactylus_rangei/.
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나미브물갈퀴도마뱀붙이: Brief Summary ( Korean )

provided by wikipedia 한국어 위키백과

나미브물갈퀴도마뱀붙이(Pachydactylus rangei )는 나미브 샌드 게코(Namib sand gecko)나 나미브 웹풋 게코(Namib web-footed gecko)라고도 불리며, 도마뱀붙이과의 일이다. 앙골라, 나미비아, 남아프리카 공화국의 건조한 지역에 서식하며, 스웨덴동물학자 라르스 가브리엘 안데르손(:en:Lars Gabriel Andersson)이 독일지질학자 파울 랑거(:en:Paul Theodor Range) 박사를 기려 명명하여 최초로 기술하였다.

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