File:Serp de Vidre - Lución.jpg
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Summary
editDescriptionSerp de Vidre - Lución.jpg |
Català: Serp de vidre - Vidriol, llangardaix fotografiat al parc de Collserola - Barcelona Español: Lución, lagarto sin patas fotografiado en Collserola - Barcelona |
Date | |
Source | Own work |
Author | Joan Vega |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:54, 3 September 2011 | 4,506 × 2,696 (7.2 MB) | Joanvega (talk | contribs) |
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Metadata
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Image title | ENGLISH
Anguis fragilis, or slow worm, slow-worm, slowworm, blindworm or blind worm, is a limbless reptile native to Eurasia. Slow-worms are semi-fossorial (burrowing) lizards spending much of the time hiding underneath objects. The skin of the varieties of slow-worm is smooth with scales that do not overlap one another. Like many other lizards, slow-worms autotomize, meaning that they have the ability to shed their tails in order to escape predators. The tail regrows, but remains smaller. These reptiles are mostly active during the twilight and occasionally bask in the sun, but are more often found hiding beneath rocks and logs. They are carnivorous and, because they feed on slugs and worms, they can often be found in long grass and other damp environments. They are common in gardens and can be encouraged to enter and help remove pest insects by placing black plastic or a piece of tin on the ground. On warm days one or more slow worms will often be found underneath these collectors of heat. One of the biggest causes of mortality in slow worms in suburban areas is the domestic cat, from which it has no defense. Although these lizards are often mistaken for snakes, there are a number of features that differentiate them from snakes. The most important is they have small eyes with eyelids that blink like lizards. This is a feature that is not found in snakes. They may also have visible ears like lizards do, which snakes do not have. They shed their skin in patches like other lizards, rather than the whole skin as most snakes do. Slowworms also shed tails (autotomy) by breaking one of their tail vertebrae in half, as a defence mechanism, as lizards do. Also, the pattern of their ventral scales is totally different from that of snakes. More info: en.wikipedia.org/wiki/Anguis_fragilis CASTELLANO El lucion (Anguis fragilis) es un lagarto apodo (sin patas) comun en Europa y el este de Asia. Tambien se le conoce como culebrilla de cristal. Ocurre frecuentemente que se confunde al lucion con una serpiente, a pesar de que, en realidad, el lucion es todo un lagarto que carece de patas. No queda nada de sus miembros externos aunque, subsisten algunos vestigios en su esqueleto. Los adultos miden de 30 a 40 cm y la hembra alcanza a veces 50 cm. El lucion tiene el cuerpo cubierto de gruesas escamas de superficie brillante. Su colorido varia considerablemente e incluso se conocen formas locales azuladas. Es facil diferenciar al lucion de una serpiente, ya que sus ojos estan provistos de parpados moviles, mientras que las serpientes tienen los ojos cubiertos por una escama transparente y fija. No trepa, pero puede desplazarse bastante deprisa reptando. Cuando se le agarra por la cola, la secciona el mismo; este fenomeno se llama autotomia. El lucion vive en las praderas y en otros lugares humedos. No se le encuentra en lugares secos. Es un reptil sedentario que puede quedarse toda su vida en el mismo territorio. Es noctambulo, pero se muestra principalmente activo al amanecer y en el crepusculo. Al contrario de los demas lagartos, que son amigos del sol, el lucion prefiere las tinieblas y el frescor. El lucion tiene pocos enemigos, salvo los carnivoros y las aves de presa. Escapa de los depredadores mediante movimientos laterales rapidos y convulsivos del cuerpo y la cola. Se nutre principalmente de lombrices y de limacos que atrapa entre sus mandibulas provistas de pequenos dientes conicos, sacudiendolos violentamente antes de tragarlos. Es un valioso auxiliar del agricultor y del jardinero. Tiene una gran necesidad de agua y bebe frecuentemente. Mas info: es.wikipedia.org/wiki/Anguis_fragilis |
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Camera manufacturer | SONY |
Camera model | NEX-5 |
Copyright holder | Copyright (C) Joan Vega |
Exposure time | 1/40 sec (0.025) |
F-number | f/2.8 |
ISO speed rating | 200 |
Date and time of data generation | 18:08, 21 June 2011 |
Lens focal length | 16 mm |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | NEX-5 Ver.03 |
File change date and time | 09:21, 3 September 2011 |
Exposure Program | Aperture priority |
Exif version | 2.3 |
Date and time of digitizing | 18:08, 21 June 2011 |
APEX shutter speed | 5.321928 |
APEX aperture | 2.970854 |
APEX brightness | 2.5 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Focal length in 35 mm film | 24 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |