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Present-day salamander families

Like other reptiles, geckos are ectothermic

A recent study has however shown that gecko adhesion is in fact mainly determined by electrostatic interaction (caused by contact electrification), not van der Waals or capillary forces.

Date:

December 12, 2019

Time:

2:30pm — 5:30pm *

Location:

3743 Marigold Plaza

* The setae on the feet of geckos are also self-cleaning and usually remove any clogging dirt within a few steps.

Sustainability

About 60% of gecko species have adhesive toe pads that allow them to adhere to most surfaces without the use of liquids or surface tension. Such pads have been gained and lost repeatedly over the course of gecko evolution.

Our Culture

When shedding begins, the gecko speeds the process by detaching the loose skin from its body and eating it. For young geckos, shedding occurs more frequently, once a week, but when they are fully grown, they shed once every one to two months.

Presentations

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Most gecko species can lose their tails in defense, a process called autotomy. Many species are well known for their specialised toe pads that enable them to climb smooth and vertical surfaces, and even cross indoor ceilings with ease.

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Geckos are well known to people who live in warm regions of the world, where several species make their home inside human habitations. These (for example the house gecko) become part of the indoor menagerie and are often welcomed.

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All geckos shed their skin at fairly regular intervals, with species differing in timing and method. Leopard geckos shed at about two- to four-week intervals. The presence of moisture aids in the shedding.

Articles

Salamander Genetics & Taxonomy

Their resemblance to lizards is the result of symplesiomorphy, their common retention of the primitive tetrapod body plan, but they are no more closely related to lizards than they are to mammals. Their nearest relatives are the frogs and toads, within Batrachia.

Guide to Salamander Feeding & Diet

Though frequently feeding on slow-moving animals like snails, shrimps and worms, sirenids are unique among salamanders for having developed speciations towards herbivory, such as beak-like jaw ends and extensive intestines. They feed on algae and other soft-plants in the wild.

Iberian Ribbed Newt (Pleurodeles waltl)

The Iberian ribbed newt (Pleurodeles waltl) has another method of deterring aggressors. Its skin exudes a poisonous, viscous fluid and at the same time, the newt rotates its sharply pointed ribs through an angle between 27 and 92°, and adopts an inflated posture.

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Gecko Adhesion

A recent study has however shown that gecko adhesion is in fact mainly determined by electrostatic interaction (caused by contact electrification), not van der Waals or capillary.

Self Cleaning

The setae on the feet of geckos are also self-cleaning and usually remove any clogging dirt within a few steps. is more difficult for geckos to adhere to than many other surfaces.

Spatula-Shaped Setae

The spatula-shaped setae arranged in lamellae on gecko footpads enable attractive van der Waals’ forces between the β-keratin lamellae/setae/spatulae structures surface.