And thereby hangs a tail: morphology, developmental patterns and biomechanics of the adhesive tails of crested geckos (
            <i>Correlophus ciliatus</i>
            )

Griffing, Aaron H.; Sanger, Thomas J.; Epperlein, Lilian; Bauer, Aaron M.; Cobos, Anthony J.; Higham, Timothy E.; Naylor, Emily; Gamble, Tony

doi:10.1098/rspb.2021.0650

Cited by 17 publications

(15 citation statements)

References 64 publications

(133 reference statements)

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“…The replicates fabricated without APS showed a smaller average height for the setae (≈12 µm, measured from n = 10 setae), while those fabricated with APS REM showed a larger average height for the setae (≈22 µm, measured from n = 10 setae), which was consistent with previously reported seta height measurements for gecko feet. [ 28 ] The setae in shed skin exhibited a smaller average height (≈17 µm) than those replicated by APS REM, which could be attributed to the shrinkage of the shed skin by drying. The aspect ratio of the setae replicated by APS REM was 16, indicating that APS REM could replicate features with an aspect ratio of at least 16 using the PVS.…”

Section: Resultsmentioning

confidence: 98%

High‐Resolution Surface Replication of Living Organisms using Air‐Through‐Precursor Suction‐Augmented Replica Molding

Mun

Jang

Eom

et al. 2022

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Replica molding is widely used to reproduce the surface microstructures that provide living organisms with distinct and useful functions. However, the existing methods are limited by the low resolution resulting from the air trapped in the structures during precursor solution loading. This study investigated replica molding with an air‐through‐precursor suction (APS) process, which used a degassed polydimethylsiloxane substrate to remove the trapped air through the precursor solution. The liquid loading times are characterized using a model template, and air suction that is up to 36 times faster can be achieved using the APS process relative to a conventional method. Using APS replica molding, biocompatible replicates from human fingerprints and gecko skin are fabricated using only a 3 min precursor solution loading step. Owing to the enhanced and reproducible resolution from APS replica molding, for the first time, the structural changes in the foot of a living gecko at the microscale can be observed when standing on a horizontal or vertical surface.

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Section: Resultsmentioning

confidence: 98%

High‐Resolution Surface Replication of Living Organisms using Air‐Through‐Precursor Suction‐Augmented Replica Molding

Mun

Jang

Eom

et al. 2022

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“…This could indicate that the morphology of this species is most adapted to environments with dense vegetation. Unlike H. turcicus and T. mauritanica, E. europaea has a prehensile tail bearing adhesive pads with sensory capabilities (Griffing et al 2021) found in many species of arboreal geckos (Bauer 1998; Bauer & Menegon 2006). From an evolutionary point of view, a tail can act as a fifth limb, facilitating both balance when resting and slow climbing within densely vegetated habitats on the ground and in the upper forest strata (Jusufi et al 2008).…”

Section: Discussionmentioning

confidence: 99%

High occupancy of European leaf-toed geckoEuleptes europaeain two island stands ofEucalyptus sp.: tree selection, co-occurrence and habitat effect

Deso

Priol

Reynier³

et al. 2023

Preprint

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The effective conservation of a species requires a thorough knowledge of its ecology. Long considered to live exclusively in rocky habitats, the European leaf-toed gecko (Euleptes europaea) has in fact been observed in vegetated and wooded habitats at several locations throughout its range. The tendency of this species to use these habitats seems to be clearly supported by its prehensile tail characteristic of geckos with arboreal behaviour. To better assess tree occupation by E. europaea and other co-occurring geckos, a site-occupancy survey was conducted in 2022 on the testing site of DGA (French MoD the Procurement Agency) of Levant Island (Hyeres, France). Two stands of Eucalyptus sp. containing 68 trees were selected to monitor. One stand lies in an anthropised context, consisting of scattered woodland and clear ground (stand 1), and the other represents a "natural" forest context with dense ground vegetation (stand 2). The results revealed high occupancy by E. europaea in both stands, with an average occupancy probability of 0.57 (CI 0.40;0.72). The Mediterranean house gecko (Hemidactylus turcicus) and Moorish gecko (Tarentola mauritanica) had an average occupancy probability of 0.28 (CI 0.16;0.44) and 0.07 (CI 0.03;0.16) respectively. In stand 2, E. europaea was the only gecko species found, suggesting that it is better adapted to this type of forest habitat, which may represent a refuge for this species. In view of these results, the ecology of this species should be reconsidered and the research broadened by systematically including vegetated and forest habitats.

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“…A recent paper by Griffing et al 60 examined maximum digital adhesion force across a range of body sizes of C. ciliatus on the same substrate used in our study. Using their scaling equation ( Adhesion = 1.041(body mass) – 0.69 ), the crested geckos in our study could generate a maximum frictional adhesive force of approximately 10 N with a single forelimb.…”

Section: Discussionmentioning

confidence: 99%

Jumping with adhesion: landing surface incline alters impact force and body kinematics in crested geckos

Higham

Hofmann

Modert

et al. 2021

Sci Rep

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Arboreal habitats are characterized by a complex three-dimensional array of branches that vary in numerous characteristics, including incline, compliance, roughness, and diameter. Gaps must often be crossed, and this is frequently accomplished by leaping. Geckos bearing an adhesive system often jump in arboreal habitats, although few studies have examined their jumping biomechanics. We investigated the biomechanics of landing on smooth surfaces in crested geckos, Correlophus ciliatus, asking whether the incline of the landing platform alters impact forces and mid-air body movements. Using high-speed videography, we examined jumps from a horizontal take-off platform to horizontal, 45° and 90° landing platforms. Take-off velocity was greatest when geckos were jumping to a horizontal platform. Geckos did not modulate their body orientation in the air. Body curvature during landing, and landing duration, were greatest on the vertical platform. Together, these significantly reduced the impact force on the vertical platform. When landing on a smooth vertical surface, the geckos must engage the adhesive system to prevent slipping and falling. In contrast, landing on a horizontal surface requires no adhesion, but incurs high impact forces. Despite a lack of mid-air modulation, geckos appear robust to changing landing conditions.

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And thereby hangs a tail: morphology, developmental patterns and biomechanics of the adhesive tails of crested geckos ( Correlophus ciliatus )

Cited by 17 publications

References 64 publications

High‐Resolution Surface Replication of Living Organisms using Air‐Through‐Precursor Suction‐Augmented Replica Molding

High‐Resolution Surface Replication of Living Organisms using Air‐Through‐Precursor Suction‐Augmented Replica Molding

High occupancy of European leaf-toed geckoEuleptes europaeain two island stands ofEucalyptus sp.: tree selection, co-occurrence and habitat effect

Jumping with adhesion: landing surface incline alters impact force and body kinematics in crested geckos

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