Toe pad morphology and adhesion in the miniaturized gecko, Chatogekko amazonicus (Gekkota: Sphaerodactylidae).

Autor: Griffing AH; Department of Chemical & Biological Engineering, Princeton University, Princeton, New Jersey, USA.; Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA.; Milwaukee Public Museum, Milwaukee, Wisconsin, USA., Daza JD; Department of Biological Sciences, Sam Houston State University, Huntsville, Texas, USA., Nielsen SV; Department of Biological Sciences, Louisiana State University Shreveport, Shreveport, Louisiana, USA.; Department of Natural History, Florida Museum of Natural History, Gainesville, Florida, USA., Werneck FP; Coordenação de Biodiversidade, Programa de Coleções Científicas Biológicas, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil., Viana PF; Coordenação de Biodiversidade, Laboratório de Genética Animal, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil., Gamble T; Milwaukee Public Museum, Milwaukee, Wisconsin, USA.; Department of Biological Sciences, Marquette University, Milwaukee, Wisconsin, USA.; Bell Museum of Natural History, University of Minnesota, St. Paul, Minnesota, USA.
Jazyk: angličtina
Zdroj: Anatomical record (Hoboken, N.J. : 2007) [Anat Rec (Hoboken)] 2024 Nov; Vol. 307 (11), pp. 3421-3431. Date of Electronic Publication: 2024 May 28.
DOI: 10.1002/ar.25511
Abstrakt: Chatogekko amazonicus is a miniaturized gecko from northern South America and is among the smallest of toe pad bearing lizards. The toe pads of C. amazonicus are miniscule, between 18% and 27% of the plantar surface area. We aimed to investigate the relationship between adhesive toe pad morphology, body size, and adhesive capabilities. Using scanning electron microscopy, we determine that the adhesive pads of C. amazonicus exhibit branched setae similar to those of other geckos, but that are generally much smaller. When compared with other gecko taxa, we show that C. amazonicus setae occupy a similar range of seta length: snout-vent length ratio and aspect ratio as other gekkonoid species (i.e. Gekkonidae, Phyllodactylidae, and Sphaerodactylidae). We demonstrate that C. amazonicus-even with its relatively small toe pads-is capable of climbing a smooth glass surface at a nearly vertical angle. We suggest that sphaerodactylids like C. amazonicus offer an excellent system for studying toe pad morphology and function in relation to miniaturization.
(© 2024 The Author(s). The Anatomical Record published by Wiley Periodicals LLC on behalf of American Association for Anatomy.)
Databáze: MEDLINE
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