Ecologically-related variation of digit morphology in Cyrtodactylus (Gekkota, Squamata) reveals repeated origins of incipient adhesive toepads
Data files
May 15, 2024 version files 455.96 KB
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README.md
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Table_1_voucher_numbers_and_scale_area_data.csv
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Table_2_2D_Geometric_Morphometric_Coordiantes.csv
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Table_3_2D_Geomeotrc_Morphometric_Curves.csv
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Abstract
The exploitation of different locomotor substrates in different ecological niches has driven the evolution of specialized morphological structures, and similar ecological demands, such as the structure of the microhabitat, often lead to convergent or parallel evolution. The evolution of adhesive toepads in geckos remains understudied because of the paucity of phylogenetically informed investigations of candidate clades exhibiting purported incipient expression of these (i.e., species having evolved some, but not all, parts of the complex adhesive system of pad-bearing geckos). Using Cyrtodactylus, a speciose genus with well-established ecotypes, we tested the hypothesis that microhabitats that require more climbing will lead to the acquisition of incipient adhesive morphology. We measured subdigital scale area, a proxy for adhesive toepad evolution, and quantified subdigital scale shape for 77 of the 354 described species, including at least one representative of each ecotype. Subdigital scale area increased from terrestrial through generalist and saxicoline (rock-dwelling) to arboreal ecotypes, with subdigital scale shape evolving from ancestral conditions for padless lizards to lateromedially expanded lamella-like scales only in the arboreal ecotypes. This significant link between phenotype and environment supports the contention that scansorial, and particularly arboreal, Cyrtodactylus ecotypes have evolved incipiently expressed adhesive toepads. This highlights the suitability of this genus as a model system for studying the ecology and evolution of adhesive toepads as well as being a promising candidate for research on adaptive radiations.
https://doi.org/10.5061/dryad.f4qrfj73j
This is the dataset for our publication "Ecologically-related variation of digit morphology in Cyrtodactylus (Gekkota, Squamata) reveals repeated origins of incipient adhesive toepads" published in Functional Ecology by Jendrian Riedel, Katrin Eisele, Mariam Gabelaia, Timothy E. Higham, Joseph Wu, Quyen Hanh Do, Truong Quang Nguyen, Camila G. Meneses, Rafe M. Brown, Thomas Ziegler, L. Lee Grismer, Anthony P. Russell & Dennis Rödder.
Description of the data and file structure
Dataset for Riedel et al., 2024 containing a detailed list of 1) the voucher numbers and sources of all measured specimens and area measurements per specimen (SVL measurements from Riedel et al. (2024)), 2) 2D geometric morphometric coordinates per specimen (semi-landmarks overlapping with landmarks removed), 3) 2D geometric morphometric curves.
1) Table_1_voucher_numbers_and_scale_area_data.csv
2) Table_2_2D_Geometric_Morphometric_Coordiantes.csv
3) Table3_2D_Geomeotrc_Morphometric_Curves.csv
Explanations and Abbreviations for the Tables:
- ID = specimen ID (for abbreviations of collection location see table below)
- Specimen source = specimen collection location
- sex: m = male, f = female
- na = data not measured
- ecotype = ecotype assignment (following Grismer et al. 2020, 2021a)
- broadhabitat = broader habitat assignment (see Riedel et al. 2024)
- clade = taxonomic placement within Cyrtodactylus (following Grismer et al. 2021b)
- SVL = snout-to-vent length in mm
- manus area and pes area = area of the subdigital scales between the inflection point and the toe base of the manus and pes respectively in mm
- V1 - V8 = Landmarks denoting the points where the first three scales under the inflection point and proximal thereto meet with the 310 adjacent subdigital scales and the scales lateral or medial thereto
- V9 – V176 = semi-landmarks connecting the landmarks V1 - V8 (compare fig. 4 in Riedel et al. 2024 for details)
- number = number of curves for geometric morphometric analysis
- curves slide from (semi)landmark point "before" over "slide" to "after" (compare Table 3 in Riedel et al. 2024: Specifically, the way this is coded in Table 3 is that e.g., the curve 1 (first entry in the table) runs from V1 (before) over V9 (slide) to V10 (after). Then curve 2 (second entry) runs from V9 (before) over V10 (slide) to V11 (after), and so on)
Abbreviations for collection locations:
BMNH | Natural History Museum, London, United Kingdom |
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DN | Vietnam Academy of Science and Technology, Hanoi, Vietnam |
HB | Vietnam Academy of Science and Technology, Hanoi, Vietnam |
IEBR | Vietnam Academy of Science and Technology, Hanoi, Vietnam |
VNMN | Vietnam Academy of Science and Technology, Hanoi, Vietnam |
KU | Biodiversity Institute, University of Kansas, Lawrence, KS, USA |
LSUHC | Sa Sierra University Herpetological Collection, La Sierra, CA, USA |
RMNA RENA | Leiden Biodiversity Center |
ZMA RENA | Leiden Biodiversity Center |
ZFMK | LIB - Museum Koenig Bonn, Bonn, Germany |
ZMB | Museum für Naturkunde Berlin, Berlin Germany |
Literature cited:
- Grismer, L.L., Wood, P.L., Minh, J., Le, D., Quah, E.S.H. & Grismer, J.L. (2020). Evolution of habitat preference in 243 species of Bent-toed geckos (Genus Cyrtodactylus Gray, 1827) with a discussion of karst habitat conservation. Ecology and Evolution 00, 1–14.
- Grismer, L.L., Wood, P.L., Poyarkov, N.A., Le, M.D., Karunarathna, S., Chomdej, S., Suwannapoom, C., Qi, S., Liu, S., Che, J., Quah, E.S.H., Kraus, F., Oliver, P.M., Riyanto, A., Pauwels, O.S.G. & Grismer, J.L. (2021a). Karstic landscapes are foci of species diversity in the world’s third-largest vertebrate genus Cyrtodactylus Gray, 1827 (Reptilia: Squamata, Gekkonidae). Diversity 13, 1–15.
- Grismer, L.L., Wood, P.L., Poyarkov, N.A., Le, M.D., Kraus, F., Agarwal, I., Oliver, P.M., Nguyen, S.N., Nguyen, T.Q., Welton, L.J., Stuart, B.L., Luu, V.Q., Bauer, A.M., Kyle, A., Quah, E.S.H., Chan, K.O., Ziegler, T., Ngo, H., Roman, A., Aowphol, A., Chomdej, S., Suwannapoom, C., Siler, C.D., Anuar, S., Tri, N.V. & Grismer, J.L. (2021b). Phylogenetic partitioning of the third-largest vertebrate genus in the world, Cyrtodactylus Gray, 1827 (Reptilia; Squamata; Gekkonidae) and its relevance to taxonomy and conservation. Vertebrate Zoology 71, 101–154.
- Riedel, J., Eisele, K., Gabelaia, M., Higham, T.E., Wu, J., Do, Q.H., Nguyen, T.Q., Meneses, C.G., Brown, R.M., Ziegler, T., Grismer, L.L., Russell, A.P. & Rödder, D. (2024). Ecologically-related variation of digit morphology in Cyrtodactylus (Gekkota, Squamata) reveals repeated origins of incipient adhesive toepads. Functional Ecology.
We measured the subdigital scale area and quantified the subdigital scale shape of 77 Cyrtodactylus species from museum voucher specimens, measuring 3 to 10 specimens per species. For details of data collection see the methods section of the paper: Ecologically-related variation of digit morphology in Cyrtodactylus (Gekkota, Squamata) reveals repeated origins of incipient adhesive toepads, Riedel et al. 2024, Functional Ecology.