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Big cities, big bodies: urbanisation correlates with large body sizes and enhanced body condition in African dwarf chameleons (Genus: Bradypodion)

Published Online:22 Dec 2024https://hdl.handle.net/10520/ejc-afzoo_v59_n3-4_a145

Abstract

Urbanisation is a major driver of habitat transformation that alters the environmental conditions and selective regimes of the habitats where it occurs. For species inhabiting urban habitats, such alterations can facilitate adaptive responses in their phenotypes, including their morphology. Quantifying potential responses could provide important information for assessing adaptation to urbanisation and may also be relevant to their conservation. Previous studies on African dwarf chameleons (Bradypodion) have shown these lizards to have remarkable adaptive capacity in response to different habitats (e.g. closed canopy habitats vs. open canopy habitats). Several of these species exploit urban habitats, but the extent to which populations are adapting to urban environments has only recently started to receive attention. In this study, we quantify differences in body size and body condition between urban and natural populations of five species of dwarf chameleons. For most comparisons, either females, males or both sexes from urban populations were longer, heavier and/or had better body condition than those from natural populations. In the remaining cases, there were no differences in these traits between populations. Our findings conform with the emerging paradigm that urbanisation positively correlates with enhanced lizard body sizes and condition, although the reasons for this may be complex. Nevertheless, our data provide an avenue for future research into investigating the potential factors (e.g. food supply, predation risk, etc.) that facilitate the trends we observed.

  • Alberti M.2015. "Eco-evolutionary dynamics in an urbanising planet" . Trends in Ecology and Evolution 30: 114–126. https://doi.org/10.1016/j.tree.2014.11.007.

    Google Scholar

  • Arnfield AJ.2003. "Two decades of urban climate research: a review of turbulence, exchanges of energy and water, and the urban heat island" . International Journal of Climatology 23: 1–26. https://doi.org/10.1002/joc.859.

    Google Scholar

  • Balakrishna S, Batabyal A, Thaker M.2016. "Dining in the city: dietary shifts in Indian rock agamas across an urban–rural landscape" . Journal of Herpetology 50: 423–428. https://doi.org/10.1670/14-073.

    Google Scholar

  • Bates D, Mächler M, Bolker B, Walker S.2015. "Fitting linear mixed-effects models using lme4" . Journal of Statistical Software 67: 1–48. https://doi.org/10.18637/jss.v067.i01.

    Google Scholar

  • Battles AC, Whittle TK, Stehle CM, Johnson MA.2013. "Effects of human land use on prey availability and body condition in the green anole lizard, Anolis carolinensis" . Herpetological Conservation and Biology 8: 16–26.

    Google Scholar

  • Bonneaud C, Marnocha E, Herrel A, Vanhooydonck B, Irschick DJ, Smith TB.2016. "Developmental plasticity affects sexual size dimorphism in an anole lizard" . Functional Ecology 30: 235–243. https://doi.org/10.1111/1365-2435.12468.

    Google Scholar

  • Calsbeek R, Cox RM.2010. "Experimentally assessing the relative importance of predation and competition as agents of selection" . Nature 465: 613–616. https://doi.org/10.1038/nature09020.

    Google Scholar

  • Chejanovski ZA, Avilés-Rodríguez KJ, Lapiedra O, Preisser EL, Kolbe JJ.2017. "An experimental evaluation of foraging decisions in urban and natural forest populations of Anolis lizards" . Urban Ecosystems 20: 1011–1018. https://doi.org/10.1007/s11252-017-0654-5.

    Google Scholar

  • Chejanovski ZA, Kolbe JJ.2019. "Close encounters of the urban kind: predators influence prey body size variation in an urban landscape" . Evolutionary Ecology 33: 791–809. https://doi.org/10.1007/s10682-019-10008-1.

    Google Scholar

  • da Silva JM, Tolley KA.2013. "Ecomorphological variation and sexual dimorphism in a recent radiation of dwarf chameleons (Bradypodion)" . Biological Journal of the Linnean Society 109: 113–130. https://doi.org/10.1111/bij.12045.

    Google Scholar

  • Dillon ME, Wang G, Huey RB.2010. "Global metabolic impacts of recent climate warming" . Nature 467: 704–706. https://doi.org/10.1038/nature09407.

    Google Scholar

  • Ditchkoff SS, Saalfeld ST, Gibson CJ.2006. "Animal behavior in urban ecosystems: modifications due to human-induced stress" . Urban Ecosystems 9: 5–12. https://doi.org/10.1007/s11252-006-3262-3.

    Google Scholar

  • Donihue CM, Lambert MR.2015. "Adaptive evolution in urban ecosystems" . Ambio 44: 194–203. https://doi.org/10.1007/s13280-014-0547-2.

    Google Scholar

  • Evans KL, Gaston KJ, Sharp SP, McGowan A, Hatchwell BJ.2009. "The effect of urbanisation on avian morphology and latitudinal gradients in body size" . Oikos 118: 251–259. https://doi.org/10.1111/j.1600-0706.2008.17092.x.

    Google Scholar

  • Fischer JD, Schneider SC, Ahlers AA, Miller JR.2015. "Categorising wildlife responses to urbanisation and conservation implications of terminology" . Conservation Biology 29: 1246–1248. https://doi.org/10.1111/cobi.12451.

    Google Scholar

  • Forman RTT.2014. Urban ecology: science of cities. Cambridge: Cambridge University Press. https://doi.org/10.1017/CBO9781139030472.

    Google Scholar

  • French SS, Webb AC, Hudson SB, Virgin EE.2018. "Town and country reptiles: a review of reptilian responses to urbanisation" . Integrative and Comparative Biology 58: 948–966. https://doi.org/10.1093/icb/icy052.

    Google Scholar

  • Ghalambor CK, McKay JK, Carroll SP, Reznick DN.2007. "Adaptive versus non-adaptive phenotypic plasticity and the potential for contemporary adaptation in new environments" . Functional Ecology 21: 394–407. https://doi.org/10.1111/j.1365-2435.2007.01283.x.

    Google Scholar

  • Grimm NB, Faeth SH, Golubiewski NE, Redman CL, Wu J, Bai X, Briggs JM.2008. "Global change and the ecology of cities" . Science 319: 756–760. https://doi.org/10.1126/science.1150195.

    Google Scholar

  • Hendry AP, Farrugia TJ, Kinnison MT.2008. "Human influences on rates of phenotypic change in wild animal populations" . Molecular Ecology 17: 20–29. https://doi.org/10.1111/j.1365-294X.2007.03428.x.

    Google Scholar

  • Hopkins KP, Tolley KA.2011. "Morphological variation in the cape dwarf chameleon (Bradypodion pumilum) as a consequence of spatially explicit habitat structure differences" . Biological Journal of the Linnean Society 102: 878–888. https://doi.org/10.1111/j.1095-8312.2011.01618.x.

    Google Scholar

  • Iglesias S, Tracy C, Bedford G, Christian K.2012. "Habitat differences in body size and shape of the Australian agamid lizard, Lophognathus temporalis" . Journal of Herpetology 46: 297–303. https://doi.org/10.1670/11-084.

    Google Scholar

  • Jessop TS, Smissen P, Scheelings F, Dempster T.2012. "Demographic and phenotypic effects of human mediated trophic subsidy on a large Australian lizard (Varanus varius): meal ticket or last supper?" PLoS One 7: e34069. https://doi.org/10.1371/journal.pone.0034069.

    Google Scholar

  • Johnson MTJ, Munshi-South J.2017. "Evolution of life in urban environments" . Science 358: eaam8327. https://doi.org/10.1126/science.aam8327.

    Google Scholar

  • Katz EM, Tolley KA, Altwegg R.2013. "Survival and abundance of Cape dwarf chameleons, Bradypodion pumilum, inhabiting a transformed, semi-urban wetland" . The Herpetological Journal 23: 179–186.

    Google Scholar

  • Kotze J, Venn S, Niemelä J, Spence J.2011. Effects of urbanisation on the ecology and evolution of arthropods. In: Niemela J, Breuste JH, Guntenspergen G, McIntyre NE, Elmqvist T, James P (eds). Urban Ecology: Patterns, Processes and Applications. New York: Oxford University Press. pp 159–166. https://doi.org/10.1093/acprof:oso/9780199563562.003.0019.

    Google Scholar

  • LaBarbera M.1989. "Analysing body size as a factor in ecology and evolution" . Annual Review of Ecology and Systematics 20: 97–117. https://doi.org/10.1146/annurev.es.20.110189.000525.

    Google Scholar

  • Lambert MR, Brans KI, Des Roches S, Donihue CM, Diamond SE.2021. "Adaptive evolution in cities: progress and misconceptions" . Trends in Ecology and Evolution 36: 239–257. https://doi.org/10.1016/j.tree.2020.11.002.

    Google Scholar

  • LaMontagne JM, Kilgour RJ, Anderson EC, Magle S.2015. "Tree cavity availability across forest, park, and residential habitats in a highly urban area" . Urban Ecosystems 18: 151–167. https://doi.org/10.1007/s11252-014-0383-y.

    Google Scholar

  • McDonnell MJ, Hahs AK.2015. "Adaptation and adaptedness of organisms to urban environments" . Annual Review of Ecology, Evolution, and Systematics 46: 261–280. https://doi.org/10.1146/annurev-ecolsys-112414-054258.

    Google Scholar

  • McKinney ML.2008. "Effects of urbanisation on species richness: a review of plants and animals" . Urban Ecosystems 11: 161–176. https://doi.org/10.1007/s11252-007-0045-4.

    Google Scholar

  • Measey GJ, Hopkins KP, Tolley KA.2009. "Morphology, ornaments and performance in two chameleon ecomorphs: is the casque bigger than the bite?" Zoology 112: 217–226. https://doi.org/10.1016/j.zool.2008.09.005.

    Google Scholar

  • Miller AK, Alexander GJ.2009. "Do dwarf chameleons (Bradypodion) show developmental plasticity?" African Zoology 44: 45–54. https://doi.org/10.1080/15627020.2009.11407438.

    Google Scholar

  • Nemeth E, Pieretti N, Zollinger SA, Geberzahn N, Partecke J, Miranda AC, Brumm H.2013. "Bird song and anthropogenic noise: vocal constraints may explain why birds sing higher-frequency songs in cities" . Proceedings of the Royal Society B: Biological Sciences 280: 20122798. https://doi.org/10.1098/rspb.2012.2798.

    Google Scholar

  • Ortega-Álvarez R, MacGregor-Fors I.2009. "Living in the big city: effects of urban land-use on bird community structure, diversity, and composition" . Landscape and Urban Planning 90: 189–195. https://doi.org/10.1016/j.landurbplan.2008.11.003.

    Google Scholar

  • Peig J, Green AJ.2009. "New perspectives for estimating body condition from mass/length data: the scaled mass index as an alternative method" . Oikos 118: 1883–1891. https://doi.org/10.1111/j.1600-0706.2009.17643.x

    Google Scholar

  • Petford MA, Herrel A, Alexander GJ, Tolley KA.2024. "Differences between urban and natural populations of dwarf chameleons (Bradypodion damaranum): a case of urban warfare?" Urban Ecosystems 27: 577–589. https://doi.org/10.1007/s11252-023-01474-1.

    Google Scholar

  • Putman BJ, Tippie ZA.2020. "Big city living: a global meta-analysis reveals positive impact of urbanisation on body size in lizards" . Frontiers in Ecology and Evolution 8: 580745. https://doi.org/10.3389/fevo.2020.580745.

    Google Scholar

  • R Core Team. 2022. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL https://www.R-project.org/.

    Google Scholar

  • Santangelo JS, Rivkin LR, Advenard C, Thompson KA.2020. "Multivariate phenotypic divergence along an urbanisation gradient" . Biology Letters 16: 20200511. https://doi.org/10.1098/rsbl.2020.0511.

    Google Scholar

  • Shochat E, Warren P, Faeth S, McIntyre N, Hope D.2006. "From patterns to emerging processes in mechanistic urban ecology" . Trends in Ecology and Evolution 21: 186–191. https://doi.org/10.1016/j.tree.2005.11.019.

    Google Scholar

  • Thawley CJ, Moniz HA, Merritt AJ, Battles AC, Michaelides SN, Kolbe JJ.2019. "Urbanization affects body size and parasitism but not thermal preferences in Anolis lizards" . Journal of Urban Ecology 5: juy031. https://doi.org/10.1093/jue/juy031

    Google Scholar

  • Tolley KA.2020. "Cham-aliens: present and historical translocations of chameleons (Bradypodion)" . African Herp News 74: 54–64.

    Google Scholar

  • Tolley KA, Burger M.2007. Chameleons of southern Africa. Cape Town: Struik.

    Google Scholar

  • Tolley KA, Conradie W, Pietersen DW, Weeber J, Burger M, Alexander GJ.2023. Conservation status of the reptiles of South Africa, Eswatini and Lesotho. Suricata 10. Pretoria: South African National Biodiversity Institute.

    Google Scholar

  • Warner DA, Johnson MS, Nagy TR.2016. "Validation of body condition indices and quantitative magnetic resonance in estimating body composition in a small lizard" . Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 325: 588–597. https://doi.org/10.1002/jez.2053.

    Google Scholar

  • Warton DI, Duursma RA, Falster DS, Taskinen S.2012. "Smatr 3–an R package for estimation and inference about allometric lines" . Methods in Ecology and Evolution 3: 257–259. https://doi.org/10.1111/j.2041-210X.2011.00153.x.

    Google Scholar

  • Whitehead A, Clark BW, Reid NM, Hahn ME, Nacci D.2017. "When evolution is the solution to pollution: Key principles, and lessons from rapid repeated adaptation of killifish (Fundulus heteroclitus) populations" . Evolutionary Applications 10: 762–783. https://doi.org/10.1111/eva.12470.

    Google Scholar

  • Whitehead Z, Roach JL, Zhang S, Galvez F.2011. "Genomic mechanisms of evolved physiological plasticity in killifish distributed along an environmental salinity gradient" . Proceedings of the National Academy of Sciences 108: 6193–6198. https://doi.org/10.1073/pnas.1017542108.

    Google Scholar
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