Endemism, gigantism and extinction in island lizards: the genus Gallotia on the Canary Islands

Publication Type:Journal Article
Year of Publication:2000
Authors:BARAHONA, F, EVANS, SE, MATEO, JA, García-Márquez, M, LOPEZ-JURADO, LF
Journal:Journal of Zoology
Volume:250
Issue:3
Date Published:2000
ISBN Number:1469-7998
Keywords:Canary islands, comparative anatomy, Conservation, Fringillidae, Gallotia, gigantism, Holocene, Serinus, Serinus canaria, subfossil lizards
Abstract:Abstract In the Canary Islands five extant and two extinct giant lacertid lizards belonging to the endemic genus Gallotia are known. A comparative study of the living and subfossil specimens from the Western Canary Islands demonstrates that the extinct giant species Gallotia goliath and Gallotia maxima are synonymous with the living Gallotia simonyi. Characters formerly used in the diagnosis of the extinct species and subspecies fall within the range of intraspecific variation (ontogenetic and individual) of the living species. The only significant difference between living and subfossil populations of G. simonyi is size, and there is strong evidence to suggest that the reduction in size in living populations reflects shorter life expectancy, a factor that should be taken into account in the current conservation projects on this species.
URL:http://dx.doi.org/10.1111/j.1469-7998.2000.tb00781.x
Short Title:Journal of Zoology
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