A Comparative Study of Intra- and Inter-Population Variation in Two Sympatric Lizards, Lacerta agilis boemica and L. strigata in Daghestan

Evgeny S. Roytberg

Abstract


Using methods of statistical analysis, the extent of morphological inter- and intra-population variation in two sympatric lizard species (Lacerta agilis boemica and L. strigata) from the North Caucasus (Daghestan) was compared. 1042 specimens from 7 localities of lowland and foothill Daghestan were scored for 8 pholidotic features and 22 characters of head scutellation. The occurrence of evident differences in the extent of the interpopulation variation was revealed: the latter is higher in L. agilis as compared with L. strigata from the same localities. Two factors are proposed to be responsible for this difference: a) gene flow among populations which seems to be more intense in L. strigata and b) developmental homeostasis which seems to be higher in L. strigata if compared with L. agilis.

Keywords


lacertids, pholidosis, head scutellation, variability

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References


Arnold E. N. (1989), «Towards a phytogeny and biogeography of the Lacertidae: relationships within an Old-World family of lizards derived from morphology,» Bull. Br. Mus. (Nat. Hist.), 25(2), 203 – 257.

Bischoff W. (1988), «Zur Verbreitung und Systematik der Zauneidechse, Lacerta agilis Linnaeus 1758,» Mertensiella (Suppl. to Salamandra Bonn), 1, 11 – 30.

Brown R. P. and 0 (1993), «Population differentiation in scalation of the Iberian rock lizard (Lacerta monticola Boulenger, 1905),» J. Zool. (Lond.), (in press).

Darevsky I. S. (1967), Rock Lizards of the Caucasus, Nauka, Leningrad [in Russian].

Darevsky I. S. (1984), «Lacerta strigata Eichwald 1831 — Kaspische Smaragdeidechse,» in: W. Böhme (ed.), Handbuch der Reptilien und Amphibien Europas, Band 2/1, Echsen II, AULA Verlag, Wiesbaden, pp. 82 – 99.

Darevsky I. S., Szczerbak N. N., and Peters G. (1976), «Systematics and intraspecific structure,» in: A. V. Yablokov (ed.), The Sand Lizard: A Monographic Description of the Species, Nauka, Moscow, pp. 53 – 95 [in Russian].

Dobzhansky Th. (1970), Genetics of the Evolutionary Process, Columbia Univ. Press, New York.

Ehrlich P. R and Raven P. H. (1969), «Differentiation of populations,» Science, 165(3899), 1228 – 1232.

Endler J. A. (1977), Geographic Variation, Speciation, and Clines, Princeton Univ. Press, New York.

Gosá A., Jover L, and Bea A. (1986), «Contribución a la taxonomía de Podarcis muralis (Laurenti, 1768) y P. hispanica Steindachner, 1870 en la Península Ibérica (Pais Vasco y Sistema Central),» Munibe (Ciencias Naturales), San Sebastian, 38, 109 – 120.

Grant V. (1985), «The problem of gene flow on a geographic scale,» Zh. Obshch. Biol., 46(1), 20 – 31 [in Russian].

Jackson J. F. and Pounds J. A. (1979), «Comments on assessing the dedifferentiating effect of gene flow,» Syst. Zool., 28(1), 78 – 85.

Mayr E. (1970), Populations, Species, and Evolution, Harvard Univ. Press, Cambridge (Mass.).

Martinez Rica J. P. and Laplaza E. (1989), «Variaciones morphometricas y de folidosis en poblaciones vecinas de Podarcis hispanica y P. muralis (Reptilia, Sauria), y su relacion con la altitud,» Rev. Esp. Herpetol., 3(2), 159 – 172.

Melkumyan L. S. (1987), «An analysis of variation of meristic scale characters in foothill and high-mountain populations of Lacerta strigataBiol. Zh. Armenii, 40(9), 754 – 760 [in Russian].

Metter D. E. and Pauken R. J. (1969), «An analysis of the reduction of gene flow in Ascaphus trueiCopeia, 2, 301 – 307.

Orlova V. F. (1975), Systematics and Some Ecological and Morphological Peculiarities of the Wood Lizards of the Genus Lacerta. Author’s Abstract of Candidate’s Thesis, Izd. MGU, Moscow [in Russian].

Peters G. (1962), «Studien zur Taxionomie, Veibreitung und Ökologie der Smaragdeidechsen. I. Lacerta trilineata, viridis, and strigata als selbstandige Arten,» Mitt. Zool. Mus. Berlin, 38(1), 127 – 152.

Peters G. (1964), «Studien zur Taxionomie, Verbreitung und Ökologie der Smaragdeidechsen. III. Die orientalische populationen von Lacerta trilineataMitt. Zool. Mus. Berlin, 40(2), 185 – 250.

Pounds J. A. and Jackson J. K. (1981), «Riverine barriers to gene flow and the differentiation of fence lizard populations,» Evolution, 35(3), 516 – 528.

Rees J. W. (1970), «A multivariate morphometric analysis in scull morphology among geographically contiguous and isolated groups of the white-tailed deer (Odocoileus virginianus) in Michigan,» Evolution, 24(2), 220 – 229.

Roytberg E. S. (1982), «Evaluation of the possibility of hybridization between Lacerta agilis and L. strigata (Sauria, Lacertidae) in Daghestan,» Zool. Zh., 61(2), 249 – 253 [in Russian].

Roytberg E. S. (1987), «Discrete variants of scutellation in the lizards Lacerta agilis and L. strigata from Daghestan,» Trudy Zool. Inst. Akad. Nauk SSSR (Leningrad), 158, 131 – 138 [in Russian].

Roytberg E. S. (1989), Variation of Scalation Characters in Lacerta agilis L. and L. strigata Eichw. in an Area of Their Sympatry. Author’s Abstract of Candidate’s Thesis, Izd. Dag. Gos.Univ., Makhachkala [in Russian].

Roytberg E. S. (1991), «Variation of head shield pattern in lizards of the genus Lacerta (Sauria, Lacertidae): trends and constraints,» Zool. Zh., 70(4), 85 – 96 [in Russian].

Salvador A. (1985), Guia de Campo de los Anfibos y Reptiles de la Peninsula Iberica, Islas Baleares y Canarias, Santiago Garcia Editor, Leon.

Schmalhausen I. I. (1969), Problems of the Darwinism, Nauka, Leningrad [in Russian].

Schmidtler J. F. (1975), «Zur Taxionomie der Riesen-Smaragdeidechsen (Lacerta trilineata Bedriaga) Siid Anatoliens (Reptilia, Lacertidae),» Veröff. Zool. Staatsaml. München, 18, 45 – 68.

Schmidtler J. F. (1986), «Orientalische Smaragdeidechsen: I. Zur Systematik und Verbreitung von Lacerta viridis in der Türkei (Sauria, Lacertidae),» Salamandra (Bonn), 22(4), 242 – 258.

Thorpe R. S. (1979), «Multivariate analysis of population systematics of the ringed snake, Natrix natrix (L),» Proc. Roy. Soc. Edinburgh, 78B, 1 – 62.

Thorpe R. S. (1985), «Extent of racial divergence in the eastern Canary lizard, Gallotia atlanticaBonn. Zool. Beitr., 36(3/4), 507 – 512.

Vasiliev A. G. (1984), «Isolation by distance and differentiation of populations,» Zh. Obshch. Biol., 45(2), 164 – 176 [in Russian].

Yablokov A. V., Baranov A. S., and Rozanov A. S. (1980), «Population structure, geographic variation, and microphylogenesis of the sand lizard (Lacerta agilis),» in: M. K. Hecht, W. C. Steere, and B. Walles (eds.), Evolutionary Biology, Vol. 12, Plenum, New York – London, pp. 91 – 127.

Zakharov V. M. (1987), Asymmetry of Animals, Nauka, Moscow [in Russian].

Zweifel R. G. (1965), «Variation and distribution of the unisexual lizard Cnemidophorus tesselatusAm. Mus. Novitiates, No. 2235, 1 – 49.




DOI: http://dx.doi.org/10.30906/1026-2296-2019-1-%25s-77-85

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