Skip to main content
Log in

Morphometric variations of the skull in the Gray Wolf (Canis lupus) in Iran

  • Original paper
  • Published:
Acta Theriologica Aims and scope Submit manuscript

Abstract

The Gray Wolf is a wide ranging carnivore in Iran, absent only in the central deserts and Dasht-e Lut. This study was carried out to verify whether, despite their high mobility, individual wolves belonging to different populations show morphological variations in the skull. We collected 48 skulls from various regions of Iran and measured 24 variables on the cranium. These primary variables were then used to generate six indices to examine any variations in the shape of the skulls collected in different regions of the country. Although the largest skulls collected for this study originated in the mountainous regions of the northwest, northeast, and west, principle component analysis (PCA) did not result in a meaningful difference in the size and shape of wolf skulls in different regions of Iran. Our results confirm that the minor morphological variations of the skull in wolves of Iran are not an evidence for the separation of wolf populations in different regions or the existence of various subspecies in the country. This uniformity can be explained by the strong gene flow among populations as well as high mobility of the wolf that facilitates movement of individuals between populations.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7

Similar content being viewed by others

References

  • Allendorf FW (1983) Isolation, gene flow and genetic differentiation among populations. In: Schonewald-Cox CM, Chambers SM, MacBryde B, Thomas WL (eds) Genetics and conservation: a reference for managing wild plant and animal populations. Ben jamin/Cummings, New York, pp 51–66

    Google Scholar 

  • Darroch JN, Mosimann JE (1985) Canonical and principal component of shape. Biometrika 72:241–252

    Article  Google Scholar 

  • Forbes SH, Boyd DK (1997) Genetic structure and migration in native and reintroduced Rocky Mountain wolf populations. Conserv Biol 11:1226–1234

    Article  Google Scholar 

  • Gipson PS, Warren BB, Ronald MN, Mech LD (2000) Accuracy and precision of estimating age of gray wolves by tooth wear. J Wildl Manage 64:752–758

    Article  Google Scholar 

  • International Wolf Center (2012) Teaching the World about Wolves. [On line] [July 05th 2012]. Available at: URL: http://www.wolf.org/wolves/learn/wow/regions/Asia/Iran.asp

  • Khosravi R, Kaboli M, Rezaei, HR, Montazemi SH (2012) Evaluation of genetic variability in Iranian wolf (Canis lupus pallipes) and free-ranging dog (C. familliaris) populations using microsatellite markers. J Novin Genetics (in press)

  • Klingenberg CP (2009) Morphometric integration and modularity in configurations of landmarks: tools for evaluating a priori hypotheses. Evol Dev 11:405–421

    Article  PubMed  Google Scholar 

  • Klingenberg CP, Mcintyre GS (1998) Geometric morphometrics of developmental instability: analyzing patterns of fluctuating asymmetry with Procrustes methods. Evolution 52:1363–1375

    Article  Google Scholar 

  • Mech LD (1970) The wolf: the ecology and behavior of an endangered species. Natural History Press, Doubleday Publ. Co.

  • Mech LD, Boitani L (2004) Grey wolf. In: Sillero-Zubiri C, Hoffmann M, Macdonald DW (eds) Status survey and conservation action plan canids: foxes, wolves, jackals and dogs. IUCN, Gland, pp 124–129

    Google Scholar 

  • Milenković M (1997) Taxonomic–biogeographic status and ecological/economical significance of the wolf (Canis lupus Linnaeus 1758) in Yugoslavia. Ph.D. dissertation, University of Belgrade,Belgrade, Serbia.

  • Milenković M, Habijan-Mikes V, Matic R (2006) Cases of spontaneous interbreeding of wolf and domestic dog in the region of southeast Banat (Serbia). Arch Biol Sci 5:225–231

    Article  Google Scholar 

  • Milenković M, Joji V, Blagojevi J, Tatovi S, Vujoševi M (2010) Skull variation in Dinaric–Balkan and Carpathian gray wolf populations revealed by geometric morphometric approaches. J Mammal 91:376–386

    Article  Google Scholar 

  • Mosimann JE (1987) Multivariate analysis of size and shape: modeling with the Dirichlet distribution. In computer science and statistics: Proc. 19thSymp. On the interface, Philadelphia, pp 1–9

    Google Scholar 

  • Nowak RM, Federoff NE (2002) The systematic status of the Italian wolf Canis lupus. Acta Theriol 47:333–338

    Article  Google Scholar 

  • Okarma H, Buchalczyk T (1993) Craniometrical characteristics of wolves Canis lupus from Poland. Acta Theriol 38:253–262

    Google Scholar 

  • Onar V, Özcan S, Pazvant G (2001) Skull typology of adult male kangal dogs. Anat Histol Embryol 30:41–48

    Article  PubMed  CAS  Google Scholar 

  • Onar V, Belli O, Owen PR (2005) Morphometric examination of red fox (Vulpes vulpes) from the Van-Yoncatepe necropolis in eastern Anatolia. Int J Morphol 23(3):253–260

    Article  Google Scholar 

  • Paquet PC, Carbyn LN (2003) Gray wolf. In: Feldhamer GA, Thompson BC, Chapman JA (eds) Wild mammals of North America: biology, management, and conservation. Johns Hopkins University Press, pp 482–510.

  • Reist JD (1985) An empirical evaluation of several univariate methods that adjust for size variation in morphometric data. Can J Zool 63:1429–1439

    Article  Google Scholar 

  • Sykes WH (1831) Catalogue of the Mammalia of Dukun (Deccan); with observations on the habits, etc., and characters of new species. P Zool Soc Lond 1830–1831:99–106

    Google Scholar 

  • Thioulouse J, Chessel D, Doledec S, Olivier JM, Goreaud F, Pelissier R (2001) Ecological data analysis: exploratory and Euclidean methods in environmental sciences. http://pbil.univ-lyon1.fr/ADE-4.

  • Wayne RK (1992) Mitochondrial DNA variability of the gray wolf: genetic consequences of population decline and habitat fragmentation. Conserv Biol 6:559–569

    Article  Google Scholar 

  • Wozencraft WC (2005) Order carnivora. In: Wilson DE, Reeder DM (eds) Mammal species of the world: a taxonomic and geographic reference. Johns Hopkins University Press, Baltimore, pp 532–628

    Google Scholar 

  • Ziaei H (2009) A field guide to the mammals of Iran. Tehran, Iran

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to M. Kaboli.

Additional information

Communicated by: Mieczyslaw Wolsan

Appendix 1

Appendix 1

Table 6 Locality, abbreviations, and examine location of 48 Gray Wolf skulls

Rights and permissions

Reprints and permissions

About this article

Cite this article

Khosravi, R., Kaboli, M., Imani, J. et al. Morphometric variations of the skull in the Gray Wolf (Canis lupus) in Iran. Acta Theriol 57, 361–369 (2012). https://doi.org/10.1007/s13364-012-0089-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s13364-012-0089-6

Keywords

Navigation