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https://doi.org/10.48027/hnb.46.052

Craniometrical sexual dimorphism of the grey wolf (Canis lupus, Canidae, Carnivora) in Bulgaria


Katelina Uzunowa https://orcid.org/0009-0002-2807-4813; Blagoy Koychev https://orcid.org/0000-0003-0064-4183; Stanislava Peeva https://orcid.org/0000-0002-8325-0966; Evgeniy Raichev https://orcid.org/0000-0002-7531-7075; Nikolai Spassov https://orcid.org/0000-0002-2891-7457

2 May 2024 · volume 46 · (issue 5) · pp. 127–138 · PDF [full text]

Abstract: Cranial sexual dimorphism in grey wolf (Canis lupus Linnaeus, 1758) from Bulgaria has not been studied so far. Skulls from adult individuals from across the country were studied. Thirty-six parameters (35 craniodental measurements and a volumetric one) of each skull were measured. The Bulgarian wolf population exhibits weak craniodental sexual dimorphism, which is male-biased, as is typical in canids with a monogamous social system. However, the sexual dimorphism is more pronounced than in the studied more northern populations.

Keywords: canids, Canis lupus, cranium, male-biased, sexual dimorphism

References [33]

Benson-Amram S., Dantzer B., Stricker G., Swanson E., Holekamp K. 2016 Brain size predicts problem-solving ability in mammalian carnivores. Proceedings of the National Academy of Sciences 113 (9): 2532–2537.
Bidau C., Martinez P. 2016 Sexual size dimorphism and Rensch’s rule in Canidae. Biological Journal of the Linnean Society 119 (4): 816–830. https://doi.org/10.1111/bij.12848
Boitani L., Phillips M., Jhala Y. 2018 Canis lupus. 2021 IUCN Red List of Threatened Species. 2018:e.T3746A163508960. https://doi.org/10.2305/IUCN.UK.2018-2.RLTS.T3746A163508960.en
Chikachev R., Andreev M., Sudnitsyn D. 2017 Morphological characteristic of the wolf skull (Canis lupus) in the Amur region. Far East Agrarian Bulletin 1 (41): 50–56. (In Russian) https://doi.org/10.24411/1999-6837-2017-00036
Connallon T. 2015 The geography of sex-specific selection, local adaptation, and sexual dimorphism. Evolution 69 (9): 2333–2344. https://doi.org/10.1111/evo.12737
Dayan T., Wool D., Simberloff D. 2002 Variation and Covariation of Skulls and Teeth: Modern Carnivores and the Interpretation of Fossil Mammals. Paleobiology 28 (4): 508–526.
Erlinge S. 1979 Adaptive significance of sexual dimorphism in weasels. Oikos 33: 233–245.
Gittleman J., Van Valkenburgh B. 1997 Sexual Dimorphism in the Canines and Skulls of Carnivores: Effects of Size, Phylogeny, and Behavioural Ecology. Journal of Zoology 242: 97–117. https://doi.org/10.1111/j.1469-7998.1997.tb02932.x
Goodwin E., Ballard W. 1985 Use of Tooth Cementum for Age Determination of Gray Wolves. The Journal of Wildlife Management 49 (2): 313–316. https://doi.org/10.2307/3801522
Hell P., Paule L. 1982 Ergebnisse taxonomischer Untersuchungen des Wolfes (Canis lupus) in den slowakischen Karpaten. Folia zoologica 31: 255–270.
Hillis T., Mallory F. 1996 Sexual dimorphism in wolves (Canis lupus) of the Keewatin District, Northwest Territories, Canada. Canadian Journal of Zoology 74 (4): 721–725. https://doi.org/10.1139/z96-081
Kemp T.S. 2005 The origin and evolution of mammals. Oxford University Press, 331 pp.
Korablev N., Korablev M., Korablev P. Dikarev S. 2020 Intra-population polymorphism of sympatric Canids (Canis lupus, Vulpes vulpes, Nyctereutes procyonoides): craniometric data. Principles of the Ecology 36: 17–39. (In Russian) https://doi.org/10.15393/j1.art.2020.10482
Korablev N., Korablev P., Korablev M., Korablev A., Sedova N., Zinoviev, A. 2021 Craniometric variability of Canis lupus, Carnivora, Canidae in the centre of European Russia. Nature Conservation Research 6 (1). (In Russian) https://doi.org/10.24189/ncr.2021.008
Larter N., Nagy J., Bartareau T. 2012 Growth in Skull Length and Width of the Arctic Wolf: Comparison of Models and Ontogeny of Sexual Size Dimorphism. Arctic 65 (2): 207–213. https://doi.org/10.14430/arctic4201
Loy A., Genov P., Galfo M., Jacobone M.,Vigna Taglianti A. 2008 Cranial morphometrics of the Apennine brown bear (Ursus arctos marsicanus) and preliminary notes on the relationships with other southern European populations. Italian Journal of Zoology 75 (1): 67–75. https://doi.org/10.1080/11250000701689857
Macdonald D., Loveridge A., Atkinson R. 2004 Chapter 16: Jackals. A comparative study of side-striped jackals in Zimbabwe: the influence of habitat and congeners (pp. 255–270). In: Macdonals D., Sillero-Zubiri C. (eds) The Biology and Conservation of Wild Canids. Oxford University Press, New York.
Machado F. 2020 Selection and Constraints in the Ecomorphological Adaptive Evolution of the Skull of Living Canidae (Carnivora, Mammalia). The American Naturalist 196 (2):197–215. https://doi.org/10.1086/709610
McKenna M., Bell S. 1997 Classification of Mammals Above the Species Level. Columbia University Press, New York, 631 pp.
Morris J., Brandt E. 2014 Specialization for aggression in sexually dimorphic skeletal morphology in grey wolves (Canis lupus). Journal of Anatomy 225 (1): 1–11. https://doi.org/10.1111/joa.12191
Mulders R. 1997 Geographic Variation in the cranial morphology of the wolf (Canis lupus) in Northern Canada. M.Sc. Thesis, Laurentian University, Sudbury, 117 pp.
Novacek M. 1993 Patterns of diversity in the mammalian skull. In: Hanken J., Hall K. (eds) The skull. Vol. 2. The University of Chicago Press, pp. 438–545.
Okarma H., Buchalczyk T. 1993 Craniometrical characteristics of wolves Canis lupus from Poland. Acta Theriologica 38 (3): 253–262. https://doi.org/10.4098/AT.arch.93-21
Popov V., Sedefchev A. 2003 Bozainicite v Balgaria. Opredelitel. Geosoft EOOD, Sofia, 291 pp. (In Bulgarian)
Severtsov A., Kormylitsin A., Severtsova E., Yatsuk I. 2016 Functional differentiation of teeth in the wolf (Canis lupus, Canidae, Carnivora). Biology Bulletin 43 (9): 1271–1280. https://doi.org/10.1134/S1062359016110133
Simpson G. 1945 Principles of classification, and a classification of mammals. American Museum of Natural History 85.
Sol D., Bacher S., Reader S., Lefebvre L. 2008 Brain size predicts the success of mammal species introduced into novel environments. American Naturalist 172 (1): 63–71.
Spassov N. 2007 Carnivora, Artiodactyla, Cetacea. In: Miteva S., Mihova B., Georgiev K., Petrov B., Vansink D. (eds) The mammals, important for conservation in Bulgaria. Dutch Mammal Society VZZ, Arnhem, 328 pp.
Spiridonov G., Spassov N. 2011 Wolf, Canis lupus L., 1758. In: Red Data Book of Bulgaria, second edition, Bulgarian Academy of Sciences and Ministry of Environment and Waters. Sofia.
Trbojević I., Ćirović D. 2016 Sexual dimorphism and population differentiation of the wolf (Canis lupus) based on morphometry in the Central Balkans. North-Western Journal of Zoology 12 (2): 349–355.
Tryon C.A. 1951 The Use of Skull Measurements at the Subspecific Level in Mammalian Taxonomy, with Special Reference to Thomomys Talpoides. Journal of Mammalogy 32 (3): 313–318. https://doi.org/10.2307/1375663
Tsingarska E., Dimitrov K., Senior C., Kirova N. 2019 Main body measurements of wolves Canis lupus in Bulgaria and their relation to geographic variability and gender. Conference: European large carnivores: problems of small-sized populations, study on reproduction, and hassles of reintroduction programs, 15th–18th September 2014, Krasny Bor, Belarus. https://doi.org/10.13140/RG.2.2.18325.27369
Von den Driesch A. 1976 A guide to the measurement of animal bones from archeological sites. Peabody Museum of Archeology and Ethnology. Harvard University, Bulletin 1, 137 pp.

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Uzunowa K., Koychev B., Peeva S., Raichev E., Spassov N. 2024 Craniometrical sexual dimorphism of the grey wolf (Canis lupus, Canidae, Carnivora) in Bulgaria. Historia naturalis bulgarica 46: 127–138.

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