abstract |
The article presents the results of a comprehensive craniological analysis of samples of the common raccoon dog (Nyctereutes procyonoides Gray 1834) based on skulls from four samples, three of which comprise materials from Ukraine, are presented: 1) central and northern oblasts of Ukraine (Kyiv, Chernihiv, and Cherkasy oblasts); 2) eastern oblasts of Ukraine (Luhansk, Zaporizhzhia, and Poltava oblasts); 3) southern oblasts of Ukraine (Kherson Oblast), as well as a sample that includes materials from the native range of the species (Khabarovsk Krai, Primorsky Krai, and Chita Oblast of Russia). The research included standard analysis based on craniometric measurements of 19 parameters (15 skull measurements and 4 mandibular measurements), and analysis of the skull shape by tools of geometric morphometrics separately for the dorsal and ventral sides of the skull and the buccal surface of the left mandible. The total sample comprised 63 specimens. The results of the analysis of linear characters showed that specimens from the northern, central, and southern oblasts of Ukraine differ from those from the eastern oblasts of Ukraine and the native range of the common raccoon dog (eastern regions of Russia), the latter being characterised by larger dimensions. The analysis of shape differences using MorphoJ demonstrates the greatest morphological distance between the samples from the territory of Ukraine and the sample from the species’ native range. The analysis of the dorsal and ventral surfaces of the skulls showed that the specimens from the native range of the common raccoon dog have more elongated and broader nasal bones, while the braincase is narrowed from the sides, but elongated towards the occipital bones. The greatest level of shape variation is characteristic of the mandible. Specimens from the territory of Ukraine have a more elongated mandibular base and a larger area of the coronal, articular, and angular processes, while skulls from the species’ native range have a larger angle between the mandibular base and the coronal process, which, in turn, has a greater inclination relative to the articular process, and a smaller area of the angular process. |
references |
Boitani, L. 2018. Canis lupus. The IUCN Red List of Threatened Species 2018: e.T3746A133234888. 2021. https://10.2305/IUCN.UK.2018-2.RLTS.T3746A133234888.en
De Marinis, A. M., A. Asprea. 2006. Hair identification key of wild and domestic ungulates from southern Europe. Wildlife Biology, 12: 305–320. https://doi.org/10.2981/0909-6396(2006)12[305:HIKOWA]2.0.CO;2
Gubar, Y. P. 1987. Methodological Recommendations for Wolf Census Using Mapping Habitat Areas. Moscow,1–29. [Russian]
Jacobs, J. 1974. Quantitative measurement of food selection. A modification of the forage ratio and Ivlev's selectivity index. Oecologia, 14: 413–417. https://doi.org/10.1007/BF00384581
Jaroszewicz, B., K. Nowak, M. Żmihorski. 2021. Poland's border wall threatens ancient forest. Science, 374: 1063. https://doi.org/10.1126/science.abn0451
Jedrzejewska B., H. Okarma, W. Jedrzejewski, L. Milkowski. 1994. Effects of exploitation and protection on forest structure, ungulate density and wolf predation in Bialowieza primeval forest, Poland. Journal of Applied Ecology, 31 (4): 664–676. https://doi.org/10.2307/2404157
Jędrzejewska, B., W. Jędrzejewski. 1998. Predation in Vertebrate Communities. The Białowieża Primeval Forest as a case study. Springer, Berlin, 1–452. https://doi.org/10.1007/978-3-662-35364-6
Jędrzejewski, W., K. Schmidt, J. Theuerkauf, [et al.]. 2002. Kill rates and predation by wolves on ungulate populations in Białowieża Primeval Forest (Poland). Ecology, 83: 1341–1356. https://doi.org/10.1890/0012-9658(2002)083[1341:KRAPBW]2.0.CO;2
Jędrzejewski, W., M. Niedziałkowska, M. W. Hayward, [et al.]. 2012: Prey choice and diet of wolves related to ungulate communities and wolf subpopulations in Poland. Journal of Mammalogy, 93: 1480–1492. https://doi.org/10.1644/10-MAMM-A-132.1
Kozlo, P. G., E. B. Banad. 1985. Belarus. In: Bibikov, D. I. (ed.). Wolf. Origin, Systematics, Morphology, and Ecology. Nauka, Moscow, 483–487. [Russian]
Lavrovsky, V. V. 1990. Wolf diet and its importance in the territory of the Oka Biosphere Reserve. In: Long-Term Dynamics of Natural Objects of the Oka Biosphere Reserve. Moscow, 53–109. [Russian]
Levins, R. 1968. Evolution in Changing Environments. Princeton University, Princeton, 1–122.https://doi.org/10.1515/9780691209418
Mysłajek, R. W., M. Romański, I. Kwiatkowska, [et al.]. 2021. Temporal changes in the wolf Canis lupus diet in Wigry National Park (northeast Poland). Ethology Ecology & Evolution, 33 (6): 628–635. https://doi.org/10.1080/03949370.2021.1907787
Mysłajek, R. W., P. Stachyra, M. Figura, M. Nędzyńska-Stygar, R. Stefański, [et al.]. 2022. Diet of the grey wolf Canis lupus in Roztocze and Solska Forest, south-east Poland. Journal of Vertebrate Biology, 71 (22040): 1–12. https://doi.org/10.25225/jvb.22040
Nowak, S., R. W. Mysłajek, B. Jędrzejewska. 2005. Patterns of wolf Canis lupus predation on wild and domestic ungulates in the western Carpathian Mountains (S Poland). Acta Theriologica, 50: 263–276. https://doi.org/10.1007/BF03194489
Nowak, S., M. Szewczyk, K. M. Stępniak, I. Kwiatkowska, K. Kurek, R. W. Mysłajek. 2024. Wolves in the borderland — changes in population and wolf diet in Romincka Forest along the Polish-Russian-Lithuanian state borders. Wildlife Biology, 2024 (6): e01210. https://doi.org/10.1002/wlb3.01210
Pejsak, Z., K. Tarasiuk. 2022. Eight years of African swine fever in Poland. Medycyna Weterynaryjna, 78 (10): 481–488. https://doi.org/10.21521/mw.6680
Rukovsky, N. N. 1985. Diet. In: Bibikov, D. I. (ed.). Wolf. Origin, Systematics, Morphology, and Ecology. Nauka, Moscow, 325–336. [Russian]
Sabaneev, L. P. 1877. Wolf. Priroda, No. 2: 331. [Russian]
Sidorovich, V., A. Schnitzler, C. Schnitzler, [et al.]. 2017. Responses of wolf feeding habits after adverse climatic events in central-western Belarus. Mammalian Biology, 83: 1–7. https://doi.org/10.1016/j.mambio.2016.11.012
Valdmann, H., U. Saarma. 2020. Winter diet of wolf (Canis lupus) after the outbreak of African swine fever and under the severely reduced densities of wild boar (Sus scrofa). Hystrix, 31: 154–156.
Voronetsky, N. N., V. F. Dunin, V. S. Piskunov, K. M. Kireenko. 1999. Daily activity and feeding of the wolf in the Polesie State Radiation and Ecological Reserve. Biological rhythms. Proceedings of the scientific and practical conference. Brest, 65–67. [Russian]
Woźniakowski, G., Z. Pejsak, A. Jabłoński. 2021. Emergence of African swine fever in Poland (2014–2021). Successes and Failures in Disease Eradication. Agriculture, 11: 738. https://doi.org/10.3390/agriculture11080738
Zhyla, S. M. 2009. The wolf and his victims. In: Zhyla, S. S. The wolf (Canis lupus L., 1758) in the Polissian Nature Reserve and Its Surroundings: Monitoring, Spatial Structure, Ecology, and Management. Selezivka, 85–141. [Ukrainian]
Zhyla, S. 2023a. The elk (Alces alces) at the southern limit of its geographic range: population status in the Central Polissia, wolf predation, and vulnerability to climate warming. Theriologia Ukrainica, 25: 173–186. [Ukrainian] http://doi.org/10.53452/TU2514
Zyla, S. 2023b. The wolf (Canis lupus) and scavengers of the north of the Central Polissia. In: Preservation of biological and landscape diversity in nature reserves. Kaniv Nature Reserve, Kaniv, 74–81. [Ukrainian] |