| Authors |
Volodymyr M. Kucherenko, Ph.D., Senior Lecturer, department of Forestry and landscape gardening, V.I. Vernadsky Crimean Federal University (295492, Crimea Republic, settlement Agrarnoe, Simferopol); e-mail: zookuch@ukr.net
Nikolay N. Tovpinets, biologist, Centre of Hygiene and Epidemiology in Crimea and in the Municipal City Sevastopol Rospotrbebnadzor (295034, Crimea Republic, Simferopol, Naberezhbaya street, 67); e-mail: zootonik@gmail.com
Angelina V. Slavinskaya, student of faculty of biology and chemistry, V.I. Vernadsky Crimean Federal University (295492, Crimea Republic, Simferopol, Prospekt Vernadskogo, 4); e-mail: alina.slav.98@mail.ru
Sergey N. Yakunin, zoologist in the Plague Control Station in the Republic of Crimea Rospotrbebnadzor (295023, Crimea Republic, Simferopol, Promyshlennaya street, 42); e-mail: yakunin.80@list.ru
Irina S. Kovalenko, zoologist in the Plague Control Station in the Republic of Crimea Rospotrbebnadzor (295023, Crimea Republic, Simferopol, Promyshlennaya street, 42); e-mail: kis_80_05@mail.ru |
| Abstract |
The range of Tyto alba overlaps with that of Asio otus in a large part of the Holarctic. Both species are adapted to open-area hunting and prey upon similar species. In contrast to A. otus, data about the diet of T. alba on Crimea and surroundings are extremely scarce. Our study aimed to describe the prey spectrum of T. alba and evaluate at what extant its diet overlaps to that of A. otus. We evaluated diets based on 48 pellets of T. alba and 88 of A. otus collected from January to March 2018 in the Western part of the Crimea Peninsula. Simultaneously, we assessed the availability of small mammal prey by installing 150 spring-loaded bar mousetraps around the collection sites. Small mammals were the main prey in the diet of T. alba and A. otus (99.2% and 100% of all individuals in pellets). The most consumed species of both species was Microtus socialis (52.3% and 74.4% of all individuals). The second most consumed species of T. alba was Crocidura leucodon, an endangered species in Crimea. The diet of T. alba was more diverse than that of A. otus (Shannon diversity Index: 1.1 and 0.76, Simpson Index: 0.51 and 0.31, respectively). However, their diets overlapped widely (Pianka's index = 0.94). The frequency of mammalian prey in traps correlated moderately with that in A. otus pellets (rs = 0.5, p < 0.2), and it deviated from the frequency of mammalian prey in T. alba pellets (rs = -0.05, p < 0.9). The presence of the endangered C. leucodon in the diet of T. alba reinforce the utility of this predator species as a tool to detect threatened or rare small mammals that are not caught by traps and to increase information about their geographical distribution. |
| References |
Alatalo R.V. 1981. Problems in the measurements of evenness in ecology. Oikos 37(2): 199–204. DOI: 10.2307/3544465
Alivizatos H. 1999. Winter diet of the Barn Owl (Tyto alba) and Long-Eared Owl (Asio otus) in Northeastern Greece: a comparison. Journal of Raptor Research 33(2): 160–163.
Avery D.M., Avery G., Palmer N.G. 2005. Micromammalian distribution and abundance in the Western Cape Province, South Africa, as evidenced by Barn owls Tyto alba (Scopoli). Journal of Natural History 39(22): 2047–2071. DOI: 10.1080/00222930500044631
Bashta A.T.V., Bokotey A.A. 2009. Barn Owl Tyto alba (Scopoli, 1769). In: I.I. Akimov (Eds.): Red Data Book of Ukraine. Animals. Kyiv: Globalconsalting. P. 470. [In Ukrainian]
Beskaravayny M.M. 2015. Tyto alba (Scopoli, 1769). In: S.P. Ivanov, A.V. Fateryga (Eds.): Red Data Book of the Republic of Crimea. Simferopol: IT ARIAL. P. 354. [In Russian]
Evstafiev I.L. 2016. Results of a 30-Years-Long Investigation of Small Mammals in Crimea. Part 2. Ecology of Species. Proceedings of the Theriological School 14: 103–120. DOI: 10.15407/ptt2016.14.103 [In Russian]
Fesenko G.V., Bokotey A.A. 2002. Birds of the fauna of Ukraine (field guide). Kyiv: Ukrainian society of bird protection. 416 p. [In Ukrainian]
Gromov I.M. 1995. Rodentia. In: The mammals of Russia and adjacent territory. St. Petersburg: Russian Academy of Science. P. 58–501. [In Russian]
Hammer Ø., Harper D.A.T., Ryan P.D. 2001. PAST: Paleontological Statistics Software Package for Education and Data Analysis. Palaeontologia Electronica 4(1): 1–9.
Holt D.W., Lyon J.L., Hale R. 1987. Techniques for differentiating pellets of Short-eared Owls and Northern Harriers. The Condor 89: 929–931.
Ilyukh M.P., Khokhlov A.N. 2010. Birds of Prey and Owls of transformed ecosystems of the Caucasus. Stavropol: SevCauGTU. 760 p. [In Russian]
Khalafalla S.M., Iudica C.A. 2010. Barn and Long-Eared Owl Diets: A Comparative Study from Central Pennsylvannia and a Key for Identification of Prey Items. Northeastern Naturalist 17(1): 147–154. DOI: 10.1656/045.017.0112
Kitowsky I. 2013. Winter diet of the Barn Owl (Tyto alba) and the Long-eared Owl (Asio otus) in Eastern Poland. North-Western Journal of Zoology 9(1): 16–22.
Koshelev A.I., Belashkov I.D. 2002. The first flight of Barn Owl (Tyto alba alba) into Melitopol region in winter 2002. Branta: Transactions of the Azov-Black Sea Ornithological Station 5: 146–149. [In Russian]
Kryštufek B., Vohralik V. 2009. Mammals of Turkey and Cyprus. Rodentia II: Cricetinae, Muridae, Spalacidae, Calomyscidae, Capromyidae, Hystricidae, Castoridae. Slovenia, Koper: University of Primorska. 372 p.
Kucherenko V.M., Prokopenko S.P., Zherebtsova T.A., Zherebtsov D.Yu. 2017. Observations of rare bird species in the Crimea in 2013–2017. Berkut 26(1): 1–4. [In Ukrainian]
Kucherenko V., Kalinovsky P. 2018. Winter Roost Tree Selection and Phenology of the Long-Eared Owl (Asio otus) in Crimea. Diversity 10(4): 105. DOI: 10.3390/d10040105
Leader Z., Yom-Tov Y., Motro U. 2010. Diet comparison between two sympatric Owls – Tyto alba and Asio otus – in the Negev Desert, Israel. Israel Journal of Ecology and Evolution 56(2): 207–216. DOI: 10.1560/IJEE.56.2.207
Magurran A.E. 2004. Measuring Biological Diversity. UK: Blackwell Publishing. 256 p.
Panteleev P.A., Terekhina A.N., Varshavsky A.A. 1990. Ecogeographic variation in rodents. Moscow: Nauka. 374 p. [In Russian]
Petrovici M., Molnar P., Sándor A.D. 2013. Trophic niche overlap of two sympatric owl species (Asio otus Linnaeus, 1758 and Tyto alba Scopoli, 1769) in the North-Western part of Romania. North-Western Journal of Zoology 9(2): 250–256.
Pesenko Yu.A. 1982. Principles and Methods of Quantities Analyses in Faunistic Research. Moscow: Nauka. 287 p. [In Russian]
Prokopenko S.P., Beskaravayny M.M. 2009. New data about distribution of the Barn Owl Tyto alba (Scop.): Tytonidae, Strigiformes in the Crimea. Branta: Transactions of the Azov-Black Sea Ornithological Station 12: 167–169. [In Russian]
Ronald M.N., Walker E.P. 2005. Walker's carnivores of the world. Baltimore and London: JHU Press. 313 p.
Svensson L. 2010. Collins Bird Guide. 2nd edition. Italy: Trento. 448 p.
Tovpinets N.N. 2015. Crocidura leucodon Hermann, 1870. In: S.P. Ivanov, A.V. Fateryga (Eds.): Red Data Book of the Republic of Crimea. Simferopol: IT ARIAL. P. 367. [In Russian]
Tovpinets N.N., Evstaf'ev I.L. 2013. Small mammals in the winter diet of Long-eared Owl (Asio otus) from the Crimea: ecological and epizootological aspects. Berkut 22(2): 113–121. [In Russian]
Volkov S.V., Sharikov A.V., Basova V.B., Grinchenko O.S. 2009. Influence of small mammals abundance on the number and selection of habitats by Long-eared (Asio otus) and Short-eared (Asio flammeus) Owls. Zoologicheskii Zhurnal 88(10): 1248–1257. [In Russian]
Zubkov N.I. 2005. Barn Owl Tyto alba (Scopoli, 1769). In: V.T. Butyev, N.I. Zubkov, V.P. Ivanchev (Eds.): Birds of Russia and adjacent regions: Strigiformes, Caprimulgiformes, Apodiformes, Coraciiformes, Upupiformes, Piciformes. Moscow: KMK Scientific Press Ltd. P. 99–106. [In Russian]
Yom-Tov Y., Wool D. 1997. Do the contents of Barn Owl pellets accurately represent the proportion of prey species in the field? The Condor 99: 972–976. |
