Diet composition of the Long-eared Owl (Asio otus) in the Eastern Anatolia (Turkey)

Selçuk, Ahmet Yesari; Özkoç, Ömral Ünsal; Bilir, Mehmet Akif; Kefelioğlu, Haluk

doi:10.18182/tjf.515832

Cited by 4 publications

(2 citation statements)

References 18 publications

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“…Microtus sp. was the main prey in both winter diet determined in the present study (F=64.62%) and summer diet of the previous study performed in Selim district in Kars (F=81.63%) (Selçuk et al 2019). However, when the population density of Microtus species in the hunting area is low or if they are completely absent, Apodemus or Mus spp.…”

Section: Discussionsupporting

confidence: 66%

DIET COMPOSITION OF THE WINTERING Asio otus L. (STRIGIFORMES: STRIGIDAE) IN TWO DIFFERENT HABITAT TYPES IN TURKEY

Selçuk

Özkoç

Bal

et al. 2021

Trakya University Journal of Natural Sciences

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In this study, we analysed a total of 691 pellets of the Long-eared Owl (Asio otus L.) collected from Edirne (Suburban), İstanbul (Suburban) and Kars (High altitude steppe) provinces in January-February 2019. Dietary contents of the Long-eared Owl were considering the different habitat (steppe and suburban) types. Small mammals constituted the majority of the diet content in all areas, but a small amount of bird remains were also found in pellets. 1474 prey items belonging to 7 different mammal taxa (Apodemus sp., Cricetulus sp., Crocidura sp., Micromys sp., Microtus sp., Mus sp., Rattus sp.) were identified. High amount of Mus sp. was found in pellets collected from Edirne (50.34%) and İstanbul (41.42%). On the other hand, Microtus sp. was the main prey species in Kars. Overall, our study supported that the Long-eared Owl acts as an opportunistic predator and change its dietary contents according to different environmental conditions. Incompatible results were obtained between the trapping study and pellet examination. The reasons could be that some mammal species can be caught by chance, trapping area cannot represent the entire hunting area and some mammal species could avoid trapping.Özet: Bu çalışmada, Ocak-Şubat 2019'da Edirne (Suburban), İstanbul (Suburban) ve Kars (Dağ bozkırı) illerinden toplanan toplam 691 adet kulaklı orman baykuşu peleti analiz edilmiştir. Diyet içeriği farklı habitat türlerine (bozkır ve suburban) göre karşılaştırılmıştır. Küçük memeliler tüm alanlarda diyet içeriğinin çoğunu oluşturmaktadır, ayrıca peletlerde az miktarda kuş kalıntısı tespit edilmiştir. 7 farklı memeli taksonuna (Apodemus sp., Cricetulus sp., Crocidura sp., Micromys sp., Microtus sp., Mus sp., Rattus sp.) ait 1474 av belirlenmiştir. Edirne (%50,34) ve İstanbul'dan (%41,42) toplanan peletlerde yüksek miktarda Mus sp. tespit edilmiştir. Kars'tan toplanan peletlerde ise Microtus sp. ana av türüdür. Genel olarak, çalışmamız kulaklı orman baykuşunun fırsatçı bir avcı olarak beslendiğini ve diyet içeriğini farklı çevresel koşullara göre değiştirdiğini desteklemiştir. Kapanlama çalışması ile pelet analizi arasında uyumsuz sonuçlar elde edilmiştir. Bunun nedenleri, bazı memeli türlerinin tesadüfen yakalanabilmeleri, kapanlama alanının, baykuşun tüm avlanma alanını temsil edememesi ve bazı memeli türlerinin tuzaktan kaçınmaları olabilir.

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Section: Discussionsupporting

confidence: 66%

DIET COMPOSITION OF THE WINTERING Asio otus L. (STRIGIFORMES: STRIGIDAE) IN TWO DIFFERENT HABITAT TYPES IN TURKEY

Selçuk

Özkoç

Bal

et al. 2021

Trakya University Journal of Natural Sciences

Self Cite

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“…Harms and Eberhard, 2003;Grandi et al, 2018). Despite being mainly specialized on Microtus voles (Selçuk et al, 2019), long-eared owls may adapt their feeding habits in the urban environments of European cities (where they commonly overwinter (Lövy and Riegert, 2013;Mori and Bertolino, 2015) to the most profitable prey, i.e. black rats and birds (Mori and Bertolino, 2015).…”

Section: Introductionmentioning

confidence: 99%

'Some like it alien': predation on invasive ring–necked parakeets by the long–eared owl in an urban area

Mori

Malfatti²,

Louarn

et al. 2020

Anim. Biodiv. Conserv.

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Predation pressure by native species may limit the spread of alien invasive species, thus playing a pivotal role in the impact and implementation of management strategies. The ring–necked parakeet Psittacula krameri is one of the most widespread alien bird species in Europe, with nearly 70 established populations. Predators of this species include diurnal raptors, synanthropic corvids, and rodents. Here we report for the first time that long–eared owls Asio otus might have preyed upon parakeets in their night roosts. Analysis of 167 owl pellets showed that ring–necked parakeets made up over 10 % of the total volume of the diet of these owls in winter (32.93 % of absolute frequency), representing the most important prey species after murid rodents and passerine birds. Further studies are needed to investigate whether parakeet consumption by long–eared owls is only a local occurrence or whether it is widespread in European cities. If so, predation by long–eared owl may eventually lead to a form of parakeet control and may limit the impact of this introduced parakeet on native biodiversity.

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Mammalian Fauna of Samsun, Amasya, Tokat and Eskisehir Provinces and Conversation Status of Species (Classis: Mammalia)

Selçuk

Kefelioğlu

2020

Kahramanmaraş Sütçü İmam Üniversitesi Tarım Ve Doğa Dergisi

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Bu çalışmada Samsun, Amasya, Tokat ve Eskişehir illerinin memeli faunası araştırılmış ve belirlenen memeli türlerinin koruma statüleri belirtilmiştir. Samsun, Amasya, Tokat ve Eskişehir illerinde 2014-2016 yılları arasında arazi çalışması gerçekleştirilmiştir. Arazi çalışmaları sırasında, canlı hayvan yakalama kapanları, çukur tuzaklar, fotokapan, yuva alanları, hayvan dışkı ve izleri ve pelet içeriklerindeki (baykuş kusmukları) memeli hayvan kalıntılarından (kafatası ve çene kemikleri) faydalanılmıştır. Bu çalışmalar sonucunda Böcekçiller (Eulipotyphla), Kemiriciler (Rodentia), Tavşanlar (Lagomorpha), Etçiller (Carnivora) ve Çift Toynaklılar (Cetartiodactyla) takımları içerisinde sınıflandırılan Samsun ili için 47, Amasya ili için 32, Tokat ili için 49 ve Eskişehir ili için 34 memeli hayvan türü tespit edilmiştir.

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Diet composition of the Long-eared Owl (Asio otus) in the Eastern Anatolia (Turkey)

Cited by 4 publications

References 18 publications

DIET COMPOSITION OF THE WINTERING Asio otus L. (STRIGIFORMES: STRIGIDAE) IN TWO DIFFERENT HABITAT TYPES IN TURKEY

DIET COMPOSITION OF THE WINTERING Asio otus L. (STRIGIFORMES: STRIGIDAE) IN TWO DIFFERENT HABITAT TYPES IN TURKEY

'Some like it alien': predation on invasive ring–necked parakeets by the long–eared owl in an urban area

Mammalian Fauna of Samsun, Amasya, Tokat and Eskisehir Provinces and Conversation Status of Species (Classis: Mammalia)

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