Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)

Introduction. Many rodent species are important pests for agriculture and for urban areas. The long-eared owl is a predator that exerts constant pressure on rodent density. Material and methods. The studies were performed in the winters of 2011-2013 in the cities of Chisinau and Bacau, where 599 an...

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Autores principales:	Victoria NISTREANU, Dalia PARASCHIV, Alina LARION
Formato:	article
Lenguaje:	EN FR RO RU
Publicado:	Asociatia de Biosiguranta si Biosecuritate 2020
Materias:	asio otus urban environment trophic spectrum rodents microtus voles Medicine R Science Q
Acceso en línea:	https://doaj.org/article/55f5f937ab724e54a81ba3c21917d22d
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spelling	oai:doaj.org-article:55f5f937ab724e54a81ba3c21917d22d2021-12-02T18:23:09ZComparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)10.38045/ohrm.2020.1.082887-34582587-3466https://doaj.org/article/55f5f937ab724e54a81ba3c21917d22d2020-03-01T00:00:00Zhttps://journal.ohrm.bba.md/index.php/journal-ohrm-bba-md/article/view/32/19https://doaj.org/toc/2887-3458https://doaj.org/toc/2587-3466Introduction. Many rodent species are important pests for agriculture and for urban areas. The long-eared owl is a predator that exerts constant pressure on rodent density. Material and methods. The studies were performed in the winters of 2011-2013 in the cities of Chisinau and Bacau, where 599 and 82 pellets of Asio otus were collected, respectively. The prey items were identified from cranial bones extracted from pellets. Results. Long-eared owl’s diet in both sites consists of mammals and birds, with rodents being the dominant trophic component. The Microtus species were the main prey with an abundance ≥ of 70% in both sites. In Chisinau, a high proportion of Mus species was registered in the diet. The total biomass of prey constituted 43 953 g in Chisinau and 7 038 in Bacau. The highest biomass belongs to Microtus species, with 31 710 g and 5 220 g, respectively. The trophic niche width in Chisinau constituted 0.089 and varied monthly from 0.058 to 0.28. In Bacau, the WTNs were 0.134 and varied slightly among the study months. Conclusions. The rodents were the main trophic source and constituted ≥96% in both sites. The prey diversity was higher in Chisinau, which was due to a larger city territory and to a higher number of wintering long-eared owls. The close values of trophic niche width in Chisinau and Bacau confirmed the high hunting specialization of the long-eared owl.Victoria NISTREANUDalia PARASCHIVAlina LARIONAsociatia de Biosiguranta si Biosecuritatearticleasio otusurban environmenttrophic spectrumrodentsmicrotus volesMedicineRScienceQENFRRORUOne Health & Risk Management, Vol 1, Iss 1, Pp 50-57 (2020)
institution	DOAJ
collection	DOAJ
language	EN FR RO RU
topic	asio otus urban environment trophic spectrum rodents microtus voles Medicine R Science Q
spellingShingle	asio otus urban environment trophic spectrum rodents microtus voles Medicine R Science Q Victoria NISTREANU Dalia PARASCHIV Alina LARION Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)
description	Introduction. Many rodent species are important pests for agriculture and for urban areas. The long-eared owl is a predator that exerts constant pressure on rodent density. Material and methods. The studies were performed in the winters of 2011-2013 in the cities of Chisinau and Bacau, where 599 and 82 pellets of Asio otus were collected, respectively. The prey items were identified from cranial bones extracted from pellets. Results. Long-eared owl’s diet in both sites consists of mammals and birds, with rodents being the dominant trophic component. The Microtus species were the main prey with an abundance ≥ of 70% in both sites. In Chisinau, a high proportion of Mus species was registered in the diet. The total biomass of prey constituted 43 953 g in Chisinau and 7 038 in Bacau. The highest biomass belongs to Microtus species, with 31 710 g and 5 220 g, respectively. The trophic niche width in Chisinau constituted 0.089 and varied monthly from 0.058 to 0.28. In Bacau, the WTNs were 0.134 and varied slightly among the study months. Conclusions. The rodents were the main trophic source and constituted ≥96% in both sites. The prey diversity was higher in Chisinau, which was due to a larger city territory and to a higher number of wintering long-eared owls. The close values of trophic niche width in Chisinau and Bacau confirmed the high hunting specialization of the long-eared owl.
format	article
author	Victoria NISTREANU Dalia PARASCHIV Alina LARION
author_facet	Victoria NISTREANU Dalia PARASCHIV Alina LARION
author_sort	Victoria NISTREANU
title	Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)
title_short	Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)
title_full	Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)
title_fullStr	Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)
title_full_unstemmed	Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)
title_sort	comparative analysis of long-eared owl (asio otus) winter diet from two european cities – chisinau (republic of moldova) and bacau (romania)
publisher	Asociatia de Biosiguranta si Biosecuritate
publishDate	2020
url	https://doaj.org/article/55f5f937ab724e54a81ba3c21917d22d
work_keys_str_mv	AT victorianistreanu comparativeanalysisoflongearedowlasiootuswinterdietfromtwoeuropeancitieschisinaurepublicofmoldovaandbacauromania AT daliaparaschiv comparativeanalysisoflongearedowlasiootuswinterdietfromtwoeuropeancitieschisinaurepublicofmoldovaandbacauromania AT alinalarion comparativeanalysisoflongearedowlasiootuswinterdietfromtwoeuropeancitieschisinaurepublicofmoldovaandbacauromania
_version_	1718378095672557568

Comparative analysis of long-eared owl (Asio otus) winter diet from two european cities – Chisinau (Republic of Moldova) and Bacau (Romania)

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