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title Small mammals in the diet of Barn owls, Tyto alba (Aves: Strigiformes) along the mid-Araguaia River in central Brazil
authors Rocha, RG; Ferreira, E; Leite, YLR; Fonseca, C; Costa, LP
author full name Rocha, Rita G.; Ferreira, Eduardo; Leite, Yuri L. R.; Fonseca, Carlos; Costa, Leonora P.
title Small mammals in the diet of Barn owls, Tyto alba (Aves: Strigiformes) along the mid-Araguaia River in central Brazil
nationality internacional
language English
document type Article
author keywords Agroecosystems; pellets; riverbanks; Rodentia
abstract We collected and analyzed 286 Barn owl, Tyto alba (Scopoli, 1769), pellets from two nests in different environments along the mid-Araguaia River in central Brazil. Our analyses revealed that these owls feed mainly on small mammals, especially rodents. Owls from the riverbanks at Fazenda Santa Fe had a more diverse diet, preying mainly on rodents that typically inhabit riparian grasslands - Holochilus sciureus Wagner, 1842 - and forests - Hylaeamys megacephalus (Fischer, 1814) and Oecomys spp., which probably also occur in forest borders or clearings. On the other hand, owls from an agroecosystem at Fazenda Lago Verde preyed mostly on rodent species common in these agrarian fields, Calomys tocantinsi Bonvicino, Lima & Almeida, 2003. Additionally, we compared small mammal richness estimates based on the analysis of owl pellets with estimates from live-trapping in the same areas. Owl pellets revealed two rodent species undetected by live traps - Euryoryzomys sp. and Rattus rattus (Linnaeus, 1758) - and four rodent species were trapped, but not found in owl pellets - Oecomys roberti Thomas, 1904, Pseudoryzomys simplex (Winge, 1887), Rhipidomys ipukensis Rocha, B.M.A. Costa & L.P. Costa, 2011, and Makalata didelphoides (Desmarest, 1817). Traps yielded higher species richness, but these two methods complement each other for surveying small rodents.
author address [Rocha, Rita G.; Ferreira, Eduardo; Fonseca, Carlos] Univ Aveiro, Dept Biol, P-3810193 Aveiro, Portugal; [Rocha, Rita G.; Leite, Yuri L. R.; Costa, Leonora P.] Univ Fed Espirito Santo, Lab Mastozool & Biogeog, Dept Ciencias Biol, BR-29043900 Vitoria, Espirito Santo, Brazil
reprint address Rocha, RG (reprint author), Univ Aveiro, Dept Biol, Campus Santiago, P-3810193 Aveiro, Portugal.
e-mail address rgrocha@ua.pt
researcherid number Costa, Leonora/G-4259-2011; Fonseca, Carlos/D-9744-2011; Ferreira, Eduardo/G-2291-2010; Leite, Yuri/D-4667-2009; Rocha, Rita/F-9845-2012
orcid number Fonseca, Carlos/0000-0001-6559-7133; Ferreira, Eduardo/0000-0003-0497-6118; Leite, Yuri/0000-0002-0248-8738; Rocha, Rita/0000-0002-4410-3648
funding agency and grant number Fundacao Ciencia e Tecnologia [SFRH/BD/24767/2005, SFRH/BD/23191/2005]; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, Brazil)
funding text We thank staff from Fazendas Santa Fe and Aguas do Papagaio, Fazenda Lago Verde, and Ecotropical for all their logistic support. Fieldwork was performed using Federal (Instituto Chico Mendes de Conservacao da Biodiversidade-ICMBio, permits 200/2006 and 14307-1) and State (Naturatins, permits: 019/2006 and 001/2008) conservation agency permits. RGR and EF were supported by two PhD grants from the Fundacao Ciencia e Tecnologia (Program POPHQREN, ref: SFRH/BD/24767/2005 and SFRH/BD/23191/2005, respectively). LPC and YLRL received grant and fellowship support from the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq, Brazil). We also thank three anonymous reviewers for their valuable comments on a previous version of this manuscript.
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cited reference count 42
times cited 12
total times cited count (wos, bci, and cscd) 18
publisher city CURITIBA
publisher address CAIXA POSTAL 19020, CURITIBA, PARANA 81531-980, BRAZIL
issn 1984-4670
29-character source abbreviation ZOOLOGIA-CURITIBA
iso source abbreviation Zoologia
publication date DEC
year published 2011
volume 28
issue 6
beginning page 709
ending page 716
digital object identifier (doi) 10.1590/S1984-46702011000600003
page count 8
web of science category Zoology
subject category Zoology
document delivery number 875XH
unique article identifier WOS:000299068000003
link http://www.scielo.br/pdf/zool/v28n6/03.pdf