Social Interactions between Two Owl Species Sometimes Associated with Intraguild Predation

Ardea

Jabi Zabala¹  Sonia Hidalgo¹  Ainara Azkona¹  Iñaki Gastillo¹  José Antonio Martínez³  Iñigo Zuberogoitia²  José Enrique Martínez⁴ 

[1] 3 Sociedad para el Estudio de las Aves Rapaces (SEAR), C/ Kart Marx 15, 4°F, 48950 Erandio, Bizkaia, Spain;1 Estudios Medioambientales Icarus s.l., Oficina Técnica, Apd. 106, E-48940 Leioa, Bizkaia, Spain 3 Sociedad para el Estudio de las Aves Rapaces (SEAR), C/ Kart Marx 15, 4°F, 48950 Erandio, Bizkaia, Spain;4 C/ Juan de la Cierva 43, El Campello, E-03560 Alicante, Spain;2 Departamento de Ecología e Hidrología, Universidad de Murcia, E-30100 Murcia, Spain

关键词: Tyto Alba;   

DOI  :  

学科分类：动物科学

来源: Nederlandse Ornithologische Unie/Netherlands Ornithological Union

【 摘 要 】

Speciesmayactsimultaneouslyascompetitorandpredatorforotherspeciesatthesametrophiclevel.ThisisknownasIntraguildPredation(IGP).Mostresearchonthistopicdescribesthefinalstepsofthisphenomenon,whenonespeciessufferslostprogenyordecreasednumbersduetopredationandcompetitionbyanotherspecies.However,littleisknownaboutthemechanismthatregulatesthisinteractioninprevioussteps.Inthisworktwospeciesofthesameguild(LittleOwlAthenenoctuaandBarnOwlTytoalba)wereselectedtotestthehypothesisthatthehuntingandsocialbehaviouroftheLittleOwlwouldbeconditionedbythepresenceofBarnOwls.NineLittleOwlswereradio-trackedandmonitoredforninemonths.1223fixeswereobtainedand250hoursoflisteningwererecorded.Moreover,duringthistimeBarnOwlsweredetected66timesscreeching,huntingorflyinginthesameareasasthemonitoredLittleOwls.Thesubsequentactivity(movementsandvoices)oftaggedanduntaggedLittleOwlswasobservedduring30-minuteperiods.TheresultsshowthatLittleOwlbehaviourwasaffectedbyBarnOwlpresence.WhenLittleOwlsnotedthepresenceofBarnOwls,theystayedquietandsilent,oralternatively,soughtrefugeinthebranchesoftreesorinsecureholesinbuildings,resumingtheiractivitiesminuteslater,whentheriskofpredationwaspresumablylower.ThisbehaviourmayhaveenabledsurvivalandsuccessfulbreedingofLittleOwlincloseproximitytoBarnOwls.

【 授权许可】

Unknown