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Statements

Subject Item
n2:RIV%2F00027014%3A_____%2F14%3A%230002014%21RIV15-MZE-00027014
rdf:type
n10:Vysledek skos:Concept
rdfs:seeAlso
http://www.plosone.org/article/fetchObject.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0095594&representation=PDF
dcterms:description
Begging behaviour of nestlings has been intensively studied for several decades as a key component of parent-offspring conflict. There are essentially two main theories to account for intensity of food solicitation among offspring: that intensity of begging is related to some form of scramble competition between nest mates or that it offers honest signalling of need to parents. The vast majority of studies which have addressed begging behaviour have been based on observations of, and experiments on, nestlings and have not considered begging behaviour, during the post-fledging period. Begging vocalizations in this post-fledging phase of dependence have rarely been studied, despite the importance of vocalizations as a communication method between offspring and parents, particularly for nocturnal species. We radiotracked 39 fledglings of the Tengmalm's owl (Aegolius funereus) in two years with different availability of prey: 2010 (n = 29 fledglings) and 2011 (n = 10 fledglings) and made 1320 nightly localizations in which we recorded presence or absence of begging calls. Within years, the most important measures related to the probability of vocalization were body condition at fledging, time of night, number of surviving siblings, age and weather conditions. Begging intensity increased with age in both years; however, in the year with low prey availability fledglings vocalized significantly more often. The main factor causing these differences between years was probably the different availability of prey, affecting breeding success, post-fledging behaviour, and thus also both short-and long-term needs of offspring. We believe that our results suggest honest signalling of their fledgling's need. Begging behaviour of nestlings has been intensively studied for several decades as a key component of parent-offspring conflict. There are essentially two main theories to account for intensity of food solicitation among offspring: that intensity of begging is related to some form of scramble competition between nest mates or that it offers honest signalling of need to parents. The vast majority of studies which have addressed begging behaviour have been based on observations of, and experiments on, nestlings and have not considered begging behaviour, during the post-fledging period. Begging vocalizations in this post-fledging phase of dependence have rarely been studied, despite the importance of vocalizations as a communication method between offspring and parents, particularly for nocturnal species. We radiotracked 39 fledglings of the Tengmalm's owl (Aegolius funereus) in two years with different availability of prey: 2010 (n = 29 fledglings) and 2011 (n = 10 fledglings) and made 1320 nightly localizations in which we recorded presence or absence of begging calls. Within years, the most important measures related to the probability of vocalization were body condition at fledging, time of night, number of surviving siblings, age and weather conditions. Begging intensity increased with age in both years; however, in the year with low prey availability fledglings vocalized significantly more often. The main factor causing these differences between years was probably the different availability of prey, affecting breeding success, post-fledging behaviour, and thus also both short-and long-term needs of offspring. We believe that our results suggest honest signalling of their fledgling's need.
dcterms:title
Factors Affecting Vocalization in Tengmalm's Owl (Aegolius funereus) Fledglings during Post-Fledging Dependence Period: Scramble Competition or Honest Signalling of Need? Factors Affecting Vocalization in Tengmalm's Owl (Aegolius funereus) Fledglings during Post-Fledging Dependence Period: Scramble Competition or Honest Signalling of Need?
skos:prefLabel
Factors Affecting Vocalization in Tengmalm's Owl (Aegolius funereus) Fledglings during Post-Fledging Dependence Period: Scramble Competition or Honest Signalling of Need? Factors Affecting Vocalization in Tengmalm's Owl (Aegolius funereus) Fledglings during Post-Fledging Dependence Period: Scramble Competition or Honest Signalling of Need?
skos:notation
RIV/00027014:_____/14:#0002014!RIV15-MZE-00027014
n3:aktivita
n6:I n6:S
n3:aktivity
I, S
n3:cisloPeriodika
4
n3:dodaniDat
n7:2015
n3:domaciTvurceVysledku
n15:5829879
n3:druhVysledku
n4:J
n3:duvernostUdaju
n12:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
16333
n3:idVysledku
RIV/00027014:_____/14:#0002014
n3:jazykVysledku
n16:eng
n3:klicovaSlova
parent-offspring conflict, yellow-headed blackbirds, sibling competition, biparental care, food abundance, tree swallows, strix-aluco, tawny owls, brood size, birds
n3:klicoveSlovo
n8:sibling%20competition n8:tawny%20owls n8:brood%20size n8:yellow-headed%20blackbirds n8:tree%20swallows n8:strix-aluco n8:parent-offspring%20conflict n8:birds n8:biparental%20care n8:food%20abundance
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[F3975FB78C54]
n3:nazevZdroje
PLoS One
n3:obor
n13:EG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n7:2014
n3:svazekPeriodika
9
n3:tvurceVysledku
Šťastný, Karel Kouba, Marek Bartoš, Luděk
n3:wos
000335298200067
s:issn
1932-6203
s:numberOfPages
9
n11:doi
10.1371/journal.pone.0095594