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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Proc+Biol+Sci
2016 ; 283
(1827
): 20160020
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Predator encounters have spatially extensive impacts on parental behaviour in a
breeding bird community
#MMPMID27030411
Moks K
; Tilgar V
; Thomson RL
; Calhim S
; Järvistö PE
; Schuett W
; Velmala W
; Laaksonen T
Proc Biol Sci
2016[Mar]; 283
(1827
): 20160020
PMID27030411
show ga
Predation risk has negative indirect effects on prey fitness, partly mediated
through changes in behaviour. Evidence that individuals gather social information
from other members of the population suggests that events in a community may
impact the behaviour of distant individuals. However, spatially wide-ranging
impacts on individual behaviour caused by a predator encounter elsewhere in a
community have not been documented before. We investigated the effect of a
predator encounter (hawk model presented at a focal nest) on the parental
behaviour of pied flycatchers (Ficedula hypoleuca), both at the focal nest and at
nearby nests different distances from the predator encounter. We show that nest
visitation of both focal pairs and nearby pairs were affected, up to 3 h and 1 h,
respectively. Parents also appeared to compensate initial disrupted feeding by
later increasing nest visitation rates. This is the first evidence showing that
the behaviour of nearby pairs was affected away from an immediate source of risk.
Our results indicate that the impacts of short-term predator encounters may
immediately extend spatially to the broader community, affecting the behaviour of
distant individuals. Information about predators is probably quickly spread by
cues such as intra- and heterospecific alarm calls, in communities of different
taxa.