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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
2014 ; 281
(1797
): ä Nephropedia Template TP
gab.com Text
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English Wikipedia
Prenatal learning in an Australian songbird: habituation and individual
discrimination in superb fairy-wren embryos
#MMPMID25355472
Colombelli-Négrel D
; Hauber ME
; Kleindorfer S
Proc Biol Sci
2014[Dec]; 281
(1797
): ä PMID25355472
show ga
Embryos were traditionally considered to possess limited learning abilities
because of the immaturity of their developing brains. By contrast, neonates from
diverse species show behaviours dependent on prior embryonic experience. Stimulus
discrimination is a key component of learning and has been shown by a handful of
studies in non-human embryos. Superb fairy-wren embryos (Malurus cyaneus) learn a
vocal password that has been taught to them by the attending female during
incubation. The fairy-wren embryos use the learned element as their begging call
after hatching to solicit more parental feeding. In this study, we test whether
superb fairy-wren embryos have the capacity to discriminate between acoustical
stimuli and whether they show non-associative learning. We measured embryonic
heart rate response using a habituation/dishabituation paradigm with eggs sourced
from nests in the wild. Fairy-wren embryos lowered their heart rate in response
to the broadcasts of conspecific versus heterospecific calls, and in response to
the calls of novel conspecific individuals. Thus, fairy-wrens join humans as
vocal-learning species with known prenatal learning and individual
discrimination.