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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 PLoS+One
2017 ; 12
(3
): e0171388
Nephropedia Template TP
gab.com Text
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Avoidance of plants unsuitable for the symbiotic fungus in leaf-cutting ants:
Learning can take place entirely at the colony dump
#MMPMID28273083
Arenas A
; Roces F
PLoS One
2017[]; 12
(3
): e0171388
PMID28273083
show ga
Plants initially accepted by foraging leaf-cutting ants are later avoided if they
prove unsuitable for their symbiotic fungus. Plant avoidance is mediated by the
waste produced in the fungus garden soon after the incorporation of the
unsuitable leaves, as foragers can learn plant odors and cues from the damaged
fungus that are both present in the recently produced waste particles. We asked
whether avoidance learning of plants unsuitable for the symbiotic fungus can take
place entirely at the colony dump. In order to investigate whether cues available
in the waste chamber induce plant avoidance in naïve subcolonies, we exchanged
the waste produced by subcolonies fed either fungicide-treated privet leaves or
untreated leaves and measured the acceptance of untreated privet leaves before
and after the exchange of waste. Second, we evaluated whether foragers could
perceive the avoidance cues directly at the dump by quantifying the visits of
labeled foragers to the waste chamber. Finally, we asked whether foragers learn
to specifically avoid untreated leaves of a plant after a confinement over 3
hours in the dump of subcolonies that were previously fed fungicide-treated
leaves of that species. After the exchange of the waste chambers, workers from
subcolonies that had access to waste from fungicide-treated privet leaves learned
to avoid that plant. One-third of the labeled foragers visited the dump.
Furthermore, naïve foragers learned to avoid a specific, previously unsuitable
plant if exposed solely to cues of the dump during confinement. We suggest that
cues at the dump enable foragers to predict the unsuitable effects of plants even
if they had never been experienced in the fungus garden.