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2016 ; 11
(3
): e0151925
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Moribund Ants Do Not Call for Help
#MMPMID26986741
Miler K
PLoS One
2016[]; 11
(3
): e0151925
PMID26986741
show ga
When an antlion captures a foraging ant, the victim's nestmates may display
rescue behaviour. This study tested the hypothesis that the expression of rescue
behaviour depends on the life expectancy of the captured ant. This hypothesis
predicts that the expression of rescue behaviour will be less frequent when the
captured ant has a lower life expectancy than when it has a higher life
expectancy because such a response would be adaptive at the colony level. Indeed,
significant differences were found in the frequency of rescue behaviours in
response to antlion victims with differing life expectancies. In agreement with
prediction, victims with lower life expectancies were rescued less frequently,
and those rescues had a longer latency and shorter duration. There was also a
qualitative difference in the behaviour of rescuers to victims from the low and
high life expectancy groups. Several explanations for these findings are
proposed.
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