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Le mosche della frutta, che normalmente sono piuttosto solitarie, se esposte a stress adottano un comportamento collettivo. Lo dice uno studio di ricercatori del Politecnico federale di Losanna (EPFL).
Sulla rivista Nature, essi affermano di aver spruzzato CO2 per spaventare le drosophilae. Se sono pochi esemplari non reagiscono, se sono molte si radunano e scappano verso l’aria pura.
L'identificazione di vie sensoriali che reagiscono a uno stimolo collettivo potrebbe permettere di meglio comprendere le dinamiche comportamentali di pesci, uccelli migratori o anche degli umani.
ats/mas
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