Wood ants protect their brood with tree resin

Détails

Ressource 1Télécharger: BIB_74EB32E3EBFE.P001.pdf (323.48 [Ko])
Etat: Serval
Version: Final published version
ID Serval
serval:BIB_74EB32E3EBFE
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Wood ants protect their brood with tree resin
Périodique
Animal Behaviour
Auteur(s)
Brütsch T., Chapuisat M.
ISSN
1095-8282
ISSN-L
0003-3472
Statut éditorial
Publié
Date de publication
2014
Peer-reviewed
Oui
Volume
93
Pages
157-161
Langue
anglais
Résumé
Social insects use multiple lines of collective defences to combat pathogens. One example of a behav- ioural group defence is the use of antimicrobial plant compounds to disinfect the nest. Indeed, wood ants collect coniferous tree resin, and the presence of resin in their nest protects them against fungal and bacterial pathogens. Many questions remain on the mechanisms of resin use, including which factors elicit resin collection and placement within nests. Here, we investigated whether the presence of brood induces Formica paralugubris workers to collect more resin, and whether the workers preferentially place resin near the brood. We also tested whether the collection and placement of resin depends on the presence of the fungal entomopathogen Beauveria bassiana. Workers brought more resin to their nest when brood was present, and preferentially placed the resin near the brood. In contrast, workers did not increase resin collection in response to exposure to B. bassiana, nor did they place resin closer to contaminated brood or contaminated areas of the nest. This lack of response may be explained by a limited effect of resin against the germination and growth of B. bassiana in vitro. Overall, our main result is that woods ants actively position resin near the brood, which probably confers prophylactic protection against other detrimental microorganisms.
Mots-clé
ant, brood protection, Formica paralugubris, prophylaxis, resin, sanitation, self-medication, social immunity, social insects
Web of science
Création de la notice
14/04/2014 14:08
Dernière modification de la notice
03/03/2018 18:22
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