Experimental conversion of colony social organization by manipulation of worker genotype composition in fire ants (Solenopsis invicta)

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Version: de l'auteur
ID Serval
serval:BIB_F506F313F170
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Experimental conversion of colony social organization by manipulation of worker genotype composition in fire ants (Solenopsis invicta)
Périodique
Behavioral Ecology and Sociobiology
Auteur(s)
Ross  K. G., Keller  L.
ISSN
0340-5443
Statut éditorial
Publié
Date de publication
02/2002
Peer-reviewed
Oui
Volume
51
Numéro
3
Pages
287-295
Notes
528DA Times Cited:12 Cited References Count:43 --- Old month value: Feb
Résumé
Previous studies have shown that colony social organization in Solenopsis invicta is under strong genetic control. Colonies containing some proportion of workers with the Bb or bb genotypes at the gene Gp-9 display polygyne social organization (multiple reproductive queens per colony), whereas colonies with only BB workers express monogyne organization (single reproductive queen per colony). The hypothesis that the presence of workers bearing the b allele confers the polygyne social phenotype on a colony leads to the prediction that social organization can be manipulated by experimentally altering frequencies of adult workers bearing this allele. We did this by replacing queens in colonies of each social form with single queens of the alternate form, which differ in Gp-9 genotype. As worker Gp-9 genotype compositions changed, experimental colonies switched to the alternate social organization. These switches occurred when frequencies of workers with the b allele passed an identifiable threshold, such that colonies with fewer than 5% such workers behaved like monogyne colonies and those with more than 10% behaved like polygyne colonies. Our data thus confirm the prediction that colony social organization in this ant can be altered by manipulating adult worker genotype compositions, and thereby support the hypothesis that the expression of polygyny requires the presence of adult workers bearing the b allele at Gp-9.
Mots-clé
behavioral genetics fire ants polygyny social organization solenopsis invicta quantitative trait loci queen polymorphism hymenoptera behavior formicidae evolution bees competition dispersal genetics
Web of science
Open Access
Oui
Création de la notice
24/01/2008 19:39
Dernière modification de la notice
20/08/2019 17:21
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