Fiche du document
- doi: 10.1111/mec.16821
- issn: 0962-1083
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1111/mec.16821
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/pmid/36504171
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/eissn/1365-294X
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_9042BFC8DFC27
info:eu-repo/semantics/openAccess , CC BY 4.0 , https://creativecommons.org/licenses/by/4.0/
Sujets proches
Rulers Sovereigns RoyaltyCiter ce document
P. Blacher et al., « Cryptic recessive lethality of a supergene controlling social organization in ants. », Serveur académique Lausannois, ID : 10.1111/mec.16821
Métriques
Partage / Export
Résumé
Supergenes are clusters of linked loci that control complex phenotypes, such as alternative forms of social organization in ants. Explaining the long-term maintenance of supergenes is challenging, particularly when the derived haplotype lacks homozygous lethality and causes gene drive. In the Alpine silver ant, Formica selysi, a large and ancient social supergene with two haplotypes, M and P, controls colony social organization. Single-queen colonies only contain MM females, while multiqueen colonies contain MP and PP females. The derived P haplotype, found only in multiqueen colonies, selfishly enhances its transmission through maternal effect killing, which could have led to its fixation. A population genetic model showed that a stable social polymorphism can only be maintained under a narrow set of conditions, which includes partial assortative mating by social form (which is known to occur in the wild), and low fitness of PP queens. With a combination of field and laboratory experiments, we show that the P haplotype has deleterious effects on female fitness. The survival rate of PP queens and workers was around half that of other genotypes. Moreover, P-carrying queens had lower fertility and fecundity compared to other queens. We discuss how cryptic lethal effects of the P haplotype help stabilize this ancient polymorphism.