Fine-scale habitat heterogeneity favours the coexistence of supergene-controlled social forms in Formica selysi

Sacha Zahnd, Amaranta Fontcuberta, Mesut Koken, Aline Cardinaux & Michel Chapuisat
Background: Social insects vary widely in social organization, yet the genetical and ecological factors influencing this variation remain poorly known. In particular, whether spatially varying selection influences the maintenance of social polymorphisms in ants has been rarely investigated. To fill this gap, we examined whether fine-scale habitat heterogeneity contributes to the co-existence of alternative forms of social organization within populations. Single-queen colonies (monogyne social form) are generally associated with better colonization abilities, whereas multiple-queen colonies...
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