Publications et données de B. Holzer

Documents écrit par B. Holzer (5) | parle de B. Holzer (6)

Genetic clusters and sex-biased gene flow in a unicolonial Formica ant.

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B. Holzer et al. (2009)

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BACKGROUND: Animal societies are diverse, ranging from small family-based groups to extraordinarily large social networks in which many unrelated individuals interact. At the extreme of this continuum, some ant species form unicolonial populations in which workers and queens can move among multiple...

Foreign ant queens are accepted but produce fewer offspring.

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B. Holzer et al. (2008)

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Understanding social evolution requires us to understand the processes regulating the number of breeders within social groups and how they partition reproduction. Queens in polygynous (multiple queens per colony) ants often seek adoption in established colonies instead of founding a new colony indep...

Stay or drift? Queen acceptance in the ant Formica paralugubris

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B. Holzer et al. (2008)

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The acceptance of new queens in ant colonies has profound effects on colony kin structure and inclusive fitness of workers. Therefore, it is important to study the recognition and discrimination behaviour of workers towards reproductive individuals entering established colonies. We examined the acce...

Sham nepotism as a result of intrinsic differences in brood viability in ants.

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B. Holzer et al. (2006)

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In animal societies, cooperation for the common wealth and latent conflicts due to the selfish interests of individuals are in delicate balance. In many ant species, colonies contain multiple breeders and workers interact with nestmates of varying degrees of relatedness. Therefore, workers could inc...

Unicoloniality, recognition and genetic differentiation in a native Formica ant.

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B. Holzer et al. (2006)

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Some ants have an extraordinary form of social organization, called unicoloniality, whereby individuals mix freely among physically separated nests. This mode of social organization has been primarily studied in introduced and invasive ant species, so that the recognition ability and genetic structu...