Worker Longevity in Harvester Ants (Pogonomyrmex)
نویسندگان
چکیده
منابع مشابه
Genetic caste determination in Pogonomyrmex harvester ants
Division of labour between reproductive queens and sterile workers is a hallmark of insect societies and an important component of their ecological success (Hölldobler & Wilson, 1990). In ants and other social Hymenoptera forming large and complex societies, reproductive division of labour is generally associated with marked morphological differences between the queen and worker castes. These d...
متن کاملDistribution and evolution of genetic caste determination in Pogonomyrmex seed-harvester ants.
We examined the distribution and ancestral relationships of genetic caste determination (GCD) in 46 populations of the seed-harvester ants Pogonomyrmex barbatus and P. rugosus across the east-to-west range of their distributions. Using a mtDNA sequence and two nuclear markers diagnostic for GCD, we distinguished three classes of population phenotypes: those with GCD, no evidence of GCD, and mix...
متن کاملEffects of hybridization and life history tradeoffs on pathogen resistance in the Harvester ants (Pogonomyrmex)
A fundamental challenge faced by all organisms is the risk of infection by pathogens that can significantly reduce their fitness. The evolutionary dynamic between hosts and pathogens is expected to be a coevolutionary cycle, as pathogens evolve by increasing their level of virulence and hosts respond by increasing their level of resistance. The factors that influence the dynamics of adaptation ...
متن کاملExtreme genetic differences between queens and workers in hybridizing Pogonomyrmex harvester ants.
The process of reproductive caste determination in eusocial insect colonies is generally understood to be mediated by environmental, rather than genetic factors. We present data demonstrating unexpected genetic differences between reproductive castes in a variant of the rough harvester ant, Pogonomyrmex rugosus var. fuscatus. Across multiple loci, queens were consistently more homozygous than e...
متن کاملWorker division of labor and endocrine physiology are associated in the harvester ant, Pogonomyrmex californicus.
In Pogonomyrmex californicus harvester ants, an age-associated division of labor occurs in the worker caste, in which young workers perform in-nest tasks and older workers forage for food. Here, we tested whether this behavioral division is age based or age flexible, and whether it coincides with differential expression of systemic hormones with known roles in behavioral regulation. Whole-body ...
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ژورنال
عنوان ژورنال: Psyche: A Journal of Entomology
سال: 1987
ISSN: 0033-2615,1687-7438
DOI: 10.1155/1987/63930