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• W2134632418 abstract "SUMMARY 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 content of juvenile hormone (JH) and ecdysteroids was determined in workers from (1) age-typical colonies, in which a typical age structure is maintained and workers transition across behaviors naturally, and (2) single-cohort colonies, which are entirely composed of same-aged workers, facilitating the establishment of age-independent division of labor. Foragers from both colony types had higher JH and lower ecdysteroid content than workers performing in-nest tasks, suggesting that age is not the sole determinant of worker behavior. This association between hormone content and behavior of P. californicus workers is similar to that previously observed in founding queens of this species. Because these hormones are key regulators of development and reproductive behavior, our data are consistent with the reproductive ground plan hypothesis (RGPH), which posits that the reproductive regulatory mechanisms of solitary ancestors were co-opted to regulate worker behavior." @default.
• W2134632418 created "2016-06-24" @default.
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• W2134632418 date "2012-02-01" @default.
• W2134632418 modified "2023-10-14" @default.
• W2134632418 title "Worker division of labor and endocrine physiology are associated in the harvester ant,<i>Pogonomyrmex californicus</i>" @default.
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• W2134632418 doi "https://doi.org/10.1242/jeb.060822" @default.
• W2134632418 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3257171" @default.
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