AI Article Synopsis
- The study investigated changes in biogenic amines, specifically dopamine, in the brains of European honeybee queens before and after mating.
- Twelve-day-old mated queens exhibited lower levels of dopamine and its metabolite compared to 6- and 12-day-old virgin queens, suggesting a down-regulation after mating.
- It is hypothesized that the higher dopamine levels in virgin queens may play a role in activating ovarian follicles and regulating their typical behaviors.
Article Abstract
To explore neuro-endocrinal changes in the brain of European honeybee (Apis mellifera) queens before and after mating, we measured the amount of several biogenic amines, including dopamine and its metabolite in the brain of 6- and 12-day-old virgins and 12-day-old mated queens. Twelve-day-old mated queens showed significantly lower amounts of dopamine and its metabolite (N-acetyldopamine) than both 6- and 12-day-old virgin queens, whereas significant differences in the amounts of these amines were not detected between 6- and 12-day-old virgin queens. These results are explained by down-regulation of both synthesis and secretion of brain dopamine after mating. It is speculated that higher amounts of brain dopamine in virgin queens might be involved in activation of ovarian follicles arrested in previtellogenic stages, as well as regulation of their characteristic behaviors.
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| http://dx.doi.org/10.1007/s00114-005-0631-3 | DOI Listing |
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