Shinya Akasaka

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Dopamine plays multiple roles in the regulation of reproduction in female honeybees where it appears to act independently of juvenile hormone (JH). In males the role of dopamine and its relationship to JH control have not been elucidated. In the present study we determined hemolymph levels of dopamine and its metabolite (N-acetyldopamine) in males at(More)
We determined the neuroendocrine mechanisms underlying regulation of mating flight behaviors in male honey bees. Both a precursor of dopamine (3,4-dihydroxyphenylalanine: DOPA) and a precursor of octopamine (tyramine) in the brain decreased in an age-dependent fashion before sexual maturation (i.e. 8days of age), whereas the levels of brain dopamine,(More)
Dopamine (DA) and juvenile hormone (JH) are multifunctional regulators of behaviour in social insects, with distinct effects across species and even between different dominance positions within the same species. We examined the effects of JH on the brain dopaminergic system in honey bee males to investigate the potential relationship between JH and DA(More)
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