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首页> 外文期刊>Journal of Insect Physiology >Dopamine enhances locomotor activity for mating in male honeybees (Apis mellifera L.)
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Dopamine enhances locomotor activity for mating in male honeybees (Apis mellifera L.)

机译：多巴胺增强雄性蜜蜂交配的运动能力。

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摘要

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 post-emergence days 0-16. The development of locomotor and flight activities were recorded over the same period. Hemolymph levels of dopamine and N-acetyldopamine were found to increase at the time of onset of mating flight activity and those of dopamine decreased thereafter. Both locomotor and flight activities increased in parallel with hemolymph dopamine levels but the increased activity levels were maintained following decline of dopamine levels. Brain and meso-metathoracic ganglia levels of dopamine showed a similar developmental profile to hemolymph dopamine levels. Locomotor activities were temporarily inhibited by injection of a dopamine-receptor antagonist (cis(Z)-flupenthixol) into the thorax, and were enhanced by injection of a dopamine-receptor agonist (6,7-ADTN). These results suggest that dopamine regulates locomotor activities for mating and plays a role downstream of JH in premature males in honeybees.
机译：多巴胺在雌性蜜蜂的生殖调节中起着多种作用，在这种情况下，多巴胺似乎独立于幼体激素（JH）起作用。在男性中，多巴胺的作用及其与JH控制的关系尚未阐明。在本研究中，我们确定了出苗后0-16天男性的多巴胺及其代谢产物（N-乙酰多巴胺）的血淋巴水平。同期记录了运动和飞行活动的发展。发现在交配飞行开始时，多巴胺和N-乙酰基多巴胺的血淋巴水平增加，此后多巴胺的血淋巴水平降低。运动和飞行活动都与血淋巴多巴胺水平同时增加，但在多巴胺水平下降后仍保持增加的活动水平。多巴胺的脑和中-metathoracic神经节水平显示与血淋巴多巴胺水平相似的发展概况。通过向胸腔内注射多巴胺受体拮抗剂（cis（Z）-flupenthixol）暂时抑制运动活动，并通过注射多巴胺受体激动剂（6,7-ADTN）增强运动能力。这些结果表明，多巴胺调节交配的运动活性，并在蜜蜂的早产雄性中在JH下游起作用。

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