Influence of age and juvenile hormone on brain dopamine level in male honeybee (Apis mellifera):: Association with reproductive maturation
Influence of age and juvenile hormone on brain dopamine level in male honeybee (Apis mellifera):: Association with reproductive maturation
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DOI：
10.1016/j.jinsphys.2008.03.003
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发表时间：
2008-05-01
影响因子：
2.2
通讯作者：
Sasaki, Masami
中科院分区：
文献类型：
--
作者：
Harano, Ken-ichi;Sasaki, Ken;Sasaki, Masami
多巴胺（DA）是昆虫体内一种重要的生物胺，对蜜蜂的生殖有重要的调节作用。然而，其功能尚未在雄性雄蜂中进行研究。为了阐明雄蜂DA的发育变化，在不同年龄的脑DA水平进行了研究，并显示出类似的模式，以前报道的保幼激素（JH）血淋巴滴度。DA水平在出苗时最低，在第7或第8天达到峰值，随后下降。JH类似物的应用增加了年轻雄蜂（2-4日龄）脑DA水平，表明JH在雄蜂中调节DA。在年轻的雄蜂，成熟的男性生殖器官密切匹配的增加大脑DA。睾丸的干重下降，精囊从出现到第8天增加。粘液腺的干重增加到第4天。因此，由JH调节的DA可能在雄蜂中具有生殖行为和/或生理功能。(C)2008爱思唯尔有限公司保留所有权利。
Dopamine (DA) is a major functional biogenic amine in insects and has been suggested to regulate reproduction in female honeybees. However, its function has not been investigated in male drones. To clarify developmental changes of DA in drones, brain DA levels were investigated at various ages and showed a similar pattern to the previously reported juvenile hormone (JH) hemolymph titer. The DA level was lowest at emergence and peaked at day 7 or 8, followed by decline. Application of JH analog increased brain DA levels in young drones (2-4-days-old), suggesting regulation of DA by JH in drones. In young drones, maturation of male reproductive organs closely matched the increase in brain DA. The dry weight of testes decreased and that of seminal vesicles increased from emergence to day 8. The dry weight of mucus glands increased up to day 4. Consequently, DA regulated by JH might have reproductive behavior and/or physiological functions in drones. (C) 2008 Elsevier Ltd. All rights reserved.