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J. Proteome Res:科学家揭示蜜蜂大脑的神经肽类和其所承担的分工之间的关联

  1. 关联
  2. 分工
  3. 大脑
  4. 神经肽
  5. 蜜蜂

来源:生物谷 2016-03-23 14:52

近日,一项刊登在国际杂志Journal of Proteome Research上的研究论文中,来自国外的研究人员通过研究发现,蜜蜂大脑中的神经肽类随着其在蜂巢中所扮演的角色和分工不同而发生着变化。

2014年5月10日 讯 /生物谷BIOON/ --近日,一项刊登在国际杂志Journal of Proteome Research上的研究论文中,来自国外的研究人员通过研究发现,蜜蜂大脑中的神经肽类随着其在蜂巢中所扮演的角色和分工不同而发生着变化。

研究者Mario Sergio Palma和其同事表示,在膜翅目昆虫组群中对于单一个体的任务划分是其社会行为的一个重要发展,这当中就包括蜜蜂、蚂蚁等昆虫。社会分工最典型的例子就是种性的产生,其通过营养物质和激素来促进蜜蜂蜂王长寿,这样蜂王才能生产成千上万个蜂卵以及不孕的蜂工以保护蜂巢。

包括非洲化蜜蜂在内的蜜蜂其都可以被认为是“杀手”蜜蜂,其因年龄来划分任务,随着蜂工年龄增长,其角色就会从日常的喂养者和清洁工人变成守卫者和觅食者,研究人员想知道其大脑中的神经肽是否也随着其职务的转变而发生转变。

研究者表示,蜜蜂角色的转变会导致其大脑中产生的两种物质随着时间和位置的改变而改变,而这些对蜜蜂大脑非常关键的神经肽类也和其因年龄相关的劳力分配的改变而改变着。(生物谷Bioon.com)

 

MALDI Imaging Analysis of Neuropeptides in the Africanized Honeybee (Apis mellifera) Brain: Effect of Ontogeny

Marcel Pratavieira , Anally Ribeiro da Silva Menegasso , Ana Maria Caviquioli Garcia , Diego Simões dos Santos , Paulo Cesar Gomes , Osmar Malaspina , and Mario Sergio Palma *

 

The occurrence and spatial distribution of the neuropeptides AmTRP-5 and AST-1 in the honeybee brain were monitored via MALDI spectral imaging according to the ontogeny of Africanized Apis mellifera. The levels of these peptides increased in the brains of 0–15 day old honeybees, and this increase was accompanied by an increase in the number of in-hive activities performed by the nurse bees, followed by a decrease in the period from 15 to 25 days of age, in which the workers began to perform activities outside the nest (guarding and foraging). The results obtained in the present investigation suggest that AmTRP-5 acts in the upper region of both pedunculi of young workers, possibly regulating the cell cleaning and brood capping activities. Meanwhile, the localized occurrence of AmTRP-5 and AST-1 in the antennal lobes, subesophageal ganglion, upper region of the medulla, both lobula, and α- and β-lobes of both brain hemispheres in 20 to 25 day old workers suggest that the action of both neuropeptides in these regions may be related to their localized actions in these regions, regulating foraging and guarding activities. Thus, these neuropeptides appear to have some functions in the honeybee brain that are specifically related to the age-related division of labor.

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