蜜蜂体内的磁接收器

Magnetoreception in honeybees

很多生物体内存在纳米磁铁矿颗粒,它们为体内的磁接收器奠定了生物物理基础,而磁接收器可以使这些生物能够利用磁场来辨别方位以及方向.蜜蜂腹部同样存在超顺磁磁铁矿颗粒,这些生物磁铁矿粒子尺寸的变化与铁沉积囊泡膜的相互抗拒作用以及与细胞骨架的相互作用组成一个完整的磁接收器系统,可以感觉磁场的变化并诱发神经信号的传递.

Nano-magnetic particles exist in many living bodies to get the information of direction and po- sition, which are the natural physical foundation of magnetoreception system. Superparamagnetic mag- netite and magnetoreception also exist in the abdomen of honeybees. Therefore, the fluctuation of mag- netic particles with the resistance of the membrane of the iron deposition vesicles and the association of cytoskeletons constitute a fine system to sense the change in magnetic field and to trigger the signal transduction.