SEXUAL DIMORPHISM IN A PHOTORECEPTOR
SEXUAL DIMORPHISM IN A PHOTORECEPTOR
复制标题
DOI：
10.1038/291241a0
复制
发表时间：
1981-01-01
期刊：
影响因子：
64.8
通讯作者：
KIRSCHFELD, K
中科院分区：
文献类型：
--
作者：
FRANCESCHINI, N;HARDIE, R;KIRSCHFELD, K
仅在雄性眼睛的限定区域内，家蝇（Musca domestica）的1个中心细胞与其6个邻居相似，不仅具有相同的视觉色素和生理特性，而且将轴突发送到相同的神经丛。这些雄性特有的细胞支配着视网膜的前背部分（中央凹），这是雄性在飞行追逐中用来追踪雌性的地方，这一事实为这种两性二态视网膜组织的功能提供了线索。众所周知，男性的中央凹能够驱动性别特异性的高阶神经元，它可能为了其他更重要的信息处理而牺牲了色觉，比如改善量子捕捉，可能还包括对比度转移或运动检测。
In a restricted, well defined region of the male eye only, 1 [of the housefly Musca domestica] of the central cells resembles its 6 neighbors not only in having the same visual pigment and physiological properties, but also in sending its axon to the same neuropile. A clue to the function of this sexually dimorphic retinal organization is given by the fact that these male-specific cells dominate the frontal-dorsal part of the retina (fovea) which is used by the male to track females in aerobatic chases. The male fovea, already known to drive sex-specific hgih-order neurons, probably has sacrificed color vision for other more vital kinds of information processing such as improving quantum catch and possibly also contrast transfer or movement detection.