Frank T M
Biol Bull. 1999 Apr;196(2):137-144. doi: 10.2307/1542559.
The temporal characteristics of the visual systems of eight species of mesopelagic crustaceans were studied using the electroretinogram (ERG). Experiments were conducted on shipboard, using dark-captured specimens collected off the south coast of Cuba. As one would expect based on the relative intensity differences in their light environments, the deepest living species, Systellaspis debilis and Sergia filictum, have low maximum critical flicker fusion frequencies (CFFs) of 21-25 Hz, whereas the shallower living species Oplophorus gracilirostris and Janicella spinacauda have higher maximum CFFs (31-32 Hz). One of the shallowest living species, Funchalia villosa, has an unusually low maximum CFF (24 Hz), which may be a function of working with a dark-adapted eye. Two of the bilobed euphausiid species, Nematobrachion flexipes and N. sexspinosus, have very high maximum CFFs (44-57 Hz), comparable to those of surface-dwelling crabs, even though they live between 400 and 600 m. The maximum CFF of Stylocheiron maximum, a shallower living bilobed euphausiid, is only 36 Hz, indicating that maximum CFF among the euphausiids cannot be correlated with depth of occurrence. The unusually high flicker fusion frequency of the deeper living euphausiids may be correlated to their preference for bioluminescent prey.
利用视网膜电图（ERG）研究了8种中层甲壳类动物视觉系统的时间特征。实验在船上进行，使用从古巴南海岸捕获的暗适应标本。正如基于它们光环境中的相对强度差异所预期的那样，生活在最深层的物种，柔弱柱鞘虾（Systellaspis debilis）和丝状塞尔虾（Sergia filictum），具有21 - 25赫兹的低最大临界闪烁融合频率（CFF），而生活在较浅水域的物种纤细深海磷虾（Oplophorus gracilirostris）和棘刺简肢磷虾（Janicella spinacauda）具有较高的最大CFF（31 - 32赫兹）。生活在最浅水域的物种之一，绒毛芬氏磷虾（Funchalia villosa），具有异常低的最大CFF（24赫兹），这可能是由于使用暗适应眼睛的结果。两种叶状磷虾物种，挠足线虫磷虾（Nematobrachion flexipes）和六刺线虫磷虾（N. sexspinosus），具有非常高的最大CFF（44 - 57赫兹），与表层生活的螃蟹相当，尽管它们生活在400至600米之间。较浅生活的叶状磷虾——大形真刺磷虾（Stylocheiron maximum）的最大CFF仅为36赫兹，这表明磷虾中的最大CFF与出现深度无关。生活在较深水域的磷虾异常高的闪烁融合频率可能与其对生物发光猎物的偏好有关。
