Divergence of dim-light vision among bats (order: Chiroptera) as estimated by molecular and electrophysiological methods.
Divergence of dim-light vision among bats (order: Chiroptera) as estimated by molecular and electrophysiological methods.
复制标题
通过分子和电生理学方法估计蝙蝠（翼手目）的弱光视觉差异。
DOI：
10.1038/srep11531
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发表时间：
2015-06-23
影响因子：
4.6
通讯作者：
Zhang YP
中科院分区：
文献类型：
--
作者：
Liu HQ;Wei JK;Li B;Wang MS;Wu RQ;Rizak JD;Zhong L;Wang L;Xu FQ;Shen YY;Hu XT;Zhang YP
弱光视力存在于所有蝙蝠身上，但在不同物种之间存在差异。东半球果蝠(翼蝙科)的眼睛发育完全；食虫蝙蝠的眼睛通常会退化，这些蝙蝠依靠发育良好的回声定位。一种例外的是袋鼠，它们能够喉部回声定位，但更喜欢用视觉导航，眼睛正常。在这项研究中，包括锰增强磁共振成像(MEMRI)、f-VEP和RNA-SEQ在内的综合方法被用来验证这种差异。MEMRI结果显示，翼蝙蝠的上丘(SC)/下丘(IC)体积比(3：1)远大于食虫蝙蝠(1：7)。此外，翼蝙蝠(−6.30和−6.37)和食虫蝙蝠(−3.71)的绝对视觉阈值(logCD/m2·S)低于其他食虫蝙蝠(−1.90)。最后，与视觉通路相关的基因显示出正向选择、收敛进化、上调的迹象，以及在翼蝙科和臭蝙科蝙蝠中相似的基因表达模式。不同的结果表明，翼蝙蝠和食虫蝙蝠的视力比食虫蝙蝠更发达，这表明有必要对蝙蝠的行为进行进一步的研究。
Dim-light vision is present in all bats, but is divergent among species. Old-World fruit bats (Pteropodidae) have fully developed eyes; the eyes of insectivorous bats are generally degraded, and these bats rely on well-developed echolocation. An exception is the Emballonuridae, which are capable of laryngeal echolocation but prefer to use vision for navigation and have normal eyes. In this study, integrated methods, comprising manganese-enhanced magnetic resonance imaging (MEMRI), f-VEP and RNA-seq, were utilized to verify the divergence. The results of MEMRI showed that Pteropodidae bats have a much larger superior colliculus (SC)/ inferior colliculus (IC) volume ratio (3:1) than insectivorous bats (1:7). Furthermore, the absolute visual thresholds (log cd/m2•s) of Pteropodidae (−6.30 and −6.37) and Emballonuridae (−3.71) bats were lower than those of other insectivorous bats (−1.90). Finally, genes related to the visual pathway showed signs of positive selection, convergent evolution, upregulation and similar gene expression patterns in Pteropodidae and Emballonuridae bats. Different results imply that Pteropodidae and Emballonuridae bats have more developed vision than the insectivorous bats and suggest that further research on bat behavior is warranted.
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影响因子：
3.3
作者：
Loewen, CJR;Moritz, OL;Molday, RS
通讯作者：
Molday, RS
影响因子：
2.5
作者：
HOFFMANN, KP
通讯作者：
HOFFMANN, KP
DOI：
10.1073/pnas.93.2.560
发表时间：
1996-01-23
影响因子：
11.1
作者：
Baylor, D
通讯作者：
Baylor, D
影响因子：
4.8
作者：
Kasus-Jacobi, A;Ou, JF;Edwards, AO
通讯作者：
Edwards, AO
影响因子：
64.5
作者：
Furukawa, T;Morrow, EM;Cepko, CL
通讯作者：
Cepko, CL