Evolution of compound eye morphology underlies differences in vision between closely related Drosophila species
Evolution of compound eye morphology underlies differences in vision between closely related Drosophila species
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复眼形态的进化是密切相关的果蝇物种之间视力差异的基础
DOI：
10.1101/2023.07.16.549164
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Buffry A
中科院分区：
文献类型：
--
作者：
Buffry A
昆虫已经进化出复杂的视觉系统，并显示出对不同生态位的惊人适应。黑腹果蝇亚群的物种在复眼大小上表现出广泛的种内和种间差异。这些差异为更好地了解昆虫眼睛结构的变化及其对视力的影响提供了极好的机会。在这里，我们进一步探讨了眼睛大小的差异。毛里求斯和它的兄弟物种。simulans。结果我们确认d。毛利亚人迅速进化出了更大的眼睛，因为他们有更多更宽的眼瞳。因为它们是在大约24万年前分化出来的。眼大小，特别是小眼大小对功能的影响，通常只能根据复眼的刚性表面形态来估计。因此，我们使用三维同步辐射断层扫描测量三维光学参数，预测光学容量，并将建模视觉与体内光运动反应进行比较。我们的光学模型预测了更高的对比度敏感度。毛里求斯，我们通过在飞行舞台上给拴着的苍蝇展示正弦光栅来验证。同样，我们也证实了小眼果蝇具有更高的空间灵敏度，并发现了更高的时间分辨率的证据。结论我们的研究表明，亲缘关系密切的果蝇之间即使是微小的小眼大小差异也会影响这些昆虫的视力。因此，为了更好地了解复眼的结构-功能，以及眼睛大小、形状和功能的多样化如何帮助昆虫适应广泛的生态位，需要对其他果蝇、其他双翅目动物和其他昆虫的眼形态的种内和种间变异及其对视力的影响进行进一步的比较研究。
BackgroundInsects have evolved complex visual systems and display an astonishing range of adaptations for diverse ecological niches. Species ofDrosophila melanogastersubgroup exhibit extensive intra- and interspecific differences in compound eye size. These differences provide an excellent opportunity to better understand variation in insect eye structure and the impact on vision. Here we further explored the difference in eye size betweenD. mauritianaand its sibling speciesD. simulans.ResultsWe confirmed thatD. mauritianahave rapidly evolved larger eyes as a result of more and wider ommatidia thanD. simulanssince they recently diverged approximately 240,000 years ago. The functional impact of eye size, and specifically ommatidia size, is often only estimated based on the rigid surface morphology of the compound eye. Therefore, we used 3D synchrotron radiation tomography to measure optical parameters in 3D, predict optical capacity, and compare the modelled vision to in vivo optomotor responses. Our optical models predicted higher contrast sensitivity forD. mauritiana, which we verified by presenting sinusoidal gratings to tethered flies in a flight arena. Similarly, we confirmed the higher spatial acuity predicted forDrosophila simulanswith smaller ommatidia and found evidence for higher temporal resolution.ConclusionsOur study demonstrates that even subtle differences in ommatidia size between closely relatedDrosophilaspecies can impact the vision of these insects. Therefore, further comparative studies of intra- and interspecific variation in eye morphology and the consequences for vision among otherDrosophilaspecies, other dipterans and other insects are needed to better understand compound eye structure–function and how the diversification of eye size, shape, and function has helped insects to adapt to the vast range of ecological niches.
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果蝇头中两个与发展相关的性状的定量性状基因座和拮抗剂关联。
DOI：
10.1093/jisesa/iew115
发表时间：
2017-01
期刊：
Journal of insect science (Online)
影响因子：
--
作者：
Norry FM;Gomez FH
通讯作者：
Gomez FH
影响因子：
1.9
作者：
Nilsson, Dan-E
通讯作者：
Nilsson, Dan-E
影响因子：
9.2
作者：
Song, Zhuoyi;Postma, Marten;Billings, Stephen A.;Coca, Daniel;Hardie, Roger C.;Juusola, Mikko
通讯作者：
Juusola, Mikko
DOI：
--
发表时间：
1972
期刊：
影响因子：
--
作者：
R. Hengstenberg
通讯作者：
R. Hengstenberg
影响因子：
3.4
作者：
Hilbrant M;Almudi I;Leite DJ;Kuncheria L;Posnien N;Nunes MD;McGregor AP
通讯作者：
McGregor AP