Panoramic spatial vision in the bay scallop Argopecten irradians.

Panoramic spatial vision in the bay scallop Argopecten irradians.
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DOI:
10.1098/rspb.2021.1730
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发表时间:
2021-11-10
期刊:
Proceedings. Biological sciences
影响因子:
--
通讯作者:
Speiser DI
Speiser DI
中科院分区:
其他
文献类型:
--
作者:
Chappell DR;Horan TM;Speiser DI

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We have a growing understanding of the light-sensing organs and light-influenced behaviours of animals with distributed visual systems, but we have yet to learn how these animals convert visual input into behavioural output. It has been suggested they consolidate visual information early in their sensory-motor pathways, resulting in them being able to detect visual cues (spatial resolution) without being able to locate them (spatial vision). To explore how an animal with dozens of eyes processes visual information, we analysed the responses of the bay scallop Argopecten irradians to both static and rotating visual stimuli. We found A. irradians distinguish between static visual stimuli in different locations by directing their sensory tentacles towards them and were more likely to point their extended tentacles towards larger visual stimuli. We also found that scallops track rotating stimuli with individual tentacles and with rotating waves of tentacle extension. Our results show, to our knowledge for the first time that scallops have both spatial resolution and spatial vision, indicating their sensory-motor circuits include neural representations of their visual surroundings. Exploring a wide range of animals with distributed visual systems will help us learn the different ways non-cephalized animals convert sensory input into behavioural output.
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