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Spectral sensitivity of locust compound eyes a comparative study 2. electro retinogram spectral sensitivity

, : Spectral sensitivity of locust compound eyes a comparative study 2. electro retinogram spectral sensitivity. Acta Physiologica Sinica 35(1): 9-15

The electroretinogram spectral sensitivity of 9 locust spp. was recorded under dark, blue or orange light adaptation. The dark-adapted spectral sensitivity of all 9 spp. peak at about 520-546 nm. Light adaptation produced peak shifts and increased relative sensitivity in the blue region, probably due to migration of screening pigment. The compound eyes of 2 spp., Euprepocnemis sp. and Oxya sp., had no externally visible black and white stripes. Under orange adaptation, their spectral sensitivity curves revealed a 2nd peak in the blue region, while blue adaptation depressed blue sensitivity. These 2 spp. probably have 2 visual pigments. The compounds eyes of Phlaeoba sp. and Patanga sp. had distinct black and white stripes. Chromatic adaptation produced the least effects on their spectral sensitivity, and there is no evidence showing the existence of more than 1 visual pigment.

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