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Vision Index for Isopod Crustacea related to Latitude and Depth

Abstract

THERE has been no systematic study of the distribution of eye-bearing and blind benthic crustaceans in relation to the depth of the sea at which they occur. It has, however, been known for many years1 that many deep-sea isopods are blind and it has also been known that most intertidal species have well developed eyes2. We have examined the bathymetric range of many species of isopods in order to determine the correlation between presence or absence of eyes, latitude, depth and light penetration. To do this we have developed a visual or ocular index.

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MENZIES, R., GEORGE, R. & ROWE, G. Vision Index for Isopod Crustacea related to Latitude and Depth. Nature 217, 93–95 (1968). https://doi.org/10.1038/217093a0

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