English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Among the curious eyes found in nature is that of a little known marine crustacean, Copilia, a copepod, which is about X 1 X 3 mm. This copepod is found in the Mediterranean and Caribbean Seas. In 1963, while we were working on crustacean eyes at the Zoological Research Station, Naples, Italy, Professor J. Z. Young brought to our attention this animal and its unusual eyes. Only the female of the species possesses these remarkable eyes which make up more than half of its transparent body. The eye of Copilia (Mediterranean) was described in 1879 by Grenacher (6) and in 1891 by Exner (1) who made measurements of its optical system. Recently Vaissire (8, 9) and Gregory (3, 4) and his collaborators (5) have made studies of the eye and the behavior of Copilia. Each eye appears as the single ommatidium of a compound eye (sometimes referred to as ocelli in copepods) with a corneal lens, crystalline cone, and retinula cells that form its rhabdom (Figs. 1 and 4). The rhabdom lies in a pigmented stem that oscillates back and forth (Fig. 4). It seemed important to learn more about the optics and imaging properties of such scanning eyes and also to see by electron microscopy how the rhabdom and its rhabdomeres are structured in comparison to other arthropod visual systems (1, 12).

THE EYE STRUCTURE AND OPTICAL SYSTEM OF THE CRUSTACEAN COPEPOD, COPILIA