Trophic Substances in a Blind Cave Crayfish

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Science  01 Jul 1960:
Vol. 132, Issue 3418, pp. 44-45
DOI: 10.1126/science.132.3418.44


The eyestalks, supraesophageal ganglia, and circumesophageal connectivesof the blind cave crayfish Orconectes pellucidus australis contain a red pigment-concentrating substance and a distal retinal pigment light-adapting one. Assays were performed on the dwarf crayfish, Cambarellus shufeldti. Thesignificance of these findings is discussed in relation to endocrine regulation of pigmentary effectors in crayfishes.