| pubmed-article:6493588 | pubmed:abstractText | Melatonin, a well-known pineal substance implicated in conveying photoperiodic information in vertebrates, appears also to be present in the compound eyes of an insect, the locust. The identification of melatonin in the eyes of an invertebrate suggests that it may be an evolutionary conservative molecule, principally involved in the time transduction of photoperiodic information in all living organisms. | lld:pubmed |
