Mayfly metamorphosis: Adult winged insects that molt

Research output: Contribution to journalComment/debate

Abstract

Mayflies (order Ephemeroptera), insects favored as food by freshwater fish and as models for the artificial lures of fly fishers, live double lives. During their immature (nymphal) stages, they pursue an underwater career for 1 y or 2 y, molting their cuticular exoskeleton on numerous occasions as they grow. As in other insects, their future wings grow only slowly, but, as maturity approaches, the organs of flight grow rapidly, and the adult insect emerges from the water in a completely different form than the nymph. All winged hexapods (Pteryogota) undergo a metamorphosis of more or less this kind, but mayflies are unique among living insects in having more than one winged developmental stage (1), the final imago or adult instar being preceded by a short-lived subimago (called by anglers a “dun”) (Fig. 1). A paper in PNAS by Kamsoi et al. (2) now presents a molecular analysis of the hormonal and cellular control of metamorphosis in a model ephemeropteran species, Cloeon dipterum, casting fresh light on the evolutionary significance of the mayfly subimaginal stage.
Original languageEnglish
Article numbere2114128118
JournalProceedings of the National Academy of Sciences of the United States of America
Volume118
Issue number38
DOIs
Publication statusPublished - 21 Sep 2021

ASJC Scopus subject areas

  • General

Cite this