How are some mayfly nymphs adapted for burrowing in sand or silt?
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mayfly
An adult mayfly (Ephemera vulgata) in Europe.
Mayfly nymphs that inhabit silt or sand are specifically adapted for burrowing through modifications to their anatomy. In these species, both the legs and the jaws are structurally altered to facilitate digging into the substrate.1
These adaptations allow the nymphs to navigate and reside within the sediment, contrasting with other species that possess flattened bodies designed for clinging to bottom materials in swift currents or entering narrow crevices.1