Mayflies: Ephemeroptera - Mayflies And People
water larval changes
Because of their sensitivity to changes in the water, larval mayflies are often used by scientists as indicators of water quality. Their presence or absence in ponds, lakes, streams, and rivers may give evidence of changes in water temperature, oxygen levels, or chemical pollution. Mayflies are also popular with fly fishermen. They make lures called "flies" that imitate the forms of both adult and larval mayflies, using them instead of living bait to get fish to bite.
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