Ephemera vulgata hatching in Örnsköldsvik


Now the Vulgata hatch is starting in Örnsköldsvik. One of the highlights of the year for all fly fishermen. There are plenty of beautiful fly fishing waters in the municipality of Örnsköldsvik, so you can take your pick.

Here is a brief description of the life cycle of the Mayfly (Ephemera vulgata) from nymph to dun:

Egg: The Mayfly lays its eggs in the water during the summer. The female releases the eggs in clusters that sink and attach to the bottom or vegetation. The eggs are small and oval in shape.

Nymph: After approximately three weeks, the eggs hatch, and the nymphs begin their life in the water. The nymph is larva-like and primarily lives on the bottom of lakes, rivers, and streams. It has a long, slender body and is equipped with strong jaws and gills to breathe underwater. The nymph is usually dark-colored to blend in with its surroundings and avoid predators.

Nymph stage: During the nymph stage, the Mayfly undergoes several moltings. After each molting, the nymph becomes larger and more similar to the adult insect. The nymph lives in the water for several years, feeding on algae, plant material, and small organisms.

Emergence: When the Mayfly is ready to emerge, it swims to the water’s surface. Emergence usually occurs during the evening or night. The nymph climbs onto water plants, rocks, or other objects above the water surface.

Dun: Once the nymph has climbed out of the water, it begins to metamorphose into the adult insect, known as the dun. The dun is the stage when the Mayfly has wings but has not yet fully developed its flying abilities. The dun is soft and light-colored, and it takes a few hours to dry and harden. Flight: When the dun has dried and its wings are ready, it’s time for the Mayfly to take flight. Flight usually occurs during late afternoon or early evening. The Mayfly has a short lifespan as an adult, living only a few days up to a week.

Reproduction: After ascending into the air, the Mayfly flies to bodies of water or other waterways to mate. Mating often occurs in the air over the water. After mating, the female lays her eggs in the water, and the cycle starts again.

Landing trout

Leave a Reply

Your email address will not be published. Required fields are marked *