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  1. #11
    Join Date
    Sep 2007
    Posts
    1,360

    Default Re: The lifespan of mayflies getting shorter

    There is a theory that they hatch more often at night now.
    Certainly it would explain why we do not seem to see sufficient duns hatching in the days to explain the still huge numbers of spinners dancing in the evenings.
    This could be a temperature driven change.
    Trout fishermen revere the trout; trout, on the other hand, unaware of their sublime standing in man's world, revere nothing, including man, a creature they seem to view with special contempt. Nihilism is a rare trait in fish but trout are full of it. The old men liked that.

  2. #12

    Default Re: The lifespan of mayflies getting shorter

    I did a sampling on the River Windrush yesterday on our club waters. As locals will know the river has for several years is always coloured. Imagine my surprise when I had 4 mayfly nymphs in the tray. All around the 8 m/m length.

  3. #13
    Join Date
    May 2006
    Location
    North East Wales
    Posts
    11,368
    Blog Entries
    2

    Default Re: The lifespan of mayflies getting shorter

    Quote Originally Posted by MrP View Post
    There is a theory that they hatch more often at night now.
    Certainly it would explain why we do not seem to see sufficient duns hatching in the days to explain the still huge numbers of spinners dancing in the evenings.
    This could be a temperature driven change.
    Or it's an accumulation of several days dun hatch coming to lay eggs when conditions are good.
    “There is no more lovely country than Monmouthshire in early spring. Nowhere do the larks sing quite so passionately, as if somehow inspired by the Welsh themselves. There is a blackbird on every thorn and a cock chaffinch, a twink as they call him there, on every bush...... It moved me profoundly. I had been spared to see another spring, and I thank God for it.”

    Oliver Kite
    “A Spring Day on the Usk”
    A Fisherman’s Diary

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