from Wiktionary, Creative Commons Attribution/Share-Alike License

  • abbr. Abbreviated form of didymosphenia geminata.


Sorry, no etymologies found.


  • Jeff Dillon, regional fisheries biologist for the Idaho Department of Fish and Game, says the single-celled organism with the scientific name didymo will have to be watched.


  • The problem is that the porous material can carry invasive species such as didymo to other waterways.

    WCAX - Local News

  • The pants are designed for shallow wading, and the non-felt boots comply with Trout Unlimited’s plea (along with many state game departments) to not wear felt-bottomed shoes, so you don’t inadvertently carry invasive species such as didymo or rock snot to other, uninfected waters.

    Gear Review: Cloudveil Wading Pants and 8x Felt-Free Wading Boots

  • Maryland's Department of Natural Resources plans to prohibit wading with felt soles starting March 21 after discovering that "rock snot," or didymo -- a type of algae that coats riverbeds in thick mats -- thrives in the shoes' damp fibers and hitches a ride from one body of water to another.

    Footwear blamed for 'rock snot' invasion of Md. streams

  • The spread of didymo from Maryland's Gunpowder Falls in 2009 to the Savage River last year appears clearly linked to "shoes of the fishermen," said Jonathan McKnight, a biologist with the Maryland Division of Natural Resources.

    States start banning felt-sole waders

  • That's what's believed to have happened in Vermont, where felt-soled footwear is suspected in the spread of didymo, a slimy algae also called rock snot, says Shawn Good, a fisheries biologist with the state Fish and Wildlife Department.

    States start banning felt-sole waders

  • Elsewhere:•The Idaho Legislature passed a resolution April 7 that stopped short of banning felt soles but spelled out the "harmful and catastrophic potential threat" posed by didymo and other aquatic invaders, with felt soles singled out as a dangerous host.

    States start banning felt-sole waders

  • Rock Snot, a colloquial term, is an algae known by its scientific name, didymo.

    Archive 2005-10-01

  • Maryland fishery regulators say didymo, short for Didymosphenia geminata, can smother aquatic insect larvae such as mayflies, stoneflies and caddis flies that are favored food for trout.

    The Seattle Times

  • Similar bans will take effect April 1 in Vermont and next year in Alaska, aimed especially at didymo, a type of algae that coats riverbeds with thick mats of yellow-brown vegetation commonly called "rock snot."

    Yahoo! News: Business - Opinion


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