Recently sequenced Daphnia pulex genome has some surprises:

  • Daphnia pulex has a tiny genome containing only 200 million base pairs (compared to 3 billion in humans), yet has 31,000 genes within it (cf. humans have only 23,000 genes). 
  • Roughly a third of Daphnia pulex genes are unique to this species and many of these genes are duplicated (twice the frequency of C. elegans)

For more information on the Daphnia genome see the Daphnia Genomics Consortium

or contact the UNH, Hubbard Center for Genome Studies (HCGS)

Taxonomic Key Progress
  • Version 5.0 of the zooplankton key was released in May 2013. As we have begun to add species from across the country, the key was renamed to An Image-based Key to the Zooplankton of North America to reflect the broader coverage of species the key now has.
  • A brief key to the micro-invertebrates of woodland vernal pools (Northeast, USA) has also been implemented as part of the image-based taxonomic key series.
  • The PhycoKey (directed by Dr. Al Baker) allows users to view and identify phytoplankton and other microscopic objects found in marine and freshwaters.
  • An interactive key is currently under development for the stream macroinvertebrates of New Hampshire. The Stream Key is available online as Beta Version 1.0. If you have any suggestions or comments please direct your inquiries to Amanda Murby.

Taxonomic Keys can be accessed through the home page of the Center for Freshwater Biology (cfb.unh.edu)

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