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Fish Kill Sites
Golden Alga, P. parvum Cells
Video of Cells
These short (mpeg) video images were captured by Greg Southard in the TPWD lab using a Olympus DP-70 camera on a Olympus BX-51 compound light microscope utilizing differential interference contrast (DIC) optics. All images below were viewed at 1000X total magnification. In order to view them you will need Windows Media Player® or other mpeg player software. (see Downloading Information)
The condition of the cells
These videos are all representative of P. parvum when it is not “blooming” and/or causing toxic conditions. These videos are depicting P. parvum in a non-toxic phase or during the end of a bloom. Capturing P. parvum on film when it is toxic and causing a bloom has been difficult as it tends to move around much faster under those conditions.
NOTE: These videos have been formatted for web viewing; if you have an interest in viewing these videos at a higher quality level than feasible through the website, please contact Greg Southard, TPWD fisheries biologist: (512) 353-3492 or email firstname.lastname@example.org
Golden Alga Video #1
This is a short video with little movement (some morphological shape changes may be seen in the cell) of the organism except for the flagella and haptonema (see Biology of Golden Alga) which are whipping back and forth quite actively.
View video #1 (file size: 387 KB)
Golden Alga Video #2
This video shows a P. parvum cell rotating slightly and the action of the flagella and haptonema.
View video #2 (file size: 117 KB)
Golden Alga Video #3
This video shows and identifies a P. parvum cell among a mixed culture of other organisms.
View video #3 (file size: 120 KB)
Would you like to know more?
The Biology of Golden Alga summarizes what we know about the alga and its toxins.
Where does golden alga fit compared to other single-celled organisms?
The Golden Alga Family Tree gives examples of and information about golden alga and other protists.
What does golden alga look like?
TPWD Golden Alga Images has photos of fish kills, golden algal cells, and short videos of live golden alga. These images may be used for noncommercial/educational purposes as long as TPWD is given credit and other site policies are followed.
Golden Alga Information Card: TPWD has collaborated with the Texas Commission on Environmental Quality and other entities to produce a golden alga information card. Download a PDF from the TCEQ website or request a free hard copy from TPWD at email@example.com.