Cooperative Fish and Wildlife Research Units Program: Texas
Education, Research and Technical Assistance for Managing Our Natural Resources

Texas Project


Influence of Environmental Variables on Growth of Toxigenic Golden Alga (Prymnesium parvum): A Laboratory Test of Field-Generated Hypotheses

July 2015 - May 2020


Personnel

Participating Agencies

  • Texas Tech University

Prymnesium parvum (golden alga) is a harmful algal species that has caused serious ecological damage to inland aquatic habitats worldwide and in the USA, especially the southwest. While much field research has been conducted to characterize environmental factors associated with golden alga blooms, the information generated has been mostly descriptive and insufficient to fully understand what triggers or facilitates these blooms. Based on an experimental approach, this study's purpose is to test the validity of several hypotheses about environmental factors responsible for driving golden alga range expansion or bloom formation. This study constitutes the dissertation research of a unit graduate student (R. Rashel) and is supported by Texas Tech University and Texas Parks and Wildlife Department resources. The information obtained is anticipated to reveal cause-effect associations between specific environmental variables and golden alga growth and to inform efforts to predict and control toxic blooms.

Research Publications Publication Date
Rashel, R., Patiño, R. 2017. Influence of genetic background, salinity, and inoculum size on growth of the itchthyotoxic golden alga (Prymnesium parvum). Harmful Algae 66: 97-104. https://doi.org/10.1016/j.hal.2017.05.010 2017-06-30
Rashel, R.H. and Patiño, R. 2019. Growth response of the ichthyotoxic haptophyte, Prymnesium parvum Carter, to changes in sulfate and fluoride concentrations. PloS One 14(9): e0223266. | Publisher Website 2019-09-30
Presentations Presentation Date
Rashel, R. Patiño, R. 2015. Influence of salinity, sulfate, and fluoride on growth of Golden Alga. Annual Conference, Texas Tech University Association of Biologists, Lubbock, Texas. 2015-03-12
Rashel, R.H., Patiño, R. 2015. Influence of Salinity, Sulfate, and Fluoride on Growth of Golden Alga. 145th Meeting of the American Fisheries Society, Portland, Oregon. 2015-08-17
Rashel, R.H., Patiño, R. 2015. Influence of Salinity, Sulfate, and Fluoride on Growth of Golden Alga. 145th Meeting of the American Fisheries Society, Portland, Oregon. 2015-08-17
Rashel, R., Patiño, R. 2016. Influence of salinity and other water quality variables on growth of the ichthyotoxic golden alga. Texas Chapter of the American Fisheries Society, Kerrville, Texas 2016-01-21
Rashel, R., Williams, L.D., Patiño, R. 2017. Association between the ratio of organic to inorganic nitrogen and growth of the invasive and itchthyotoxic golden alga. 20th International Conference on Aquatic Invasive Species, Fort Lauderdale, Florida. 2017-10-22
Rashel, R., Williams, L.D., Patiño, R. 2017. The ratio of organic to inorganic nitrogen affects the growth of itchthyotoxic golden alga. Annual Meeting of the Texas Chapter of the American Fisheries Society, Corpus Christi, Texas. 2017-01-20
Rashel, R.H., Patiño, R. 2018. Associations between the ratio of organic to inorganic nitrogen and growth of the ichthyotoxic golden alga. Texas Chapter of the American Fisheries Society, College Station, Texas. 2018-01-26
Rashel, R.H., Williams, L.D., Patiño, R., 2017. Modifying the ratio of organic to inorganic nitrogen affects the growth of invasive and ichthyotoxic golden alga. 16th Annual Graduate School Poster Competition, Texas Tech University. Lubbock, Texas 2017-03-23
Rashel, R.H., Williams, L.D., Patiño, R., 2017. The ratio of organic to inorganic nitrogen affects the growth of ichthyotoxic golden alga. Texas Tech Seventh Annual Biological Sciences Symposium, Lubbock, Texas. 2017-04-07
Rashel, RH, Patiño, R. 2018. Associations between the ratio of organic to inorganic nitrogen and growth of the ichthyotoxic golden alga. International Aridlands Conference, Lubbock, Texas, August 13-14, 2018. 2018-08-13