A report on the results of a study of varying levels of ammonia treatments effectiveness against "Prymnesium Parvum" toxic blooms and its effect on the Striped Bass being raised at the fish hatcheries tested.
Date: October 2012
Creator: Wyatt, Thomas A.; Barkoh, Aaron & Schlechte, J. Warren
This is a 3-year period study comparing fish production data to determine if filling ponds immediately after stocking fry would have a negative impact on production compared to filling ponds after feed training.
This document provides data about controlling "Prymnesium parvum cell density and ichthyotoxicity." It also provides information about stabilizing pH levels in "striped bass Morone saxatilis culture ponds." (p. 2).
This documnet "presents an approach for accelerating community succession using native aquatic plant fonder colonies. By ensuring that propagules, such as seed or plant fragments, are present in sufficient numbers when conditions are suitable for natural establishment, the time required for vegetative colonization to occur is shortened...Recommendations for production of suitable propagules include their growth requirements, operation of production facilities, and selection of different propagule types by species. Recommendations for establishment of these propagules in reservoir ecosystems include site selection, season of establishment, planting techniques, defining individual phases of an establishment project and monitoring and adaptive management after species are introduced." (p. v).
"This study, which took place during the winters of 2008 and 2009, surveyed Prymnesium parvum concentrations in the tidal portion of ten Texas rivers: the Sabine, Trinity, Brazos, Colorado, Lavaca, Guadalupe, Aransas, Nuecus, Arroyo Colorado, and Rio Grande. No P.parvum were found in 2008. That winter proved to be atypical, as the warm, wet weather my have prohibited large-scale inland blooms. In 2009, the typical large inland blooms returned and P.parvum were present at two intertidal locations along the Texas coast, the Arroyo Colorado and the Brazos River. Because the species is primarily an estuarine organism in other parts of the world, there is concern over the possibility of P.parvum entering and blooming in Texas estuaries."
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