Marvin KTProctor R JrFish Bull Vol 66, no 1, pp 163-164 19672010-02-152010-02-151967http://hdl.handle.net/1969.3/23177163-164Red-tide toxicants were evaluated based on the following requirements: 100% lethality to Gymnodinium breve within 24 hours at concentrations of 0.01 p.p.m. or less and a selectivity threshold concentration at 0.1 p.p.m. Chemicals that killed 50% or more of any test organism (juvenile forms of marine species living in Galveston Bay) within 24 hours or below this concentration were rejected. Five chemicals passed these requirements: carbamic acid, dietheyldithio-, tellurrium salt; carbamic acid, dimethyldithio-, ferric salt; disulfide, bis (dithylthiocarbamyl); sulfide, bis (2-hydroxy-3-bromo-5-chlorophenyl)- bis dimethylamino butyne monosalt; sulfide, bis (2-hydroxy-3-bromo-5chlorophenyl)- bis dimethylamino butyne monosalt and sulfide, bis (2-hydroxy-3-bromo-5chlorophenyl)-, cyclohexylamine monosalt.(DBO)Algal bloomsASW,USA,Texas,Galveston BayBaysChemical controlchemicalsEcosystem managementEvaluationGalveston BayHazard assessmentHerbicidesJuvenilesKarenia brevisLaboratoriesLethal effectsLethal limitsmarine organismsMortalityO 1080 Multi-disciplinary StudiesPhytoplanktonPlant controlPoisonous organismsQ1 01461 PlanktonQ1 01485 Species interactions: pests and controlRed tidesTest organismsToxicantstoxicity testsJournal