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Year 2008 Remove constraint 2008: 2008 Subjects mortality Remove constraint mortality: mortality Subjects lethal concentration 50 Remove constraint lethal concentration 50: lethal concentration 50

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1. Assessment of the impact of insecticides on Anagrus nilaparvatae (Pang et Wang) (Hymenoptera: Mymanidae), an egg parasitoid of the rice planthopper, Nilaparvata lugens (Hemiptera: Delphacidae)

Description:: Includes references
Author:: Wang, Huai Yin , Yang, Yang , Su, Jian Ya , Shen, Jin Liang , Gao, Cong Fen , Zhu, Yu Cheng
Subject:: Anagrus , parasitoids , natural enemies , nontarget organisms , Nilaparvata lugens , insect pests , plant pests , insecticides , insecticide residues , toxicity testing , mortality , integrated pest management , risk assessment , lethal concentration 50
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2008

2. Copper Sulfate Toxicity to Channel Catfish Fry: Yolk Sac versus Swim-Up Fry

Description:: Includes references
Author:: Straus, David L.
Subject:: fish culture , fish ponds , Ictalurus punctatus , catfish , copper sulfate , pesticides , water pollution , toxicity testing , bioassays , mortality , lethal concentration 50 , hydrochemistry , pH , water hardness
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2008

3. Copper sulfate toxicity to two isolates of Ichthyophthirius multifiliis relative to alkalinity

Description:: Includes references
Author:: Straus, David L. , Hossain, M. Mozammal , Clark, Theodore G.
Subject:: Ichthyophthirius multifiliis , strains , protozoal infections , parasites , Ictalurus punctatus , catfish , fish culture , copper sulfate , antiparasitic agents , toxicity testing , lethal concentration 50 , mortality , alkalinity
Collection:: Journal Articles, USDA Authors, Peer-Reviewed
Year:: 2008