PAN Pesticides Database - Chemical Toxicity Studies on Aquatic Organisms

Acute Aquatic Ecotoxicity Summaries for Fenthion on Zooplankton

Use(s): Insecticide, Avicide    Chem Class: Organophosphorus    U.S. EPA PC Code:053301    CAS Number: 55-38-9
Sorted by Organism Group, Scientific Name and LC50. Species summary toxicity data are derived from the U.S. EPA AQUIRE database.
Records 1 to 11 of 11
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Common Name Scientific Name Avg Species LC50 (ug/L) LC50 Std Dev Number of Studies Avg Species Rating Outlier Result for Organism Group?

Zooplankton

Calanoid copepod Acartia tonsa 616.7 154.3 3 Highly Toxic Outlier 
Opossum shrimp Americamysis bahia 0.39 0.20 8 Very Highly Toxic  
Water flea Ceriodaphnia dubia 1.72 0.19 2 Very Highly Toxic  
Water flea Daphnia magna 50.0 - 1 Very Highly Toxic  
Water flea Daphnia pulex 45.3 74.5 6 Very Highly Toxic  
Scud Gammarus fasciatus 165.0 55.0 2 Highly Toxic  
Scud Gammarus lacustris 12.4 2.39 5 Very Highly Toxic  
Scud Gammarus pulex 24.0 15.6 3 Very Highly Toxic  
Water flea Moina macrocopa 7.80 - 1 Very Highly Toxic  
Grass shrimp,freshwater prawn Palaemonetes kadiakensis 31.2 50.1 10 Very Highly Toxic  
Daggerblade grass shrimp Palaemonetes pugio 7.10 2.40 2 Very Highly Toxic  
Records 1 to 11 of 11
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