PAN Pesticides Database - Chemical Toxicity Studies on Aquatic Organisms

Acute Aquatic Ecotoxicity Summaries for Fenthion on Insects

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 50 of 59
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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?

Insects

Yellow fever mosquito Aedes aegypti 27.9 24.9 36 Very Highly Toxic  
Mosquito Aedes albopictus 10.5 1.50 2 Very Highly Toxic  
Mosquito Aedes atropalpus 3.00 - 1 Very Highly Toxic  
Mosquito Aedes canadensis 1.20 - 1 Very Highly Toxic  
Mosquito Aedes cantans 2.70 - 1 Very Highly Toxic  
Mosquito Aedes communis 3.50 - 1 Very Highly Toxic  
Mosquito Aedes excrucians 3.20 - 1 Very Highly Toxic  
Mosquito Aedes nigromaculis 6.80 - 1 Very Highly Toxic  
Mosquito Aedes punctor 5.70 - 1 Very Highly Toxic  
Floodwater mosquito Aedes sticticus 0.50 - 1 Very Highly Toxic  
Mosquito Aedes taeniorhynchus 1.81 - 1 Very Highly Toxic  
Mosquito Aedes vexans 2.90 1.20 2 Very Highly Toxic  
Mosquito Anopheles albimanus 30.0 - 1 Very Highly Toxic  
Mosquito Anopheles freeborni 7.23 1.49 9 Very Highly Toxic  
Mosquito Anopheles gambiae 8.35 2.45 2 Very Highly Toxic  
Mosquito Anopheles sp. 65.5 - 1 Very Highly Toxic  
Mosquito Anopheles stephensi 20.2 18.0 9 Very Highly Toxic  
Caddisfly Brachycentrus sp. 20.0 - 3 Very Highly Toxic  
Caddisfly Ceratopsyche morosa 2,000 866.0 4 Moderately Toxic Outlier 
Phantom midge Chaoborus sp. 12.0 - 1 Very Highly Toxic  
Alderfly Chauliodes sp. 12.5 7.50 2 Very Highly Toxic  
Midge Chironomus crassicaudatus 16.0 - 1 Very Highly Toxic  
Midge Chironomus decorus 668.4 690.3 5 Highly Toxic  
Midge Chironomus salinarius 7.80 - 1 Very Highly Toxic  
Midge Chironomus sp. 58.0 - 1 Very Highly Toxic  
Rice bloodworm Chironomus tepperi 159.4 - 1 Highly Toxic  
Midge Chironomus utahensis 280.0 - 1 Highly Toxic  
Midge Chironomus yoshimatsui 64.5 38.5 2 Very Highly Toxic  
Mayfly Cloeon sp. 10.0 3.00 2 Very Highly Toxic  
Midge Cricotopus sp. 54.8 47.3 4 Very Highly Toxic  
Mosquito Culex antennatus 90.0 - 1 Very Highly Toxic  
Mosquito Culex fatigans 3.83 1.72 6 Very Highly Toxic  
Mosquito Culex nigripalpus 5.17 2.15 2 Very Highly Toxic  
Northern house mosquito Culex pipiens 2.40 - 1 Very Highly Toxic  
House mosquito Culex pipiens fatigans 3.79 1.89 11 Very Highly Toxic  
Mosquito Culex pipiens molestus 3.80 - 1 Very Highly Toxic  
Mosquito Culex pipiens pipiens 2.33 1.32 3 Very Highly Toxic  
Mosquito Culex pipiens quinquefasciata 6.20 3.64 3 Very Highly Toxic  
Southern house mosquito Culex quinquefasciatus 28.7 24.1 19 Very Highly Toxic  
White dotted mosquito Culex restuans 1.10 - 1 Very Highly Toxic  
Mosquito Culex tarsalis 2.50 2.19 3 Very Highly Toxic  
Mosquito Culex tritaeniorhynchus 22.5 16.9 2 Very Highly Toxic  
Midge Culicoides sp. 10.8 - 1 Very Highly Toxic  
Midge Culicoides variipennis 19.7 6.36 2 Very Highly Toxic  
Mosquito Culiseta annulata 5.00 - 1 Very Highly Toxic  
Midge Dicrotendipes californicus 70.5 39.5 2 Very Highly Toxic  
Mayfly Drunella grandis 25.0 - 1 Very Highly Toxic  
Midge Glyptotendipes paripes 11.0 - 1 Very Highly Toxic  
Midge Goeldichironomus holoprasinus 140.0 - 1 Highly Toxic  
Golden stonefly, Willow fly Hesperoperla pacifica 7.03 5.83 9 Very Highly Toxic  
Records 1 to 50 of 59
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