PAN Pesticides Database - Chemical Toxicity Studies on Aquatic Organisms

Acute Aquatic Ecotoxicity Summaries for Malathion on Insects

Use(s): Insecticide    Chem Class: Organophosphorus    U.S. EPA PC Code:057701, 857701    CAS Number: 121-75-5
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 72
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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 324.0 229.8 66 Highly Toxic  
Mosquito Aedes albopictus 308.9 198.2 9 Highly Toxic  
Mosquito Aedes atropalpus 172.0 - 1 Highly Toxic  
Mosquito Aedes cantans 48.8 - 1 Very Highly Toxic  
Mosquito Aedes caspius 4,430 - 1 Moderately Toxic  
Mosquito Aedes communis 38.2 - 1 Very Highly Toxic  
Mosquito Aedes excrucians 30.3 - 1 Very Highly Toxic  
mosquito Aedes hendersoni 66.0 - 1 Very Highly Toxic  
Mosquito Aedes nigromaculis 69.0 1.00 2 Very Highly Toxic  
Mosquito Aedes punctor 44.1 - 1 Very Highly Toxic  
Floodwater mosquito Aedes sticticus 15.5 - 1 Very Highly Toxic  
Mosquito Aedes triseriatus 56.8 8.35 6 Very Highly Toxic  
Mosquito Aedes trivittatus 32.2 - 1 Very Highly Toxic  
Mosquito Aedes vexans 26.1 - 1 Very Highly Toxic  
Mosquito Anopheles albimanus 235.0 115.0 2 Highly Toxic  
Mosquito Anopheles coustani 200.0 - 1 Highly Toxic  
Mosquito Anopheles freeborni 104.5 25.5 2 Highly Toxic  
Mosquito Anopheles gambiae 114.7 57.1 3 Highly Toxic  
Common malaria mosquito Anopheles quadrimaculatus 35.0 34.0 2 Very Highly Toxic  
Mosquito Anopheles sp. 1,237 - 1 Moderately Toxic  
Mosquito Anopheles stephensi 237.9 213.9 15 Highly Toxic  
Caddisfly Arctopsyche grandis 32.0 - 2 Very Highly Toxic  
Snipefly Atherix variegata 917.5 532.5 2 Highly Toxic  
Caddisfly Ceratopsyche morosa 500.0 - 4 Highly Toxic  
Midge family Chironomidae 37.6 - 1 Very Highly Toxic  
Midge Chironomus crassicaudatus 56.0 - 1 Very Highly Toxic  
Midge Chironomus decorus 53.0 22.9 4 Very Highly Toxic  
Midge Chironomus plumosus 86.7 64.9 15 Very Highly Toxic  
Midge Chironomus riparius 297.9 1,642 63 Highly Toxic  
Midge Chironomus sp. 9.80 - 1 Very Highly Toxic  
Midge Chironomus tentans 18,310 17,690 2 Slightly Toxic Outlier 
Rice bloodworm Chironomus tepperi 8.40 - 1 Very Highly Toxic  
Midge Chironomus utahensis 3.67 0.94 3 Very Highly Toxic  
Stonefly Claassenia sabulosa 19.5 21.4 4 Very Highly Toxic  
Mayfly Cloeon sp. 5.50 - 1 Very Highly Toxic  
Midge Cricotopus sp. 56.2 29.0 4 Very Highly Toxic  
Mosquito Culex antennatus 250.0 - 1 Highly Toxic  
Mosquito Culex fatigans 733.7 753.0 31 Highly Toxic  
Northern house mosquito Culex pipiens 243.2 360.2 14 Highly Toxic  
House mosquito Culex pipiens fatigans 19.5 5.64 10 Very Highly Toxic  
Mosquito Culex pipiens molestus 2,357 2,323 2 Moderately Toxic  
Mosquito Culex pipiens pallens 7,004 9,804 3 Moderately Toxic Outlier 
Mosquito Culex pipiens pipiens 37.4 5.20 2 Very Highly Toxic  
Mosquito Culex pipiens quinquefasciata 50.8 24.0 7 Very Highly Toxic  
Southern house mosquito Culex quinquefasciatus 305.0 374.0 77 Highly Toxic  
Mosquito Culex sp. 210.0 - 1 Highly Toxic  
Mosquito Culex tarsalis 507.3 703.3 3 Highly Toxic  
Mosquito Culex tritaeniorhynchus 41.5 20.5 2 Very Highly Toxic  
Midge Culicoides sp. 87.9 - 1 Very Highly Toxic  
Mosquito Culiseta annulata 24.5 - 1 Very Highly Toxic  
Records 1 to 50 of 72
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