monocrotophos and bifenthrin

monocrotophos has been researched along with bifenthrin* in 2 studies

Other Studies

2 other study(ies) available for monocrotophos and bifenthrin

Article	Year
Acute and chronic toxicity of organophosphate monocrotophos to Daphnia magna. Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 2009, Volume: 44, Issue:1 The acute and chronic toxicity of monocrotophos (MCP), the binary joint toxicity of MCP and bifenthrin (BF), and sodium dodecyl benzene sulfonate (SDBS) to Daphnia magna (D. magna) was evaluated. The 24 h-median effective concentration (24 h-EC(50)) and 48 h-median lethal concentration (48 h-LC(50)) of MCP towards D. magna were 161 and 388 micro g/L, respectively. In addition, the lowest-observed effective concentration (LOEC) and non-observed effective concentration (NOEC) of MCP to D. magna were 10 and 5 micro g/L, respectively. Furthermore, the chronic value (ChV) of MCP against D. magna was 7 micro g/L and the acute chronic ratio (ACR) was 55. The number of offspring per female and the intrinsic rate of natural increase (r) were identified as the parameters that were most sensitive to MCP. In addition, toxic unit (TU) analysis was employed to evaluate the joint toxicities. The calculated TU(mix) values of binary equitoxic mixtures of MCP + BF and MCP + SDBS were 1.47 and 1.63, respectively, which suggests that both equitoxic mixtures exert a limited antagonistic effect. The results of this study revealed that the toxic threshold of MCP towards D. magna is higher than its reported highest residue (4 micro g/L) in the ordinary aquatic environment, and that concurrent exposure to BF or SDBS may exert a slight antagonistic effect. Topics: Animals; Benzenesulfonates; Daphnia; Insecticides; Monocrotophos; Organophosphates; Pyrethrins; Toxicity Tests, Acute; Toxicity Tests, Chronic; Water Pollutants, Chemical	2009
Toxicological studies of organophosphate and pyrethroid insecticides for controlling the fruit fly Dacus ciliatus (Diptera: Tephritidae). Journal of economic entomology, 2001, Volume: 94, Issue:5 The fruit fly Dacus ciliatus Loew is a pest of the fruits of many cucurbit species. We studied the effect of organaophosphate and pyrethroid compounds on the adult flies by using surface contact and oral administration. In contrast to other fruit flies, we found that organophosphates were ineffective against D. ciliatus. This was supported by the insignificant decrease of head acetylcholinesterase activity. All tested pyrethroids showed satisfactory killing ability, rapid and massive knockdown effect, and prevention of oviposition. Piperonyl butoxide considerably increased the toxicity of pyrethroids, which can be explained by oxidase detoxification of these compounds in D. ciliatus. It can be concluded that pyrethroids have high potential for controlling D. ciliatus. Topics: Acetylcholinesterase; Animals; Biological Assay; Dimethoate; Diptera; Female; Fertility; Insect Control; Insecticides; Malathion; Male; Monocrotophos; Organothiophosphorus Compounds; Phosphoramides; Pyrethrins	2001

Article

Year

Acute and chronic toxicity of organophosphate monocrotophos to Daphnia magna.

Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 2009, Volume: 44, Issue:1

The acute and chronic toxicity of monocrotophos (MCP), the binary joint toxicity of MCP and bifenthrin (BF), and sodium dodecyl benzene sulfonate (SDBS) to Daphnia magna (D. magna) was evaluated. The 24 h-median effective concentration (24 h-EC(50)) and 48 h-median lethal concentration (48 h-LC(50)) of MCP towards D. magna were 161 and 388 micro g/L, respectively. In addition, the lowest-observed effective concentration (LOEC) and non-observed effective concentration (NOEC) of MCP to D. magna were 10 and 5 micro g/L, respectively. Furthermore, the chronic value (ChV) of MCP against D. magna was 7 micro g/L and the acute chronic ratio (ACR) was 55. The number of offspring per female and the intrinsic rate of natural increase (r) were identified as the parameters that were most sensitive to MCP. In addition, toxic unit (TU) analysis was employed to evaluate the joint toxicities. The calculated TU(mix) values of binary equitoxic mixtures of MCP + BF and MCP + SDBS were 1.47 and 1.63, respectively, which suggests that both equitoxic mixtures exert a limited antagonistic effect. The results of this study revealed that the toxic threshold of MCP towards D. magna is higher than its reported highest residue (4 micro g/L) in the ordinary aquatic environment, and that concurrent exposure to BF or SDBS may exert a slight antagonistic effect.

Topics: Animals; Benzenesulfonates; Daphnia; Insecticides; Monocrotophos; Organophosphates; Pyrethrins; Toxicity Tests, Acute; Toxicity Tests, Chronic; Water Pollutants, Chemical

2009

Toxicological studies of organophosphate and pyrethroid insecticides for controlling the fruit fly Dacus ciliatus (Diptera: Tephritidae).

Journal of economic entomology, 2001, Volume: 94, Issue:5

The fruit fly Dacus ciliatus Loew is a pest of the fruits of many cucurbit species. We studied the effect of organaophosphate and pyrethroid compounds on the adult flies by using surface contact and oral administration. In contrast to other fruit flies, we found that organophosphates were ineffective against D. ciliatus. This was supported by the insignificant decrease of head acetylcholinesterase activity. All tested pyrethroids showed satisfactory killing ability, rapid and massive knockdown effect, and prevention of oviposition. Piperonyl butoxide considerably increased the toxicity of pyrethroids, which can be explained by oxidase detoxification of these compounds in D. ciliatus. It can be concluded that pyrethroids have high potential for controlling D. ciliatus.

Topics: Acetylcholinesterase; Animals; Biological Assay; Dimethoate; Diptera; Female; Fertility; Insect Control; Insecticides; Malathion; Male; Monocrotophos; Organothiophosphorus Compounds; Phosphoramides; Pyrethrins

2001