The effects of temperature, salinity and a simulated tidal cycle on the toxicity of fenitrothion to Callinectes sapidus.
The 96 hr LC50 for Callinectes sapidus exposed to fenitrothion at 22 degrees C and a salinity of 34 ppt (parts per thousand) was estimated to be 8.6 micrograms/l with a 95% confidence interval of 7.4-9.9 micrograms/l. Acute toxicity was shown to increase with increasing temperature as well as increasing salinity. Exposure of Callinectes to a simulated tidal cycle of 17 ppt salinity change at 6 hr intervals increased the acute toxicity of fenitrothion to Callinectes. The autotomization response in Callinectes was shown to be affected at subacute exposure levels as low as 0.1 microgram/l.
Johnston
J J
JJ
Corbett
M D
MD
D000818:Animals; D003386:Brachyura / Q000502:physiology*; D002940:Circadian Rhythm; D005278:Fenitrothion / Q000032:analysis / Q000633:toxicity*; D007928:Lethal Dose 50; D012965:Sodium Chloride / Q000494:pharmacology*; D013696:Temperature
D012965:Sodium Chloride; D005278:Fenitrothion