In this paper,we reported the differences in susceptibility to insecticides between adults and larvae of housefly, Musca domestica (L.),and the mechanisms for the differences.The larvae of housefly were much more to...In this paper,we reported the differences in susceptibility to insecticides between adults and larvae of housefly, Musca domestica (L.),and the mechanisms for the differences.The larvae of housefly were much more tolerant to insecticides than the adults,and the tolerance ratio to cyhalothrin was as high as 205.5 for susceptible strain.Mechanism studies showed that higher GST activity was associated with higher insecticide tolerance in the larvae.The co\|toxicity coefficient of the mixture of cyhalothrin and methylene dithiocyanate(4∶1) on pyrethroid\|resistant houseflies was 188.展开更多
Mycotoxins are toxic secondary metabolites produced by filamentous fungi that are commonly detected as natural contaminants in agricultural commodities worldwide.Mycotoxin exposure can lead to mycotoxicosis in both an...Mycotoxins are toxic secondary metabolites produced by filamentous fungi that are commonly detected as natural contaminants in agricultural commodities worldwide.Mycotoxin exposure can lead to mycotoxicosis in both animals and humans when found in animal feeds and food products,and at lower concentrations can affect animal performance by disrupting nutrient digestion,absorption,metabolism,and animal physiology.Thus,mycotoxin contamination of animal feeds represents a significant issue to the livestock industry and is a health threat to food animals.Since prevention of mycotoxin formation is difficult to undertake to avoid contamination,mitigation strategies are needed.This review explores how the mycotoxins aflatoxins,deoxynivalenol,zearalenone,fumonisins and ochratoxin A impose nutritional and metabolic effects on food animals and summarizes mitigation strategies to reduce the risk of mycotoxicity.展开更多
文摘In this paper,we reported the differences in susceptibility to insecticides between adults and larvae of housefly, Musca domestica (L.),and the mechanisms for the differences.The larvae of housefly were much more tolerant to insecticides than the adults,and the tolerance ratio to cyhalothrin was as high as 205.5 for susceptible strain.Mechanism studies showed that higher GST activity was associated with higher insecticide tolerance in the larvae.The co\|toxicity coefficient of the mixture of cyhalothrin and methylene dithiocyanate(4∶1) on pyrethroid\|resistant houseflies was 188.
基金funded by Natural Sciences and Engineering Research Council of Canada and Alltech Inc,KY,US[532378-18].
文摘Mycotoxins are toxic secondary metabolites produced by filamentous fungi that are commonly detected as natural contaminants in agricultural commodities worldwide.Mycotoxin exposure can lead to mycotoxicosis in both animals and humans when found in animal feeds and food products,and at lower concentrations can affect animal performance by disrupting nutrient digestion,absorption,metabolism,and animal physiology.Thus,mycotoxin contamination of animal feeds represents a significant issue to the livestock industry and is a health threat to food animals.Since prevention of mycotoxin formation is difficult to undertake to avoid contamination,mitigation strategies are needed.This review explores how the mycotoxins aflatoxins,deoxynivalenol,zearalenone,fumonisins and ochratoxin A impose nutritional and metabolic effects on food animals and summarizes mitigation strategies to reduce the risk of mycotoxicity.
