| topical treatment of calves with synthetic pyrethroids: effects on the non-target dung fly neomyia cornicina (diptera: muscidae). | dung from calves treated with synthetic pyrethroids negatively influenced, in varying degrees, survival, reproduction and size of the common dung fly neomyia cornicina (fabricius). this was documented in assays where the coprophagous larvae and adults of n. cornicina were exposed to dung collected from calves dosed with topical preparations of deltamethrin, flumethrin, cyfluthrin, and alpha-cypermethrin. larval mortality was significantly increased in dung collected up to at least seven days aft ... | 2001 | 11260728 |
| pour-on formulation of eprinomectin for cattle: fecal elimination profile and effects on the development of the dung-inhabiting diptera neomyia cornicina (l.) (muscidae). | the plasma and fecal concentrations of eprinomectin were determined in cattle following topical administration at a dose rate of 0.5 mg kg(-1). the maximum plasma concentrations of 12.24 ng ml(-1) occurred 2 d after administration, and eprinomectin remained detectable in plasma 29 d after administration (0.10 ng ml(-1)). the maximum dung concentration of 350 ng g(-1) was observed 3 d after administration and thereafter for at least 29 d (4 ng g(-1)). the amount of drug recovered in dung during t ... | 2005 | 15839552 |
| seasonal abundance and reproductive output of the dung flies neomyia cornicina and n. viridescens (diptera: muscidae). | the seasonal abundance and reproductive output of two common, but little studied, dung-breeding flies, neomyia cornicina and n. viridescens, were examined in artificial cow pats in pastures in southwest england in 2001 and 2004. in 2001, the numbers of both neomyia species increased slowly over summer to show a sharp seasonal peak in late august and early september. there was no significant effect of mean temperature, mean relative humidity or dung water content on abundance or seasonally de-tre ... | 2008 | 18294418 |
| effects of the activity of coprophagous insects on greenhouse gas emissions from cattle dung pats and changes in amounts of nitrogen, carbon, and energy. | effects of coprophagous insects on greenhouse gas emissions from cattle dung pats were investigated during the initial stage in the decomposition of dung, with accompanying changes in nitrogen, carbon, and energy content. we set up three treatments with adults of caccobius jessoensis harold (dung beetle) and larvae of the fly neomyia cornicina (f.): 1) dung with dung beetles; 2) dung with fly larvae; and 3) dung without insects. in these treatments, the gas flux was measured from air flow exitin ... | 2015 | 26308812 |
| measurement of predatory behaviour in cow dung-colonising insect larvae, using compound-specific (13)c-tracing of dietary fatty acids. | studies of the trophic interactions between organisms in opaque environments where direct observation can be difficult, such as soil or leaf litter, often require the use of indirect inferential approaches. here, the use of compound-specific (13)c-tracing of dietary biomarker fatty acids is evaluated as a method for studying predation by larvae of the dung-breeding fly, mesembrina meridiana (diptera: muscidae); the technique was used to differentiate dung from high-enrichment (13)c-labelled prey ... | 2012 | 22844385 |