Biology of Blood-Sucking Insects - download pdf or read online

By M. J. Lehane (auth.)

Blood-sucking bugs are the vectors of a number of the such a lot debilitating parasites of guy and his domesticated animals. they also are of substantial direct price to the rural via losses in milk and meat yields, and during harm to hides and wool, and so forth. So, no longer unusually, many books of clinical and veterinary entomology were written. almost all these texts are equipped taxonomically giving the main points of the life-cycles, bionomics, courting to sickness and financial significance of every of the insect teams in flip. i've got taken a distinct strategy. This e-book is subject led and goals to debate the organic subject matters that are universal within the lives of blood-sucking bugs. to do that i've got focused on these features of the biology of those interesting bugs which were truly changed not directly to fit the blood-sucking behavior. for instance, i've got mentioned feeding and digestion in a few aspect simply because feeding on blood provides bugs with detailed difficulties, yet i have never mentioned breathing since it isn't really affected in any specific means by means of haematophagy. certainly there's a subjective point within the number of issues for dialogue and the burden given to every. i'm hoping that i have never allow my enthusiasm for specific matters get the higher of me on too many events and that the subject matter achieves an total balance.

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2. Why should the mosquitoes of one area bite man so regularly and mosquitoes of the same species in another area bite him so infrequently? Although it was suggested that the mosquitoes were actually changing in their relative attractions for man and domesticated animals (particularly pigs, horses and cattle) no such change could be demonstrated experimentally. It is now widely accepted that the switch from man to animals was a response to the changing proportions of human and non-human hosts available.

It is simple, but expensive (up to US $4 per sample) as a lot of anti era is required. It is relatively insensitive. 07 per ample) . This gave the best res ults of all the methods tested in the WHO interlaboratory trial of 1986--7. 19 FEEDING PREFERENCES OF BLOOD-SUCKING INSECTS 3 Counter-current immunoelectrophoresis A relatively difficult test to perform but is good for the identification of small blood meals and mixed blood meals. 4 Haemagglutination A difficult but very sensitive assay. The inhibition assay based on this technique is good for distinguishing between blood meals from closely related species.

4 Haemagglutination A difficult but very sensitive assay. The inhibition assay based on this technique is good for distinguishing between blood meals from closely related species. 5 Latex agglutination Potentially this is a very simple, cheap and rapid technique, but it is currently not widely used because of problems with the stability of the antibody-coated polystyrene particles. 6 Complement fixation A difficult and relatively insensitive assay. 7 Enzyme-linked immunosorbent assay (ELISA) This is a simple and sensitive technique.

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