4218 x 3677 px | 35,7 x 31,1 cm | 14,1 x 12,3 inches | 300dpi
Data acquisizione:
11 febbraio 2012
Ubicazione:
SOUTHERN INDIA
Altre informazioni:
The dog flea (Ctenocephalides canis) is a species of flea (Siphonaptera) that lives primarily on the blood of dogs. The dog flea is troublesome because it can spread Dipylidium caninum. They are commonly found in Europe. Although they feed on the blood of dogs and cats, they sometimes bite humans. They can live without food for several months, but females must have a blood meal before they can produce eggs. They can deliver about 4000 eggs on the host's fur.[ The eggs go through four lifecycle stages: embryo, larva, pupa, and imago (adult). This whole life cycle from egg to adult takes from two to three weeks, although this depends on the temperature. It may take longer in cool conditions. In an allergic reaction, the immune system overreacts and produces antibodies to a substance that it would normally tolerate. Flea allergy dermatitis (FAD) is the leading cause of itching in dogs. Adult fleas require a blood meal in order to reproduce. However, they do not usually remain on the dog except when they are feeding. When they feed, they inject a small amount of saliva into the skin. Proteins in the saliva cause an intensely itchy response to sensitive dogs. "A single fleabite can cause itching for days." Dogs with FAD do not have to be infested with fleas to be itchy. In fact, a single fleabite can cause itching for days.
