Biology
Although there are over 2000 species of flea, the most
common is the cat flea. Despite its name, (and preference) it is adaptable and
is found living on both cats and dogs. Occasionally they bite humans when
desperate for a blood meal to provide protein for egg production. Several
hundred eggs are laid during a female's lifetime. Small, white and smooth, the
eggs freely drop off to cause infestation in areas frequented by the host.
White, legless larvae hatch and feed on food debris, skin scales and the
blood-rich faeces of the adult fleas. About two weeks later, the larvae spin a
silken cocoon, pupate and await the vibrations that signify the passing of a
prospective host. This may explain why hordes of fleas appear "on cue" when you
enter your home after being away on holidays. Nevertheless, fleas can remain in
virtual hibernation in the pupal stage for up to a year and still survive.
Adult fleas have flattened bodies and they move easily through dense hair or
fur. Each of the six legs has a pair of claws at the tip to enable them to
remain attached regardless of scratching. The hind legs are well developed for
jumping onto a passing host. A flea population builds up rapidly. With female
fleas laying hundreds of eggs, most of which proceed through the larval and
pupal stages to adult, and with a spring and early summer life cycle as short
as 21 days, a "plague of fleas" is an almost yearly occurrence.
Diseases and Fleas
The black or bubonic plague of the Middle Ages and even
modern times is a disease transmitted by fleas biting humans after they have
bitten rats. Another disease transmitted by flea activity is murine typhus.
Fleas are also responsible for a variety of problems ranging from simple
itching to allergic skin reactions and the spread of tapeworms.
Management
Successful management of this pest depends on a variety
of factors including familiarity with flea biology and habits, skilled
inspection techniques, informed pesticide selection and careful application
methods. If practicable, floors and any furnishings used by pets should be
vacuum cleaned before treatment. As vacuuming will sometimes stimulate the
pupae to emerge as adult fleas, the vacuum cleaner bag contents should be
disposed of immediately. Very effective products - including insect growth
regulators - of low toxicity to mammals are available for application by our
professional Pest Managers. Application to flea harbourages, particularly the
areas where pets rest of sleep, will eliminate resident flea populations.
To reduce the risk of reinfestation, pet bedding should be washed
or replaced and the pet treated with an appropriate product on the advice of
your veterinarian.