Wednesday, March 19, 2008

Bush Spotlight :The Bite of The Bushquito

Any similar characteristics is "understandable"

President Bush marked the fifth anniversary of the Iraq war on Wednesday by calling the debate over the conflict "understandable".
" Meanwhile, two of the world's leading humanitarian groups said this week the situation in Iraq leaves little room for optimism.

"Despite claims that the security situation has improved in recent months, the human rights situation is disastrous," Amnesty International says in a report titled "Carnage and Despair: Iraq Five Years On."
According to Bush-Cheney, a success.?

Anopheles freeborni is found in the western United States. It was one of the principal mosquito species transmitting malaria (“vector”) in the United States before the disease was eradicated in 1951. (The other principal vector was An. quadrimaculatus.) The continued presence of both An. freeborni and An. quadrimaculatus means that there is a constant risk that malaria could be reintroduced in the United States. Travelers visiting malaria-endemic countries should take precautions against malaria, to avoid contracting (and bringing back to the United States) a potentially fatal disease. Health-care providers should be alert to the possibility of malaria, to ensure that patients with the disease are diagnosed and treated rapidly, before parasites are spread into the community through the bites of local Anopheles.
Like all mosquitoes, adult anophelines have slender bodies with 3 sections: head, thorax and abdomen.
The head is specialized for acquiring sensory information and for feeding. The head contains the eyes and a pair of long, many-segmented antennae. The antennae are important for detecting host odors as well as odors of breeding sites where females lay eggs. The head also has an elongate, forward-projecting proboscis used for feeding, and two sensory palps.
Anopheles mosquitoes can be distinguished from other mosquitoes by the palps, which are as long as the proboscis, and by the presence of discrete blocks of black and white scales on the wings. Adult Anopheles can also be identified by their typical resting position: males and females rest with their abdomens sticking up in the air rather than parallel to the surface on which they are resting.Understanding the biology and behavior of Anopheles mosquitoes can help understand how malaria is transmitted and can aid in designing appropriate control strategies. Factors that affect a mosquito's ability to transmit malaria include its innate susceptibility to Plasmodium, its host choice and its longevity. Factors that should be taken into consideration when designing a control program include the susceptibility of malaria vectors to insecticides and the preferred feeding and resting location of adult mosquitoes.

One important behavioral factor is the degree to which an Anopheles species prefers to feed on humans (anthropophily).
Only female mosquitoes bite animals and drink blood. Male mosquitoes do not bite, but feed on the nectar of flowers.
Anopheles mosquitoes are the only mosquito which transmits malaria to man.

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