Is the spread of viruses from mosquitoes significant?
wayne.conlan at nrc.ca
Tue Jun 25 14:03:37 EST 2002
When blood sucking insects inject anti-coagulants etc. where exactly are
these substances deposited? I'd always assumed that the stuff the bug
injects into the host was deposited extravascularly, otherwise it would
be rapidly swept away and its effects rapidly neutralized. In other
words, these parasite-derived substances are delivered intracutaneously
rather than intravenously.
> There does not seem to be any evidence that partially fed mosquitos
> inject blood. The blood meal is in the stomach and anything injected
> is from the salivary glands so, for example, malaria parasites after
> developing in the gut of the mosquito migrate to the salivary gland
> to be injected along with anti-coagulant and anesthetizing chemicals.
> So, no, no blood is injected.
> Martin Weiss, Ph.D.
> Director of Science
> New York Hall of Science
> 47-01 111 th Street
> Corona, New York 11368
> phone: 718 699 0005 x 356
> facsimile:718 699 1341
> mweiss at nyhallsci.org
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