How was malaria eliminated in the US? You read about the draining of wetlands to get rid of mosquitoes, but anyone who's spent the summer in Georgia or Florida (or the Adirondacks, for that matter) will testify that there are plenty of mosquitoes around! Their population was reduced but not eliminated; however, malaria WAS eliminated and not just reduced. So what happened?
Jane joseph gathman wrote: > Thanks, but this article doesn't really answer the > question. > > The article states, "While the failure to feed that > occurs through repellency may also provide enough > selection pressure to engender resistance, this > phenomenon has never been documented and must be > examined further." > > I can still see a selection mechanism that might > confer local resistance: if some mosquitoes that > aren't very susceptible to the repellent effect come > along, they will succeed in feeding on humans, while > all the other mosquitoes may fly further afield > seeking animal hosts. Over time, there could be > local, village-based populations that feed on humans, > and non-village populations that don't. Call it > "spatial selection" or something. > > Joe > >> From: Ashwani Vasishth <[EMAIL PROTECTED]> >> Subject: Re: DDT question >> >> The actual research article is at: >> >> > http://www.plosone.org/article/fetchArticle.action?articleURI=info:doi/10.1371/journal.pone.0000716 >> For those who don't have access to Nature, a news >> summary is at: >> >> > http://www.scidev.net/content/news/eng/ddt-repels-rather-than-kills-mosquitoes.cfm >> Cheers, >> - >> Ashwani >> Vasishth [EMAIL PROTECTED] >> (818) 677-6137 >> http://www.csun.edu/~vasishth/ >> http://www.myspace.com/ashwanivasishth > > > > > ____________________________________________________________________________________ > Got a little couch potato? > Check out fun summer activities for kids. > http://search.yahoo.com/search?fr=oni_on_mail&p=summer+activities+for+kids&cs=bz > > -- ------------- Jane Shevtsov Ecology Ph.D. student, University of Georgia co-founder, <http://www.worldbeyondborders.org>World Beyond Borders Check out my blog, <http://perceivingwholes.blogspot.com>Perceiving Wholes "In the long run, education intended to produce a molecular geneticist, a systems ecologist, or an immunologist is inferior, both for the individual and for society, than that intended to produce a broadly educated person who has also written a dissertation." --John Janovy, Jr., "On Becoming a Biologist"
