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Living in Australia there were less ticks for example during the use of DDT, now there are more ticks prevalent here. I am wondering if any insect species have declined permanently as the result of the DDT use, and if some have repopulated disproportionately (compared to populations prior to the use of DDT- if there is such data) since it's cessation of use.

How has the use and subsequent ban of DDT (dichlorodiphenyltrichloroethane) affected insect populations?

Are there any studies on this?

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affected them in what context? –  GriffinEvo Nov 22 '13 at 11:22
    
@GriffinEvo edited , hopefully this is clear, pls advise –  user4693 Nov 22 '13 at 11:25
    
yes good thanks, so comparisons of species diversity/richness, before during and after the use and subsequent ban of ddt. –  GriffinEvo Nov 22 '13 at 14:52

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