Originally Posted by StuM
I see some people still believe Rachel Carson's garbage.
I see some people still cling to an extremely simplistic "kill everything" idea about our approach to complex problems.
DDT is a persistent
and extremely toxic
poison which, once deployed, remains in an area from months to many years.
DDT (dichlorodiphenyltrichloroethane) - humans, body, used, water, plants, chemical, animals, parts
DDT - Toxipedia
From which: "...However, DDT is indeed toxic. It has a disastrous effect on a variety of freshwater and marine beings. It was found to cause eggshell thinning in birds, especially eagles and hawks, which caused decreased reproductive rates. Sweden banned DDT in 1970, and the U.S. banned it in 1972, after months of hearings, because of environmental concerns. Though its negative effects on wildlife are axiomatic, its effects on humans are not as clear. DDT is linked with cancer, endocrine disruption, and reproductive and developmental effects. … As mentioned above, DDT is an organochloride insecticide. It is a persistent environmental contaminant and its widespread use has resulted in worldwide contamination. DDT can be stored in all tissue but is found most prominently in fats. With its long half-life - 10 years - and its widespread use, no living organism may be considered DDT free (#Turoslav, et al, 2002). DDT has been found in all birds and fish tested from the most arid deserts to the deepest seas. It is estimated that it would take 10 to 20 years for an individual to become DDT free, even if all DDT exposures could be avoided during that time. In fish-eating birds, such as falcons and eagles, DDT causes eggshell thinning, which leads to difficulties in hatching and lower birth rates. High levels of DDT also cause reproductive problems in fish.
It is an indiscriminate killer, and wipes out populations of all
insects it comes into contact with. It is lipid soluble (but not water
soluble so it can't wash away in the rain) and so it accumulates in the fatty tissues of animals
which eat insects that have come into contact with and absorbed the poison.
So… your answer amounts to this: snakebites for the human population of tha Amazon are a problem> one may solve the problem by deforesting and burning the habitats of the snakes. Snakebites will certainly be reduced!
You suggest blanket spraying in a carpet bombing style of DDT from crop duster type aircraft, and yet this would certainly
kill a very wide variety of insects quite apart from mosquitoes. Are you aware that bee populations are threatened worldwide? Do you think that carpet bombing the whole world with DDT would be a good way to approach that problem as well? You are aware that insects and arthropods in general are indeed vital elements in the ecosystem, no?
Don't you think it is time as a race
we stopped trying to solve our problems by just killing everything
? After all:
I have been a lifelong lover of raptors in particular, and erstwhile falconer. I am acutely
aware of the fact that until the DDT bans in the mid 1970s populations of falcons were CRASHING wherevery DDT use was widespread, and recovered steadily and dramatically since that period, a fact I have witnessed directly over the course of my lifetime. Frankly whether or not this was directly linked to DDT (and the removal
of that persistent poison has coincided exactly with a dramatic recovery in raptor populations), the general effect of DDT is extremely deleterious on arthropod populations at a minimum
or else it wouldn't work, would it?
However don't be too quick to dismiss this connection. This review article appears clear that there is indeed an eggshell thinning effect and population decline for Raptors:
The much trumpedted "increases" in "bird populations" during the period of use of DDT may be related to decline in raptor numbers.
You appear to be an evangelist for this pesticide. Do you dismiss all
concerns about it as, what, voodoo? So you think the worldwide ban
is just a bunch of politicians having a laugh based on a single
book in the 1970s? Of course all of that is "garbage", eh?