Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 24-11-2015, 13:46   #31
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,771
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Malaria

RIGHT NOW, HERE in WEST COAST mexico , the realities are chikingunya and dengue.
real and current dangers.
i have seen no one recently contracting malaria HERE but chikungunya yes and dengue yes.
__________________

zeehag is offline   Reply With Quote
Old 24-11-2015, 15:58   #32
Senior Cruiser
 
StuM's Avatar

Cruisers Forum Supporter

Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43
Posts: 6,713
Re: Malaria

Quote:
Originally Posted by Muckle Flugga View Post
Well… perhaps. DDT was getting fairly close. Perhaps this is what your idea is based upon? The trouble is that DDT was killing ALL the insects. This was precipitating an extraordinary environmental catastrophe. By the 1970s raptor numbers were critically low in many areas and there were many other drastic effects. Eliminate mostquitoes? Perhaps… but at what collateral cost?

I think you are being a little hasty in suggesting this.
I see some people still believe Rachel Carson's garbage.
__________________

__________________
StuM is offline   Reply With Quote
Old 24-11-2015, 17:06   #33
Moderator
 
JPA Cate's Avatar

Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 10,685
Re: Malaria

Another source of information is the International Association of Medical Assistance for Travelers. You can join for a small donation, and annually, they will send you information about the diseases for which mosquitoes are the vectors, and how to avoid being bitten, which varies worldwide.

Their main thrust is that there are so very many nasty diseases spread by mosquitoes, physical prophylaxis (Screens, bed nets, long sleeved shirts and long pants, DEET on exposed areas of skin) constitute one's primary defense. The effective prophylactic drugs have nasty side effects both for the user, and to the place you visit where (since the malarial parasites soon become immune to the drug) poor people will just die from the drug resistant strain. Morally and physically, it is in your best interest to focus on the easy, physical practices that will keep you safe.

Ann
__________________
Ann, with Jim, aboard US s/v Insatiable II, in Oz, very long term cruisers
JPA Cate is offline   Reply With Quote
Old 24-11-2015, 20:45   #34
Registered User
 
Muckle Flugga's Avatar

Join Date: Apr 2008
Location: Aboard the Ocean wave
Boat: 55' sloop.
Posts: 1,426
Re: Malaria

Quote:
Originally Posted by StuM View Post
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:

http://www.worldometers.info/world-population/

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:

http://www.ncbi.nlm.nih.gov/pubmed/19253040

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?
__________________
‘Structural engineering is the art of modeling materials we do not wholly understand into shapes we cannot precisely analyse as to withstand forces we cannot properly assess in such a way that the public at large has no reason to suspect the extent of our ignorance.’
Muckle Flugga is offline   Reply With Quote
Old 24-11-2015, 22:15   #35
Registered User
 
Muckle Flugga's Avatar

Join Date: Apr 2008
Location: Aboard the Ocean wave
Boat: 55' sloop.
Posts: 1,426
Re: Malaria

Quote:
Originally Posted by StuM View Post
I see some people still believe Rachel Carson's garbage.
That said, I am not necessarily opposed to its use in domestic environments, such as sprayed onto the walls of dwellings. I reallise it was a64pilot who suggested the idea of using cropdusters for indiscriminate spraying, so some of the above may not relate to you. Broad spraying of DDT is definitely not a good idea, however. Above all this is because it is a persistent and indiscriminate killer or all arthropods.
__________________
‘Structural engineering is the art of modeling materials we do not wholly understand into shapes we cannot precisely analyse as to withstand forces we cannot properly assess in such a way that the public at large has no reason to suspect the extent of our ignorance.’
Muckle Flugga is offline   Reply With Quote
Old 24-11-2015, 22:28   #36
Registered User
 
GoingWalkabout's Avatar

Join Date: Jan 2015
Location: USA & Argentina
Boat: In the market for a Lagoon 56 (seems like the perfect fit)
Posts: 1,477
Re: Malaria

Quote:
Originally Posted by boatman61 View Post
Seem to remember a hastily buried article in 81about US scientists messing around with the immune system of mosquitos in Africa back around 79-81.. in an attempt to erdicate Malaria..
AID's erupted in Africa around the same time .. though the popular claim is that it was created by Gays anyone with a grain of common sense would remember that men have been shagging each other for millenia without this virus raising its head before.
������
I heard from a very reliable source that it started with monkey's. Then some gay fella in the bush got lonely and horny and spent some time in the trees with a primate. He went back to his village and made out a few months later with a gay visiting tourist from San Francisco. The rest is history. I am absolutely and 100% sure that the person who told me this was a close friend of the primate abuser.

Now as for crop dusting the planet with DDT to stop mosquito bites I think it is so 60's. By the 70's they developed that orange spray stuff that seemed to work so well in Vietnam. I'm sure they could come up with a stronger biochemical agent for this century. Maybe we could put some purple coloring in it and call it agent purple. See what is needed is bigger and better instant biochemical devastation agents.

And one last thought. Our new agent purple could be an improvement on the old agent orange stuff. Quicker leaf killing. It would be great for use on the Amazon. Just think of all those C02 creating trees we could eliminate. Along of course with all those pesky mosquitos. Like killing 2 birds with one stone. A cure for maleria and stopping global warming from Co2 emissions all in one global spray.
__________________
GoingWalkabout is offline   Reply With Quote
Old 25-11-2015, 07:19   #37
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Malaria

Quote:
Originally Posted by GoingWalkabout View Post
Just think of all those C02 creating trees we could eliminate.
Uh, trees CONSUME CO2 and release oxygen.

Pretty much all of the rest of your post was deeply misinformed too.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 25-11-2015, 09:14   #38
cat herder, extreme blacksheep
 
zeehag's Avatar

Cruisers Forum Supporter

Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 17,771
Images: 56
Send a message via Yahoo to zeehag Send a message via Skype™ to zeehag
Re: Malaria

wondered how long it would take ....
zeehag is offline   Reply With Quote
Old 25-11-2015, 09:41   #39
Registered User
 
GoingWalkabout's Avatar

Join Date: Jan 2015
Location: USA & Argentina
Boat: In the market for a Lagoon 56 (seems like the perfect fit)
Posts: 1,477
Re: Malaria

Quote:
Originally Posted by colemj View Post
Uh, trees CONSUME CO2 and release oxygen.

Pretty much all of the rest of your post was deeply misinformed too.

Mark
Forgive my tongue in cheek humor. :big grin: On the Co2.

I assume you are familiar with the equatin of photosynthesis - carbon dioxide is one of the reactants, and oxygen is one of the products. Hence plants produce oxygen in photosynthesis. The energy obtained by this process is used in cellular respiration, the equation being the reverse of that of photosynthesis - hence now carbon dioxide is the product. In conclusion, plants produce both CO2 AND O2 (gas)
__________________
GoingWalkabout is offline   Reply With Quote
Old 25-11-2015, 14:58   #40
Freelance Delivery Skipper..
 
boatman61's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2010
Location: UK/Portugal
Posts: 20,210
Images: 2
Send a message via Skype™ to boatman61
Re: Malaria

Quote:
Originally Posted by Going Walkabout View Post
Forgive my tongue in cheek humor. :big grin: On the Co2.

I assume you are familiar with the equatin of photosynthesis - carbon dioxide is one of the reactants, and oxygen is one of the products. Hence plants produce oxygen in photosynthesis. The energy obtained by this process is used in cellular respiration, the equation being the reverse of that of photosynthesis - hence now carbon dioxide is the product. In conclusion, plants produce both CO2 AND O2 (gas)
Wind ups often fall flat on CF.. a lot of very serious sailors here..😂😂😂
boatman61 is offline   Reply With Quote
Old 25-11-2015, 15:10   #41
Registered User
 
GoingWalkabout's Avatar

Join Date: Jan 2015
Location: USA & Argentina
Boat: In the market for a Lagoon 56 (seems like the perfect fit)
Posts: 1,477
Re: Malaria

Quote:
Originally Posted by boatman61 View Post
Wind ups often fall flat on CF.. a lot of very serious sailors here..������
Some people just don't know how to laugh. Gee. Perhaps there should be a thread on why are some BO so uptight. :-)
__________________

__________________
GoingWalkabout is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 11:44.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.