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Pesticide

Pesticide

(Science: pharmacology) A chemical which is used to kill unwanted organisms such as rats, insects, nematodes, etc.

pesticides often act as nerve poisons, and they are hazardous to animals and humans (some pesticides can cause nerve or liver damage, birth defects and cancer).

See: [[biological Magnification and herbicide]]. A chemical used to kill pests (as rodents or insects).A type of chemical that causes harm to the health of so called 'pests'.

The concentration of pesticides is much greater in the organisms that eat the plants sprayed in pesticide. The concentration of pesticide becomes larger as you move further up the food chain.


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Flowers' selective pressure on plant-eating insects

... think I've heard it mentioned before that the evolution of flowers was driven by their effect on curtailing the tendency towards the evolution of pesticide resistance in insects, rather than primarily a mechanism for improved sexual reproduction. In effect, this may have actually been the primary ...

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by expuddle
Tue Jul 09, 2013 1:48 pm
 
Forum: Evolution
Topic: Flowers' selective pressure on plant-eating insects
Replies: 2
Views: 2576

Phosphate bioavailability in soil

EPA regulates pesticides - and the point was an EPA-approved pesticide (that means anything sold) has been shown to work and, with directions and cautions, hs satsified EPA re. safety for the user and the environment. You can try ...

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by JorgeLobo
Mon Mar 26, 2012 12:49 am
 
Forum: Botany Discussion
Topic: Phosphate bioavailability in soil
Replies: 9
Views: 5038

Effect of Chemical spillage on ecology

"the living wil die " I'd not dramatize the effect. We dont know the toxicity of this "pesticide" or it's solubility - both of which will be important to understanding acute and chronic affect. We do know it's "lipophilic" so can expect bioconcentration. ...

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by JorgeLobo
Sat Dec 03, 2011 7:42 pm
 
Forum: Ecology
Topic: Effect of Chemical spillage on ecology
Replies: 4
Views: 3886

Effect of Chemical spillage on ecology

... for the "most affected". The information offers the focus of contamination, the initial vector for spread (water flow) and that the pesticide is lipophilic - has an affinitiy for lipid/fat thereby probably persistent and accumulative. Lipophilic in this context does not necessarily ...

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by JorgeLobo
Sun Nov 27, 2011 2:26 pm
 
Forum: Ecology
Topic: Effect of Chemical spillage on ecology
Replies: 4
Views: 3886

Effect of Chemical spillage on ecology

... fish species in the area, one that lives in the river, and one that lives in the fish ponds. You know that Chemical X is a chlorinated, lipophilic pesticide. You also know that the waterbirds in the area consume primarily fish. (a) What do you think will be the most likely distribution of Chemical ...

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by biologynewhand
Mon Nov 21, 2011 12:21 am
 
Forum: Ecology
Topic: Effect of Chemical spillage on ecology
Replies: 4
Views: 3886
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