Upload
petula
View
23
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Endocrine Disruptors. http://www.treehugger.com. Endocrine System. A system of glands which secrete hormones into the bloodstream to regulate the body. . - PowerPoint PPT Presentation
Citation preview
http://www.treehugger.com
EndocrineDisruptors
Endocrine SystemA system of glands which secrete hormones into the bloodstream to regulate the body.
Hormones travel to target tissue and there regulate human functions, including metabolism, growth and development, tissue function, and mood
PCPPsPCPPs, pharmaceuticals and personal care products, include antibiotics and hormones taken by humans (birth control or replacement therapy, cholesterol-lowering drugs such as statins, anti-depressants) as well as veterinary pharmaceuticals used primarily in agriculture. Personal care products include soaps, sunscreens, perfumes and colognes, hair sprays, and other cosmetics that may contain compounds such as musks, oxybenzone, nanomaterials, triclosan, etc., that could haveenvironmental effects.
Pass Through Pollutants
EffectsAlteration Species Effected
Interference with steroid hormones Mammals, reptiles, amphibians, and fish
Sexual dimorphism Rodents, fish, reptiles, birds, marine mammals
Thyroid enlargement Precocious sexual maturation Poor egg survival Low egg thyroid hormone content
Salmon (in the Great Lakes)
Behaviorial changes Reproductive loss Early mortality in offspring
Bird species (in the Great Lakes that feed on Salmon)
Decline in adult yearly survival rate Asymmetrical wing development Altered parental behaviour
Gulls
Decreased thyroid hormone levels Seals, polar bears
Negative effects on plasma progesterone levels and plasma cortisone levels.
Polar bears
Central New York
Ajax Ontario
WWTPDWTP