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The problem that exists in the Susquehanna River is far more ominous than nutrient pollution. Smallmouth bass are intersexed, they are dying from opportunistic infections that suggest immune incompetence and now they are displaying abnormal collections of melanin (black pigment) which could represent cellular dysplasia (melanoma/cancer)or hormonal dysregulation of melanin deposition. These three problems suggest chemicals in the water that could present significant public health risks for people eating the fish and using the water for drinking and recreation. While nutrient pollution can indeed damage the environment, chemical endocrine disruptor pollution has greater potential consequences for public health.
The problems need immediate and aggressive evaluation and this impaired watershed needs to be cleaned up now.

William L. Yingling M.D.

You raise some excellent points, Dr. Yingling.

Endocrine disrupting chemicals are indeed a suspect in the intersex problems among the smallmouth bass in the Susquehanna and other rivers, although exactly which chemicals and what their sources are remain unclear.

The kinds of pollution limits being contemplated as part of a possible impairment listing and Clean Water Act Total Maximum Daily Load for the river typically do not include endocrine discruptors -- such as drugs or herbicides or soaps -- so perhaps an updating of the standards are needed.

Die Probleme müssen sofort und aggressiv Bewertung und dies beeinträchtigte Wasserscheide muss sich jetzt gereinigt werden.

It simply thus happens that lawyers are exceedingly smart at asking and answering queries.

It is very important to take good care of the environment because it has its own way of getting back to us.

You have heard the message by now: Melanoma is deadly. You also probably know that it is the fastest growing cancer in the United States and that one American every hour dies from melanoma. Millimeter for millimeter, it is the deadliest cancer. Rather than bore you with statistics on this horrid disease, allow me to share with you some fascinating background you may not have heard before.

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Hi Tom Pelton. I need your permission to publish the above article in a book I am writing. I would appreciate it. My email is You may see the book if you like. Thanks.

Paul Thomas

1. Publication-Bay Daily
2. Writer/Photographer-Not applicable
3. Date of publication- May 02, 2012
4. Headline/Caption- Not applicable
5. Name of publisher-Chesapeake Bay Foundation
6. Title- Smallmouth Bass Epidemic Highlights Need for Pollution Limits in Susquehanna River
7. Author- Tom Pelton
8. Print run-1,000
9. Date book will publish-2014

A British-Australian research team has just found coral trout living on the south side of the Great Barrier Reef sporting dark skin lesions. Fifteen percent of the affected populations at two sites bore brown-black growths, some of them raised and almost scablike.

Whatever afflicts the Australian fish, the problem didn’t emerge until 2010. That’s when a reef biologist studying sharks happened to notice dark patches on neighboring coral trout. The observation prompted the researchers to deliberately hook 136 of these fish between August 2010 and February 2012.

As pathologists when we say melanoma, there are certain things we need to see — like local invasiveness,” explains Wolfgang Vogelbein of the Virginia Institute of Marine Science in Gloucester Point. He's referring to where cells begin migrating from the initial tumor toward blood vessels, from which they can serve as seeds for new cancers throughout the body.

These lesions could reflect some hormonal abnormality or pre-cancerous transformation triggered by water contaminants, she says. Those blotches might even be the equivalent of sun burn from ultraviolet radiation penetrating unusually deeply into the water. “We just don’t know,” she says. “It’s something we need to investigate more.”

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