PCBs Killing Belugas: Can We Find a Cure?

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In summary, PCBs (Poly-Chlorinated biphenyls) are highly toxic and carcinogenic chemicals that are causing the deaths of beluga whales. These chemicals are fat soluble and easily accumulate in the bodies of belugas due to their diet and thick layer of fat. While the full extent of their impact on belugas is not fully understood, it is known that PCBs can interfere with reproduction and have been linked to decreased fertility and lifespan in other cetaceans such as orcas. Although they have been suggested as a potential cure for cancer, the negative effects of PCBs on marine mammals far outweigh any potential benefits.
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elementerystu
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so i heard PCBs (Poly-Chlorinated biphenyls) are killing belugas because they are fat saluble and carcenigenic(correct my spelling for me) so pretty much they're dying from cancer right? so could we use them to find a cure for cancer?
 
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  • #2
PCBs are fat soluble and belugas get quite a dose because they eat crustanceans which live on the bottom of polluted rivers and so build up a lot of nasty chemicals.

Belugas seem to be fairly insenstive to the amount of chemicals they absorb. How carcinogenic PCBs are is not very well established.
 
  • #3
beluga whales are cetaceans - porpoises, whales, orcas, and company.

The point is that PCB's interfere with reproduction in a lot of these mammals. These mammals concentrate PCB's because of two reasons:
1. they eat near or at the top of the food chain
2. they have a thick layer of subcutaneous fat for insulation.

The problem for these mammals does not appear to be cancer, although PCB's are carcinogenic in mice, for example. Dead orcas in areas around Puget Sound are treated as a hazmat item because PCB's concentrations are high, and those with highest PCB levels do not reproduce well and tend to die younger.

Since you don't seem to be a scientist here is a newspaper version of what I'm talking about:
http://seattlepi.nwsource.com/local/69418_whale07.shtml
 
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FAQ: PCBs Killing Belugas: Can We Find a Cure?

What are PCBs and how do they affect beluga whales?

PCBs (polychlorinated biphenyls) are a group of synthetic chemicals that were once widely used in industry. They are now banned in most countries due to their harmful effects on the environment and wildlife. When released into the water, PCBs accumulate in the bodies of beluga whales and can disrupt their hormones, immune system, and reproductive abilities.

Why are beluga whales particularly vulnerable to PCBs?

Beluga whales are at the top of the food chain in their marine ecosystem, which means they consume large quantities of prey that have already accumulated PCBs in their bodies. This process, known as bioaccumulation, results in higher concentrations of PCBs in beluga whales compared to other marine animals. Additionally, beluga whales have a slow metabolism and thick blubber, which makes it difficult for them to eliminate these toxins from their bodies.

Is there a cure for PCB poisoning in beluga whales?

At this time, there is no known cure for PCB poisoning in beluga whales. However, researchers are studying potential treatments that could help mitigate the effects of PCBs on these animals. These treatments may include dietary supplements and specialized care in rehabilitation facilities.

Can we prevent PCBs from harming beluga whales in the future?

While PCBs are no longer being produced, they still exist in the environment and can continue to harm beluga whales and other marine life. The most effective way to prevent further harm is by reducing the amount of PCBs that are released into the environment. This can be achieved through strict regulations and proper disposal of PCB-containing products.

How can the general public help in the effort to save beluga whales from PCBs?

There are several ways the general public can help in the effort to save beluga whales from PCBs. This includes supporting organizations that work towards protecting marine life, reducing personal use of plastic and other products that contain PCBs, and properly disposing of hazardous materials. Additionally, individuals can educate themselves and others about the harmful effects of PCBs on beluga whales and advocate for stricter regulations to prevent further contamination of our oceans.

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