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Male Bass in Potomac Producing Eggs

Shakrai writes "The Washington Post is carrying a story about how male bass in the Potomac river are actually producing eggs. The source of this interesting phenomena is currently unknown. Scientists are speculating that it may have something to do with chicken estrogen left over in manure or perhaps even human hormones dumped in the river from sewage treatment plants. Scientists aren't sure if the affected fish are still able to reproduce and the long-term repercussions of this find are unknown."

15 of 52 comments (clear)

  1. Oh no! by Dr.+Spork · · Score: 3, Funny

    Does this mean male geeks might find a way to perpetuate themselves after all? Well, the article didn't say the eggs could be fertilized, but... what if... your mother and father would be the same fish!

  2. Re:WTF? by Shakrai · · Score: 2, Interesting

    This has got to be one of the strangest things i've ever heard of. lol

    I dunno. When I read the part about "human hormones" possibly being to blame I immediately thought of unused birth control pills/patches being to blame. I told my girlfriend not to flush her used patch down the toilet the last time we stayed in WV.... ;)

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  3. shock by Anonymous Coward · · Score: 3, Funny

    I'm surprised they could even catch the fish, let alone examine them. All of their equipment should have dissolved instantly upon impact with the Potomac. Why just the other day...[sniff]...poor little ducks...

  4. Hollywood just announced... by mbonig · · Score: 3, Funny

    Arnold Schwarzenegger has already made a statement: "This is not right, I'm the only male capable of reproduction!" and then he announced his plans to unleash a army of cybernetic robots to eliminate anybody 'treading on [his] turf'...

  5. It's all your fault. by Dr.+Bent · · Score: 2, Interesting

    Scientists are speculating that it may have something to do with chicken estrogen left over in manure or perhaps even human hormones dumped in the river from sewage treatment plants.

    Why is it that strange behavior (or what seems strange to us) is always seen as unnatural, and somehow our fault? Even the people looking into this case seem to be jumping to the conclusion that it is a pollutant, but in the same sentance they say that they don't really know what's causing it.

    IIRC, there are a few species of amphibians that spontanously change gender when there's not enough of the opposite sex around. Evolutionarily speaking, fish and amphibians aren't that different, so why would you jump to the conclusion that that it's a pollutant? Maybe the people investigating this have some evidence to support that theory, but that wasn't mentioned in the article. Actually, the last two paragraphs go on to explain this this section of river has done "well on most aspects of water-quality testing" and that it is "one of our highest-quality fisheries".

    Maybe it's a disease. Maybe it's a mutation. Maybe these particular bass cross bred with some frogs. Nobody can say for sure at this point, but they sure can speculate that it's all our fault. And that's just bad science.

    1. Re:It's all your fault. by hal9000 · · Score: 3, Insightful

      I just think the scientists are going on the set of facts available:

      o Male fish producing eggs.
      o Only observed in Potomac.
      o Potomac is polluted as all get out.

      They're going on what they know. It's not like their being dishonest by concluding that pollution is the culprit without enough evidence. They've come right out and said, we don't know, but this is our best guess.

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    2. Re:It's all your fault. by yabbo · · Score: 2, Insightful

      Why is it "bad science" to speculate that this bizarre phenomenon is our fault? While I do gather from the article that they only suspect that these male fish producing eggs is a result of pollution, can any good ever come of polluting the environment with poultry manure or "processed sewage" ?

      Even the people looking into this case seem to be jumping to the conclusion that it is a pollutant, but in the same sentance they say that they don't really know what's causing it.

      I don't know exactly which sentence you read, but I believe the statement (from the article):

      "But they say the exact culprit is still unknown:..." means that they don't know which pollutant is causing the malfunction; not whether or a pollutant was involved at all.

      Obviously there is a real possibility that this is a biological "miracle", and that it's completely natural behaviour. But read the article carefully and you'll discover that the only reason this behaviour was caught was that they were examining fish who had died "en masse" with lesions on their bodies. I'm no biologist, but that doesn't seem like natural behaviour.

  6. Fish aren't the only things with this problem.... by rubberbando · · Score: 4, Informative

    Here is an article showing it happening to other species.

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  7. Bass Ale by Omega1045 · · Score: 2, Funny

    As long as this does not impact Bass Ale production, I am fine with it.

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  8. I would have thought sewage in the Potomac... by zeno53 · · Score: 2, Funny

    ... would have been mostly of the male bovine variety. All very amusing unless you happen to be a bass. Or drink water.

  9. Yeah, it's a new SPECIES! by Linux_ho · · Score: 3, Interesting

    Maybe it's a disease. Maybe it's a mutation. Maybe these particular bass cross bred with some frogs. Nobody can say for sure at this point, but they sure can speculate that it's all our fault. And that's just bad science.

    Yeah, the Potomac is famous for its purity. So despite the fact that it walks like a duck, and quacks like a duck, in all probability it is actually a fish-frog hybrid.

    It's not as if we have any scientific evidence that human-created pollutants like chemicals released by common household plastics can produce weird hormonal reactions in humans and animals. By the way, please stop chewing on your pen, Bobby.

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  10. Re:WTF? by Kobal · · Score: 4, Informative

    Actually, used birth control pills count here. Oestrogens are sulfo-conjugated, and then eliminated in urine. By the way, premarin is nothing else than equine sulfo-conjugated oestrogens.
    Other oestrogenic endocrine disruptors include soy products (esp. after metabolization of genistein and daidzein into equol by the intestinal flora), heavy metals (esp. Cadmium; though I suspect hair metal could have some effect along the same line), many phytosanitary chemicals (DDT was a prime exemple, but atrazine and pyrethrenoids aren't bad either), as well as a whole lot of chemicals containing one or several phenol groups.

  11. But did you ask if it was NORMAL? by Engineer-Poet · · Score: 4, Interesting
    Sex-changing in fish is sufficiently unusual that discoveries of species which do it make the scientific literature. If it was normal in bass, we'd certainly have learned about it long before now.

    In this case, it's much worse than that. The fish's testicular tissue is claimed to have produced eggs, but you might notice that the article didn't mention anything about the morphological changes required to become a functioning female. If you began producing ova in your nuts would that make you female in any meaningful sense of the word, or just ill?

    This phenomenon needs to be analyzed, the cause identified and stopped. If we don't do this, we're going to lose things starting with the fish, and continuing up to ourselves - and if this doesn't worry you, spend some time looking up the literature on hormone mimics, phthalate and the other disturbing stuff that gets to us in eerie ways like leaching out of baby bottles.

  12. Aquaman can do more than just talk with fish! by manual_overide · · Score: 2, Funny

    Scientists are speculating that it may have something to do with chicken estrogen left over in manure or perhaps even human hormones dumped in the river from sewage treatment plants.

    I, for one, welcome our new fishman overlords!

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  13. They Dropped Us The Hormones by boatboy · · Score: 3, Funny

    All your bass are belong to us.