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First, Pearl Oysters, Mussels, Mollusks in general (altough I would set aside all Cephalopods -Octopus and Calamari- aside) don't FEEL PAIN. This is hard to explain because we think and feel in Human terms...but let us try to place it in context: These creatures don't have a REAL BRAIN. They don't think (almost like a politician...sorry for the pun, but we are almost in an election year and I am already FED UP!!) and are not conciouss of their existence. They FEEL things: a touch, a gentle probing a deep knife stab...we know because we can see the animal's reaction, but we can't see any intensity (is it worst to be touched than cut?) except in the duration of the stimulus on the animal's tissues (mainly the mantle). Also, they don't have any memory...for us pain can be relieved by remembering, and it is also why we avoid pain. Oysters barely have small nervous ganglions...they are almost like Plants (actually, think of oysters like plants that have a digestive system). Second, PAIN KILLERS AND STITCHING. We have tried stitching the oysters and saw no real improvement (mortality rates were the same, pearl production remained the same). We used medical grade cyanoacrilate (crazy glue). A friend of mine (Héctor Acosta Salmón) stitched his oysters with cat-gut and even inmersed them in Paracetamol (Tylenol)...no differences seen. Doing this adds extra time to the operation itself so it is not good production wise. Third, STRESS is a Fact of Life. This is the real killer. Asides from bacteria and problems during the seeding operation...stress will kill the oysters and if it doesn't kill them it will help produce a low quality pearl. What causes stress? pollution, extreme water temperatures, salinity changes, human handling, disease, lowered food availability... what doesn't cause any stress: love & relationships, child rearing, inflation, politicians, social status. Once more: they don't have brains. |
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| I might point out that it really doesn't matter if you use a nuclei or not to grow a pearl. In the end the reason the oyster coats it is because it is an irritant. Sand, tissue or nuclei. If the oyster had feet it would go to the dentist for an extraction. Well if they had brains |
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Anyway, no one has answered: "Do crabs not have vision because they lack the visual centres of humans?" And: "Do bivalves not feel pain because they lack the brain of a vertebrate?" Slraep |
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| And why is it that when they are mad they clam up? Anger. And why do they lay in bed all day? Depression. And have you ever heard the expression "Happy as a clam"? How could they have all of these emotions without a brain? No I think more research is in order. |
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What about this? Shrimp don't have eyes like ours. Their eyesight cannot compare to a human's. Really? Maybe it's human eyesight that is primative and cannot compare to a shrimp's. You tell me. I think humans are quite silly in their assumptions. Dumb, actually. This was apparently a 'first" for any animal. Yah, that's because humans just cannot imagine that any creature is more complex than they are, especially a lowly mantis shrimp. "Dr Sonja Kleinlogel and Professor Andrew White have shown that mantis shrimp not only have the ability to see colours from the ultraviolet through to the infrared, but have optimal polarisation vision -- a first for any animal and a capability that humanity has only achieved in the last decade using fast computer technology. "The two scientists have shown that shrimp of the species Gonodactylus smithii have eyes that simultaneously measure four linear and two circular polarisations, enabling them to determine both the direction of the oscillation, as well as how polarised the light is." "Each eye measures the six polarisation components that are precisely required for optimal polarisation vision. In fact, the physics we used to understand what was going on is the same physics that we use in quantum computing for optimal storage of information." http://www.sciencedaily.com/releases...0513210456.htm Slraep Last edited by Slraep; 05-22-2008 at 03:06 AM. |
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| Third, STRESS is a Fact of Life. This is the real killer. Asides from bacteria and problems during the seeding operation...stress will kill the oysters and if it doesn't kill them it will help produce a low quality pearl. What causes stress? pollution, extreme water temperatures, salinity changes, human handling, disease, lowered food availability... what doesn't cause any stress: love & relationships, child rearing, inflation, politicians, social status. Once more: they don't have brains. You do mean the politicians about the brain, don´t you? |
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| Sorry. Did not mean to offend re comments or banter. All in good nature I assure you. Just trying to work out if it is really a clam mis-labelled as Pinctada Maxima or what. Can't see how that they can firstly get a PM to sell, or get one to survive in a tank. Apologies. |
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