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Shell philippines jewels |
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shell philippines jewels,
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Shell philippines jewelsShell philippines jewels My opinion, probably wrong, has always been that melanism in the case of Cypraeidae is due to a specific disease, possibly carried by a parasite. To test this opinion I recently had three specimens sent to me from the Keppel Islands and took them to Mr. W. H. Ewers, a parasitologist with the School of Public Health and Tropical Medicine at Sydney University. Mr. Ewers dissected the mollusca under the microscope but could find no sign of parasitic infestation, but as he pointed out, it would be necessary to examine up to 100 specimens at regular intervals over a period of say twelve months to reach any definite conclusions on the subject. The mollusca could possibly act as intermediate hosts at certain times of the year, the parasites then passing to crabs, fish or sea birds at other periods, and the disease if present not affecting their pigmentation for some reason as with the mollusca. Shell philippines jewelsShell philippines jewels To me, this was a discovery that the operculum doesn't merely serve to close off the aperture of this particular shell (and I'm wondering if many others might not fall into this category) but also serves as a means of vigorous propulsion to get out of harm's way. Shell philippines jewels shell philippines jewels,philippines shells fashion costume,wholesale mother of pearl,handmade philippines products,handmade hand crafted from paua,philippines shells necklace and high collar jewellry,philippines shells slipper,natural cebu fashion,wholesale wholesale,shell philippines jewels
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Updated June 3, 2004 |
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