A Note on Light and Electron Microscopy Studies of White Pine Exposed to Marine Borer Damage
Keywords:
<i>Pinus</i> sp, SEM, marine borers, wood structure, biodegradationAbstract
A sample of white pine exposed to marine borer attack during an 11-month period in 11 meters depth, off Hokkaido, Japan, was used for anatomical studies. The sample received had been damaged by Limnoria, Bankia setacea, and Teredo navalis. In addition to damage due to the above, degraduation of parenchyma cells indicates possible bacterial action. With the exception of loss of parenchyma, anatomical integrity of the sample had been maintained; there was no evidence of fungal attack. Analyses of wood extractives, holocellulose content, lignin content, and selected inorganics were also undertaken. Both lignin and holocellulose content were below normal, indicating that the lower molecular weight fractions of these components were increased during the exposure period. Interactions of sea water, borer damage, and possible presence of microorganisms (bacteria) on wood structure are discussed along with the use of microscopy as a supporting tool in studies of marine borer damage to wood.References
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