Notes on the Burrowing Habit of Shipworms in the Timber with the Sheathing
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概要
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Do shipworms go from one board to another, both of which are closely applied with each other? In the present work the square timbers with the sheathing have been used as the test materials and the results are summarized as follows. In the parts I, III and V where both of the sheathing and the embedded timber are closely applied with each other, many of shipworms go easily to the former. But in the parts II and IV where both are not in contact with each other, at all, none of them penetrates the sheathing to go to the embedded timber. Attention is drawn to the relation between the penetrating and the total burrows. Table I shows that the data are variable at the various parts of different timbers, a ?? hough there is a tendency as shown in Table 2. It seems to be caused by the dissimilarity of the contact which will be expected to come about in such structure of the test materials.
- 社団法人 日本水産学会の論文