漁獲の機構I
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概要
- 論文の詳細を見る
Suppose that there is a school of fish or shell of size N in a closed region A and a gear C is set in it at time t=0,then a region B will be formed around C. At first, individuals near the gear will be caught, individuals rete from the gear will approach to the gear and a part of them will be caught. After sufficient time elapses all individuals in a region A will be caught. Let the numbers of individuals in each state A, B, and C be u, v, and w at time t, then we have simultaneous differential equations (1)-(3) with solutions (5)-(7). An experiment was attempted in Kominato Bay by Babylonia japonica (REEVE) to ascertain the theory. The agreement between the experimental result and theory was good as is shown in Table 1 and Figure 2.
- 日本生態学会の論文
- 1957-05-31