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A model of plant‐to‐plant movement of aphids III. Studies of actual movement and apparent movement by simulation technique
Author(s) -
Shiyomi Masae
Publication year - 1973
Publication title -
population ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 59
eISSN - 1438-390X
pISSN - 1438-3896
DOI - 10.1007/bf02510664
Subject(s) - movement (music) , moment (physics) , ideal (ethics) , biology , distribution (mathematics) , mathematics , mathematical analysis , physics , classical mechanics , law , acoustics , political science
Summary The plant‐to‐plant movement of aphids was investigated by the simulation technique in this report. Trials satisfying the following conditions are repeated and the results are compared with Shiyomi 's model (1967). An arbitrary individual moves at any moment. The individual moves straightly forward an arbitrary direction and climbs up the plant that he first encounters with. There is no concentrative birth and death. Some of the results are as follows: For an ideal state of movement, an equation describing the relationship between the frequency of actual movement and the degree of changes in the spatial distribution by movement was obtained. The actual movements, whose frequency we cannot count, changes the spatial distribution of insects, and this change can be evaluated by the changes of values of the parameters contained in Shiyomi 's model. Using the statement (i), we can also estimate the frequency of movements of aphids in the ideal (extreme) state.