環境工学研究論文集
Online ISSN : 1884-829X
Print ISSN : 1341-5115
ISSN-L : 1341-5115
カワスナガニDeiratonotus japonicusの現地生息横断分布と生息選好性に関する研究
山西 博幸楠田 哲也平田 将彦呉 一権李 昇潤
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ジャーナル フリー

2001 年 38 巻 p. 1-11

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This study paid attention to Deiratonotus japonicus, and field surveys and laboratory experiments were carried out to make clear the relation between the habitat of D. japonicus and aquatic environment in the Kita. Based on these survey andexperimental results, influences to habitation of D.japonicus by the environmental condition in the Kita were discussed. Major conclusions in this study are as follows:(1) The density of D. japonicus decreases in the area over middle waterlevel, (2) D. japonicus inhabits the place where mean diameter of riverbed materials is the middle sized gravel, (3) Preference curve on three environment factors (salinity, riverbed materials and water level) is shown by the results of field surveys, (4) Preference of D. japonicus is examined by laboratory experiments, the results show that riverbed materials over the middle sized gravel seem to play a role as their hiding place and feeding area.

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© 社団法人 土木学会
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