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ID 18150
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title alternative
The frequency distribution of the shell diametere of Semisulcospira libertina (Gould, 1859) living in the Kodasan-river in Higashihiroshima-shi, Hiroshima Prefecture
creator
Torigoe, Kenji
Saiga, Yuriko
subject
カワニナ
生態学
殻径頻度
Semisulcospira libertina
ecology
shell diameter frequency
NDC
Biology
abstract
The frequency of the shell diameter of Semisulcospira libertina (Gould, 1859) which inhabits the Kodasan-river in Higashihiroshima-shi was studied through one year. The prosperous time of the production from the appearance of newborns, the average value of the shell diameter, and the median of the shell diameter is from February to April. The life span of this species in this area is presumed to be about two years. Through a year, the average shell diameter of this species is about 4mm to 8m, and the large individuals of this species were obserbed well in October.
journal title
Bulletin of the Graduate School of Education, Hiroshima University. Part. II, Arts and science education
issue
Issue 50
start page
11
end page
15
date of issued
2002-02-28
publisher
広島大学大学院教育学研究科
国立情報学研究所
issn
1346-5546
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Education
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