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ID 28591
file
title alternative
A Guide to Identifying the Genera of Cyclopidae (Crustacea: Copepoda: Cyclopoida) from Japan
creator
Torigoe, Kenji
subject
Copepoda
Cyclopoidae
genus
identification
key
カイアシ亜綱
ケンミジンコ目
同定
検索表
NDC
Zoology
abstract
Two methods are introduced for identifying Japanese freshwater copepods of the family Cyclopidae. The following 14 features, which are all visible without or with minimal dissection, prove to be useful for generic-level identification: (1) segment number of antenna 1, (2) relative length of antenna 1, (3) segment number of exopodites of legs 2 and 3, (4) segment number of exopodite of leg 4, (5) width of coupler of leg 4, (6) segment number of leg 5, (7) number of setae on terminal segment of leg 5, (8) relative lengths of terminal segment of leg 5 and its inner seta, (9) precise location of this inner seta on the segment, (10) relative lengths of inner and outer setae on terminal segment of leg 5, (11) condition of spinule row on outer margin of caudal ramus, (12) condition of dorsal spinule row or setal row on caudal ramus, (13) condition of dorsal chitinous ridge on caudal ramus, and (14) relative length of caudal ramus. Based on these characters, two kinds of key to the genera of Cyclopidae in Japan are provided, a dichotomous branching key and a matrix key. The manner of use of these keys for identification is explained, and the utility of cyclopoids in school education is discussed.
journal title
Bulletin of the Graduate School of Education, Hiroshima University. Part. II, Arts and science education
issue
Issue 58
start page
19
end page
26
date of issued
2009-12-25
publisher
広島大学大学院教育学研究科
issn
1346-5554
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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