Morphological Variation in Japanese Populations of a Freshwater Leech, Helobdella stagnalis (Hirudinea : Rhynchobdellida : Glossiphoniidae)
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- Itoh Tetsuya
- Division of Biological Sciences, Graduate School of Science, Hokkaido University
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Abstract
The variations of internal and external morphology and body shape between and within three populations of Helobdella stagnates (Linnaeus, 1758) in northern Honshu, Japan, were examined. The results suggest that (1) the location of internal organs relative to the segmentation is not informative for Helobdella taxonomy, (2) body shape may be useful as a species-level taxonomic character for properly fixed specimens, and (3) a purportedly cosmopolitan species, H. stagnalis may need to be separated into more than one species with restricted distributional ranges.
Journal
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- Species Diversity
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Species Diversity 6 (3), 169-178, 2001
The Japanese Society of Systematic Zoology
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Keywords
Details 詳細情報について
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- CRID
- 1390001204458252544
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- NII Article ID
- 110002344093
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- NII Book ID
- AA11114903
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- ISSN
- 21897301
- 13421670
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- NDL BIB ID
- 5986685
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed