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Relationships between length and weight of freshwater macroinvertebrates in Japan |
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| Authors: | Hitoshi Miyasaka Motomi Genkai-Kato Yo Miyake Daisuke Kishi Izumi Katano Hideyuki Doi Shin-ya Ohba Naotoshi Kuhara |
| Institution: | (1) Center for Marine Environmental Studies, Ehime University, 2-5 Bunkyo-cho, Matsuyama Ehime, 790-8577, Japan;(2) Center for Ecological Research, Kyoto University, Otsu, Shiga, Japan;(3) Graduate School of Science and Engineering, Ehime University, Matsuyama, Ehime, Japan;(4) Gero Branch, Gifu Prefectural Research Institute for Freshwater Fish and Aquatic Environments, Gero, Gifu, Japan;(5) Aqua Restoration Research Center, Kakamigahara, Gifu, Japan;(6) Faculty of Agriculture, Ehime University, Matsuyama, Ehime, Japan;(7) Graduate School of Natural Science and Technology, Okayama University, Okayama, Japan;(8) Chitose Board of Education, Chitose, Hokkaido, Japan |
| Abstract: | Relationships between weight (W; dry weight) and length (L; head capsule width, total body length or head carapace length) were examined in 31 Japanese freshwater macroinvertebrate taxa, using the form W = aL b . The relationships were expressed as data of the lowest taxonomic level and data of higher taxonomic levels. The length–weight relationships obtained in this study were similar to those obtained in North America and Europe at the lowest taxonomic level, whereas they could be different from those obtained in North America and Europe at the higher taxonomic levels. We suggest that researchers should make their own regressions for a target taxon or use the regression for the same taxon as possible lower taxonomic level in the local area. |
| Keywords: | Head capsule width Body length Weight Freshwater macroinvertebrates Stream |
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