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Taxonomic study on tree-dwelling aphids, the Tetraneura akinire species group and the Tuberculatus quercicola species group (Insecta; Aphididae) in Japan
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| Title: | Taxonomic study on tree-dwelling aphids, the Tetraneura akinire species group and the Tuberculatus quercicola species group (Insecta; Aphididae) in Japan |
| Other Titles: | 日本産樹上性アブラムシ Tetraneura akinire 種群及び Tuberculatus quercicola 種群の分類学的研究 |
| Authors: | 渡部, 友子 Browse this author |
| Keywords: | COI, description, molecular phylogeny, principal component, Quercus crispula, Quercus dentata, Tuberculatus macrotuberculatus. |
| Issue Date: | 24-Sep-2021 |
| Publisher: | Hokkaido University |
| Abstract: | In this paper, I revised the taxonomy of the Tuberculatus quercicola group, myrmecophilous drepanosiphine aphids that are associated with Quercus dentata and Q. crispula in Japan, based on morphometry and molecular phylogeny. This species group has been recognized as T. quercicola with some junior synonyms. Morphometric analysis of 11 morphological characters divided the group into three clusters; i.e., the Q. crispula-associated population, the central Hokkaido group of the Q. dentata-associated population, and the eastern Hokkaido group of the Q. dentata-associated population. MP and ML analyses of the mitochondrial COI gene indicated that samples of the T. quercicola group are separated, with high bootstrap supports, into two monophyletic groups that are associated with Q. dentata or Q. crispula. However, no genetic differentiation was detected between the central Hokkaido group and the eastern Hokkaido group of the Q. dentata-associated population. These results led me to conclude that populations associated with Q. dentata are genetically and morphologically distinct from those associated with Q. crispula, and thus they are in a full specific status. On the other hand, I treated the two local groups of the Q. dentata-associated population as local races based on morphology. I formally redescribed the Q. crispula-associated and Q. dentata-associated populations under the names T. quercicola and T. macrotuberculatus stat. rev., respectively. |
| Conffering University: | 北海道大学 |
| Degree Report Number: | 甲第14654号 |
| Degree Level: | 博士 |
| Degree Discipline: | 農学 |
| Examination Committee Members: | (主査) 教授 秋元 信一, 教授 大原 昌宏, 准教授 吉澤 和徳 |
| Degree Affiliation: | 農学院（共生基盤学専攻） |
| Type: | theses (doctoral) |
| URI: | http://hdl.handle.net/2115/86971 |
| Appears in Collections: | 課程博士 (Doctorate by way of Advanced Course) > 農学院(Graduate School of Agriculture)
学位論文 (Theses) > 博士 （農学）
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