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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
奥尻島で採集されたアゴハゼの胃内容物に出現したタナイス類
| Title: | 奥尻島で採集されたアゴハゼの胃内容物に出現したタナイス類 |
| Other Titles: | First Report of Zeuxo sp. (Crustacea: Tanaidacea) as Prey for the Forktongue Goby, Chaenogobius annularis Gill, 1859 |
| Authors: | 角井, 敬知1 Browse this author |
| Authors(alt): | Kakui, Keiichi1 |
| Issue Date: | Mar-2015 |
| Publisher: | 利尻町立博物館 |
| Journal Title: | 利尻研究 |
| Journal Title(alt): | Rishiri Studies |
| Volume: | 34 |
| Start Page: | 1 |
| End Page: | 6 |
| Abstract: | A tanaidacean species (Zeuxo sp.) was found as a prey item in the stomach of the forktongue goby (Chaenogobius annularis), along with two gammarids. The tanaidacean prey was significantlty male biased (binomial test, P = 0.0094), comprising 20 males and six females, whereas the sex raatio in animals collected from environmental substrata by washing seaweeds, mussels, and rock surfaces was not significantly biased (binomial test, P = 0.4763; 93 males, 104 femaqles, and 30 unisexed mancae). ANOVA by sex showed that the males in the stomach were significantly larger than male3s from the environment (df = 1, F = 30.11, P < 0.001); there was no significant difference for females (df = 1, F = 1.555, P = 0.215). These results suggest that the goby shows prey-size preference, perhaps related to behavioral differences between male and female Zeuxo sp., as previously suggested for a comfamilial tanaidacean. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82800 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 角井 敬知
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