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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >
噴火湾におけるアカガレイおよびイシガレイ仔魚の食性 : 尾虫類Oikopleuraの餌生物としての重要性
| Title: | 噴火湾におけるアカガレイおよびイシガレイ仔魚の食性 : 尾虫類Oikopleuraの餌生物としての重要性 |
| Other Titles: | Feeding habits of two-flatfish-species larvae in Funka Bay, Japan : importance of Oikopleura as prey |
| Authors: | 橋本, 雄太郎1 Browse this author | | 前田, 晃子2 Browse this author | | 大野, 雄介3 Browse this author | | 鹿野, 陽太4 Browse this author | | 髙津, 哲也5 Browse this author →KAKEN DB |
| Authors(alt): | Hashimoto, Yutaro1 | | Maeda, Akiko2 | | Oono, Yusuke3 | | Kano, Yota4 | | Takatsu, Tetsuya5 |
| Keywords: | diet | | house rudiment | | flatfish | | food web | | Oikopleura labradoriensis |
| Issue Date: | 26-Aug-2011 |
| Publisher: | 日本プランクトン学会 |
| Journal Title: | 日本プランクトン学会報 |
| Volume: | 58 |
| Issue: | 2 |
| Start Page: | 165 |
| End Page: | 177 |
| Abstract: | To evaluate the importance of Oikopleura as prey for flatfish larvae, we investigated species composition of appendicularians in the diets of flathead flounder Hippoglossoides dubius and stone flounder Platichthys bicoloratus larvae in Funka Bay in winter and spring (January-May) from 2006 to 2010. 0ikopleura dioica and 0. longicauda were abundant in the bay in January, and 0. labradoriensis increased its population density in February and March. Preflexion, flexion, and small postflexion larvae of flathead flounder fed mainly on invertebrate eggs and copepod nauplii, and large postflexion larvae fed on Oikopleura. Stone flounder larvae fed mainly on Oikopleura through their larval stages, especially in the large larvae. Based on comparison of the inlet filter-like structure in house rudiments of Oikopleura in the flatfish guts, we could identify to species level with a house-rudiment length greater than 550μm. The flatfish larvae fed heavily on 0. labradoriensis. This species can feed on smaller organisms, has a longer life span than other Oikopleura and may have an important role as a trophic shunt from primary producers to the larvae. |
| Rights: | © [2011] 日本プランクトン学会 |
| Type: | article |
| URI: | http://hdl.handle.net/2115/47512 |
| Appears in Collections: | 水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 高津 哲也
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