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題 名 | Direct Growth Measurements of Two Deep-sea Scalpellid Barnacles, Scalpellum stearnsii and Graviscalpellum pedunculatum |
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作 者 | Yusa, Yoichi; Yasuda, Natsumi; Yamamoto, Tomoko; Watanabe, Hiromi Kayama; Higashiji, Takuo; Kaneko, Atsushi; Nishida, Kazuki; Høeg, Jens T.; | 書刊名 | Zoological Studies |
卷 期 | 57 2018[民107] |
頁 次 | 頁(29)1-(29)8 |
分類號 | 387.15 |
關鍵詞 | Cirripedia; Field measurement; Growth rate; Pedunculata; Rearing; |
語 文 | 英文(English) |
英文摘要 | Little is known about the growth rates of invertebrates living in ordinary deep-sea habitats such as continental slopes. Thus, the growth rates of two species of the deep-sea scalpellid barnacles, Scalpellum stearnsii and Graviscalpellum pedunculatum, were studied in two aquaria (at Nara and Okinawa Churaumi, Japan). In addition, growth of an S. stearnsii individual after 1 year of deployment was measured in the field. Overall, adult individuals of both species showed slow growths over 8 months (at Nara) and 2 years (at Okinawa) of rearing (e.g., at Nara: 2.0 ± 3.6 μm d-1 for S. stearnsii and 5.9 ± 2.7 μm d-1 for G. pedunculatum; mean ± SD). In contrast, growth rates of juvenile S. stearnsii at Nara were greater (15 ± 7.7 μm d-1). The in situ growth rate of the adult S. stearnsii (3.4 μm d-1) was greater than the average, but within the range of the rates of similar-sized individuals recorded in aquaria. Compared with other pedunculate barnacles, both species show small growth rates typical for deep-sea animals. |
本系統中英文摘要資訊取自各篇刊載內容。