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Visual crypsis as a possible function of polymorphic shell coloration in the infaunal clam Ruditapes philippinarum
http://hdl.handle.net/10069/38427
http://hdl.handle.net/10069/3842753842e73-e601-4a97-8f55-64678d69f7da
名前 / ファイル | ライセンス | アクション |
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JSeaRes138_8.pdf (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-09-01 | |||||
タイトル | ||||||
タイトル | Visual crypsis as a possible function of polymorphic shell coloration in the infaunal clam Ruditapes philippinarum | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Background color matching | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Color-polymorphic prey | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Cryptic coloration | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Grass pufferfish | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Manila clam | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Visual predator | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Takeuchi, Seiji
× Takeuchi, Seiji× Suzuki, Kota× Nakagawa, Taishi× Tamaki, Akio |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The infaunal clam Ruditapes philippinarum exhibits highly polymorphic shell coloration, but the function of the coloration remains uncertain. Here, a hypothesis that such shell coloration functions to enhance visual crypsis (i.e., background color matching) in juveniles (<15 mm in shell length) was tested with a combination of a field survey and laboratory experiments. Shell and background colorations were expressed as mean brightness values. Firstly, the association between shell and background brightness was investigated. For this, a field survey for two sympatric subpopulations with distinct substrates was conducted on an intertidal sandflat in western Kyushu, Japan. Secondly, the visual-crypsis hypothesis was tested experimentally using half-valve clam shells filled with paste of raw clam meat as prey and the pufferfish Takifugu niphobles as a visually hunting predator, in a tank with one to two dark-colored substrates and one light-colored substrate. The field survey showed that shell brightness significantly differed between the two sympatric subpopulations of juvenile clams and was positively associated with background brightness. The laboratory experiments indicated that prey items with comparatively light (dark) coloration on dark- (light-) colored substrate were consumed by predators more immediately and at a higher rate than in the color-matched combinations. Consequently, shell?background color matching could help juvenile clams avoid attack from visually hunting predators. The results provide a new insight into effective management planning for this clam species, creating sand habitats with a more matched coloration. | |||||
書誌情報 |
Journal of Sea Research 巻 138, p. 8-18, 発行日 2018-08 |
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出版者 | ||||||
出版者 | Elsevier B.V. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 13851101 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.seares.2018.05.002 | |||||
権利 | ||||||
権利情報 | c 2018 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 license | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Journal of Sea Research, 138, pp.8-18; 2018 |