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  1. D300 大学院環境学研究科
  2. D300a 雑誌掲載論文
  3. 学術雑誌

Animal or Algal Materials: Food Toughness, Food Concentration, and Competitor Density Influence Food Choice in an Omnivorous Tadpole

http://hdl.handle.net/2237/26018
http://hdl.handle.net/2237/26018
317a3ef9-01fd-49ed-b105-fb1ca4690f36
名前 / ファイル ライセンス アクション
RamamonjisoaEtAl.pdf RamamonjisoaEtAl.pdf (277.1 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-04-18
タイトル
タイトル Animal or Algal Materials: Food Toughness, Food Concentration, and Competitor Density Influence Food Choice in an Omnivorous Tadpole
言語 en
著者 Ramamonjisoa, Noelikanto

× Ramamonjisoa, Noelikanto

WEKO 70754

en Ramamonjisoa, Noelikanto

Search repository
Rakotonoely, Harisoa

× Rakotonoely, Harisoa

WEKO 70755

en Rakotonoely, Harisoa

Search repository
Natuhara, Yosihiro

× Natuhara, Yosihiro

WEKO 70756

en Natuhara, Yosihiro

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
キーワード
主題Scheme Other
主題 Density-dependent food choice
キーワード
主題Scheme Other
主題 Omnivore
キーワード
主題Scheme Other
主題 Optimal foraging models
キーワード
主題Scheme Other
主題 Resource toughness
キーワード
主題Scheme Other
主題 Rhacophorus arboreus
キーワード
主題Scheme Other
主題 Tadpole feeding behavior
抄録
内容記述 Little is known about behavioral aspects of tadpole feeding ecology. Resource protein is by far the most studied factor assumed to govern food choice in tadpoles, whereas other factors such as resource toughness and competition have received less attention. Here, we tested the food choice of an omnivorous pond-dwelling tadpole when exposed to animal and algal materials at different toughnesses and concentrations (1× and 2× amount of food per volume), used as a proxy indicator of energy gain per bite. We subsequently tested how tadpole feeding behavior and food choice change with competitor density (when alone, in pairs, or in a group). We found that type, toughness, and concentration of the food influenced choice by the tadpoles; however, a three-way interaction among these variables was absent. The tadpoles did not feed randomly and preferred the algal materials when these were softer than, or as tough as, the animal materials. The tadpoles discriminated among foods of different concentrations and readily fed on the high-concentration food materials. Tadpole feeding behavior was density dependent. In a group, the tadpoles nearly doubled their feeding activities and increased their feeding on animal materials, here the less-preferred foods. Food toughness, energy gain per bite, and the presence of competitors influence tadpole feeding behavior, and could be factors used as proximate cues for determining food quality in tadpole foraging strategies.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Herpetologists League
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1655/HERPETOLOGICA-D-15-00051
ISSN
収録物識別子タイプ PISSN
収録物識別子 0018-0831
書誌情報 en : Herpetologica

巻 72, 号 2, p. 114-119, 発行日 2016-06
著者版フラグ
値 author
URI
識別子 http://dx.doi.org/10.1655/HERPETOLOGICA-D-15-00051
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26018
識別子タイプ HDL
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