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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

Hierarchical competitive ability and phenotypic investments in prey: inferior competitors compete and defend

http://hdl.handle.net/2237/26632
http://hdl.handle.net/2237/26632
69e23069-f83d-4da4-8ad8-ac7ace2e72cf
名前 / ファイル ライセンス アクション
JZO-revised.pdf JZO-revised.pdf ファイル公開:2018/02/01 (388.7 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2017-06-09
タイトル
タイトル Hierarchical competitive ability and phenotypic investments in prey: inferior competitors compete and defend
言語 en
著者 Ramamonjisoa, Noelikanto

× Ramamonjisoa, Noelikanto

WEKO 72357

en Ramamonjisoa, Noelikanto

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Natuhara, Yosihiro

× Natuhara, Yosihiro

WEKO 72358

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
権利
言語 en
権利情報 This is the peer reviewed version of the following article: [Ramamonjisoa, N. and Natuhara, Y. (2017), Hierarchical competitive ability and phenotypic investments in prey: inferior competitors compete and defend. J Zool, 301: 157–164. doi:10.1111/jzo.12406], which has been published in final form at [http://doi.org/10.1111/jzo.12406]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
抄録
内容記述 It is commonly assumed that prey must make growth–defense trade-offs when in the presence of predators under resource-limited conditions. Thus, it is predicted that prey will allocate limited resources either to competitive phenotypes to grow or to defensive phenotypes to defend, but not both. Evidence from plants, however, has suggested that under strong selection prey might evolve phenotypes that allow them to simultaneously compete and defend. In a controlled laboratory experiment, we investigated phenotypic investment in asymmetrically competing tadpoles of Rhacophorus schlegelii (RS) and Pelophylax nigromaculatus (PN) in the presence and absence of predatory dragonfly larvae. We predicted that, because of differences in resource acquisition abilities, tadpoles would invest in competitive and defensive phenotypes differently, depending on their relative competitive ability in the presence of predators. RS was the superior competitor and depressed the growth of PN whether predators were present or absent. As expected, the inferior competitor (PN) responded to competition by elongating its gut in predator-free environments. In contrast, the superior competitor (RS) did not respond to competition. In the presence of predators, both tadpoles invested in larger tails, a common defensive trait, while the presence of competitors did not influence tail size. When reared alone in the presence of predators, PN grew faster and tended to have a longer gut. In contrast to theoretical predictions, however, in the presence of both predators and competitors the inferior competitor (PN) still maintained the competitive (long gut) and defensive (large tail) phenotypes despite being depressed in growth. Optimal digestion theory suggests that gut elongation should enhance assimilation efficiency and energy gain. In this view, when a competitive phenotype also serves to benefit prey in predator environments, prey may be able to both compete and defend.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 Wiley
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/10.1111/jzo.12406
ISSN
収録物識別子タイプ PISSN
収録物識別子 0952-8369
書誌情報 en : Journal of Zoology

巻 301, 号 2, p. 157-164, 発行日 2017-02
著者版フラグ
値 author
URI
識別子 http://doi.org/10.1111/jzo.12406
識別子タイプ DOI
URI
識別子 http://hdl.handle.net/2237/26632
識別子タイプ HDL
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