論文

査読有り
2017年2月

Allometric analysis of a morphological anti-predator trait in geographic populations of Japanese crucian carp

SCIENTIFIC REPORTS
  • Sakie Kodama
  • ,
  • Hiroka Fujimori
  • ,
  • Hiroshi Hakoyama

7
41943
開始ページ
1
終了ページ
8
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/srep41943
出版者・発行元
NATURE PUBLISHING GROUP

Costly anti-predator traits tend to be expressed only in high-predation conditions. For the cyprinid fish genus Carassius, deeper body depth is more adaptive to avoid predation by gape-limited piscivorous fish, but it raises swimming costs. It is therefore predicted that the relative body depth will decrease when the prey fish has reached a size larger than the predator gape-size. This prediction was tested by allometric analysis of the relation between body depth and standard length of triploid asexual females of the Japanese crucian carp (Carassius auratus sspp.) sampled from 13 geographic populations. The overall allometric relation was not significantly different from isometry. The estimate of the common major-axis slope was close to 1 (near-isometry). The mean relative body depth differed significantly among populations. A significant positive correlation was found with the mean annual air temperature. The geographic variation suggests that local selection pressures vary. In conclusion, the hypothesis that larger fish will have lower body depth was not supported, perhaps indicating that deep body depth in large fish is adaptive for some reason other than defense against piscivorous fish.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.1038/srep41943
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000393342400001&DestApp=WOS_CPL
URL
http://www.nature.com/articles/srep41943
URL
http://orcid.org/0000-0001-7464-0754

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