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2004 Fiscal Year Final Research Report Summary

Mathematical ecology on persistence of cross predation in fish communities

Research Project

Project/Area Number 15570014
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Ecology/Environment
Research InstitutionYokohama National University (2004)
The University of Tokyo (2003)

Principal Investigator

MATSUDA Hiroyuki  Yokohama National University, Faculty of Environment and Information Sciences, Professor, 環境情報研究院, 教授 (70190478)

Co-Investigator(Kenkyū-buntansha) HORI Michio  Kyoto University, Faculty of Science, Professor, 大学院・理学研究科, 教授 (40112552)
KATSUKAWA Toshio  University of Tokyo, Ocean Research Institute, Assistant Professor, 海洋研究所, 助手 (90302679)
Project Period (FY) 2003 – 2004
KeywordsAntisymmetry / Cross predation / Fish / Mathematical model / Periodic oscillaiton / Ominivory
Research Abstract

Two morphological types ("righty" and "lefty") have been discovered in several fish species and are referred to as a typical example of antisymmetry. It has been suggested, first, that this dimorphism (called laterality) is inheritable ; second, that the frequencies of laterality in each species fluctuate around 0.5 ; and third, that predators mainly exploit prey of the opposite laterality ; that is, lefty and righty predators prey on righties and lefties, respectively. The latter is defined as "cross predation" ; the antonym "parallel predation" means predation within the same laterality. We hypothesized that cross predation drives alternation of the survival and reproductive advantages between two morphological types, leading to frequency-dependent selection that maintains the dimorphism. To investigate this, we constructed mathematical models of population dynamics of one prey/one predator systems and three-trophic-level systems with omnivory. Mathematical analysis and computer simulations explained the behavior of the laterality frequency in nature well, insofar as cross predation dominated over parallel predation. Furthermore, the simulations showed that when only one of the morphological types exists in a species, the other type can invade. This suggests that dimorphism is maintained in all interacting species.

  • Research Products

    (14 results)

All 2005 2004

All Journal Article (12 results) Book (2 results)

  • [Journal Article] The effect of adaptive change in the prey on the dynamics of an exploited predator population2005

    • Author(s)
      Abrams PA, Matsuda H
    • Journal Title

      Can J Fish Aq Sci (in press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] How to test and apply ecological models to fisheries management of sardine and other pelagic fishes.2005

    • Author(s)
      Matsuda H
    • Journal Title

      Progress in Oceanography in review

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] A Population Genetic Model for Lateral Dimorphism Frequency in Fishes.2005

    • Author(s)
      Nakajima M, Matsuda H, Hori M
    • Journal Title

      Pop Ecol (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] The effect of adaptive change in the prey on the dynamics of an exploited predator population.2005

    • Author(s)
      Abrams PA, Matsuda H
    • Journal Title

      Can J Fish Aq Sci 62

      Pages: 758-766

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] How to test and apply ecological models to fisheries management of sardine and other pelagic fishes2004

    • Author(s)
      Matsuda H
    • Journal Title

      Progress in Oceanography (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] A Population Genetic Model for Lateral Dimorphism Frequency in Fishes2004

    • Author(s)
      Nakajima M, Matsuda H, Hori M
    • Journal Title

      Pop Ecol (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Persistence and fluctuation of lateral dimorphism of fishes2004

    • Author(s)
      Nakajima M, Matsuda H, Hori M
    • Journal Title

      Am Nat 163

      Pages: 692-698

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Consequences of behavioral dynamics for the population dynamics of predator-prey systems with switching2004

    • Author(s)
      Abrams PA, Matsuda H
    • Journal Title

      Pop Ecol 46

      Pages: 13-25

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Effects of predator-prey interactions and adaptive change on sustainable yield2004

    • Author(s)
      Matsuda H, Abrams PA
    • Journal Title

      Can J Fish Aq Sci 61

      Pages: 175-184

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Persistence and fluctuation of lateral dimorphism of fishes.2004

    • Author(s)
      Nakajima M, Matsuda H, Hori M
    • Journal Title

      Am Nat 163

      Pages: 692-698

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Consequences of behavioral dynamics for the population dynamics of predator-prey systems with switching.2004

    • Author(s)
      Abrams PA, Matsuda H
    • Journal Title

      Pop Ecol 46

      Pages: 13-25

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Effects of predator-prey interactions and adaptive change on sustainable yield.2004

    • Author(s)
      Matsuda H, Abrams PA
    • Journal Title

      Can J Fish Aq Sci 61

      Pages: 175-184

    • Description
      「研究成果報告書概要(欧文)」より
  • [Book] ゼロからわかる生態学,環境,進化,持続可能性の科学2004

    • Author(s)
      松田裕之
    • Total Pages
      205
    • Publisher
      共立出版
    • Description
      「研究成果報告書概要(和文)」より
  • [Book] Ecology for beginners2004

    • Author(s)
      Matsuda H
    • Total Pages
      205
    • Publisher
      Kyoritshu Shuppan, Tokyo
    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2006-07-11  

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