Potential Seawater Dispersal of Cypselas of Sphagneticola trilobata (L.) Pruski (Asteraceae), an Aggressive Invasive Alien Plant

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概要

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• Sphagneticola trilobata (L.) Pruski (Asteraceae), considered to be among the world's worst invasive alien species, is indigenous to tropical America, but is now widely distributed in tropical and subtropical regions worldwide. In contrast to its vigorous vegetative reproduction, S. trilobata is thought to produce few fertile fruits. In this study, we investigated cypsela production in S. trilobata plants naturalized in the subtropical Ryukyu Archipelago, Japan, and assessed the viability of cypselas after exposure to seawater. Plants of S. trilobata produce an average of 7.8 cypselas per capitulum with a germination rate of more than 80%. Cypselas of S. trilobata showed high buoyancy in seawater and retained viability after exposure to seawater for 90 days. For preventive management of this species, potential seawater dispersal of cypselas, in addition to vegetative reproduction, should be considered.

• 2013-02-21

著者

• Denda Tetsuo

  Faculty Of Science University Of The Ryukyus

• Yokota Masatsugu

  Faculty Of Science University Of The Ryukyus

• NOHARA HARUNA

  Faculty of Science, University of the Ryukyus

• YOKOTA MASATSUGU

  Faculty of Science, University of the Ryukyus

• SHIMABUKURO TAICHI

  Faculty of Science, University of the Ryukyus

関連論文

• Chromosome Numbers of Japanese Asclepiadaceae
• Feeding behavior of the Orii's flying-fox, Pteropus dasymallus inopinatus, on Mucuna macrocarpa and related explosive opening of petals, on Okinawajima Island in the Ryukyu Archipelago, Japan
• Potential Seawater Dispersal of Cypselas of Sphagneticola trilobata (L.) Pruski (Asteraceae), an Aggressive Invasive Alien Plant

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