Predation mechanism of Japanese rock crab Charybdis japonica on Manila clam Ruditapes philippinarum with possible countermeasures

Kohji Takahashi, Hideki Sawada, Reiji Masuda

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Japanese rock crab Charybdis japonica is a major predator forManila clam Ruditapes philippinarum and so the development of countermeasures against this predation would help restore the decreased clam resource. Choice experiments revealed that C. japonica approaches clams by using olfactory cues, and thus can nd clams that have burrowed into sand. Laboratory conditions that either disturbed sensory cues or provided cover failed to show any improvement in the survival of clams. However, eld trials in Maizuru Bay demonstrated that sparging small stones is ecient for improving the survival of clams.

Original languageEnglish
Pages (from-to)706-711
Number of pages6
JournalNippon Suisan Gakkaishi (Japanese Edition)
Volume82
Issue number5
DOIs
Publication statusPublished - 2016
Externally publishedYes

ASJC Scopus subject areas

  • Aquatic Science

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