Food of the sea urchins Strongylocentrotus nudus and Hemicentrotus pulcherrimus associated with vertical distributions in fucoid beds and crustose coralline flats in northern Honshu, Japan

Hikaru Endo, Nobuyasu Nakabayashi, Yukio Agatsuma, Kazuya Taniguchi

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The vertical distribution and food of Strongylocentrotus nudus and Hemicentrotus pulcherrimus in fucoid beds at depths of 0.3 to 2.4 m and coralline flats at depths of 2.4 to 4.7 m were studied monthly from May 2001 to May 2002 off the Oga Peninsula, Akita prefecture, northern Japan. No seasonal migration of S. nudus from coralline flats to the fucoid beds occurred, as sufficient food was available in the form of sessile animals. Crustose corallines were generally predominant in the gut contents of sea urchins in fucoid beds, where their density was extremely low. Hemicentrotus pulcherrimus inhabit both fucoid beds and coralline flats. The main foods reguired for this sea urchin's gonad production are the dominant algae and sessile animals found in each algal community. The low amounts of fucoids in the gut contents of each species suggest low consumption, possibly because of difficulty in grazing fully grown and erect thalli and feeding deterrents.

Original languageEnglish
Pages (from-to)125-135
Number of pages11
JournalMarine Ecology Progress Series
Volume352
DOIs
Publication statusPublished - 2007 Dec 20

Keywords

  • Fucoid beds
  • Gonad development
  • Gut content
  • Hemicentrotus pulcherrimus
  • Sea urchin
  • Strongylocentrotus nudus

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology

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