Food consumption and growth of the juvenile sea urchin Strongylocentrotus intermedius.

• AGATSUMA YUKIO

  Applied Aquatic Botany, Graduate School of Agricultural Science, Tohoku University

Abstract

Seasonal changes in food intake and digestion, and growth of the juvenile sea urchin Strongylocentrotus intermedius feeding on the large brown algae Sargassum confusum and Laminaria religiosa were studied during a rearing experiment. The food intake and the proportion of food digested were higher for sargasso than for kelp during July and October but lower during November and March, when only thalli without main or lateral branches of sargasso were consumed, resulting in a lower growth rate. The feed conversion efficiency for sargasso was higher during May and June, and lower during August and October, than that for kelp. However, the digestibility of both algae was inversely related to the feed conversion efficiency. It is considered that changes in digestibility and feed conversion efficiency are caused by interspecific differences and seasonal variations in nutrient levels.

Journal

• Fisheries science

  Fisheries science 66 (3), 467-472, 2000

  The Japanese Society of Fisheries Science

Keywords

• digestion
• food intake
• growth
• Laminaria religiosa
• Sargassum confusum
• sea urchin
• Strongylocentrotus intermedius

Details

• CRID: 1390001204430377344
• NII Article ID: 130003742269
• NII Article ID: 10004858595
• NII Book ID: AA10993718
• DOI: 10.1046/j.1444-2906.2000.00075.x
• COI: 1:CAS:528:DC%2BD3cXlt1Srtr0%3D
• ISSN: 14442906
• ISSN: 09199268
• NDL BIB ID: 5443951
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5443951
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed