Development of a foraging model for a field population of the South American sun-star Heliaster helianthus

Mutsunori Tokeshi

研究成果: ジャーナルへの寄稿学術誌査読

16 被引用数 (Scopus)

抄録

Heliaster helianthus was studied in an intertidal rocky shore habitat in central Peru. The mussel Semimytilus algosus was a predominant prey with an average proportion of 85.5% and 85.7% by number and biomass, respectively. Larger individuals of H. helianthus fed on clumps of S. algosus containing larger mussels, but the biomass distribution of all S. algosus consumed closely resembled that of the natural prey population, except in the smallest predator size-group (≤10.9cm) where small mussels were more strongly represented in the diet. The study suggests that "energy maximization', the core assumption of classic optimal diet choice models, is not relevant to the choice of prey size and meal size in H. helianthus. -from Author

本文言語英語
ページ(範囲)189-206
ページ数18
ジャーナルJournal of Animal Ecology
58
1
DOI
出版ステータス出版済み - 1月 1 1989
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 生態、進化、行動および分類学
  • 動物科学および動物学

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