Feeding behavior of the Antarctic krill, Euphausia superba DANA. II. Effects of food condition on particle selectivity

スポンサーリンク

概要

• 論文の詳細を見る

• Effects of particle size distribution, total particle concentration, and animal size on selective feeding of the Antarctic krill, Euphausia superba DANA, were studied using natural particles as food. Percent particle retention efficiency calculated from the filtering rate for each particle size spectrum increased abruptly for large size particles. This selective feeding for large particles was apparent regardless of abundance of smaller particles. However, the minimum particle size with 50% retention efficiency (half-retention size) increased with increasing total particle concentration. These results suggest that the feeding of the krill shows intensive selection for large particles when food is abundant, but its feeding is rather passive when food is scarce. This flexible feeding seems to be an adaptive behavior to obtain the energy more effectively in the food scarce ocean.

• 国立極地研究所の論文

著者

• Ishii Haruto

  Tokyo Univ. Marine Sci. And Technol. Tokyo Jpn

関連論文

• Effects of low dissolved oxygen on planula settlement, polyp growth and asexual reproduction of Aurelia aurita
• Respiration rates and metabolic demands of Aurelia aurita in Tokyo Bay with special reference to large medusae
• Experimental study of growth and asexual reproduction in Aurelia aurita polyps
• The effects of environmental light condition on strobilation in Aurelia aurita polyps
• Foreword
• Feeding behavior of the Antarctic krill, Euphausia superba DANA I. Reaction to size and concentration of food particles (abstract)
• Feeding behavior of the Antarctic krill, Euphausia superba DANA. II. Effects of food condition on particle selectivity
• Seasonal and Vertical Distribution of Aurelia aurita Polyps on a Pylon in the Innermost Part of Tokyo Bay

スポンサーリンク