ケフサイソガニの食性と食物選択

概要

論文の詳細を見る
A laboratory investigation was made of the selection and consumption of natrrally occurring food items by adults of the grapsid crab Hemigrapsus penicillatus. Three categories of food items were investigated : the algae Enteromorpha prolifera, small conspecific individuals, and sessile matter composed mainly of detritus and diatoms. Adults fed on the internal organs of small conspecifics after removing the carapace. Sessile matter formed the major item, followed by E.proltfera and internal organs of small conspecifics, respectively. However, crabs starved for one day showed a strong food selection for small conspecifics with carapace removed over E. prolifera or small conspecifics without legs, with sessile matter being the least preferred food category. Following starvation, the frequency of contact with food items prior to eating increased for the less preferred categories.
日本生態学会の論文
1989-12-31