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Employing experimental-ecological methods,the feeding and vitality of adult Anthocidaris crassispina were investigated. The results showed that A. crassispina exhibited an obvious preference on five different seaweeds,with the preference order of Betaphycus gelatinum > Sargassum hemiphyllum > Gelidium amansii> Ulva lactuca > Codium fragile. The daily feed intake of A. crassispina differed among U. lactuca,S. hemiphyllum and B. gelatinum. The feeding was affected by water temperature,seaweed species and body weight. The optimal vitality and feed intake were observed under 23-27℃,which were inhibited under whether too higher or too lower temperature. Under the optimal temperature for feeding,the daily feed intake of adult A. crassispina assumed an exponentially-decreasing trend with increase of body weight.
The results showed that A. crassispina exhibited an obvious preference on five different seaweeds, with the preference order of Betaphycus gelatinum> Sargassum hemiphyllum> Gelidium amansii> Ulva lactuca> Codium fragile. The daily feed intake of A. crassispina differed among U. lactuca, S. hemiphyllum and B. gelatinum. The feeding was affected by water temperature, seaweed species and body weight. The optimal vitality and feed intake were observed under 23- 27 ℃, which were inhibited under whether too high or too lower temperature. Under the optimal temperature for feeding, the daily feed intake of adult A. crassispina assumes an exponentially-decreasing trend with increase of body weight.