SAND DOLLARS AS SUSPENSION FEEDERS: A NEW DESCRIPTION OF FEEDING IN DENDRASTER EXCENTRICUS
SAND DOLLARS AS SUSPENSION FEEDERS: A NEW DESCRIPTION OF FEEDING IN DENDRASTER EXCENTRICUS
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沙元作为悬浮喂料器：DENDRASTER EXCENTRUS 中喂料的新描述
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
Patricia L. Timko
中科院分区：
文献类型：
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作者：
Patricia L. Timko
1. Dendraster excentricus 使用刺和管足来捕获大型食物，例如藻类碎片。此外，还利用大型二齿花梗来捕捉活跃的猎物。 2．食物排斥发生在测试表面或食物凹槽的 Y 形连接处。拒绝反应是明确定义的。3．来自受保护的外海岸地区的树星标本主要以小型甲壳类动物、硅藻、藻类碎片和沙粒为食。在夏季样本中，硅藻是饮食中最丰富的食物；在冬季样本中，甲壳类动物占主导地位。4。与来自两个海湾栖息地的沙钱相比，来自受保护的外海岸沙钱的内脏中含有更多有机物含量更高的食物。5。食物在 5 小时内通过胃，在 2 天内通过整个肠道。来自受保护的外海岸栖息地的树星标本持续进食。6。 Dendraster 个体对 30 µm 至 100 µm 范围内的颗粒尺寸没有选择性。六十页...
1. Dendraster excentricus used the spines and tube feet to capture large food items such as algal fragments. In addition, the large bidentate pedicellariae were used to capture active prey.2. Rejection of food occurred at the test surface or at the Y junction of the food grooves. The rejection response was well defined.3. Specimens of Dendraster from a protected outer coast location ate primarily small crustaceans, diatoms, algal fragments, and sand grains. In a summer sample, diatoms were the most abundant item in the diet; in a winter sample, crustaceans predominated the diet.4. Sand dollars from a protected outer coast sand dollar bed had more food of higher organic content in their guts than did sand dollars from two bay habitats.5. Food passed through the stomach in 5 hr and through the entire gut in 2 days. Specimens of Dendraster from a protected outer coast habitat fed continuously.6. Individuals of Dendraster were nonselective with respect to particle size in the range of 30 µm to 100 µm. Sixty p...