Observations on an aggregation of the starfish Asterias rubens L. in Morecambe Bay, Lancashire, England
Observations on an aggregation of the starfish Asterias rubens L. in Morecambe Bay, Lancashire, England
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英国兰开夏郡莫克姆湾海星 Asterias rubens L. 聚集的观察
DOI：
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发表时间：
1981
期刊：
影响因子：
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通讯作者：
T. H. Aldridge
中科院分区：
文献类型：
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作者：
N. Sloan;T. H. Aldridge
摘要1976年夏天，兰开夏郡莫雷坎贝湾的紫贻贝潮下带广泛分布，海星呈带状聚集。海星沿着向潮间移动的带呈斑块状分布，最大密度出现在聚集体的前缘。在密集的斑块中，只有不到50%的海星在积极觅食。海星的大小分布呈单峰型。分析了导致该虫夏季不规则聚集的潜在因素。讨论了与过剩食物如贻贝有关的Rubens。在海星聚集的清除螺Buccinum undatum的观察进行了比较，从一个地区的观察，那里有较少的海星。
Summary In the summer of 1976 a narrow, band-shaped aggregation of the starfish Asterias rubens occurred on widespread subtidal beds of Mytilus edulis in Morecambe Bay, Lancashire. Distribution of starfish along the band, which was moving towards the intertidal, was patchy and greatest densities occurred at the leading edge of the aggregation. In dense patches less than 50% of the starfish were actively feeding. The size distribution of the starfish was unimodal. Potential factors leading to the irregular summer season aggregations of A. rubens associated with superabundant food such as mussels are discussed. Observations on the scavenging whelk Buccinum undatum in the starfish aggregation are compared with observations from an area where there were fewer starfish.