The over-dispersion of the acanthocephalan population in host different body length groups was found, and the degree of the aggregation increases with the increases of mean abundance.

棘头虫种群在宿主不同体长组的分布类型为聚集分布，且聚集强度随棘头虫的种群平均丰度增加而增加。

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The over-dispersion of the acanthocephalan population in host different body length groups was found, and the degree of the aggregation increases with the increases of mean abundance.

棘头虫种群在宿主不同体长组的分布类型为聚集分布，且聚集强度随棘头虫的种群平均丰度增加而增加。

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