The frequency distribution of the acanthocephalan and the nematode was over-dispersed with parameter of negative binomial distribution of 0.2539 and 0.2176 respectively.

 
  • 棘頭蟲(chóng)和線(xiàn)蟲(chóng)的種群在黃鱔種群中均呈聚集分布;其負二項參數k值分別為0.;2539和0
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