Willis M S
Harold W Manter Laboratory, University of Nebraska State Museum, Lincoln, NE 68588, USA.
Mem Inst Oswaldo Cruz. 2001 Apr;96(3):331-8. doi: 10.1590/s0074-02762001000300008.
Allocreadium lobatum Wallin, 1909 has been reported in cyprinid species of freshwater fish in Canada and in the United States. The population biology of A. lobatum in the host Semotilus atromaculatus Mitchill was studied from May through December 1991, in a USA creek. Overall prevalence (64%) and mean intensity (4.4 +/- 0.4) were greater than previously reported while abundance, reported for the first time, was 2.8 +/- 0.3. Several trends in A. lobatum population biology as a function of S. atromaculatus length were identified. Mean intensity and abundance of A. lobatum increased with host size and significant differences in prevalence and A. lobatum lengths were found to correlate with host lengths.
1909年沃林报道的叶形阿洛吸虫已在加拿大和美国的淡水鲤科鱼类中被发现。1991年5月至12月，在美国的一条小溪中对宿主黑纹钝口鱼体内的叶形阿洛吸虫的种群生物学进行了研究。总体感染率（64%）和平均感染强度（4.4±0.4）高于先前报道，而首次报道的丰度为2.8±0.3。确定了叶形阿洛吸虫种群生物学随黑纹钝口鱼体长变化的几个趋势。叶形阿洛吸虫的平均感染强度和丰度随宿主大小增加，且发现感染率和叶形阿洛吸虫长度的显著差异与宿主长度相关。
