We evaluated the effects of a buccal cavity attaching Salmincola sp. on white-spotted charr Salvelinus leucomaenis by mark-recapture method to compare body condition, growth, and apparent survival within a headwater stream of the Shiodomari River, Hokkaido, Japan. Prevalence was 13.1–15.5% and the mean intensity was 1.2–1.3 parasites per individual (max = 4). Infected fish were significantly larger than non-infected fish and larger fish had significantly higher apparent survival, but no significant difference was detected in body condition, growth, or apparent survival between infected and non-infected fish. Prevalence and intensity in natural streams may be too low to cause harmful effects on host species.

我们评估了口腔附着Salmincola sp.的影响。在日本北海道 Shiodomari 河源头溪流中，通过标记重新捕获方法对白斑夏鱼Salvelinus leucomaenis进行比较身体状况、生长和表观存活率。患病率为 13.1-15.5%，平均强度为每人 1.2-1.3 个寄生虫（最大 = 4）。受感染的鱼明显大于未受感染的鱼，体型较大的鱼的表观存活率显着提高，但受感染和未受感染的鱼在身体状况、生长或表观存活率方面没有检测到显着差异。自然溪流中的流行率和强度可能太低，不会对寄主物种造成有害影响。