Although parasitism by trematodes is the likeliest explanation for most outbreaks of amphibian deformities, it is certainly not the only cause and may often be abetted by additional factors.

• 受到吸虫寄生虽是多数两生类畸形的最可能解释，但绝不是唯一的原因，往往也可能受到其他因子连带影响。