两种钩虫在皮肤和肌肉内的形态与侵入宿主前的第3期幼虫相似。
Both species during their skin and muscle stages are similar to the 3rd stage larvae before entering hosts.
集体饲育以幼虫期之死亡率最高，为主要死亡时段，前蛹期次之，蛹期最低。
In general, larva having the lowest survival rate was the main fatal stage during group rearing following by prepupa and pupa.
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