4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.
是雌雄同体的,生殖系统适于体内受精。单起源的吸(单殖纲)大多是的外寄生。
4 Turbellarians are monoecious with the reproductive systems adapted for internal fertilization. And the monogenetic flukes (class Monogenea) are mostly ectoparasites of fishes.
是雌雄同体的,生殖系统适于体内受精。单起源的吸(单殖纲)大多是的外寄生。
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