Tchuenté L A, Imbert-Establet D, Southgate V R, Jourdane J
Laboratoire de Biologie Animale (URA CNRS 698), Université Perpignan, France.
J Helminthol. 1994 Jun;68(2):167-73. doi: 10.1017/s0022149x00013717.
Experimental studies of mating behaviour of Schistosoma intercalatum and Schistosoma mansoni in mixed infections in mice showed that in simultaneous infections, without the possibility of choice of mate, heterologous pairing occurs readily. The paired females reach sexual maturity, are inseminated and lay parthenogenetic eggs. Miracidia originating from the S. mansoni male x S. intercalatum female are non infective to either Biomphalaria glabrata or Bulinus forskalii, whereas those from the reverse cross show a very low infectivity to only B. glabrata. The resulting haploid male cercariae also show a very low infectivity to mice (1.1%) and consequently only a very small number of adult worms develop. It appears from this study, on chromosomal and electrophoretic evidence, that generative (haploid) parthenogenesis occurs in S. mansoni females paired with S. intercalatum males.
对小鼠混合感染曼氏血吸虫和间插血吸虫交配行为的实验研究表明，在同时感染且无配偶选择可能性的情况下，异源配对很容易发生。配对的雌虫达到性成熟，受精并产下孤雌生殖的卵。源自曼氏血吸虫雄虫×间插血吸虫雌虫的毛蚴对光滑双脐螺或福氏小泡螺均无感染性，而反交产生的毛蚴仅对光滑双脐螺有很低的感染性。由此产生的单倍体雄尾蚴对小鼠的感染性也很低（1.1%），因此只有极少数成虫发育。根据这项基于染色体和电泳证据的研究，似乎在与间插血吸虫雄虫配对的曼氏血吸虫雌虫中发生了有性（单倍体）孤雌生殖。
