Takenaka-Dacanay J H, Carson H L
Department of Genetics, University of Hawaii, Honolulu 96822.
Behav Genet. 1991 May;21(3):305-16. doi: 10.1007/BF01065822.
Three instances are described in which bisexual laboratory strains spontaneously adopted an exclusively parthenogenetic mode of reproduction, even in the presence of fertile, bisexual males. The few males produced by the parthenogenetic strains lack a Y chromosome and are sterile but, nevertheless, showed no correlated impairment of normal mating behavior. In contrast, females show a strong reluctance to accept copulation. This behavioral correlate of parthenogenesis also has been observed previously in experimentally produced parthenogenetic lines. We suggest that genetic breakdown in female mating behavior may contribute to an evolutionary stimulus that results in a selective increase in the frequency of diploidizing events in unfertilized eggs. This ultimately might lead to the origin of an exclusively parthenogenetic reproductive mode.
本文描述了三个案例，其中双性实验室品系即使在有可育双性雄性存在的情况下，也自发地采用了单性生殖模式。单性生殖品系产生的少数雄性缺乏Y染色体且不育，然而，它们的正常交配行为并未受到相关损害。相比之下，雌性则强烈抗拒交配。这种单性生殖的行为关联此前在实验产生的单性生殖品系中也有观察到。我们认为，雌性交配行为的遗传崩溃可能会促成一种进化刺激，导致未受精卵中二倍体化事件的频率选择性增加。这最终可能导致专性单性生殖模式的起源。
