Singh B N, Chatterjee S
Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi, India.
Genome. 1991 Dec;34(6):849-52. doi: 10.1139/g91-131.
To test whether character displacement for reproductive isolation between Drosophila bipectinata and Drosophila malerkotliana exists, the degree of sexual isolation was measured between their sympatric and allopatric populations. Although the isolation indices vary in different crosses, the average isolation index for sympatric populations is very close to that for allopatric populations. This shows no difference in the degree of sexual isolation between sympatric and allopatric populations of D. bipectinata and D. malerkotliana. Thus there is no evidence for the existence of character displacement for sexual isolation between these two closely related sympatric species.
为了测试双栉果蝇和马勒果蝇之间生殖隔离的性状替代是否存在，对它们的同域和异域种群之间的性隔离程度进行了测量。尽管不同杂交组合的隔离指数有所不同，但同域种群的平均隔离指数与异域种群的非常接近。这表明双栉果蝇和马勒果蝇的同域和异域种群之间的性隔离程度没有差异。因此，没有证据表明这两个密切相关的同域物种之间存在性隔离的性状替代。
