scholarly journals Sexual Isolation Between Two Known Intraspecific Populations of Hartigiola (Diptera: Cecidomyiidae) That Induce Leaf Galls on Upper and Lower Surfaces of Fagus crenata (Fagales: Fagaceae), Indicating Possible Diversification Into Sibling Species

2014 ◽  
Vol 107 (4) ◽  
pp. 789-798 ◽  
Author(s):  
Misako Mishima ◽  
Shinsuke Sato ◽  
Kiyoshi Tsuda ◽  
Junichi Yukawa
Keyword(s):  
Sibling Species ◽  
Sexual Isolation ◽  
Fagus Crenata

scholarly journals Genetics of sexual isolation in male hybrids of Drosophila simulans and D. mauritiana

1996 ◽  
Vol 68 (3) ◽  
pp. 211-220 ◽  
Author(s):  
Jerry A. Coyne
Keyword(s):  
Genetic Analysis ◽  
Y Chromosome ◽  
Sibling Species ◽  
Previous Analysis ◽  
Sexual Isolation ◽  
Drosophila Simulans

SummarySexual isolation between the sibling species D. simulans and D. mauritiana is due largely to the rejection of D. simulans males by D. mauritiana females. Genetic analysis shows that genes on the X and third chromosomes contribute to the differences between males causing sexual isolation, while the Y chromosome, second chromosome and cytoplasm have no effect. These chromosome effects differ from those observed in a previous analysis of sexual isolation in hybrid females, implying that different genes cause sexual isolation in the two sexes.

SEXUAL ISOLATION BETWEEN TWO SIBLING SPECIES WITH OVERLAPPING RANGES: DROSOPHILA SANTOMEA AND DROSOPHILA YAKUBA

Evolution ◽  
2002 ◽  
Vol 56 (12) ◽  
pp. 2424 ◽  
Author(s):  
Jerry A. Coyne ◽  
Soo Y. Kim ◽  
Audrey S. Chang ◽  
Daniel Lachaise ◽  
Susannah Elwyn
Keyword(s):  
Sibling Species ◽  
Sexual Isolation ◽  
Drosophila Yakuba

scholarly journals Evidence for Initiation of Post-Zygotic Reproductive Isolation between Drosophila ananassae and D. pallidosa as Indicated by Reduction in the Fertility of Hybrid Males

2020 ◽  
Vol 12 (2) ◽  
pp. 41
Author(s):  
Roshni Singh ◽  
Bashisth Narayan Singh
Keyword(s):  
Gene Flow ◽  
Reproductive Isolation ◽  
Sibling Species ◽  
Hybrid Sterility ◽  
Divergence Time ◽  
Sexual Isolation ◽  
Drosophila Ananassae ◽  
Species Pair ◽  
Hybrid Fertility ◽  
Species Pairs

There are several barriers to preclude the gene flow between diverging populations. On the basis of their temporal nature, these can be broadly categorized into two forms: pre- and post-zygotic. Post-zygotic reproductive isolation can manifest in the form of reductions in hybrid fertility. Keeping this fact in view, in the present study, we studied sterility in hybrids of D. ananassae and D. pallidosa. Surprisingly a distinguishable pattern of infertility was found in the hybrids. This pattern, referred to as Haldane’s rule, is often observed in hybrids of recently diverged populations or species. Reduction in the fertility of hybrids provides the clue of incipient kind of post-zygotic reproductive isolation in these two sibling species. This is the first report of hybrid sterility in this species pair. However, hybrid sterility is not very prominent especially when compared to that of other species pairs with the similar divergence time. Thus, on the basis of our results, we conclude that either sexual isolation between these sibling species is sufficient and does not require the aid of post-zygotic isolation to preclude gene flow or rate of divergence between D. ananassae and D. pallidosa is very slow in comparison to other species pair or even races of some species.

scholarly journals SEXUAL ISOLATION BETWEEN TWO SIBLING SPECIES WITH OVERLAPPING RANGES: DROSOPHILA SANTOMEA AND DROSOPHILA YAKUBA

Evolution ◽  
2002 ◽  
Vol 56 (12) ◽  
pp. 2424-2434 ◽  
Author(s):  
Jerry A. Coyne ◽  
Soo Y. Kim ◽  
Audrey S. Chang ◽  
Daniel Lachaise ◽  
Susannah Elwyn
Keyword(s):  
Sibling Species ◽  
Sexual Isolation ◽  
Drosophila Yakuba
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