Sympatry, allopatry and sexual isolation between Drosophila mojavensis and D. arizonae
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چکیده
منابع مشابه
Sympatry, allopatry and sexual isolation between Drosophila mojavensis and D. arizonae.
Populations of the North American cactophilic fruitfly Drosophila mojavensis and its sibling species D. arizonae exist both in sympatry and in allopatry. Females of D. arizonae, regardless of their population of origin, are effectively completely isolated behaviorally from D. mojavensis males. On the other hand, females of D. mojavensis from the sympatric populations in Sonora, Mexico exhibit s...
متن کاملSexual Isolation among Populations of Drosophila Mojavensis.
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متن کاملSpecies hybrids in the laboratory but not in nature: a reanalysis of premating isolation between Drosophila arizonae and D. mojavensis.
Understanding speciation relies critically on the identification of mechanisms responsible for maintaining species integrity (i.e., reproductive isolation) especially when closely related species are sympatric in nature. Studies of reproductive isolation in Drosophila often involve laboratory mating experiments that assume that patterns of mate choice in the laboratory are similar to those in t...
متن کاملPost-zygotic isolation in cactophilic Drosophila: larval viability and adult life-history traits of D. mojavensis/D. arizonae hybrids.
Drosophila mojavensis and Drosophila arizonae are cactophilic flies that have been used extensively in speciation studies. Incomplete premating isolation, evidence of reinforcement, and a lack of recent introgression between these species point to a potentially important role for post-zygotic isolating barriers in this system. Other than hybrid male sterility, however, post-zygotic isolation be...
متن کاملAn autosomal factor from Drosophila arizonae restores normal spermatogenesis in Drosophila mojavensis males carrying the D. arizonae Y chromosome.
Males of Drosophila mojavensis whose Y chromosome is replaced by the Y chromosome of the sibling species Drosophila arizonae are sterile. It is shown that genetic material from the fourth chromosome of D. arizonae is necessary and sufficient, in single dose, to restore fertility in these males. In introgression and mapping experiments this material segregates as a single Mendelian factor (sperm...
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ژورنال
عنوان ژورنال: Hereditas
سال: 2006
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.2005.01911.x