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Rapid Evolution of Assortative Fertilization between Recently Allopatric Species of Drosophila
المؤلفون المشاركون
Ahmed-Braimah, Yasir H.
McAllister, Bryant F.
المصدر
International Journal of Evolutionary Biology
العدد
المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2012-01-18
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
The virilis group of Drosophila represents a relatively unexplored but potentially useful model to investigate the genetics of speciation.
Good resolution of phylogenetic relationships and the ability to obtain fertile hybrid offspring make the group especially promising for analysis of genetic changes underlying reproductive isolation separate from hybrid sterility and inviability.
Phylogenetic analyses reveal a close relationship between the sister species, Drosophila americana and D.
novamexicana, yet excepting their contemporary allopatric distributions, factors that contribute to reproductive isolation between this species pair remain uncharacterized.
A previous report has shown reduced progeny numbers in laboratory crosses between the two species, especially when female D.
novamexicana are crossed with male D.
americana.
We show that the hatch rate of eggs produced from heterospecific matings is reduced relative to conspecific matings.
Failure of eggs to hatch, and consequent reduction in hybrid progeny number, is caused by low fertilization success of heterospecific sperm, thus representing a postmating, prezygotic incompatibility.
Following insemination, storage and motility of heterospecific sperm is visibly compromised in female D.
novamexicana.
Our results provide evidence for a mechanism of reproductive isolation that is seldom reported for Drosophila species, and indicate the rapid evolution of postmating, prezygotic reproductive barriers in allopatry.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Ahmed-Braimah, Yasir H.& McAllister, Bryant F.. 2012. Rapid Evolution of Assortative Fertilization between Recently Allopatric Species of Drosophila. International Journal of Evolutionary Biology،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-460377
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Ahmed-Braimah, Yasir H.& McAllister, Bryant F.. Rapid Evolution of Assortative Fertilization between Recently Allopatric Species of Drosophila. International Journal of Evolutionary Biology No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-460377
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Ahmed-Braimah, Yasir H.& McAllister, Bryant F.. Rapid Evolution of Assortative Fertilization between Recently Allopatric Species of Drosophila. International Journal of Evolutionary Biology. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-460377
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-460377
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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