Genealogical Portraits of Speciation in the Drosophila melanogaster Species Complex

1994 ◽  
pp. 208-216
Author(s):  
Jody Hey ◽  
Richard M. Kliman
Keyword(s):  
Drosophila Melanogaster ◽  
Species Complex

scholarly journals Larval Tolerance in the Drosophila Melanogaster Species Complex Toward the Two Toxic Acids of the D. Sechellia Host Plant

Hereditas ◽  
2004 ◽  
Vol 129 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Mohammed Amlou ◽  
Brigitte Moreteau ◽  
Jean R. David
Keyword(s):  
Drosophila Melanogaster ◽  
Host Plant ◽  
Species Complex

Hybrid lethal systems in the Drosophila melanogaster species complex. I. The maternal hybrid rescue (mhr) gene of Drosophila simulans.

Genetics ◽  
1993 ◽  
Vol 133 (2) ◽  
pp. 299-305 ◽  
Author(s):  
K Sawamura ◽  
T Taira ◽  
T K Watanabe
Keyword(s):  
Drosophila Melanogaster ◽  
Complex I ◽  
Species Complex ◽  
Reciprocal Cross ◽  
Drosophila Simulans ◽  
Hybrid Male ◽  
Larval Stages ◽  
Embryonic Lethal ◽  
Y Chromosomes ◽  
Lethal Hybrid

Abstract Hybrid females from Drosophila simulans females x Drosophila melanogaster males die as embryos while hybrid males from the reciprocal cross die as late larvae. The other two classes are sterile adults. Letting C, X, and Y designate egg cytoplasm, X, and Y chromosomes, respectively, and subscripts m and s stand for melanogaster and simulans, CmXmYs males are lethal in the larval stage and are rescued by the previously reported genes, Lhr (Lethal hybrid rescue) in simulans or Hmr (Hybrid male rescue) in melanogaster. We report here another rescue gene located on the second chromosome of simulans, mhr (maternal hybrid rescue) that, when present in the mother, rescues CsXmXs females from embryonic lethality. It has been postulated that the hybrids not carrying the Xs like CmXmYs males are larval lethal and that the hybrids carrying both the Cs and the Xm like CsXmXs females are embryonic lethal. According to these postulates CsXmYs males (obtained by mating attached-X simulans females to melanogaster males) should be doubly lethal, at both embryo and larval stages. When both rescuing genes are present, Hmr in the father and mhr in the mother, males of this genotype are fully viable, as predicted.

scholarly journals Hybrid lethal systems in the Drosophila melanogaster species complex. II. The Zygotic hybrid rescue (Zhr) gene of D. melanogaster.

Genetics ◽  
1993 ◽  
Vol 133 (2) ◽  
pp. 307-313 ◽  
Author(s):  
K Sawamura ◽  
M T Yamamoto ◽  
T K Watanabe
Keyword(s):  
Drosophila Melanogaster ◽  
X Chromosome ◽  
Species Complex ◽  
Reciprocal Cross ◽  
Hybrid Male ◽  
Drosophila Sechellia ◽  
Drosophila Mauritiana ◽  
Genetic Mechanisms ◽  
Evolutionary Pathways ◽  
Larval Lethality

Abstract Hybrid females from Drosophila simulans females x Drosophila melanogaster males die as embryos while hybrid males from the reciprocal cross die as larvae. We have recovered a mutation in melanogaster that rescues the former hybrid females. It was located on the X chromosome at a position close to the centromere, and it was a zygotically acting gene, in contrast with mhr (maternal hybrid rescue) in simulans that rescues the same hybrids maternally. We named it Zhr (Zygotic hybrid rescue). The gene also rescues hybrid females from embryonic lethals in crosses of Drosophila mauritiana females x D. melanogaster males and of Drosophila sechellia females x D. melanogaster males. Independence of the hybrid embryonic lethality and the hybrid larval lethality suggested in a companion study was confirmed by employing two rescue genes, Zhr and Hmr (Hybrid male rescue), in doubly lethal hybrids. A model is proposed to explain the genetic mechanisms of hybrid lethalities as well as the evolutionary pathways.

scholarly journals Different Forces Drive the Evolution of the Acp26Aa and Acp26Ab Accessory Gland Genes in the Drosophila melanogaster Species Complex

Genetics ◽  
1998 ◽  
Vol 150 (3) ◽  
pp. 1079-1089 ◽  
Author(s):  
Montserrat Aguadé
Keyword(s):  
North Carolina ◽  
Drosophila Melanogaster ◽  
Species Complex ◽  
Amino Acid Replacement ◽  
Accessory Gland ◽  
Male Accessory Gland ◽  
Accessory Gland Proteins ◽  
Length Polymorphisms ◽  
African Populations ◽  
Nonsynonymous Variation

Abstract The Acp26Aa and Acp26Ab genes that code for male accessory gland proteins are tandemly arranged in the species of the Drosophila melanogaster complex. An ∼1.6-kb region encompassing both genes has been sequenced in 10, 24, and 18 lines from Spain, Ivory Coast, and Malawi, respectively; the previously studied 10 lines from North Carolina have also been included in the analyses. A total of 110 nucleotide and 4 length polymorphisms were detected. Silent variation for the whole Acp26A region was slightly higher in African than in non-African populations, while for both genes nonsynonymous variation was similar in all populations studied. Based on Fst estimates no major genetic differentiation was detected between East and West Africa, while in general non-African populations were strongly differentiated from both African populations. Comparison of polymorphism and divergence at synonymous and nonsynonymous sites revealed that directional selection acting on amino acid replacement changes has driven the evolution of the Acp26Aa protein in the last 2.5 myr.

scholarly journals Comparative Analysis of Satellite DNA in the Drosophila melanogaster Species Complex

2016 ◽  
Vol 7 (2) ◽  
pp. 693-704 ◽  
Author(s):  
Madhav Jagannathan ◽  
Natalie Warsinger-Pepe ◽  
George J. Watase ◽  
Yukiko M. Yamashita
Keyword(s):  
Drosophila Melanogaster ◽  
Comparative Analysis ◽  
Satellite Dna ◽  
Species Complex

Using Hitchhiking Genes to Study Adaptation and Divergence During Speciation Within the Drosophila melanogaster Species Complex

Evolution ◽  
1994 ◽  
Vol 48 (6) ◽  
pp. 1900 ◽  
Author(s):  
Holly Hilton ◽  
Richard M. Kliman ◽  
Jody Hey
Keyword(s):  
Drosophila Melanogaster ◽  
Species Complex
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