scholarly journals Gene flow and gene flux shape evolutionary patterns of variation in Drosophila subobscura

Heredity ◽  
2013 ◽  
Vol 110 (6) ◽  
pp. 520-529 ◽  
Author(s):  
C Pegueroles ◽  
C F Aquadro ◽  
F Mestres ◽  
M Pascual
Keyword(s):  
Gene Flow ◽  
Drosophila Subobscura ◽  
Evolutionary Patterns

scholarly journals INTROGRESSION IN THE DROSOPHILA SUBOBSCURA — D. MADEIRENSIS SISTER SPECIES: EVIDENCE OF GENE FLOW IN NUCLEAR GENES DESPITE MITOCHONDRIAL DIFFERENTIATION

Evolution ◽  
2013 ◽  
Vol 68 (3) ◽  
pp. 705-719 ◽  
Author(s):  
Danielle K. Herrig ◽  
Alec J. Modrick ◽  
Evgeny Brud ◽  
Ana Llopart
Keyword(s):  
Gene Flow ◽  
Drosophila Subobscura ◽  
Nuclear Genes ◽  
Sister Species

scholarly journals Population structure and mitochondrial DNA gene flow in Old World populations of Drosophila subobscura

Heredity ◽  
1992 ◽  
Vol 68 (1) ◽  
pp. 15-24 ◽  
Author(s):  
A Latorre ◽  
C Hernández ◽  
D Martínez ◽  
J A Castro ◽  
M Ramón ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Population Structure ◽  
Gene Flow ◽  
Drosophila Subobscura ◽  
Old World

Great Wall blocks gene flow

Nature ◽  
2003 ◽  
Author(s):  
HelenR. Pilcher
Keyword(s):  
Gene Flow ◽  
Great Wall

Evolutionary Patterns of Retinal-Binding Pockets of Type I Rhodopsins and Their Functions†

2006 ◽  
Vol 82 (6) ◽  
pp. 1426 ◽  
Author(s):  
Larisa Adamian ◽  
Zheng Ouyang ◽  
Yan Yuan Tseng ◽  
Jie Liang
Keyword(s):  
Type I ◽  
Evolutionary Patterns ◽  
Binding Pockets

Comparative Analysis of Genetic and Morphological Variation within the Platanthera hyperborea Complex (Orchidaceae)

2020 ◽  
Vol 45 (4) ◽  
pp. 767-778
Author(s):  
Eranga Wettewa ◽  
Nick Bailey ◽  
Lisa E. Wallace
Keyword(s):  
North America ◽  
Diploid Species ◽  
Morphological Characters ◽  
Evolutionary Patterns ◽  
Founding Population ◽  
Multiple Origins ◽  
Geographic Structure ◽  
Species Complexes ◽  
Nuclear Its ◽  
Cryptic Taxa

Abstract—Species complexes present considerable problems for a working taxonomy due to the presence of intraspecific variation, hybridization, polyploidy, and phenotypic plasticity. Understanding evolutionary patterns using molecular markers can allow for a more thorough assessment of evolutionary lineages than traditional morphological markers. In this study, we evaluated genetic diversity and phylogenetic patterns among taxa of the Platanthera hyperborea (Orchidaceae) complex, which includes diploid (Platanthera aquilonis) and polyploid (Platanthera hyperborea, P. huronensis, and P. convallariifolia) taxa spanning North America, Greenland, Iceland, and Asia. We found that three floral morphological characters overlap among the polyploid taxa, but the diploid species has smaller flowers. DNA sequence variation in a plastid (rpL16 intron) and a nuclear (ITS) marker indicated that at least three diploid species have contributed to the genomes of the polyploid taxa, suggesting all are of allopolyploid origin. Platanthera convallariifolia is most like P. dilatata and P. stricta, whereas P. huronensis and P. hyperborea appear to have originated from crosses of P. dilatata and P. aquilonis. Platanthera huronensis, which is found across North America, has multiple origins and reciprocal maternal parentage from the diploid species. By contrast, P. hyperborea, restricted to Greenland and Iceland, appears to have originated from a small founding population of hybrids in which P. dilatata was the maternal parent. Geographic structure was found among polyploid forms in North America. The area of Manitoba, Canada appears to be a contact zone among geographically diverse forms from eastern and western North America. Given the geographic and genetic variation found, we recommend continued recognition of four green-flowered species within this complex, but caution that there may be additional cryptic taxa within North America.

Differentiation and Interrelations of Two Representatives of Laudakia stellio Complex (Reptilia: Agamidae) in Israel

2011 ◽  
Vol 4 (2) ◽  
pp. 102-114 ◽  
Author(s):  
Evgenyi N. Panov ◽  
Larissa Yu. Zykova
Keyword(s):  
Population Structure ◽  
Gene Flow ◽  
Habitat Preference ◽  
Additional Data ◽  
Near East ◽  
Field Studies ◽  
Subspecies Level ◽  
Limited Gene Flow ◽  
Study Sites ◽  
And Behavior

Field studies were conducted in Central Negev within the breeding range of Laudakia stellio brachydactyla and in NE Israel (Qyriat Shemona) in the range of an unnamed form (tentatively “Near-East Rock Agama”), during March – May 1996. Additional data have been collected in Jerusalem at a distance of ca. 110 km from the first and about 170 km from the second study sites. A total of 63 individuals were caught and examined. The animals were marked and their subsequent movements were followed. Social and signal behavior of both forms were described and compared. Lizards from Negev and Qyriat Shemona differ from each other sharply in external morphology, habitat preference, population structure, and behavior. The differences obviously exceed the subspecies level. At the same time, the lizards from Jerusalem tend to be intermediate morphologically between those from both above-named localities, which permits admitting the existence of a limited gene flow between lizard populations of Negev and northern Israel. The lizards from NE Israel apparently do not belong to the nominate subspecies of L. stellio and should be regarded as one more subspecies within the species.

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