A Chromosomal Hybrid Zone in the Australian Huntsman Spider, Delena Cancerides (Araneae, Sparassidae) - Evidence for a Hybrid Zone Near Canberra, Australia

1995 ◽  
Vol 43 (2) ◽  
pp. 173 ◽  
Author(s):  
AJ Hancock ◽  
DM Rowell
Keyword(s):  
Hybrid Zone ◽  
Natural Origin ◽  
Chromosomal Races ◽  
Electrophoretic Data ◽  
A Chain

Data are presented that indicate the presence of a hybrid zone between two chromosomal races of the endemic Australian spider Delena cancerides. Electrophoretic data verify the hybridising taxa as members of the Victorian telocentric race and a chain-carrying race. Evidence is presented that indicates the hybrid zone is of natural origin, as opposed to being the result of human introductions.

Morphological, chemical, and biogeographical analyses of a hybrid zone involving Juniperus virginiana and J. horizontalis in Wisconsin

1983 ◽  
Vol 61 (10) ◽  
pp. 2733-2746 ◽  
Author(s):  
M. Palma-Otal ◽  
W. S. Moore ◽  
R. P. Adams ◽  
G. R. Joswiak
Keyword(s):  
Hybrid Zone ◽  
Natural Hybridization ◽  
Statistical Techniques ◽  
Juniperus Virginiana ◽  
Multivariate Statistical Techniques ◽  
Multivariate Statistical ◽  
Driftless Area ◽  
Eastern Boundary ◽  
Electrophoretic Data ◽  
The One

Natural hybridization between Juniperus virginiana (L.) and J. horizontalis (Moench.) has been reported in the Driftless Area in Wisconsin. We applied multivariate statistical techniques to morphological and terpene data both to document the phenomenon of hybridization and to determine more accurately the distribution of hybrids and parentals in the Driftless Area. Analysis of morphological, terpene, and electrophoretic data is consistent with the hypothesis that hybridization is occurring beyond the F1 generation. The biogeography of hybridization resembles an archipelago of hybrid populations arrayed along the Driftless boundary. The situation is unusual in that while most hybrid populations are in contact with extensive J. virginiana populations, none appear to be in contact with J. horizontalis. The one-sided structure of the hybrid zone suggests that hybrids are favored by selection along the eastern boundary of the Driftless Area.

scholarly journals REDUCED GENE FLOW AT PERICENTROMERIC LOCI IN A HYBRID ZONE INVOLVING CHROMOSOMAL RACES OF THE HOUSE MOUSEMUS MUSCULUS DOMESTICUS

Evolution ◽  
2010 ◽  
Author(s):  
Paolo Franchini ◽  
Paolo Colangelo ◽  
Emanuela Solano ◽  
Ernesto Capanna ◽  
Erik Verheyen ◽  
...  
Keyword(s):  
Gene Flow ◽  
Hybrid Zone ◽  
Chromosomal Races

A Model of a Hybrid Zone between Two Chromosomal Races of the Common Shrew (Sorex araneus)

Evolution ◽  
1992 ◽  
Vol 46 (4) ◽  
pp. 1129 ◽  
Author(s):  
Todd Hatfield ◽  
Nick Barton ◽  
Jeremy B. Searle
Keyword(s):  
Hybrid Zone ◽  
Common Shrew ◽  
Sorex Araneus ◽  
Chromosomal Races ◽  
The Common ◽  
Common Shrew Sorex Araneus

scholarly journals Genic Population Structure and Gene Flow in the Northern Flicker (Colaptes auratus) Hybrid Zone

The Auk ◽  
1987 ◽  
Vol 104 (4) ◽  
pp. 654-664 ◽  
Author(s):  
Thaddeus A. Grudzien ◽  
William S. Moore ◽  
J. Richard Cook ◽  
Danilo Tagle
Keyword(s):  
Gene Flow ◽  
Great Plains ◽  
Hybrid Zone ◽  
Gene Diversity ◽  
Morphometric Traits ◽  
Northern Flicker ◽  
Electrophoretic Data ◽  
High Gene ◽  
Colaptes Auratus ◽  
Western Great Plains

Abstract The Yellow-shafted Flicker (Colaptes auratus auratus) and Red-shafted Flicker (C. a. cafer) form a stable, narrow hybrid zone on the western Great Plains of North America. Allozyme data were obtained from 31 structural gene loci for 33 samples representing 246 Northern Flickers from throughout the Great Plains. Flickers were approximately equivalent to other birds in terms of proportion of polymorphic loci (P̄ = 0.207) and average heterozygosity (H̄ = 0.056). There was no concordant variation between plumage characters and allelic frequencies. Gene-diversity analysis indicated that 92.5% of the genic variation occurred as within-deme heterozygosity(GD= 0.925),a pproximately 7% occurred among individual demes( GST= 0.07), and only 0.9% occurred among major river drainages (GST = 0.009). Even less diversity was found amongp arentala nd hybrid groups( GST= 0.002).T here is substantiaal llozymics tructuring of the Northern Flicker speciesp opulation, but the structuringis not associated with the hybrid zone, and there is, at most, very weak structuring into riparian zones of habitat. The electrophoretic data support the inference that gene flow among Northern Flicker populationsis high (Nm = 1.9-4.4/generation).I f the high gene-flowe stimatesa recorrect, then geographicasl electiong radientsw ould be the most likely mechanismm aintaining the narrow hybrid zone of plumage and morphometric traits.

Sign in / Sign up

Export Citation Format

Share Document