Phylogeography of Spotted Owl (Strix occidentalis) Populations Based on Mitochondrial DNA Sequences: Gene Flow, Genetic Structure, and a Novel Biogeographic Pattern

Evolution ◽  
1999 ◽  
Vol 53 (3) ◽  
pp. 919 ◽  
Author(s):  
George F. Barrowclough ◽  
R. J. Gutierrez ◽  
Jeffrey G. Groth
Keyword(s):  
Mitochondrial Dna ◽  
Gene Flow ◽  
Genetic Structure ◽  
Dna Sequences ◽  
Spotted Owl ◽  
Strix Occidentalis ◽  
Biogeographic Pattern

scholarly journals Genetic Structure of Mexican Spotted Owl (Strix Occidentalis Lucida) Populations in a Fragmented Landscape

The Auk ◽  
2006 ◽  
Vol 123 (4) ◽  
pp. 1090-1102 ◽  
Author(s):  
George F. Barrowclough ◽  
Jeff G. Groth ◽  
Lisa A. Mertz ◽  
R. J. Gutiérrez
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Isolation By Distance ◽  
Geographic Distance ◽  
Variance Partitioning ◽  
Fragmented Landscape ◽  
Spotted Owl ◽  
Strix Occidentalis ◽  
Strix Occidentalis Lucida ◽  
Central Arizona

Abstract We used mitochondrial DNA control-region sequences to investigate the genetic structure of Mexican Spotted Owl (Strix occidentalis lucida) populations in the southwestern United States. This subspecies is federally listed as threatened, and its preferred habitat is naturally fragmented. We found that intrapopulation genetic diversity was high in all but the southeastern Arizona “sky island” populations, where it was variable. Genetic variance partitioning indicated that ≈17% of the variation was distributed among populations and 7.5% was distributed among physiographic regions. Patterns of genetic correlation with geographic distance indicated that gene flow was substantial among populations within the relatively continuous habitat zone of the Mogollon Rim-Upper Gila Mountains in central Arizona and west-central New Mexico. However, there was significant isolation-by-distance elsewhere, and estimates of genetic divergence increased exponentially with geographic distance among fragmented populations on the scale of a few hundreds of kilometers; this implies that gene flow is restricted among those habitat fragments. Genetic heterogeneity among southeastern Arizona populations suggest that they have regularly received immigrants from the central Arizona populations. The Colorado population either was larger than thought or, more likely, has continuously received immigrants from elsewhere and is not a self-sustaining population. Estructura Genética de las Poblaciones de Strix occidentalis lucida en un Paisaje Fragmentado

Geographic Origin and Genetic Structure of Introduced Sika Deer, Kerama Deer (Cervus nippon keramae) on Ryukyus Inferred from Mitochondrial DNA Sequences

Mammal Study ◽  
2015 ◽  
Vol 40 (3) ◽  
pp. 187-192 ◽  
Author(s):  
Asuka Yamashiro ◽  
Akira Endo ◽  
Hidehiko Kuwataka ◽  
Yuki Matsumoto ◽  
Tadashi Yamashiro
Keyword(s):  
Mitochondrial Dna ◽  
Genetic Structure ◽  
Dna Sequences ◽  
Sika Deer ◽  
Geographic Origin ◽  
Cervus Nippon

Cryptic diversity in the smooth snake (Coronella austriaca)

2019 ◽  
Vol 40 (2) ◽  
pp. 179-192 ◽  
Author(s):  
Daniel Jablonski ◽  
Zoltán T. Nagy ◽  
Aziz Avcı ◽  
Kurtuluş Olgun ◽  
Oleg V. Kukushkin ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Dna Sequences ◽  
Integrative Approach ◽  
Biogeographic Pattern ◽  
Western Palearctic ◽  
The Rich ◽  
Morphological Variants ◽  
Glacial Periods ◽  
Coronella Austriaca ◽  
Evolutionary Lineages

Abstract The smooth snake, Coronella austriaca, is a common snake species widespread in the Western Palearctic region. It does not form conspicuous morphological variants and, although several evolutionary lineages have been distinguished based on the analyses of the mitochondrial DNA sequences, only two subspecies with very limited distribution have been traditionally recognized. Here we present an mtDNA phylogeography of the species using geographically extended sampling while incorporating biogeographically important areas that have not been analyzed before, such as Anatolia, Crimea, and Iran. We find that the smooth snake comprises 14 distinct phylogenetic clades with unclear mutual relationships, characterized by complex genetic structure and relatively deep divergences; some of them presumably of Miocene origin. In general, the biogeographic pattern is similar to other Western Palearctic reptiles and illustrates the importance of the main European peninsulas as well as the Anatolian mountains, Caucasus, and Alborz Mts. in Iran for the evolution of the present-day diversity. Considerable genetic structure present in the smooth snake populations within these large areas indicates the existence of several regional Plio-Pleistocene refugia that served as reservoirs for dispersal and population expansions after the glacial periods. The current taxonomy of C. austriaca does not reflect the rich genetic diversity, deep divergences, and overall evolutionary history revealed in our study and requires a thorough revision. This will only be possible with an even higher-resolution sampling and integrative approach, combining analyses of multiple genetic loci with morphology, and possibly other aspects of the smooth snake biology.

Mitochondrial DNA variation within and among populations of the mosquito Aedes albopictus

Genome ◽  
1991 ◽  
Vol 34 (2) ◽  
pp. 288-292 ◽  
Author(s):  
Srinivas Kambhampati ◽  
Karamjit S. Rai
Keyword(s):  
Mitochondrial Dna ◽  
Genetic Variation ◽  
Hong Kong ◽  
Gene Flow ◽  
Genetic Structure ◽  
Aedes Albopictus ◽  
Range Expansion ◽  
Dna Variation ◽  
Restriction Fragment Polymorphism ◽  
Mtdna Polymorphism

A survey of restriction fragment polymorphism in mitochondrial DNA (mtDNA) of 17 populations of the mosquito Aedes albopictus was undertaken. The mtDNA size was estimated to be about 17.5 kbp. The level of polymorphism was low, with over 99% of the fragments being shared in common among the 17 populations. Three populations, Mauritius, Singapore, and Hong Kong, contained individuals with both the ancestral and novel mtDNA haplotypes. We conclude that the low level of mtDNA polymorphism in A. albopictus is a result of recent range expansion and that the mixture of haplotypes is a likely result of human-aided gene flow among populations.Key words: mitochondrial DNA, genetic variation, genetic structure, Aedes albopictus.

Genetic Structure of the Western and Eastern African Sahel/Savannah Belt and the Role of Nomadic Pastoralists as Inferred from the Variation of D-Loop Mitochondrial DNA Sequences

Human Biology ◽  
2017 ◽  
Vol 89 (4) ◽  
pp. 281 ◽  
Author(s):  
Martina Čížková ◽  
Pavel Munclinger ◽  
Mame Yoro Diallo ◽  
Iva Kulichová ◽  
Mohammed G. Mokhtar ◽  
...  
Keyword(s):  
Mitochondrial Dna ◽  
Genetic Structure ◽  
Dna Sequences ◽  
Nomadic Pastoralists ◽  
D Loop ◽  
African Sahel

Inferring population connectivity across the range of the purple-crowned fairy-wren (Malurus coronatus) from mitochondrial DNA and morphology: implications for conservation management

2012 ◽  
Vol 60 (3) ◽  
pp. 199 ◽  
Author(s):  
Anja Skroblin ◽  
Robert Lanfear ◽  
Andrew Cockburn ◽  
Sarah Legge
Keyword(s):  
Mitochondrial Dna ◽  
Gene Flow ◽  
Dna Sequences ◽  
Genetic Divergence ◽  
Conservation Management ◽  
Habitat Degradation ◽  
Morphological Difference ◽  
Population Connectivity ◽  
Isolated Populations ◽  
The Impact

Knowledge of population structure and patterns of connectivity is required to implement effective conservation measures for the purple-crowned fairy-wren (Malurus coronatus), a threatened endemic of northern Australia. This study aimed to identify barriers to dispersal across the distribution of M. coronatus, investigate the impact that the recent declines may have on population connectivity, and propose conservation actions to maintain natural patterns of gene flow. Analysis of mitochondrial DNA sequences from 87 M. coronatus identified two phylogenetic clusters that corresponded with the phenotypically defined western (M. c. coronatus) and eastern (M. c. macgillivrayi) subspecies. The genetic divergence between these subspecies was consistent with isolation by a natural barrier to gene flow, and supports their separate conservation management. Within the declining M. c. coronatus, the lack of genetic divergence and only slight morphological difference between remnant populations indicates that populations were recently linked by gene flow. It is likely that widespread habitat degradation and the recent extirpation of M. c. coronatus from the Ord River will disrupt connectivity between, and dynamics within, remnant populations. To prevent further declines, conservation of M. coronatus must preserve areas of quality habitat and restore connectivity between isolated populations.

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