Haplotype variation in the spiny-cheek crayfish Orconectes limosus: colonization of Europe and genetic diversity of native stocks

2011 ◽  
Vol 30 (4) ◽  
pp. 871-881 ◽  
Author(s):  
Lenka Filipová ◽  
David A. Lieb ◽  
Frédéric Grandjean ◽  
Adam Petrusek
Keyword(s):  
Genetic Diversity ◽  
Orconectes Limosus ◽  
Haplotype Variation

scholarly journals Haplotype variation in the Physa acuta group (Basommatophora): genetic diversity and distribution in Serbia

2016 ◽  
Vol 17 (1) ◽  
pp. 292 ◽  
Author(s):  
M. J. RAKOVIĆ ◽  
M. B. RAKOVIĆ ◽  
A. M. PETROVIĆ ◽  
N. Z. POPOVIĆ ◽  
J. A. ĐUKNIĆ ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
North America ◽  
Abundant Species ◽  
Separate Species ◽  
High Genetic Diversity ◽  
Freshwater Gastropods ◽  
Multiple Introductions ◽  
Physa Acuta ◽  
Haplotype Variation ◽  
Migrating Birds

The genus Physa (= Physella) includes the most abundant and diverse freshwater gastropods native to North America. Due to their invasive nature many species occur throughout the world. The most abundant species, Physa acuta, has been introduced to Europe, Africa, Asia and Australia by human commerce and migrating birds. This species is widely distributed throughout Serbia. The aim of this study was to explore the genetic diversity of P. acuta from Serbia, and to determine the evolutionary relationships among native Physidae populations from North America, Mexico and Cuba and populations from Europe using sequences of the mitochondrial 16S rDNA gene. The ML (Maximum Likelihood) tree revealed two clades within Physidae, and two clades that correspond to the families Planorbidae and Lymnaeidae. In the Physidae clade there are two separate clades: one includes the species Physa spelunca, and the second includes samples of P. acuta. We determined three different haplotypes within specimens from Serbia. One haplotype is genetically closest to species Physa heterostrofa (synonym of P. acuta) from Philadelphia, while the other two are very close to P. acuta specimens from New Mexico. Together with other samples our findings corroborate the notion that we are dealing with one panmictic population of P. acuta and not with several separate species, despite the high genetic diversity between and among the populations. Our results indicate that in the same population in Serbia, there is high genetic distance between samples. Despite the small number of analyzed samples, our findings point to multiple introductions of P. acuta from different locations in America.

High nuclear genetic differentiation, but low chloroplast diversity in a rare species, Aluta quadrata (Myrtaceae), with a disjunct distribution in the Pilbara, Western Australia

2016 ◽  
Vol 64 (8) ◽  
pp. 687 ◽  
Author(s):  
M. Byrne ◽  
D. J. Coates ◽  
B. M. Macdonald ◽  
M. Hankinson ◽  
S. M. McArthur ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Flow ◽  
Genetic Structure ◽  
Genetic Differentiation ◽  
Microsatellite Loci ◽  
Disjunct Distribution ◽  
Chloroplast Gene ◽  
Seed Sources ◽  
Chloroplast Haplotype ◽  
Haplotype Variation

Geographically separated populations may show high levels of genetic differentiation, depending on the levels of current and historical isolation. In the ancient landscape of the Pilbara region, there are few plant species with restricted distributions, and one such species, Aluta quadrata Rye & Trudgen, is restricted to three separate locations on the southern edge of the Hamersley Range. We investigated genetic diversity and differentiation among geographically isolated locations of A. quadrata, using 10 microsatellite loci to assess contemporary genetic structure, and sequences of seven chloroplast gene regions to infer historical isolation. Nuclear genetic diversity was moderate, with moderate to high genetic differentiation among the three locations, and low differentiation among populations within locations. In contrast, there was no detected variation in the chloroplast genome. The high genetic differentiation is consistent with limited contemporary connectivity among the geographically separated locations, although lack of chloroplast haplotype variation indicates that limited connectivity has occurred more recently and is not due to historical isolation. The level of differentiation suggests use of local seed sources for augmentation or establishment of populations within gene flow distance of existing populations, whereas an experimental translocation established on more distant sites could use mixed seed sources to maximise genetic diversity.

Genetic diversity of Peucedanum japonicum using Internal Transcribed Spacer (ITS) sequence

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
YH Kim ◽  
JA Ryuk ◽  
BS Ko ◽  
JW Lee ◽  
SE Oh ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Internal Transcribed Spacer ◽  
Its Sequence

Genetic diversity revealed by ISSR molecular marker in different species of Ocimum

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
K Shinde ◽  
V Shinde ◽  
J Kurane ◽  
A Harsulkar ◽  
K Mahadik
Keyword(s):  
Genetic Diversity ◽  
Molecular Marker

Genetic diversity and phytochemical characterisation of Sideritis scardica populations from Greece

2019 ◽  
Author(s):  
EV Avramidou ◽  
E Sarrou ◽  
P Papaporfiriou ◽  
E Abraham
Keyword(s):  
Genetic Diversity
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