scholarly journals Invasion History of Sirex noctilio Based on COI Sequence: The First Six Years in China

Insects ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 111 ◽  
Author(s):  
Xueting Sun ◽  
Jing Tao ◽  
Alain Roques ◽  
Youqing Luo
Keyword(s):  
Genetic Structure ◽  
Economic Loss ◽  
Environmental Damage ◽  
Invasion History ◽  
Sirex Noctilio ◽  
Chinese Populations ◽  
Genetic Diversity And Structure ◽  
The World ◽  
Gene Coi ◽  
History Of

Sirex noctilio F. (Hymenoptera: Siricidae: Siricinae), a new invasive species in China, is a significant international forestry pest which, transported via logs and related wood packing materials, has led to environmental damage and substantial economic loss in many countries around the world. It was first detected in China in 2013, and since then infestations have been found in 18 additional sites. Using a 322 bp fragment of the mitochondrial barcode gene COI, we studied the genetic diversity and structure of S. noctilio populations in both native and invaded ranges, with a specific focus in China. Twelve haplotypes were found across the native and invaded distribution of the pest, of which three were dominant; among these there were only one or two mutational steps between each pair of haplotypes. No obvious genetic structure was found other than in Chinese populations. China has a unique and dominant haplotype not found elsewhere, and compared with the rest of the world, the genetic structure of Chinese populations suggested a multiple invasion scenario.

scholarly journals Invasion history of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) in Ecuador

2020 ◽  
Author(s):  
Diego F. Cisneros-Heredia ◽  
Emilia Peñaherrera-Romero
Keyword(s):  
Biological Control ◽  
Harmonia Axyridis ◽  
Economic Impacts ◽  
Invasion History ◽  
Museum Specimens ◽  
Agricultural Pest ◽  
Harlequin Ladybird ◽  
The World ◽  
History Of ◽  
Harmonia Axyridis Pallas

AbstractHarmonia axyridis is a ladybird extensively used around the world for biological control of agricultural pest. However, it has become invasive in several countries, producing negative ecological and socio-economic impacts. Herein, we review the invasion history of the Harlequin Ladybird Harmonia axyridis (Pallas, 1773) in Ecuador. Although first reported in Ecuador in 2012, museum specimens date back to 2004 and it is currently established across the country, especially along the Andean region. Due to its invasive nature, further studies are urgently needed to evaluate possible impacts of H. axyridis on the Ecuadorian biodiversity and agroindustry.

Regional patterns of genetic structure among Australian populations of the mud crab, Scylla serrata (Crustacea : Decapoda): evidence from mitochondrial DNA

2002 ◽  
Vol 53 (5) ◽  
pp. 849 ◽  
Author(s):  
David Gopurenko ◽  
Jane M. Hughes
Keyword(s):  
Genetic Structure ◽  
Marine Species ◽  
Scylla Serrata ◽  
Genetic Connectivity ◽  
Regional Patterns ◽  
Mitochondrial Haplotypes ◽  
Shared History ◽  
Gene Coi ◽  
History Of ◽  
Maternal Gene

The population genetic structure of the estuarine crab, Scylla serrata (Forskål, 1775), was examined among shelf-connected locations and across a historical bio-geographic barrier. Over 300 individuals were sampled from multiple locations within coastal regions (western, northern and eastern) of Australia and analysed for mutational differences at a mitochondrial coding gene (COI). Analysis of molecular variance indicated mitochondrial haplotypes to be structured regionally (P < 0.001), which contrasted with evidence of genetic panmixia within regions. Regional genetic structure broadly correlated with hydrological circulation, supporting the contention that release of propagules away from the estuary may allow genetic connectivity among widespread shelf-connected S. serrata populations. That similar patterns of maternal gene flow are absent among trans-oceanic populations may indicate that the spatial scale of effective dispersal for this species is generally limited to areas of coastal shelf. Two distinct clades of haplotypes were geographically separated either side of the Torres Strait, a narrow sea channel connecting the northern and eastern regions of coastal Australia. This pattern of historical genetic separation is concordant with a number of other marine species across northern Australia and may indicate a shared history of vicariance induced by eustasy. Alternatively, we suggest that sundering of S. serrata populations resulting in cladogenesis may have its origins outside of the northern Australian region.

scholarly journals Genetic homogeneity and historical expansions of the slipper lobster, Scyllarides brasiliensis, in the south-west Atlantic

2014 ◽  
Vol 65 (1) ◽  
pp. 59 ◽  
Author(s):  
Ghennie T. Rodríguez-Rey ◽  
Antonio M. Solé-Cava ◽  
Cristiano Lazoski
Keyword(s):  
Genetic Structure ◽  
Atlantic Coast ◽  
Management Strategies ◽  
Genetic Homogeneity ◽  
Middle Pleistocene ◽  
High Dispersal ◽  
Gene Coi ◽  
Significant Genetic Structure ◽  
History Of ◽  
Commercially Important

Management strategies for fisheries species require understanding their connectivity and population dynamics. The Brazilian slipper lobster, Scyllarides brasiliensis, is one of the most commercially important slipper lobster species in South America. We investigated, for the first time, the population genetic structure and evolutionary history of this species. Analyses of sequences of the cytochrome oxidase I gene (COI) and the control region (CR) did not reveal any significant genetic structure of S. brasiliensis (N = 202) along 2700 km of the Atlantic coast (COI: ΦST = 0.0004, ΦCT = 0–0.005, P > 0.05; CR: ΦST = 0.004, ΦCT = 0–0.029, P > 0.05). The genetic homogeneity found suggests high levels of gene flow along the area that are possibly related to the high dispersal potential of the planktonic larvae of the species. Furthermore, the data indicate that demographic and geographical expansions of this slipper lobster population have occurred during the late and middle Pleistocene, which could be related to the fluctuating environmental conditions of that period.

scholarly journals Genetic structure, behaviour and invasion history of the Argentine ant supercolony in Australia

2010 ◽  
Vol 4 (3) ◽  
pp. 471-484 ◽  
Author(s):  
Elissa L. Suhr ◽  
Dennis J. O’Dowd ◽  
Stephen W. McKechnie ◽  
Duncan A. Mackay
Keyword(s):  
Genetic Structure ◽  
Argentine Ant ◽  
Invasion History ◽  
History Of

scholarly journals Genetic Risks and Demographic History of Indigenous Goats of Mongolia Revealed by SNP Genotyping

2021 ◽  
Author(s):  
Alexey Piskunov ◽  
Vera Mukhina ◽  
Gulnara Svishcheva ◽  
Valery Voronkova ◽  
Yurii Stolpovsky
Keyword(s):  
Demographic History ◽  
Geographical Isolation ◽  
Mountain Areas ◽  
Chinese Populations ◽  
Snp Data ◽  
Euro Pean ◽  
The World ◽  
Genetic Risks ◽  
History Of ◽  
Arid Steppe

Recent climatic disasters (dzudzs) and uncontrolled massive breeding endangered valuable ge-netic resources of Mongolian goats labored by five thousand years of evolution in extremes of Al-tai mountains and Gobi deserts. Meanwhile, Mongolian goats has never been characterized by genomic data. We used Illumina Goat SNP50 to investigate phylogenic relationships and genetic risks in 5 local Mongolian populations: Erchim (N=37) from geographically remote Darkhat Valley in the northern mountains, Ulgii Red (N=35) and Dorgon (N=28) from the western mountain region, Buural (N=34) from the western steppe and mountain areas and Gobi Gurvan Saikhan (N=33) from semi-arid steppe area in the South Gobi region. ROH analyses, estimated populations sizes and Fst values showed South Gobi and Darkhat Valley goats to be of a high risk of inbreed-ing that however appear to be of distinct origin (artificial selection vs geographical isolation). In-dices of genetic differentiations between Mongolian goats were relatively low compared to Euro-pean breeds. Meanwhile, we suggest direct comparison is not fully appropriate given that Mongo-lian breeds were not subjected to intense selection. Darkhat Valley goats were clearly differentiat-ed from other Mongolian breeds according to various types of analyses. Phylogenetic relationships within XXX breeds of the rest of the world plotted Mongolian goats between some Russian (Altai, Orenburg) and Chinese populations (Nanjiang and Qinggeli). Thus, present study (i) highlights demographic history Mongolian goats and (ii)provides unified SNP-data called for support deci-sions in conservational genetics. Finally, our work (iii) raises a question of how exactly these data should be compared to make objective choices.

scholarly journals Invasion history of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) in Ecuador

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e10461
Author(s):  
Diego F. Cisneros-Heredia ◽  
Emilia Peñaherrera-Romero
Keyword(s):  
Biological Control ◽  
Harmonia Axyridis ◽  
Economic Impacts ◽  
Invasion History ◽  
Museum Specimens ◽  
Agricultural Pests ◽  
Harlequin Ladybird ◽  
The World ◽  
History Of ◽  
Harmonia Axyridis Pallas

Harmonia axyridis is a ladybird extensively used around the world for biological control of agricultural pests. However, it has become invasive in several countries, producing negative ecological and socio-economic impacts. Herein, we review the invasion history of the Harlequin Ladybird Harmonia axyridis (Pallas, 1773) in Ecuador. Although first reported in Ecuador in 2012, museum specimens date back to 2004 and it is currently established across the country, especially along the Andean region. Due to its invasive nature, further studies are urgently needed to evaluate possible impacts of H. axyridis on the Ecuadorian biodiversity and agroindustry.

scholarly journals The Genetic Structure and East-West Population Admixture in Northwest China Inferred From Genome-Wide Array Genotyping

2021 ◽  
Vol 12 ◽  
Author(s):  
Bin Ma ◽  
Jinwen Chen ◽  
Xiaomin Yang ◽  
Jingya Bai ◽  
Siwei Ouyang ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Northwest China ◽  
Population History ◽  
Genetic Admixture ◽  
Human Populations ◽  
Supporting Evidence ◽  
Chinese Populations ◽  
Genome Wide ◽  
History Of ◽  
East And West

Northwest China is a contacting region for East and West Eurasia and an important center for investigating the migration and admixture history of human populations. However, the comprehensive genetic structure and admixture history of the Altaic speaking populations and Hui group in Northwest China were still not fully characterized due to insufficient sampling and the lack of genome-wide data. Thus, We genotyped genome-wide SNPs for 140 individuals from five Chinese Mongolic, Turkic speaking groups including Dongxiang, Bonan, Yugur, and Salar, as well as the Hui group. Analysis based on allele-sharing and haplotype-sharing were used to elucidate the population history of Northwest Chinese populations, including PCA, ADMIXTURE, pairwise Fst genetic distance, f-statistics, qpWave/qpAdm and ALDER, fineSTRUCTURE and GLOBETROTTER. We observed Dongxiang, Bonan, Yugur, Salar, and Hui people were admixed populations deriving ancestry from both East and West Eurasians, with the proportions of West Eurasian related contributions ranging from 9 to 15%. The genetic admixture was probably driven by male-biased migration- showing a higher frequency of West Eurasian related Y chromosomal lineages than that of mtDNA detected in Northwest China. ALDER-based admixture and haplotype-based GLOBETROTTER showed this observed West Eurasian admixture signal was introduced into East Eurasia approximately 700 ∼1,000 years ago. Generally, our findings provided supporting evidence that the flourish transcontinental communication between East and West Eurasia played a vital role in the genetic formation of northwest Chinese populations.

A History of the World Semiconductor Industry

IEE Review ◽  
1991 ◽  
Vol 37 (10) ◽  
pp. 355
Author(s):  
D.A. Gorham
Keyword(s):  
Semiconductor Industry ◽  
The World ◽  
History Of
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