Population genetic structure and delineation of conservation units in European larch (Larix decidua Mill.) across its native range

Flora ◽  
2018 ◽  
Vol 246-247 ◽  
pp. 26-32 ◽  
Author(s):  
Jiří Dostálek ◽  
Tomáš Frantík ◽  
Markéta Pospíšková ◽  
Miroslava Křížová
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Larix Decidua ◽  
Native Range ◽  
European Larch ◽  
Conservation Units

Population genetic structure and conservation units ofSinomanglietia glauca(Magnoliaceae)

2014 ◽  
Vol 22 (4) ◽  
pp. 476 ◽  
Author(s):  
Xiong Min ◽  
Tian Shuang ◽  
Zhang Zhirong ◽  
Fan Dengmei ◽  
Zhang Zhiyong
Keyword(s):  
Genetic Structure ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Conservation Units

scholarly journals Genetic Diversity of a Rising Invasive Pest in the Native Range: Population Genetic Structure of Aromia bungii (Coleoptera: Cerambycidae) in South Korea

Diversity ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 582
Author(s):  
Seunghyun Lee ◽  
Deokjea Cha ◽  
Yongwoo Nam ◽  
Jonkook Jung
Keyword(s):  
Genetic Structure ◽  
South Korea ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Genetic Data ◽  
Invasive Pest ◽  
Native Range ◽  
Cytochrome Oxidase Subunit ◽  
Longhorn Beetle ◽  
Coi Sequences

The red-necked longhorn beetle (RLB; Aromia bungii [Faldermann, 1835]) is an emerging invasive pest. From its native range of East Asia, it invaded Europe and Japan in the early 2010s. Despite its increasing importance, the molecular resources of RLB are scarce, and its invasive dynamics are largely unknown. In the present study, we carried out the first analysis of its population genetic structure in South Korea, which is part of its native range, using 1248 bp cytochrome oxidase subunit I (COI) sequences of 199 individuals from 18 localities. We found that in South Korea, RLB has a moderate population genetic structure and can be divided into three geographical subgroups: central, southeastern, and southwestern subgroup. Comparative analyses with two Chinese, one German, and ten Italian RLB sequences yielded non-significant results because of largely missing genetic data from other native areas. Nevertheless, as it provided the first population genetic data for this invasive alien species (IAS) whose range is increasing, our research is a crucial molecular resource for future invasive dynamics research.

scholarly journals Bird migratory flyways influence the phylogeography of the invasive brine shrimp Artemia franciscana in its native American range

2013 ◽  
Author(s):  
Joaquín Muñoz ◽  
Francisco Amat ◽  
Andy J Green ◽  
Jordi Figuerola ◽  
Africa Gómez
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Brine Shrimp ◽  
Population Genetic ◽  
Geographic Distance ◽  
Artemia Franciscana ◽  
Large Set ◽  
Native Range ◽  
Mantel Tests

Since Darwin’s time, waterbirds have been considered an important vector for the dispersal of continental aquatic invertebrates. Bird movements have facilitated the worldwide invasion of the American brine shrimp Artemia franciscana, transporting cysts (diapausing eggs), and favouring rapid range expansions from introduction sites. Here we address the impact of bird migratory flyways on the population genetic structure and phylogeography of A. franciscana in its native range in the Americas. We examined the sequence variation for two mitochondrial gene fragments (COI and 16S for a subset of the data) in a large set of population samples representing the entire native range of A. franciscana. Furthermore, we performed Mantel tests and redundancy analyses (RDA) to test the role of flyways, geography and human introductions on the phylogeography and population genetic structure at a continental scale. A. franciscanamitochondrial DNA was very diverse, with two main clades, largely corresponding to Pacific and Atlantic populations, mirroring American bird flyways. There was a high degree of regional endemism, with populations subdivided into at least 12 divergent, geographically restricted and largely allopatric mitochondrial lineages, and high levels of population structure ( Φ ST of 0.92), indicating low ongoing gene flow. We found evidence of human-mediated introductions in nine out of 39 populations analysed. Once these populations were removed, Mantel tests revealed a strong association between genetic variation and geographic distance (i.e., isolation-by-distance pattern). RDA showed that shared bird flyways explained around 20% of the variance in genetic distance between populations and this was highly significant, once geographic distance was controlled for. The variance explained increased to 30% when the factor human introduction was included in the model. Our findings suggest that bird-mediated transport of brine shrimp propagules does not result in substantial ongoing gene flow; instead, it had a significant historical role on the current species phylogeography, facilitating the colonisation of new aquatic environments as they become available along their main migratory flyways.

Defining conservation units in a rich and fragmented flora: implications for the management of genetic resources and evolutionary processes in south-west Australian plants

2000 ◽  
Vol 48 (3) ◽  
pp. 329 ◽  
Author(s):  
David J. Coates
Keyword(s):  
Genetic Structure ◽  
Species Diversity ◽  
Population Genetic Structure ◽  
Population Genetic ◽  
Conservation Strategies ◽  
The South ◽  
Conservation Units ◽  
Ecological Processes ◽  
South West ◽  
Australian Flora

The south-west Australian flora shows a diverse array of evolutionary patterns and exceptionally high species diversity. A significant component of this flora consists of relictual species which often have naturally fragmented and geographically restricted distributions. Many of these species appear to apportion significant levels of genetic diversity among populations. Diversity at both the population and species level presents a major challenge to the development of appropriate conservation strategies for this flora. To be effective these strategies should not only aim to preserve current levels of species diversity, but also consider intraspecific variation and the evolutionary and ecological processes associated with the generation and maintenance of that variation. The identification and characterisation of conservation units, based on population genetic structure and phylogeographic patterns within species, provide a useful basis upon which more general conservation principals can be developed for the maintenance of these processes. Population genetic structure and phylogeographic studies are used to show how conservation units can be identified in Lambertia orbifolia, Acacia anomala, Stylidium coroniforme, Stylidium nungarinense and Banksia cuneata, and taxa from a range of other genera. Determining conservation units in these taxa defines not only suitable units for their conservation but also the appropriate geographical scale for management. These findings indicate the potential this approach can have in determining strategies and priorities for the conservation of the south-west Australian flora.

scholarly journals Bird migratory flyways influence the phylogeography of the invasive brine shrimp Artemia franciscana in its native American range

2013 ◽  
Author(s):  
Joaquín Muñoz ◽  
Francisco Amat ◽  
Andy J Green ◽  
Jordi Figuerola ◽  
Africa Gómez
Keyword(s):  
Gene Flow ◽  
Genetic Structure ◽  
Population Genetic Structure ◽  
Brine Shrimp ◽  
Population Genetic ◽  
Geographic Distance ◽  
Artemia Franciscana ◽  
Large Set ◽  
Native Range ◽  
Mantel Tests

Since Darwin’s time, waterbirds have been considered an important vector for the dispersal of continental aquatic invertebrates. Bird movements have facilitated the worldwide invasion of the American brine shrimp Artemia franciscana, transporting cysts (diapausing eggs), and favouring rapid range expansions from introduction sites. Here we address the impact of bird migratory flyways on the population genetic structure and phylogeography of A. franciscana in its native range in the Americas. We examined the sequence variation for two mitochondrial gene fragments (COI and 16S for a subset of the data) in a large set of population samples representing the entire native range of A. franciscana. Furthermore, we performed Mantel tests and redundancy analyses (RDA) to test the role of flyways, geography and human introductions on the phylogeography and population genetic structure at a continental scale. A. franciscanamitochondrial DNA was very diverse, with two main clades, largely corresponding to Pacific and Atlantic populations, mirroring American bird flyways. There was a high degree of regional endemism, with populations subdivided into at least 12 divergent, geographically restricted and largely allopatric mitochondrial lineages, and high levels of population structure ( Φ ST of 0.92), indicating low ongoing gene flow. We found evidence of human-mediated introductions in nine out of 39 populations analysed. Once these populations were removed, Mantel tests revealed a strong association between genetic variation and geographic distance (i.e., isolation-by-distance pattern). RDA showed that shared bird flyways explained around 20% of the variance in genetic distance between populations and this was highly significant, once geographic distance was controlled for. The variance explained increased to 30% when the factor human introduction was included in the model. Our findings suggest that bird-mediated transport of brine shrimp propagules does not result in substantial ongoing gene flow; instead, it had a significant historical role on the current species phylogeography, facilitating the colonisation of new aquatic environments as they become available along their main migratory flyways.

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