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Temporal Genetic Dynamics of an Invasive Species, Frankliniella occidentalis (Pergande), in an Early Phase of Establishment.

Yang XM, Lou H, Sun JT, Zhu YM, Xue XF, Hong XY - Sci Rep (2015)

Bottom Line: Many species can successfully colonize new areas despite their propagules having low genetic variation.FST and STRUCTURE analysis also showed that most temporal population comparisons from the same sites were not significantly differentiated.Our results showed that the invasive populations of F. occidentalis in China can maintain temporal stability in genetic composition at an early phase of establishment despite having lower genetic diversity than in their native range.

View Article: PubMed Central - PubMed

Affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.

ABSTRACT
Many species can successfully colonize new areas despite their propagules having low genetic variation. We assessed whether the decreased genetic diversity could result in temporal fluctuations of genetic parameters of the new populations of an invasive species, western flower thrips, Frankliniella occidentalis, using mitochondrial and microsatellite markers. This study was conducted in eight localities from four climate regions in China, where F. occidentalis was introduced in the year 2000 and had lower genetic diversity than its native populations. We also tested the level of genetic differentiation in these introduced populations. The genetic diversity of the samples at different years in the same locality was not significantly different from each other in most localities. FST and STRUCTURE analysis also showed that most temporal population comparisons from the same sites were not significantly differentiated. Our results showed that the invasive populations of F. occidentalis in China can maintain temporal stability in genetic composition at an early phase of establishment despite having lower genetic diversity than in their native range.

No MeSH data available.


Related in: MedlinePlus

Sampling locality and mitochondrial haplotype distribution for each year(The map is made by ArcGIS 10.2 software, http://www.arcgis.com/features/).
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f1: Sampling locality and mitochondrial haplotype distribution for each year(The map is made by ArcGIS 10.2 software, http://www.arcgis.com/features/).

Mentions: In total, 851 F. occidentalis adult females were sampled from May 2009 to August 2012 (Table 1, Fig. 1). The time span represents multiple generations considering the generation number of F. occidentalis was 8–15 in BS, DL, KM and GY, 13-14 in QD, 1–10 in HRB and SY, 2–10 in JQ1721. These samples were collected in eight localities, which were sampled two or more times, belonging to four different climate regions in China and characterized by discrete environmental variables (Table 1). BS, DL, KM and GY are located in the subtropical plateau monsoon climate zone with an annual temperature around 15 °C and annual precipitation around 1000 mm. QD is found in the temperate maritime monsoon climate zone with annual temperatures around 12 °C and annual precipitation around 700 mm. HRB and SY have temperate continental monsoon climates with an annual temperature around 6 °C and annual precipitation around 600 mm. JQ belongs to the temperate continental desert climate zone with annual temperatures around 7 °C and annual precipitation around 85 mm. In summary, the southwestern and northern localities were warmer than the other localities and northwestern localities were drier than the other localities.


Temporal Genetic Dynamics of an Invasive Species, Frankliniella occidentalis (Pergande), in an Early Phase of Establishment.

Yang XM, Lou H, Sun JT, Zhu YM, Xue XF, Hong XY - Sci Rep (2015)

Sampling locality and mitochondrial haplotype distribution for each year(The map is made by ArcGIS 10.2 software, http://www.arcgis.com/features/).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4490395&req=5

f1: Sampling locality and mitochondrial haplotype distribution for each year(The map is made by ArcGIS 10.2 software, http://www.arcgis.com/features/).
Mentions: In total, 851 F. occidentalis adult females were sampled from May 2009 to August 2012 (Table 1, Fig. 1). The time span represents multiple generations considering the generation number of F. occidentalis was 8–15 in BS, DL, KM and GY, 13-14 in QD, 1–10 in HRB and SY, 2–10 in JQ1721. These samples were collected in eight localities, which were sampled two or more times, belonging to four different climate regions in China and characterized by discrete environmental variables (Table 1). BS, DL, KM and GY are located in the subtropical plateau monsoon climate zone with an annual temperature around 15 °C and annual precipitation around 1000 mm. QD is found in the temperate maritime monsoon climate zone with annual temperatures around 12 °C and annual precipitation around 700 mm. HRB and SY have temperate continental monsoon climates with an annual temperature around 6 °C and annual precipitation around 600 mm. JQ belongs to the temperate continental desert climate zone with annual temperatures around 7 °C and annual precipitation around 85 mm. In summary, the southwestern and northern localities were warmer than the other localities and northwestern localities were drier than the other localities.

Bottom Line: Many species can successfully colonize new areas despite their propagules having low genetic variation.FST and STRUCTURE analysis also showed that most temporal population comparisons from the same sites were not significantly differentiated.Our results showed that the invasive populations of F. occidentalis in China can maintain temporal stability in genetic composition at an early phase of establishment despite having lower genetic diversity than in their native range.

View Article: PubMed Central - PubMed

Affiliation: Department of Entomology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China.

ABSTRACT
Many species can successfully colonize new areas despite their propagules having low genetic variation. We assessed whether the decreased genetic diversity could result in temporal fluctuations of genetic parameters of the new populations of an invasive species, western flower thrips, Frankliniella occidentalis, using mitochondrial and microsatellite markers. This study was conducted in eight localities from four climate regions in China, where F. occidentalis was introduced in the year 2000 and had lower genetic diversity than its native populations. We also tested the level of genetic differentiation in these introduced populations. The genetic diversity of the samples at different years in the same locality was not significantly different from each other in most localities. FST and STRUCTURE analysis also showed that most temporal population comparisons from the same sites were not significantly differentiated. Our results showed that the invasive populations of F. occidentalis in China can maintain temporal stability in genetic composition at an early phase of establishment despite having lower genetic diversity than in their native range.

No MeSH data available.


Related in: MedlinePlus