Genetic diversity and structure of the invasive tree <i>Miconia calvescens</i> in Pacific islands

Roux, Johannes J. Le; Wieczorek, Ania M.; Meyer, Jean Yves

doi:10.1111/j.1472-4642.2008.00504.x

Cited by 48 publications

(57 citation statements)

References 55 publications

(68 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Guatemala, the absence of five haplotypes (H9, H10, H11, H12 and H13) found exclusively in Costa Rica and of one haplotype (H6) shared by all other samples might be explained by the non exhaustive haplotype sampling in Guatemala, considering the high genetic diversity observed in that country. Such loss of genetic diversity in invasive populations compared to native ones has already been observed in other species (Grapputo et al 2005;De Walt and Hamrick 2004;Le Roux et al 2008;Puillandre et al 2008). These results are congruent with the historical data.…”

Section: Discussionsupporting

confidence: 94%

Inferring native range and invasion scenarios with mitochondrial DNA: the case of T. solanivora successive north–south step-wise introductions across Central and South America

Torres-Leguizamon

Dupas

Dardon³

et al. 2011

Biol Invasions

View full text Add to dashboard Cite

Tecia solanivora (Lepidoptera: Gelechiidae) is an invasive species that attacks the tubers of the potato Solanum tuberosum. It is considered a serious pest of potato crops and stocks in all countries where it occurs. In the present study, we sequenced 541 individuals sampled across the T. solanivora distribution range, using the mitochondrial DNA marker Cytochrome b (Cytb) to delimit the area of species origin. We also analyzed the genetic structure of T. solanivora in its putative area of origin and described differences in haplotype diversity between samples from different geographic origins affected by the invasion. We observed a gap in the level of genetic diversity between Guatemalan samples (h between 0.77 and 0.97) and those from Costa-Rica, Venezuela, Colombia, Ecuador and the Canary Islands (h between 0 and 0.56). The number of haplotypes has decreased over the colonization process, ending with the observation of a single haplotype in Colombia, Ecuador and the Canary Islands. Consequently, the invasion of South American countries by T. solanivora is likely to have had a front-like step-wise progression, where the most recently invaded country becomes the source of subsequent invasion.

show abstract

Section: Discussionsupporting

confidence: 94%

Inferring native range and invasion scenarios with mitochondrial DNA: the case of T. solanivora successive north–south step-wise introductions across Central and South America

Torres-Leguizamon

Dupas

Dardon³

et al. 2011

Biol Invasions

View full text Add to dashboard Cite

show abstract

“…It is not clear how such information might help manage invasive species (Simberloff 2003). Alternatively, low genetic diversity might indicate low adaptive potential to overcome control measures (Le Roux et al 2008). However, molecular genetic variation is a poor indicator of additive genetic variance for any particular trait (Lynch and Walsh 1998;Reed and Frankham 2001) and the actual adaptive potential will not be known until selection is applied.…”

Section: Founder Effectsmentioning

confidence: 97%

What can DNA tell us about biological invasions?

et al. 2011

View full text Add to dashboard Cite

It is often hoped that population genetics can answer questions about the demographic and geographic dynamics of recent biological invasions. Conversely, invasions with well-known histories are sometimes billed as opportunities to test methods of population genetic inference. In both cases, underappreciated limitations constrain the usefulness of genetic methods. The most significant is that humancaused invasions have occurred on historical timescales that are orders of magnitude smaller than the timescales of mutation and genetic drift for most multicellular organisms. Analyses based on the neutral theory of molecular evolution cannot resolve such rapid dynamics. Invasion histories cannot be reconstructed in the same way as biogeographic changes occurring over millenia. Analyses assuming equilibrium between mutation, drift, gene flow, and selection will rarely be applicable, and even methods designed for explicitly non-equilibrium questions often require longer timescales than the few generations of most invasions of current concern. We identified only a few population genetic questions that are tractable over such short timescales. These include comparison of alternative hypotheses for the geographic origin of an invasion, testing for bottlenecks, and hybridization between native and invasive species. When proposing population genetic analysis of a biological invasion, we recommend that biologists ask (i) whether the questions to be addressed will materially affect management practice or policy, and (ii) whether the proposed analyses can really be expected to address important population genetic questions. Despite our own enthusiasm for population genetic research, we conclude that genetic analysis of biological invasions is justified only under exceptional circumstances.

show abstract

“…Species with special or unique distributions as a result of physical boundaries (e.g., coastal species; for an example of truncated species range; see Howes and Lougheed, 2008), species introductions or biotic invasions, and disjunctions due to habitat fragmentation (see Le Roux et al, 2008) deserve special treatment. The models in Figure 3 only concern spatial pattern; the temporal fluctuation in populations along the C-M gradient related to disturbances and population age needs additional attention.…”

Section: Central-marginal Phenotypic and Genetic Variationmentioning

confidence: 99%

Central-marginal population dynamics in species invasions

Guo¹

2014

Front. Ecol. Evol.

View full text Add to dashboard Cite

The species' range limits and associated central-marginal (C-M, i.e., from species range center to margin) population dynamics continue to draw increasing attention because of their importance for current emerging issues such as biotic invasions and epidemic diseases under global change. Previous studies have mainly focused on species borders and C-M process in natural settings for native species. More recently, growing efforts are devoted to examine the C-M patterns and process for invasive species partly due to their relatively short history, highly dynamic populations, and management implications. Here I examine recent findings and information gaps related to (1) the C-M population dynamics linked to species invasions, and (2) the possible effects of climate change and land use on the C-M patterns and processes. Unlike most native species that are relatively stable (some even having contracting populations or ranges), many invasive species are still spreading fast and form new distribution or abundance centers. Because of the strong nonlinearity of population demographic or vital rates (i.e., birth, death, immigration, and emigration) across the C-M gradients and the increased complexity of species ranges due to habitat fragmentation, multiple introductions, range-wide C-M comparisons and simulation involving multiple vital rates are needed in the future.

show abstract

Genetic diversity and structure of the invasive tree Miconia calvescens in Pacific islands

Abstract: Aim This study investigates the amount and distribution of genetic variation within and among populations of the highly invasive tree, Miconia calvescens (Melastomataceae; hereafter miconia), in tropical island habitats that are differently impacted (distribution and spread) by this weed.

Cited by 48 publications

References 55 publications

Inferring native range and invasion scenarios with mitochondrial DNA: the case of T. solanivora successive north–south step-wise introductions across Central and South America

Inferring native range and invasion scenarios with mitochondrial DNA: the case of T. solanivora successive north–south step-wise introductions across Central and South America

What can DNA tell us about biological invasions?

Central-marginal population dynamics in species invasions

Contact Info

Product

Resources

About