The chromosomal polymorphism of Drosophila subobscura: a microevolutionary weapon to monitor global change

Balanyà, Joan; Huey, Raymond B.; Gilchrist, George W.; Serra, Luı́s

doi:10.1038/hdy.2009.86

Cited by 59 publications

(58 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Climate strongly influences the genetic constitution of several Drosophila species, such that adaptive polymorphisms (chromosomal inversions) associated with climate have been proposed as tools for monitoring climate change (Umina et al 2005;Balanya et al 2009). Similar associations of adaptive polymorphisms and climate exist in anopheline vectors of malaria.…”

Section: Discussionmentioning

confidence: 99%

Ecological Genomics ofAnopheles gambiaeAlong a Latitudinal Cline: A Population-Resequencing Approach

et al. 2012

View full text Add to dashboard Cite

The association between fitness-related phenotypic traits and an environmental gradient offers one of the best opportunities to study the interplay between natural selection and migration. In cases in which specific genetic variants also show such clinal patterns, it may be possible to uncover the mutations responsible for local adaptation. The malaria vector, Anopheles gambiae, is associated with a latitudinal cline in aridity in Cameroon; a large inversion on chromosome 2L of this mosquito shows large differences in frequency along this cline, with high frequencies of the inverted karyotype present in northern, more arid populations and an almost complete absence of the inverted arrangement in southern populations. Here we use a genome resequencing approach to investigate patterns of population divergence along the cline. By sequencing pools of individuals from both ends of the cline as well as in the center of the cline-where the inversion is present in intermediate frequency-we demonstrate almost complete panmixia across collinear parts of the genome and high levels of differentiation in inverted parts of the genome. Sequencing of separate pools of each inversion arrangement in the center of the cline reveals large amounts of gene flux (i.e., gene conversion and double crossovers) even within inverted regions, especially away from the inversion breakpoints. The interplay between natural selection, migration, and gene flux allows us to identify several candidate genes responsible for the match between inversion frequency and environmental variables. These results, coupled with similar conclusions from studies of clinal variation in Drosophila, point to a number of important biological functions associated with local environmental adaptation.

show abstract

Section: Discussionmentioning

confidence: 99%

Ecological Genomics ofAnopheles gambiaeAlong a Latitudinal Cline: A Population-Resequencing Approach

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Montane tropical biota are believed to be particularly vulnerable to global warm ing effects (Sheldon et al 2011). Several longterm studies on Drosophila inversion polymorphisms have shown that changes in inversion frequencies can be a valuable tool to monitor rapid genetic shifts caused by climatic change (Stamenkovic-Radak et al 2008, Balanyà et al 2009, Levitan & Etges 2009; for review see: Rieseberg 2008 andRezende et al 2010). None of these studies, however, addresses the potential effects of climate change on a Drosophila Neotropical species.…”

Section: Introductionmentioning

confidence: 99%

Unexpected long-term changes in chromosome inversion frequencies in a Neotropical Drosophila species

2012

View full text Add to dashboard Cite

Several long-term studies on Drosophila chromosome inversion polymorphisms have shown that inversions can be a valuable tool to monitor rapid genetic shifts with climate change. However, so far, no study has assessed the effects of climate change in populations of Neotropical Drosophila species. After more than 2 decades, new samples were collected from the Parque Nacional do Itatiaia, Rio de Janeiro, to assess any changes in inversion frequencies and to detect possible global warming effects on the inversion polymorphism of the second chromosome of D. mediopunctata. Our results show unexpected simultaneous changes in inversion frequencies associated with climate change. Perhaps climatic variables other than temperature underlying the process caused such change, although potential genetic drift effects or demographic factors cannot be excluded. Further studies assessing population genetic structure may help clarify the changes observed.

show abstract

“…For example, Drosophila subobscura populations in the New World are estimated to have originated from fewer than and Southern Hemispheres (Huey et al 2000;Pascual et al 2007;Balanyà et al 2009). In this case, despite a strong bottleneck, there appears to have been strong selection for chromosomal inversion frequency and for wing size, both of which show a predictable latitudinal cline in the native range that has developed independently in both northern and southern introduced populations.…”

Section: Genetic Diversity and Niche Breadthmentioning

confidence: 99%

Complex patterns of global spread in invasive insects: eco-evolutionary and management consequences

Garnas

Auger‐Rozenberg²,

Roques³

et al. 2016

Biol Invasions

136

111

View full text Add to dashboard Cite

The advent of simple and affordable tools for molecular identification of novel insect invaders and assessment of population diversity has changed the face of invasion biology in recent years. The widespread application of these tools has brought with it an emerging understanding that patterns in biogeography, introduction history and subsequent movement and spread of many invasive alien insects are far more complex than previously thought. We reviewed the literature and found that for a number of invasive insects, there is strong and growing evidence that multiple introductions, complex global movement, and population admixture in the invaded range are commonplace. Additionally, historical paradigms related to species and strain identities and origins of common invaders are in many cases being 1 challenged. This has major consequences for our understanding of basic biology and ecology of invasive insects and impacts quarantine, management and biocontrol programs. In addition, we found that founder effects rarely limit fitness in invasive insects and may benefit populations (by purging harmful alleles or increasing additive genetic variance). Also, while phenotypic plasticity appears important post-establishment, genetic diversity in invasive insects is often higher than expected and increases over time via multiple introductions.Further, connectivity among disjunct regions of global invasive ranges is generally far higher than expected and is often asymmetric, with some populations contributing disproportionately to global spread. We argue that the role of connectivity in driving the ecology and evolution of introduced species with multiple invasive ranges has been historically underestimated and that such species are often best understood in a global context.

show abstract

The chromosomal polymorphism of Drosophila subobscura: a microevolutionary weapon to monitor global change

Cited by 59 publications

References 27 publications

Ecological Genomics ofAnopheles gambiaeAlong a Latitudinal Cline: A Population-Resequencing Approach

Ecological Genomics ofAnopheles gambiaeAlong a Latitudinal Cline: A Population-Resequencing Approach

Unexpected long-term changes in chromosome inversion frequencies in a Neotropical Drosophila species

Complex patterns of global spread in invasive insects: eco-evolutionary and management consequences

Contact Info

Product

Resources

About