Pleistocene demographic expansion and high gene flow in the Globe Skimmer dragonfly Pantala flavescens Fabricius (Odonata: Libellulidae) in Peninsular Malaysia

Low, Van Lun; Norma‐Rashid, Y.; Yusoff, Amri; Vinnie-Siow, Wei Yin; Prakash, Batah Kunalan; Tan, Tiong Kai; Mamat, Noorhidayah; Sofian‐Azirun, Mohd

doi:10.1016/j.jcz.2016.10.002

Cited by 19 publications

(15 citation statements)

References 37 publications

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“…Even if the assumption that demographic expansions have taken place is correct, the dating of these may be strongly affected by selection. Estimation of demographic trends by means of mismatch distributions using only mtDNA sequence data continue to be widely used in the recent literature (Low et al 2017;Diringer et al 2019;Gao et al 2019;Iván Pérez-Quiñonez et al 2019) although not all have used the method for molecular dating. A similar method, Bayesian skyline plots (Drummond et al 2005), is also frequently used with mtDNA data only, and findings tend to be similar (Grant 2015).…”

Section: Discussionmentioning

confidence: 99%

Purifying selection can reduce intraspecific mitochondrial gene variation to that of nuclear rRNA

Matumba

Oliver

Barker

et al. 2020

Preprint

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Mitochondrial DNA (mtDNA) has long been used to date the divergence between species, and to explore the time when species' effective population sizes changed. The idea that mitochondrial DNA is useful for molecular dating rests on the premise that its evolution is neutral. This premise was questionable to begin with, and even though it has long been challenged, the evidence against clock-like evolution of mtDNA is usually ignored. Here, we present a particularly clear and simple example to illustrate the implications of violations of the assumption of selective neutrality. DNA sequences were generated for the mtDNA COI gene and the nuclear 28S rRNA of two closely related and widely distributed rocky shore snails whose geographical ranges are defined by different thermal preferences. To our knowledge, this is the first study to use nuclear rRNA sequence for studying species-level genealogies instead of phylogenetics, presumably because this marker is considered to be uninformative at this taxonomic level. Even though the COI gene evolves at least an order of magnitude faster, which was reflected in high inter-specific divergence, intraspecific genetic variation was similar for both markers. As a result, estimates of population expansion times based on mismatch distributions were completely different for the two markers. Assuming that 28S evolves effectively clock-like, these findings likely illustrate variation-reducing purifying selection in mtDNA at the species level, and an elevated divergence rate caused by divergent selection between the two species. Although these two selective forces together make mtDNA suitable as a DNA barcoding marker because they create a 'barcoding gap', estimates of demographic change can be expected to be highly unreliable. Our study 2 contributes to the growing evidence that the utility of mtDNA beyond DNA barcoding is limited.

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Section: Discussionmentioning

confidence: 99%

Purifying selection can reduce intraspecific mitochondrial gene variation to that of nuclear rRNA

Matumba

Oliver

Barker

et al. 2020

Preprint

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“…Generally, cosmopolitan species have shown great genetic similarity or a lack of genetic structure along their geographical distribution (Freeland et al 2003); however, the existence of oceanic barriers or terrestrial discontinuities may limit the movement of highly dispersed species, affecting their spatial genetic structure. In the case of P. flavescens, the existence of long continental extensions suggests high gene flow and panmictic populations along vast geographic distances (Christudhas and Mathai 2014;Troast et al 2016;Alvial et al 2017;Low et al 2017). Nevertheless, the absence of continental bridges (e.g., to remote islands) could test these dispersal capabilities and promote a population structure in this cosmopolitan species.…”

Section: Discussionmentioning

confidence: 99%

“…Other studies have shown a null population structure in P. flavescens. For example, four geographical populations of P. flavescens in Peninsular Malaysia did not reveal any population structure (Low et al 2017), and Troast et al (2016) described high rates of gene flow among populations of P. flavescens in six distant geographical regions (Guyana, Japan, India, United States, Canada, and Korea).…”

Section: Discussionmentioning

confidence: 99%

“…For example, all other sites analyzed in our study showed h > 0.79, in the Maldives (h = 0.933) and Tonga islands (h = 0.815). Low et al (2017) described haplotypic diversity ranging from 0.889 to 0.996 in the Malaysia Peninsula, and Pfeiler and Markow (2017) reported a high haplotypic diversity (h = 0.838) when data from Troast et al (2016) were re-analyzed. Overall, the high differentiation and the lowest values of diversity (haplotype and allelic diversity) reported on this island reflect the effect of the great geographic isolation in this remote South Pacific island.…”

Section: Discussionmentioning

confidence: 99%

“…It migrates widely, following the temporary abundance of a habitat provided by rains, and it is among the dragonflies most often found on oceanic islands (May 2012). Recently, Christudhas and Mathai (2014), Troast et al (2016), and Low et al (2017) suggested high rates of gene flow and panmictic populations of P. flavescens along vast geographic distances. Nevertheless, the presence of individuals with unusual morphological and behavioral characteristics in a remote island of the South Pacific has suggested genetic divergence in this well-known migratory species (Samways and Osborn 1998).…”

Section: Introductionmentioning

confidence: 99%

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Isolation on a remote island: genetic and morphological differentiation of a cosmopolitan odonate

et al. 2018

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Although low levels of genetic structure are expected in highly widespread species, geographical and/or ecological factors can limit species distributions and promote population structure and morphological differentiation. In order to determine the effects of geographical isolation on population genetic structure and wing morphology, 281 individuals of the cosmopolitan odonate Pantala flavescens were collected from four continental (Central and South America) and five insular sites (Polynesian islands and the Maldives). COI sequences and eight microsatellite loci were used to characterize genetic diversity and genetic structure between and within locations. Linear and geometric morphometry were used to evaluate differences in the size and shape of wings. Genetic analysis showed a global genetic difference between the continental and insular sites. American locations did not show genetic structure, even in locations separated by a distance of 5000 km. Easter Island showed the lowest values of genetic diversity (mainly mitochondrial diversity) and the highest values of genetic differences compared to other insular and continental sites. Individuals from Easter Island showed smaller forewings, a different abdomen length to thorax length ratio, and a different configuration of anal loop in the hindwings. Thus, the greater isolation, smaller area, and young geological age seem to have determined the genetic and morphological differences in P. flavescens of Easter Island, where selection could promote a loss of migratory behavior and may improve other life history traits, such as reproduction. This work provides new insight into how microevolutionary processes operate in isolated populations of cosmopolitan species.

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Genetic variation and population structure of a widely distributed damselfly (Ischnura senegalensis)

Jiang

Zhang

Bai

et al. 2023

Arch Insect Biochem Physiol

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Ischnura senegalensis Rambur, 1842 is among the most widespread damselfly species in the world. Unlike dragonflies with strong migration abilities, I. senegalensis have limited dispersing abilities. Gene flow among I. senegalensis populations may be greatly influenced by anthropogenic disturbance, fragmented suitable habitats, sea straits, or even global warming. In this study, to investigate the genetic diversity of I. senegalensis populations, we sequenced and collected 498 cytochrome oxidase I sequences across the Old World. Haplotype network analysis showed 51 haplotypes and I. senegalensis could be grouped into four regions (Afrotropical region, Oriental region, main Islands of Japan, and the Ryukyu Islands), each of which contains different dominant haplotypes. Based on molecular variance analysis, we found that populations from the Afrotropical region have quite a low gene flow with the Asian populations (except Yemen). Furthermore, rice cultivation may aid the dispersion of I. senegalensis in the oriental region. Populations from the Ryukyu Islands show the highest genetic diversity, which may be due to the geological separation among islands. Our results prove that I. senegalensis has great genetic diversity among different populations across the world.

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Pleistocene demographic expansion and high gene flow in the Globe Skimmer dragonfly Pantala flavescens Fabricius (Odonata: Libellulidae) in Peninsular Malaysia

Cited by 19 publications

References 37 publications

Purifying selection can reduce intraspecific mitochondrial gene variation to that of nuclear rRNA

Purifying selection can reduce intraspecific mitochondrial gene variation to that of nuclear rRNA

Isolation on a remote island: genetic and morphological differentiation of a cosmopolitan odonate

Genetic variation and population structure of a widely distributed damselfly (Ischnura senegalensis)

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