Changes in effective population size of Odonata in response to climate change revealed through genomics DOI Creative Commons
Ethan Tolman,

Or R. Bruchim,

Ella Simone Driever

et al.

International Journal of Odonatology, Journal Year: 2023, Volume and Issue: 26, P. 205 - 211

Published: Dec. 18, 2023

The advent of third generation sequencing technologies has led to a boom high-quality, chromosome level genome assemblies Odonata, but date, these have not been widely used estimate the demographic history sequenced species through time. Yet, an understanding how lineages responded past changes in climate is useful predicting their response current and future climate. Here, we utilized pairwise sequential markovian coalescent (PSMC) histories Sympetrum striolatum, Ischnura elegans, Hetaerina americana, three Odonata for which chromosome-length are available. elegans showed sharp decline effective population size around onset Pleistocene ice ages, while both S. striolatum H. americana more recent declines. All had relatively stable sizes over last one hundred thousand years. Although it important remain cautious when determining conservation status species, models did show any reason major concern tested. model I. confirmed prior research suggesting that will increase as temperatures rise.

Language: Английский

Systematics and biogeography of the Holarctic dragonfly genus Somatochlora (Anisoptera: Corduliidae) DOI Open Access
Aaron Goodman, John C. Abbott, Jesse W. Breinholt

et al.

Systematic Entomology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Abstract The striped emeralds ( Somatochlora Selys) are a Holarctic group of medium‐sized metallic green dragonflies that mainly inhabit bogs and seepages, alpine streams, lakes, channels lowland brooks. With 42 species they the most diverse genus within Corduliidae (Odonata: Anisoptera). Systematic, taxonomic biogeographic resolution remains unclear, with numerous hypotheses relatedness based on wing veins, male claspers (epiproct paraprocts) nymphs. Furthermore, borisi was recently described as new Corduliochlora ) 17 morphological characters, but its position respect to is unclear. We present phylogenetic reconstruction using Anchored Hybrid Enrichment (AHE) sequences 40/42 (including ). Our data recover monophyly , C. recovered sister remaining . also three highly supported clades one mixed support; this lack likely due incomplete lineage sorting, third‐codon saturation iterative analyses run variations our dataset hybridization. we constructed for all 20 characters from literature which were used evaluate groups molecular data; support validity distinct Finally, divergence time estimation analysis indicate originated in Western North Hemisphere during Miocene, dispersal events Eastern (11, 7 5 Ma, respectively) across Beringian Land Bridge.

Language: Английский

Citations

0
Exploring chromosome evolution in 250 million year old groups of dragonflies and damselflies (Insecta:Odonata) DOI Creative Commons
Ethan Tolman, Christopher D. Beatty, Jonas Bush

et al.

Molecular Ecology, Journal Year: 2023, Volume and Issue: 32(21), P. 5785 - 5797

Published: Oct. 3, 2023

Using recently published chromosome-length genome assemblies of two damselfly species, Ischnura elegans and Platycnemis pennipes, dragonfly Pantala flavescens Tanypteryx hageni, we demonstrate that the autosomes Odonata have undergone few fission, fusion, or inversion events, despite 250 million years separation. In four genomes discussed here, our results show all a clear ortholog in ancestral karyotype. Despite this chromosomal orthology, different factors, including concentration repeat dynamics, GC content, relative position on chromosome, proportion coding sequence influence density syntenic blocks across chromosomes. However, these factors do not interact to synteny same way any pairs nor is one factor retained species. Furthermore, it was previously unknown whether micro-chromosomes are descended from chromosome. structural rearrangements, evidence suggests sampled indeed descend an micro-chromosome P. lost through fusion with autosomes.

Language: Английский

Citations

4
A chromosome-level genome assembly for the smoky rubyspot damselfly (Hetaerina titia) DOI Creative Commons
Christophe Patterson,

Erandi Bonillas-Monge,

Adrian C. Brennan

et al.

Journal of Heredity, Journal Year: 2023, Volume and Issue: 115(1), P. 103 - 111

Published: Nov. 21, 2023

Abstract Smoky rubyspot damselflies (Hetaerina titia Drury, 1773) are one of the most commonly encountered odonates along streams and rivers on both slopes Central America Atlantic drainages in United States southern Canada. Owing to their highly variable wing pigmentation, they have become a model system for studying sexual selection interspecific behavioral interference. Here, we sequence assemble genome female smoky rubyspot. Of primary assembly (i.e. principle pseudohaplotype), 98.8% is made up 12 chromosomal pseudomolecules (2N = 22A + X). There 75 scaffolds total, an N50 120 Mb, contig-N50 0.64 high arthropod BUSCO score [C: 97.6% (S: 97.3%, D: 0.3%), F: 0.8%, M: 1.6%]. We then compare our that blue-tailed damselfly (Ischnura elegans), complete date, recently published American americana). Collectively, these resources make Hetaerina genome-enabled genus further studies ecological evolutionary forces shaping biological diversity.

Language: Английский

Citations

4
Newly Sequenced Genomes Reveal Patterns of Gene Family Expansion in select Dragonflies (Odonata: Anisoptera) DOI Creative Commons
Ethan Tolman, Christopher D. Beatty, Paul B. Frandsen

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 12, 2023

Abstract Gene family expansions play a key role in shaping patterns of biodiversity across the tree life. In Insecta, expanded gene families have broadly been tied to diet, pesticide resistance, immune response and survival extreme environments. Patterns evolution are particular interest Odonata (dragonflies damselflies), which first lineage fly, one most exceptional predators. Odonata, opsin genes correlated with diversification herbivorous insects that prey upon, but general trends expansion contraction not studied this order. Here, we show two Anisoptera (dragonflies), Libellulidae Petaluridae, related their unique life history patterns. share response, desiccation processing free radicals, all success low quality water bodies. The Petaluridae involved sensory perception, can be semi-terrestrial lifestyle nymphs family. Furthermore, as whole has remarkably high (λ=.19) level turnover compared other insect orders, phenomenon will merit further exploration. These results an important step towards understanding why is, generally, species rich short lived highly tolerant poor quality, while is habitat behavioral specialists.

Language: Английский

Citations

4
Changes in effective population size of Odonata in response to climate change revealed through genomics DOI Creative Commons
Ethan Tolman,

Or R. Bruchim,

Ella Simone Driever

et al.

International Journal of Odonatology, Journal Year: 2023, Volume and Issue: 26, P. 205 - 211

Published: Dec. 18, 2023

The advent of third generation sequencing technologies has led to a boom high-quality, chromosome level genome assemblies Odonata, but date, these have not been widely used estimate the demographic history sequenced species through time. Yet, an understanding how lineages responded past changes in climate is useful predicting their response current and future climate. Here, we utilized pairwise sequential markovian coalescent (PSMC) histories Sympetrum striolatum, Ischnura elegans, Hetaerina americana, three Odonata for which chromosome-length are available. elegans showed sharp decline effective population size around onset Pleistocene ice ages, while both S. striolatum H. americana more recent declines. All had relatively stable sizes over last one hundred thousand years. Although it important remain cautious when determining conservation status species, models did show any reason major concern tested. model I. confirmed prior research suggesting that will increase as temperatures rise.

Language: Английский

Citations

3