The salmon louse genome: Copepod features and parasitic adaptations DOI Creative Commons
Rasmus Skern‐Mauritzen, Ketil Malde, Christiane Eichner

et al.

Genomics, Journal Year: 2021, Volume and Issue: 113(6), P. 3666 - 3680

Published: Aug. 14, 2021

Copepods encompass numerous ecological roles including parasites, detrivores and phytoplankton grazers. Nonetheless, copepod genome assemblies remain scarce. Lepeophtheirus salmonis is an economically ecologically important ectoparasitic found on salmonid fish. We present the 695.4 Mbp L. assembly containing ≈60% repetitive regions 13,081 annotated protein-coding genes. The comprises 14 autosomes a ZZ-ZW sex chromosome system. Assembly assessment identified 92.4% of expected arthropod Transcriptomics supported annotation indicated marked shift in gene expression after host attachment, apparent downregulation genes related to circadian rhythm coinciding with abandoning diurnal migration. shows evolutionary signatures loss needed for peroxisome biogenesis, presence FNII domains, incomplete heme homeostasis pathway suggesting proteins be obtained from host. Despite repeated development resistance against chemical treatments exhibits low numbers many involved detoxification.

Language: Английский

The Diversity of Venom: The Importance of Behavior and Venom System Morphology in Understanding Its Ecology and Evolution DOI Creative Commons
Vanessa Schendel, Lachlan D. Rash, Ronald A. Jenner

et al.

Toxins, Journal Year: 2019, Volume and Issue: 11(11), P. 666 - 666

Published: Nov. 14, 2019

Venoms are one of the most convergent animal traits known, and encompass a much greater taxonomic functional diversity than is commonly appreciated. This knowledge gap limits potential venom as model trait in evolutionary biology. Here, we summarize venoms relate this to what known about system morphology, modulation, pharmacology, with aim drawing attention importance these largely neglected aspects research. We find that animals have evolved at least 101 independent times play 11 distinct ecological roles addition predation, defense, feeding. Comparisons different systems suggest morphology strongly influences how achieve functions, hence an important consideration for understanding molecular evolution their toxins. Our findings also highlight need more holistic studies toxins they contain. Greater behavior, ecologically relevant toxin pharmacology will improve our toxins, likely facilitate exploration sources tools therapeutic agrochemical lead compounds.

Language: Английский

Citations

202

Comprehensive Species Sampling and Sophisticated Algorithmic Approaches Refute the Monophyly of Arachnida DOI Creative Commons
Jesús A. Ballesteros, Carlos E. Santibáñez‐López, Caitlin M. Baker

et al.

Molecular Biology and Evolution, Journal Year: 2022, Volume and Issue: 39(2)

Published: Jan. 25, 2022

Deciphering the evolutionary relationships of Chelicerata (arachnids, horseshoe crabs, and allied taxa) has proven notoriously difficult, due to their ancient rapid radiation incidence elevated rates in several lineages. Although conflicting hypotheses prevail morphological molecular data sets alike, monophyly Arachnida is nearly universally accepted, despite historical lack support sets. Some phylotranscriptomic analyses have recovered arachnid monophyly, but these did not sample all living orders, whereas including orders failed recover Arachnida. To understand this conflict, we assembled a set 506 high-quality genomes transcriptomes, sampling with high occupancy rigorous approaches orthology inference. Our consistently nested placement crabs within paraphyletic This result was insensitive variation genes, complexity substitution models, alternative algorithmic species tree Investigation sources systematic bias showed that genes sites are enriched noise exhibit low information content. test impact data, generated 514-taxon matrix extant fossil Chelicerata, analyzed tandem matrix. Combined clade Merostomata (the marine Xiphosura, Eurypterida, Chasmataspidida), merostomates appeared results suggest convergence resulting from adaptations life terrestrial habitats driven perception paralleling history numerous other invertebrate groups.

Language: Английский

Citations

84

Humidity sensors that alert mosquitoes to nearby hosts and egg-laying sites DOI
Willem J. Laursen, Gonzalo Budelli,

Ruocong Tang

et al.

Neuron, Journal Year: 2023, Volume and Issue: 111(6), P. 874 - 887.e8

Published: Jan. 13, 2023

Language: Английский

Citations

46

The evolution of insect biodiversity DOI Creative Commons
Erik Tihelka, Chenyang Cai, Mattia Giacomelli

et al.

Current Biology, Journal Year: 2021, Volume and Issue: 31(19), P. R1299 - R1311

Published: Oct. 1, 2021

Language: Английский

Citations

88

Phylogenomic interrogation resolves the backbone of the Pseudoscorpiones tree of life DOI
Ligia R. Benavides, Julia G. Cosgrove, Mark S. Harvey

et al.

Molecular Phylogenetics and Evolution, Journal Year: 2019, Volume and Issue: 139, P. 106509 - 106509

Published: May 24, 2019

Language: Английский

Citations

80

Signaling Pathways That Regulate the Crustacean Molting Gland DOI Creative Commons
Donald L. Mykles

Frontiers in Endocrinology, Journal Year: 2021, Volume and Issue: 12

Published: June 21, 2021

A pair of Y-organs (YOs) are the molting glands decapod crustaceans. They synthesize and secrete steroid hormones (ecdysteroids) their activity is controlled by external internal signals. The YO transitions through four physiological states over molt cycle, which mediated molt-inhibiting hormone (MIH; basal state), mechanistic Target Rapamycin Complex 1 (mTORC1; activated Transforming Growth Factor-β (TGFβ)/Activin (committed ecdysteroid (repressed state) signaling pathways. MIH, produced in eyestalk X-organ/sinus gland complex, inhibits synthesis ecdysteroids. model for MIH organized into a cAMP/Ca

Language: Английский

Citations

59

Genomic evolution and adaptation of arthropod-associated Rickettsia DOI Creative Commons
Khalid El Karkouri, Éric Ghigo, Didier Raoult

et al.

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: March 9, 2022

Abstract Rickettsia species are endosymbionts hosted by arthropods and known to cause mild fatal diseases in humans. Here, we analyse the evolution diversity of 34 using a pangenomic meta-analysis (80 genomes/41 plasmids). Phylogenomic trees showed that spp. diverged into two Spotted Fever groups, Typhus group, Canadensis group Bellii may have inherited their plasmids from an ancestral plasmid persisted some strains or been lost others. The results suggested ancestors might infected Acari and/or Insecta probably persisting inside switching hosts. Pangenomic analysis revealed genus evolved through strong interplay between genome degradation/reduction expansion leading possible distinct adaptive trajectories. mainly shared evolutionary relationships with α-proteobacteria, also γ/β/δ-proteobacteria, cytophagia, actinobacteria, cyanobacteria, chlamydiia viruses, suggesting lateral exchanges several critical genes. These processes orchestrated abundance mobile genetic elements, especially groups. In this study, provided global genomic view intracellular help our understanding diversity, adaptation fitness.

Language: Английский

Citations

51

The radiation of Hymenoptera illuminated by Bayesian inferences from the fossil record DOI Creative Commons
Corentin Jouault, Nozomu Oyama, Sergio Álvarez‐Parra

et al.

Current Biology, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

1

An early Cambrian euarthropod with radiodont-like raptorial appendages DOI
Han Zeng, Fangchen Zhao, Kecheng Niu

et al.

Nature, Journal Year: 2020, Volume and Issue: 588(7836), P. 101 - 105

Published: Nov. 4, 2020

Language: Английский

Citations

61

Snowballs in Africa: sectioning a long-lived Neoproterozoic carbonate platform and its bathyal foreslope (NW Namibia) DOI
Paul F. Hoffman, Galen P. Halverson, Daniel P. Schrag

et al.

Earth-Science Reviews, Journal Year: 2021, Volume and Issue: 219, P. 103616 - 103616

Published: April 21, 2021

Language: Английский

Citations

55