ReviewJournal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology2017
The nervous and visual systems of onychophorans and tardigrades: learning about arthropod evolution from their closest relatives.
Review in Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 29 citations in OpenAlex.
- Modulating the levels and activity of the retinal determination network is sufficient to induce the specification of distinct tissue fates in Drosophila.Development (Cambridge, England) · 2025Article
- Preservation and early evolution of scalidophoran ventral nerve cord.Science advances · 2025Article
- Article
- Uncovering developmental diversity in the field.Development (Cambridge, England) · 2024Article
- Review of extra-embryonic tissues in the closest arthropod relatives, onychophorans and tardigrades.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Review
- A microCT-based atlas of the central nervous system and midgut in sea spiders (Pycnogonida) sheds first light on evolutionary trends at the family level.Frontiers in zoology · 2022Article
- The velvet worm brain unveils homologies and evolutionary novelties across panarthropods.BMC biology · 2022Article
- Analysis of Pigment-Dispersing Factor Neuropeptides and Their Receptor in a Velvet Worm.Frontiers in endocrinology · 2020Article
- Functional morphology of a lobopod: case study of an onychophoran leg.Royal Society open science · 2019Article
- X-ray imaging of a water bear offers a new look at tardigrade internal anatomy.Zoological letters · 2019Article
- Halloween genes in panarthropods and the evolution of the early moulting pathway in Ecdysozoa.Royal Society open science · 2018Article
- Comparison of ventral organ development across Pycnogonida (Arthropoda, Chelicerata) provides evidence for a plesiomorphic mode of late neurogenesis in sea spiders and myriapods.BMC evolutionary biology · 2018Article
- Brain and eyes of Kerygmachela reveal protocerebral ancestry of the panarthropod head.Nature communications · 2018Article
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Corrections and comments
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Understanding the origin and evolution of arthropods requires examining their closest outgroups, the tardigrades (water bears) and onychophorans (velvet worms). Despite the rise of molecular techniques, the phylogenetic positions of tardigrades and onychophorans in the panarthropod tree (onychophorans + tardigrades + arthropods) remain unresolved. Hence, these methods alone are currently insufficient for clarifying the panarthropod topology. Therefore, the evolution of different morphological traits, such as one of the most intriguing features of panarthropods-their nervous system-becomes essential for shedding light on the origin and evolution of arthropods and their relatives within the Panarthropoda. In this review, we summarise current knowledge of the evolution of panarthropod nervous and visual systems. In particular, we focus on the evolution of segmental ganglia, the segmental identity of brain regions, and the visual system from morphological and developmental perspectives. In so doing, we address some of the many controversies surrounding these topics, such as the homology of the onychophoran eyes to those of arthropods as well as the segmentation of the tardigrade brain. Finally, we attempt to reconstruct the most likely state of these systems in the last common ancestors of arthropods and panarthropods based on what is currently known about tardigrades and onychophorans.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.