ArticleDevelopment genes and evolution2009
Appendage patterning in the South American bird spider Acanthoscurria geniculata (Araneae: Mygalomorphae).
Article in Development genes and evolution, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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29 citing papers in PubMed, 81 citations in OpenAlex.
- Single-cell sequencing reveals potential novel insights into appendage-patterning and joint-development in a spider.Developmental dynamics : an official publication of the American Association of Anatomists · 2026Article
- Developmental system drift in the patterning of the arthropod tarsus.Proceedings. Biological sciences · 2026Article
- An ancient genome duplication event drives the development and evolution of spinnerets in spiders.Science advances · 2026Article
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- A Novel Expression Domain of extradenticle Underlies the Evolutionary Developmental Origin of the Chelicerate Patella.Molecular biology and evolution · 2024Article
- A taxon-restricted duplicate of Iroquois3 is required for patterning the spider waist.PLoS biology · 2024Article
- Venom gland organogenesis in the common house spider.Scientific reports · 2024Article
- Single-cell RNA sequencing of mid-to-late stage spider embryos: new insights into spider development.BMC genomics · 2024Article
- Expression of posterior Hox genes and opisthosomal appendage development in a mygalomorph spider.Development genes and evolution · 2023Article
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- Implications of a cheliceral axial duplication in Tetragnatha versicolor (Araneae: Tetragnathidae) for arachnid deuterocerebral appendage development.Development genes and evolution · 2021Review
- A chelicerate Wnt gene expression atlas: novel insights into the complexity of arthropod Wnt-patterning.EvoDevo · 2021Article
- Morphological changes during the post-embryonic ontogeny of mesothelan spiders and aspects of character evolution in early spiders.Development genes and evolution · 2021Article
- Panarthropod tiptop/teashirt and spalt orthologs and their potential role as "trunk"-selector genes.EvoDevo · 2021Article
- Cribellate thread production as model for spider's spinneret kinematics.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021Article
- Developmental gene expression as a phylogenetic data class: support for the monophyly of Arachnopulmonata.Development genes and evolution · 2020Article
- Embryonic development and secondary axis induction in the Brazilian white knee tarantula Acanthoscurria geniculata, C. L. Koch, 1841 (Araneae; Mygalomorphae; Theraphosidae).Development genes and evolution · 2020Article
- six3 acts upstream of foxQ2 in labrum and neural development in the spider Parasteatoda tepidariorum.Development genes and evolution · 2020Article
- Article
- Cooption of an appendage-patterning gene cassette in the head segmentation of arachnids.Proceedings of the National Academy of Sciences of the United States of America · 2018Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Pattern formation by the genes dachshund (dac), Distal-less (Dll), extradenticle (exd) and homothorax (hth) in spider appendages has been studied previously only in members of the higher spiders (Araneomorphae). In order to study the diversity and conservation of pattern formation in spiders as a whole, we studied homologs of these genes in embryos of the bird spider Acanthoscurria geniculata, which belongs to the Mygalomorphae, a more primitive spider group. We show that the patterns of dac and Dll are largely conserved in all spiders studied so far. We find a duplication of hth and exd genes as previously identified in the higher spider Cupiennius salei. These data suggest that pattern formation shows little diversity in all spiders, including the duplication of hth and exd that likely occurred before the split of Mygalomorphae and Araneomorphae. We also find that the legs and pedipalps bear endites of which only the pedipalpal endite expresses Dll and is retained in the adult. Similarly, the limb buds of the posterior spinnerets express Dll and become segmented appendages in the adult, whereas the anterior spinnerets lack Dll expression and are absent in postembryonic stages. In both cases, the expression of Dll or the lack of it indicates structures which will be retained as adult traits or rudimentary structures that degenerate, respectively. The presence of embryonic rudiments of leg endites in Acanthoscurria and the leg-like pattern formation in the posterior spinnerets are interpreted as primitive traits that have been lost in the Araneomorphae.
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